1 /* 2 * hostapd / WPS integration 3 * Copyright (c) 2008-2012, Jouni Malinen <j@w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "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 <= HOSTAPD_MAX_SSID_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 bss->wpa_pairwise |= WPA_CIPHER_CCMP; 352 if (cred->encr_type & WPS_ENCR_TKIP) 353 bss->wpa_pairwise |= WPA_CIPHER_TKIP; 354 bss->rsn_pairwise = bss->wpa_pairwise; 355 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, 356 bss->wpa_pairwise, 357 bss->rsn_pairwise); 358 359 if (cred->key_len >= 8 && cred->key_len < 64) { 360 os_free(bss->ssid.wpa_passphrase); 361 bss->ssid.wpa_passphrase = os_zalloc(cred->key_len + 1); 362 if (bss->ssid.wpa_passphrase) 363 os_memcpy(bss->ssid.wpa_passphrase, cred->key, 364 cred->key_len); 365 hostapd_config_clear_wpa_psk(&bss->ssid.wpa_psk); 366 } else if (cred->key_len == 64) { 367 hostapd_config_clear_wpa_psk(&bss->ssid.wpa_psk); 368 bss->ssid.wpa_psk = 369 os_zalloc(sizeof(struct hostapd_wpa_psk)); 370 if (bss->ssid.wpa_psk && 371 hexstr2bin((const char *) cred->key, 372 bss->ssid.wpa_psk->psk, PMK_LEN) == 0) { 373 bss->ssid.wpa_psk->group = 1; 374 os_free(bss->ssid.wpa_passphrase); 375 bss->ssid.wpa_passphrase = NULL; 376 } 377 } 378 bss->auth_algs = 1; 379 } else { 380 /* 381 * WPS 2.0 does not allow WEP to be configured, so no need to 382 * process that option here either. 383 */ 384 bss->auth_algs = 1; 385 } 386 387 /* Schedule configuration reload after short period of time to allow 388 * EAP-WSC to be finished. 389 */ 390 eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface, 391 NULL); 392 393 return 0; 394 } 395 396 397 static int hapd_wps_cred_cb(struct hostapd_data *hapd, void *ctx) 398 { 399 const struct wps_credential *cred = ctx; 400 FILE *oconf, *nconf; 401 size_t len, i; 402 char *tmp_fname; 403 char buf[1024]; 404 int multi_bss; 405 int wpa; 406 407 if (hapd->wps == NULL) 408 return 0; 409 410 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute", 411 cred->cred_attr, cred->cred_attr_len); 412 413 wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings"); 414 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len); 415 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x", 416 cred->auth_type); 417 wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type); 418 wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx); 419 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key", 420 cred->key, cred->key_len); 421 wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR, 422 MAC2STR(cred->mac_addr)); 423 424 if ((hapd->conf->wps_cred_processing == 1 || 425 hapd->conf->wps_cred_processing == 2) && cred->cred_attr) { 426 hapd_new_ap_event(hapd, cred->cred_attr, cred->cred_attr_len); 427 } else if (hapd->conf->wps_cred_processing == 1 || 428 hapd->conf->wps_cred_processing == 2) { 429 struct wpabuf *attr; 430 attr = wpabuf_alloc(200); 431 if (attr && wps_build_credential_wrap(attr, cred) == 0) 432 hapd_new_ap_event(hapd, wpabuf_head_u8(attr), 433 wpabuf_len(attr)); 434 wpabuf_free(attr); 435 } else 436 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS); 437 438 if (hapd->conf->wps_cred_processing == 1) 439 return 0; 440 441 os_memcpy(hapd->wps->ssid, cred->ssid, cred->ssid_len); 442 hapd->wps->ssid_len = cred->ssid_len; 443 hapd->wps->encr_types = 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 { 452 if (hapd->wps->network_key == NULL || 453 hapd->wps->network_key_len < cred->key_len) { 454 hapd->wps->network_key_len = 0; 455 os_free(hapd->wps->network_key); 456 hapd->wps->network_key = os_malloc(cred->key_len); 457 if (hapd->wps->network_key == NULL) 458 return -1; 459 } 460 hapd->wps->network_key_len = cred->key_len; 461 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len); 462 } 463 hapd->wps->wps_state = WPS_STATE_CONFIGURED; 464 465 if (hapd->iface->config_fname == NULL) 466 return hapd_wps_reconfig_in_memory(hapd, cred); 467 len = os_strlen(hapd->iface->config_fname) + 5; 468 tmp_fname = os_malloc(len); 469 if (tmp_fname == NULL) 470 return -1; 471 os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname); 472 473 oconf = fopen(hapd->iface->config_fname, "r"); 474 if (oconf == NULL) { 475 wpa_printf(MSG_WARNING, "WPS: Could not open current " 476 "configuration file"); 477 os_free(tmp_fname); 478 return -1; 479 } 480 481 nconf = fopen(tmp_fname, "w"); 482 if (nconf == NULL) { 483 wpa_printf(MSG_WARNING, "WPS: Could not write updated " 484 "configuration file"); 485 os_free(tmp_fname); 486 fclose(oconf); 487 return -1; 488 } 489 490 fprintf(nconf, "# WPS configuration - START\n"); 491 492 fprintf(nconf, "wps_state=2\n"); 493 494 if (is_hex(cred->ssid, cred->ssid_len)) { 495 fprintf(nconf, "ssid2="); 496 for (i = 0; i < cred->ssid_len; i++) 497 fprintf(nconf, "%02x", cred->ssid[i]); 498 fprintf(nconf, "\n"); 499 } else { 500 fprintf(nconf, "ssid="); 501 for (i = 0; i < cred->ssid_len; i++) 502 fputc(cred->ssid[i], nconf); 503 fprintf(nconf, "\n"); 504 } 505 506 if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) && 507 (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))) 508 wpa = 3; 509 else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) 510 wpa = 2; 511 else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)) 512 wpa = 1; 513 else 514 wpa = 0; 515 516 if (wpa) { 517 char *prefix; 518 fprintf(nconf, "wpa=%d\n", wpa); 519 520 fprintf(nconf, "wpa_key_mgmt="); 521 prefix = ""; 522 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) { 523 fprintf(nconf, "WPA-EAP"); 524 prefix = " "; 525 } 526 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK)) 527 fprintf(nconf, "%sWPA-PSK", prefix); 528 fprintf(nconf, "\n"); 529 530 fprintf(nconf, "wpa_pairwise="); 531 prefix = ""; 532 if (cred->encr_type & WPS_ENCR_AES) { 533 fprintf(nconf, "CCMP"); 534 prefix = " "; 535 } 536 if (cred->encr_type & WPS_ENCR_TKIP) { 537 fprintf(nconf, "%sTKIP", prefix); 538 } 539 fprintf(nconf, "\n"); 540 541 if (cred->key_len >= 8 && cred->key_len < 64) { 542 fprintf(nconf, "wpa_passphrase="); 543 for (i = 0; i < cred->key_len; i++) 544 fputc(cred->key[i], nconf); 545 fprintf(nconf, "\n"); 546 } else if (cred->key_len == 64) { 547 fprintf(nconf, "wpa_psk="); 548 for (i = 0; i < cred->key_len; i++) 549 fputc(cred->key[i], nconf); 550 fprintf(nconf, "\n"); 551 } else { 552 wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu " 553 "for WPA/WPA2", 554 (unsigned long) cred->key_len); 555 } 556 557 fprintf(nconf, "auth_algs=1\n"); 558 } else { 559 /* 560 * WPS 2.0 does not allow WEP to be configured, so no need to 561 * process that option here either. 562 */ 563 fprintf(nconf, "auth_algs=1\n"); 564 } 565 566 fprintf(nconf, "# WPS configuration - END\n"); 567 568 multi_bss = 0; 569 while (fgets(buf, sizeof(buf), oconf)) { 570 if (os_strncmp(buf, "bss=", 4) == 0) 571 multi_bss = 1; 572 if (!multi_bss && 573 (str_starts(buf, "ssid=") || 574 str_starts(buf, "ssid2=") || 575 str_starts(buf, "auth_algs=") || 576 str_starts(buf, "wep_default_key=") || 577 str_starts(buf, "wep_key") || 578 str_starts(buf, "wps_state=") || 579 str_starts(buf, "wpa=") || 580 str_starts(buf, "wpa_psk=") || 581 str_starts(buf, "wpa_pairwise=") || 582 str_starts(buf, "rsn_pairwise=") || 583 str_starts(buf, "wpa_key_mgmt=") || 584 str_starts(buf, "wpa_passphrase="))) { 585 fprintf(nconf, "#WPS# %s", buf); 586 } else 587 fprintf(nconf, "%s", buf); 588 } 589 590 fclose(nconf); 591 fclose(oconf); 592 593 if (rename(tmp_fname, hapd->iface->config_fname) < 0) { 594 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated " 595 "configuration file: %s", strerror(errno)); 596 os_free(tmp_fname); 597 return -1; 598 } 599 600 os_free(tmp_fname); 601 602 /* Schedule configuration reload after short period of time to allow 603 * EAP-WSC to be finished. 604 */ 605 eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface, 606 NULL); 607 608 wpa_printf(MSG_DEBUG, "WPS: AP configuration updated"); 609 610 return 0; 611 } 612 613 614 static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred) 615 { 616 struct hostapd_data *hapd = ctx; 617 return hostapd_wps_for_each(hapd, hapd_wps_cred_cb, (void *) cred); 618 } 619 620 621 static void hostapd_wps_reenable_ap_pin(void *eloop_data, void *user_ctx) 622 { 623 struct hostapd_data *hapd = eloop_data; 624 625 if (hapd->conf->ap_setup_locked) 626 return; 627 if (hapd->ap_pin_failures_consecutive >= 10) 628 return; 629 630 wpa_printf(MSG_DEBUG, "WPS: Re-enable AP PIN"); 631 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED); 632 hapd->wps->ap_setup_locked = 0; 633 wps_registrar_update_ie(hapd->wps->registrar); 634 } 635 636 637 static int wps_pwd_auth_fail(struct hostapd_data *hapd, void *ctx) 638 { 639 struct wps_event_pwd_auth_fail *data = ctx; 640 641 if (!data->enrollee || hapd->conf->ap_pin == NULL || hapd->wps == NULL) 642 return 0; 643 644 /* 645 * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup 646 * for some time if this happens multiple times to slow down brute 647 * force attacks. 648 */ 649 hapd->ap_pin_failures++; 650 hapd->ap_pin_failures_consecutive++; 651 wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u " 652 "(%u consecutive)", 653 hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive); 654 if (hapd->ap_pin_failures < 3) 655 return 0; 656 657 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED); 658 hapd->wps->ap_setup_locked = 1; 659 660 wps_registrar_update_ie(hapd->wps->registrar); 661 662 if (!hapd->conf->ap_setup_locked && 663 hapd->ap_pin_failures_consecutive >= 10) { 664 /* 665 * In indefinite lockdown - disable automatic AP PIN 666 * reenablement. 667 */ 668 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 669 wpa_printf(MSG_DEBUG, "WPS: AP PIN disabled indefinitely"); 670 } else if (!hapd->conf->ap_setup_locked) { 671 if (hapd->ap_pin_lockout_time == 0) 672 hapd->ap_pin_lockout_time = 60; 673 else if (hapd->ap_pin_lockout_time < 365 * 24 * 60 * 60 && 674 (hapd->ap_pin_failures % 3) == 0) 675 hapd->ap_pin_lockout_time *= 2; 676 677 wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN for %u seconds", 678 hapd->ap_pin_lockout_time); 679 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 680 eloop_register_timeout(hapd->ap_pin_lockout_time, 0, 681 hostapd_wps_reenable_ap_pin, hapd, 682 NULL); 683 } 684 685 return 0; 686 } 687 688 689 static void hostapd_pwd_auth_fail(struct hostapd_data *hapd, 690 struct wps_event_pwd_auth_fail *data) 691 { 692 /* Update WPS Status - Authentication Failure */ 693 wpa_printf(MSG_DEBUG, "WPS: Authentication failure update"); 694 hapd->wps_stats.status = WPS_STATUS_FAILURE; 695 hapd->wps_stats.failure_reason = WPS_EI_AUTH_FAILURE; 696 os_memcpy(hapd->wps_stats.peer_addr, data->peer_macaddr, ETH_ALEN); 697 698 hostapd_wps_for_each(hapd, wps_pwd_auth_fail, data); 699 } 700 701 702 static int wps_ap_pin_success(struct hostapd_data *hapd, void *ctx) 703 { 704 if (hapd->conf->ap_pin == NULL || hapd->wps == NULL) 705 return 0; 706 707 if (hapd->ap_pin_failures_consecutive == 0) 708 return 0; 709 710 wpa_printf(MSG_DEBUG, "WPS: Clear consecutive AP PIN failure counter " 711 "- total validation failures %u (%u consecutive)", 712 hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive); 713 hapd->ap_pin_failures_consecutive = 0; 714 715 return 0; 716 } 717 718 719 static void hostapd_wps_ap_pin_success(struct hostapd_data *hapd) 720 { 721 hostapd_wps_for_each(hapd, wps_ap_pin_success, NULL); 722 } 723 724 725 static void hostapd_wps_event_pbc_overlap(struct hostapd_data *hapd) 726 { 727 /* Update WPS Status - PBC Overlap */ 728 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_OVERLAP; 729 } 730 731 732 static void hostapd_wps_event_pbc_timeout(struct hostapd_data *hapd) 733 { 734 /* Update WPS PBC Status:PBC Timeout */ 735 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_TIMEOUT; 736 } 737 738 739 static void hostapd_wps_event_pbc_active(struct hostapd_data *hapd) 740 { 741 /* Update WPS PBC status - Active */ 742 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_ACTIVE; 743 } 744 745 746 static void hostapd_wps_event_pbc_disable(struct hostapd_data *hapd) 747 { 748 /* Update WPS PBC status - Active */ 749 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE; 750 } 751 752 753 static void hostapd_wps_event_success(struct hostapd_data *hapd, 754 struct wps_event_success *success) 755 { 756 /* Update WPS status - Success */ 757 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE; 758 hapd->wps_stats.status = WPS_STATUS_SUCCESS; 759 os_memcpy(hapd->wps_stats.peer_addr, success->peer_macaddr, ETH_ALEN); 760 } 761 762 763 static void hostapd_wps_event_fail(struct hostapd_data *hapd, 764 struct wps_event_fail *fail) 765 { 766 /* Update WPS status - Failure */ 767 hapd->wps_stats.status = WPS_STATUS_FAILURE; 768 os_memcpy(hapd->wps_stats.peer_addr, fail->peer_macaddr, ETH_ALEN); 769 770 hapd->wps_stats.failure_reason = fail->error_indication; 771 772 if (fail->error_indication > 0 && 773 fail->error_indication < NUM_WPS_EI_VALUES) { 774 wpa_msg(hapd->msg_ctx, MSG_INFO, 775 WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)", 776 fail->msg, fail->config_error, fail->error_indication, 777 wps_ei_str(fail->error_indication)); 778 } else { 779 wpa_msg(hapd->msg_ctx, MSG_INFO, 780 WPS_EVENT_FAIL "msg=%d config_error=%d", 781 fail->msg, fail->config_error); 782 } 783 } 784 785 786 static void hostapd_wps_event_cb(void *ctx, enum wps_event event, 787 union wps_event_data *data) 788 { 789 struct hostapd_data *hapd = ctx; 790 791 switch (event) { 792 case WPS_EV_M2D: 793 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_M2D); 794 break; 795 case WPS_EV_FAIL: 796 hostapd_wps_event_fail(hapd, &data->fail); 797 break; 798 case WPS_EV_SUCCESS: 799 hostapd_wps_event_success(hapd, &data->success); 800 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_SUCCESS); 801 break; 802 case WPS_EV_PWD_AUTH_FAIL: 803 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail); 804 break; 805 case WPS_EV_PBC_OVERLAP: 806 hostapd_wps_event_pbc_overlap(hapd); 807 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_OVERLAP); 808 break; 809 case WPS_EV_PBC_TIMEOUT: 810 hostapd_wps_event_pbc_timeout(hapd); 811 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_TIMEOUT); 812 break; 813 case WPS_EV_PBC_ACTIVE: 814 hostapd_wps_event_pbc_active(hapd); 815 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ACTIVE); 816 break; 817 case WPS_EV_PBC_DISABLE: 818 hostapd_wps_event_pbc_disable(hapd); 819 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_DISABLE); 820 break; 821 case WPS_EV_ER_AP_ADD: 822 break; 823 case WPS_EV_ER_AP_REMOVE: 824 break; 825 case WPS_EV_ER_ENROLLEE_ADD: 826 break; 827 case WPS_EV_ER_ENROLLEE_REMOVE: 828 break; 829 case WPS_EV_ER_AP_SETTINGS: 830 break; 831 case WPS_EV_ER_SET_SELECTED_REGISTRAR: 832 break; 833 case WPS_EV_AP_PIN_SUCCESS: 834 hostapd_wps_ap_pin_success(hapd); 835 break; 836 } 837 if (hapd->wps_event_cb) 838 hapd->wps_event_cb(hapd->wps_event_cb_ctx, event, data); 839 } 840 841 842 static int hostapd_wps_rf_band_cb(void *ctx) 843 { 844 struct hostapd_data *hapd = ctx; 845 846 return hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ? 847 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */ 848 } 849 850 851 static void hostapd_wps_clear_ies(struct hostapd_data *hapd, int deinit_only) 852 { 853 wpabuf_free(hapd->wps_beacon_ie); 854 hapd->wps_beacon_ie = NULL; 855 856 wpabuf_free(hapd->wps_probe_resp_ie); 857 hapd->wps_probe_resp_ie = NULL; 858 859 if (deinit_only) 860 return; 861 862 hostapd_set_ap_wps_ie(hapd); 863 } 864 865 866 static int get_uuid_cb(struct hostapd_iface *iface, void *ctx) 867 { 868 const u8 **uuid = ctx; 869 size_t j; 870 871 if (iface == NULL) 872 return 0; 873 for (j = 0; j < iface->num_bss; j++) { 874 struct hostapd_data *hapd = iface->bss[j]; 875 if (hapd->wps && !hapd->conf->wps_independent && 876 !is_nil_uuid(hapd->wps->uuid)) { 877 *uuid = hapd->wps->uuid; 878 return 1; 879 } 880 } 881 882 return 0; 883 } 884 885 886 static const u8 * get_own_uuid(struct hostapd_iface *iface) 887 { 888 const u8 *uuid; 889 if (iface->interfaces == NULL || 890 iface->interfaces->for_each_interface == NULL) 891 return NULL; 892 uuid = NULL; 893 iface->interfaces->for_each_interface(iface->interfaces, get_uuid_cb, 894 &uuid); 895 return uuid; 896 } 897 898 899 static int count_interface_cb(struct hostapd_iface *iface, void *ctx) 900 { 901 int *count= ctx; 902 (*count)++; 903 return 0; 904 } 905 906 907 static int interface_count(struct hostapd_iface *iface) 908 { 909 int count = 0; 910 if (iface->interfaces == NULL || 911 iface->interfaces->for_each_interface == NULL) 912 return 0; 913 iface->interfaces->for_each_interface(iface->interfaces, 914 count_interface_cb, &count); 915 return count; 916 } 917 918 919 static int hostapd_wps_set_vendor_ext(struct hostapd_data *hapd, 920 struct wps_context *wps) 921 { 922 int i; 923 924 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) { 925 wpabuf_free(wps->dev.vendor_ext[i]); 926 wps->dev.vendor_ext[i] = NULL; 927 928 if (hapd->conf->wps_vendor_ext[i] == NULL) 929 continue; 930 931 wps->dev.vendor_ext[i] = 932 wpabuf_dup(hapd->conf->wps_vendor_ext[i]); 933 if (wps->dev.vendor_ext[i] == NULL) { 934 while (--i >= 0) 935 wpabuf_free(wps->dev.vendor_ext[i]); 936 return -1; 937 } 938 } 939 940 return 0; 941 } 942 943 944 static void hostapd_free_wps(struct wps_context *wps) 945 { 946 int i; 947 948 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) 949 wpabuf_free(wps->dev.vendor_ext[i]); 950 wps_device_data_free(&wps->dev); 951 os_free(wps->network_key); 952 hostapd_wps_nfc_clear(wps); 953 wpabuf_free(wps->dh_pubkey); 954 wpabuf_free(wps->dh_privkey); 955 os_free(wps); 956 } 957 958 959 int hostapd_init_wps(struct hostapd_data *hapd, 960 struct hostapd_bss_config *conf) 961 { 962 struct wps_context *wps; 963 struct wps_registrar_config cfg; 964 965 if (conf->wps_state == 0) { 966 hostapd_wps_clear_ies(hapd, 0); 967 return 0; 968 } 969 970 wps = os_zalloc(sizeof(*wps)); 971 if (wps == NULL) 972 return -1; 973 974 wps->cred_cb = hostapd_wps_cred_cb; 975 wps->event_cb = hostapd_wps_event_cb; 976 wps->rf_band_cb = hostapd_wps_rf_band_cb; 977 wps->cb_ctx = hapd; 978 979 os_memset(&cfg, 0, sizeof(cfg)); 980 wps->wps_state = hapd->conf->wps_state; 981 wps->ap_setup_locked = hapd->conf->ap_setup_locked; 982 if (is_nil_uuid(hapd->conf->uuid)) { 983 const u8 *uuid; 984 uuid = get_own_uuid(hapd->iface); 985 if (uuid && !conf->wps_independent) { 986 os_memcpy(wps->uuid, uuid, UUID_LEN); 987 wpa_hexdump(MSG_DEBUG, "WPS: Clone UUID from another " 988 "interface", wps->uuid, UUID_LEN); 989 } else { 990 uuid_gen_mac_addr(hapd->own_addr, wps->uuid); 991 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC " 992 "address", wps->uuid, UUID_LEN); 993 } 994 } else { 995 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN); 996 wpa_hexdump(MSG_DEBUG, "WPS: Use configured UUID", 997 wps->uuid, UUID_LEN); 998 } 999 wps->ssid_len = hapd->conf->ssid.ssid_len; 1000 os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len); 1001 wps->ap = 1; 1002 os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN); 1003 wps->dev.device_name = hapd->conf->device_name ? 1004 os_strdup(hapd->conf->device_name) : NULL; 1005 wps->dev.manufacturer = hapd->conf->manufacturer ? 1006 os_strdup(hapd->conf->manufacturer) : NULL; 1007 wps->dev.model_name = hapd->conf->model_name ? 1008 os_strdup(hapd->conf->model_name) : NULL; 1009 wps->dev.model_number = hapd->conf->model_number ? 1010 os_strdup(hapd->conf->model_number) : NULL; 1011 wps->dev.serial_number = hapd->conf->serial_number ? 1012 os_strdup(hapd->conf->serial_number) : NULL; 1013 wps->config_methods = 1014 wps_config_methods_str2bin(hapd->conf->config_methods); 1015 if ((wps->config_methods & 1016 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY | 1017 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) { 1018 wpa_printf(MSG_INFO, "WPS: Converting display to " 1019 "virtual_display for WPS 2.0 compliance"); 1020 wps->config_methods |= WPS_CONFIG_VIRT_DISPLAY; 1021 } 1022 if ((wps->config_methods & 1023 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON | 1024 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) { 1025 wpa_printf(MSG_INFO, "WPS: Converting push_button to " 1026 "virtual_push_button for WPS 2.0 compliance"); 1027 wps->config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON; 1028 } 1029 os_memcpy(wps->dev.pri_dev_type, hapd->conf->device_type, 1030 WPS_DEV_TYPE_LEN); 1031 1032 if (hostapd_wps_set_vendor_ext(hapd, wps) < 0) 1033 goto fail; 1034 1035 wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version); 1036 1037 if (conf->wps_rf_bands) { 1038 wps->dev.rf_bands = conf->wps_rf_bands; 1039 } else { 1040 wps->dev.rf_bands = 1041 hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ? 1042 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */ 1043 } 1044 1045 if (conf->wpa & WPA_PROTO_RSN) { 1046 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) 1047 wps->auth_types |= WPS_AUTH_WPA2PSK; 1048 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) 1049 wps->auth_types |= WPS_AUTH_WPA2; 1050 1051 if (conf->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)) 1052 wps->encr_types |= WPS_ENCR_AES; 1053 if (conf->rsn_pairwise & WPA_CIPHER_TKIP) 1054 wps->encr_types |= WPS_ENCR_TKIP; 1055 } 1056 1057 if (conf->wpa & WPA_PROTO_WPA) { 1058 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) 1059 wps->auth_types |= WPS_AUTH_WPAPSK; 1060 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) 1061 wps->auth_types |= WPS_AUTH_WPA; 1062 1063 if (conf->wpa_pairwise & WPA_CIPHER_CCMP) 1064 wps->encr_types |= WPS_ENCR_AES; 1065 if (conf->wpa_pairwise & WPA_CIPHER_TKIP) 1066 wps->encr_types |= WPS_ENCR_TKIP; 1067 } 1068 1069 if (conf->ssid.security_policy == SECURITY_PLAINTEXT) { 1070 wps->encr_types |= WPS_ENCR_NONE; 1071 wps->auth_types |= WPS_AUTH_OPEN; 1072 } 1073 1074 if (conf->ssid.wpa_psk_file) { 1075 /* Use per-device PSKs */ 1076 } else if (conf->ssid.wpa_passphrase) { 1077 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase); 1078 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase); 1079 } else if (conf->ssid.wpa_psk) { 1080 wps->network_key = os_malloc(2 * PMK_LEN + 1); 1081 if (wps->network_key == NULL) 1082 goto fail; 1083 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1, 1084 conf->ssid.wpa_psk->psk, PMK_LEN); 1085 wps->network_key_len = 2 * PMK_LEN; 1086 } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) { 1087 wps->network_key = os_malloc(conf->ssid.wep.len[0]); 1088 if (wps->network_key == NULL) 1089 goto fail; 1090 os_memcpy(wps->network_key, conf->ssid.wep.key[0], 1091 conf->ssid.wep.len[0]); 1092 wps->network_key_len = conf->ssid.wep.len[0]; 1093 } 1094 1095 if (conf->ssid.wpa_psk) { 1096 os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN); 1097 wps->psk_set = 1; 1098 } 1099 1100 wps->ap_auth_type = wps->auth_types; 1101 wps->ap_encr_type = wps->encr_types; 1102 if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) { 1103 /* Override parameters to enable security by default */ 1104 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK; 1105 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP; 1106 } 1107 1108 wps->ap_settings = conf->ap_settings; 1109 wps->ap_settings_len = conf->ap_settings_len; 1110 1111 cfg.new_psk_cb = hostapd_wps_new_psk_cb; 1112 cfg.set_ie_cb = hostapd_wps_set_ie_cb; 1113 cfg.pin_needed_cb = hostapd_wps_pin_needed_cb; 1114 cfg.reg_success_cb = hostapd_wps_reg_success_cb; 1115 cfg.enrollee_seen_cb = hostapd_wps_enrollee_seen_cb; 1116 cfg.cb_ctx = hapd; 1117 cfg.skip_cred_build = conf->skip_cred_build; 1118 cfg.extra_cred = conf->extra_cred; 1119 cfg.extra_cred_len = conf->extra_cred_len; 1120 cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) && 1121 conf->skip_cred_build; 1122 if (conf->ssid.security_policy == SECURITY_STATIC_WEP) 1123 cfg.static_wep_only = 1; 1124 cfg.dualband = interface_count(hapd->iface) > 1; 1125 if ((wps->dev.rf_bands & (WPS_RF_50GHZ | WPS_RF_24GHZ)) == 1126 (WPS_RF_50GHZ | WPS_RF_24GHZ)) 1127 cfg.dualband = 1; 1128 if (cfg.dualband) 1129 wpa_printf(MSG_DEBUG, "WPS: Dualband AP"); 1130 cfg.force_per_enrollee_psk = conf->force_per_enrollee_psk; 1131 1132 wps->registrar = wps_registrar_init(wps, &cfg); 1133 if (wps->registrar == NULL) { 1134 wpa_printf(MSG_ERROR, "Failed to initialize WPS Registrar"); 1135 goto fail; 1136 } 1137 1138 #ifdef CONFIG_WPS_UPNP 1139 wps->friendly_name = hapd->conf->friendly_name; 1140 wps->manufacturer_url = hapd->conf->manufacturer_url; 1141 wps->model_description = hapd->conf->model_description; 1142 wps->model_url = hapd->conf->model_url; 1143 wps->upc = hapd->conf->upc; 1144 #endif /* CONFIG_WPS_UPNP */ 1145 1146 hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd); 1147 1148 hapd->wps = wps; 1149 1150 return 0; 1151 1152 fail: 1153 hostapd_free_wps(wps); 1154 return -1; 1155 } 1156 1157 1158 int hostapd_init_wps_complete(struct hostapd_data *hapd) 1159 { 1160 struct wps_context *wps = hapd->wps; 1161 1162 if (wps == NULL) 1163 return 0; 1164 1165 #ifdef CONFIG_WPS_UPNP 1166 if (hostapd_wps_upnp_init(hapd, wps) < 0) { 1167 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP"); 1168 wps_registrar_deinit(wps->registrar); 1169 hostapd_free_wps(wps); 1170 hapd->wps = NULL; 1171 return -1; 1172 } 1173 #endif /* CONFIG_WPS_UPNP */ 1174 1175 return 0; 1176 } 1177 1178 1179 static void hostapd_wps_nfc_clear(struct wps_context *wps) 1180 { 1181 #ifdef CONFIG_WPS_NFC 1182 wpa_printf(MSG_DEBUG, "WPS: Clear NFC Tag context %p", wps); 1183 wps->ap_nfc_dev_pw_id = 0; 1184 wpabuf_free(wps->ap_nfc_dh_pubkey); 1185 wps->ap_nfc_dh_pubkey = NULL; 1186 wpabuf_free(wps->ap_nfc_dh_privkey); 1187 wps->ap_nfc_dh_privkey = NULL; 1188 wpabuf_free(wps->ap_nfc_dev_pw); 1189 wps->ap_nfc_dev_pw = NULL; 1190 #endif /* CONFIG_WPS_NFC */ 1191 } 1192 1193 1194 void hostapd_deinit_wps(struct hostapd_data *hapd) 1195 { 1196 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 1197 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1198 eloop_cancel_timeout(wps_reload_config, hapd->iface, NULL); 1199 if (hapd->wps == NULL) { 1200 hostapd_wps_clear_ies(hapd, 1); 1201 return; 1202 } 1203 #ifdef CONFIG_WPS_UPNP 1204 hostapd_wps_upnp_deinit(hapd); 1205 #endif /* CONFIG_WPS_UPNP */ 1206 wps_registrar_deinit(hapd->wps->registrar); 1207 wps_free_pending_msgs(hapd->wps->upnp_msgs); 1208 hostapd_free_wps(hapd->wps); 1209 hapd->wps = NULL; 1210 hostapd_wps_clear_ies(hapd, 1); 1211 } 1212 1213 1214 void hostapd_update_wps(struct hostapd_data *hapd) 1215 { 1216 if (hapd->wps == NULL) 1217 return; 1218 1219 #ifdef CONFIG_WPS_UPNP 1220 hapd->wps->friendly_name = hapd->conf->friendly_name; 1221 hapd->wps->manufacturer_url = hapd->conf->manufacturer_url; 1222 hapd->wps->model_description = hapd->conf->model_description; 1223 hapd->wps->model_url = hapd->conf->model_url; 1224 hapd->wps->upc = hapd->conf->upc; 1225 #endif /* CONFIG_WPS_UPNP */ 1226 1227 hostapd_wps_set_vendor_ext(hapd, hapd->wps); 1228 1229 if (hapd->conf->wps_state) 1230 wps_registrar_update_ie(hapd->wps->registrar); 1231 else 1232 hostapd_deinit_wps(hapd); 1233 } 1234 1235 1236 struct wps_add_pin_data { 1237 const u8 *addr; 1238 const u8 *uuid; 1239 const u8 *pin; 1240 size_t pin_len; 1241 int timeout; 1242 int added; 1243 }; 1244 1245 1246 static int wps_add_pin(struct hostapd_data *hapd, void *ctx) 1247 { 1248 struct wps_add_pin_data *data = ctx; 1249 int ret; 1250 1251 if (hapd->wps == NULL) 1252 return 0; 1253 ret = wps_registrar_add_pin(hapd->wps->registrar, data->addr, 1254 data->uuid, data->pin, data->pin_len, 1255 data->timeout); 1256 if (ret == 0) 1257 data->added++; 1258 return ret; 1259 } 1260 1261 1262 int hostapd_wps_add_pin(struct hostapd_data *hapd, const u8 *addr, 1263 const char *uuid, const char *pin, int timeout) 1264 { 1265 u8 u[UUID_LEN]; 1266 struct wps_add_pin_data data; 1267 1268 data.addr = addr; 1269 data.uuid = u; 1270 data.pin = (const u8 *) pin; 1271 data.pin_len = os_strlen(pin); 1272 data.timeout = timeout; 1273 data.added = 0; 1274 1275 if (os_strcmp(uuid, "any") == 0) 1276 data.uuid = NULL; 1277 else { 1278 if (uuid_str2bin(uuid, u)) 1279 return -1; 1280 data.uuid = u; 1281 } 1282 if (hostapd_wps_for_each(hapd, wps_add_pin, &data) < 0) 1283 return -1; 1284 return data.added ? 0 : -1; 1285 } 1286 1287 1288 static int wps_button_pushed(struct hostapd_data *hapd, void *ctx) 1289 { 1290 const u8 *p2p_dev_addr = ctx; 1291 if (hapd->wps == NULL) 1292 return -1; 1293 return wps_registrar_button_pushed(hapd->wps->registrar, p2p_dev_addr); 1294 } 1295 1296 1297 int hostapd_wps_button_pushed(struct hostapd_data *hapd, 1298 const u8 *p2p_dev_addr) 1299 { 1300 return hostapd_wps_for_each(hapd, wps_button_pushed, 1301 (void *) p2p_dev_addr); 1302 } 1303 1304 1305 static int wps_cancel(struct hostapd_data *hapd, void *ctx) 1306 { 1307 if (hapd->wps == NULL) 1308 return -1; 1309 1310 wps_registrar_wps_cancel(hapd->wps->registrar); 1311 ap_for_each_sta(hapd, ap_sta_wps_cancel, NULL); 1312 1313 return 0; 1314 } 1315 1316 1317 int hostapd_wps_cancel(struct hostapd_data *hapd) 1318 { 1319 return hostapd_wps_for_each(hapd, wps_cancel, NULL); 1320 } 1321 1322 1323 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da, 1324 const u8 *bssid, 1325 const u8 *ie, size_t ie_len, 1326 int ssi_signal) 1327 { 1328 struct hostapd_data *hapd = ctx; 1329 struct wpabuf *wps_ie; 1330 struct ieee802_11_elems elems; 1331 1332 if (hapd->wps == NULL) 1333 return 0; 1334 1335 if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) { 1336 wpa_printf(MSG_DEBUG, "WPS: Could not parse ProbeReq from " 1337 MACSTR, MAC2STR(addr)); 1338 return 0; 1339 } 1340 1341 if (elems.ssid && elems.ssid_len > 0 && 1342 (elems.ssid_len != hapd->conf->ssid.ssid_len || 1343 os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) != 1344 0)) 1345 return 0; /* Not for us */ 1346 1347 wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA); 1348 if (wps_ie == NULL) 1349 return 0; 1350 if (wps_validate_probe_req(wps_ie, addr) < 0) { 1351 wpabuf_free(wps_ie); 1352 return 0; 1353 } 1354 1355 if (wpabuf_len(wps_ie) > 0) { 1356 int p2p_wildcard = 0; 1357 #ifdef CONFIG_P2P 1358 if (elems.ssid && elems.ssid_len == P2P_WILDCARD_SSID_LEN && 1359 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, 1360 P2P_WILDCARD_SSID_LEN) == 0) 1361 p2p_wildcard = 1; 1362 #endif /* CONFIG_P2P */ 1363 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie, 1364 p2p_wildcard); 1365 #ifdef CONFIG_WPS_UPNP 1366 /* FIX: what exactly should be included in the WLANEvent? 1367 * WPS attributes? Full ProbeReq frame? */ 1368 if (!p2p_wildcard) 1369 upnp_wps_device_send_wlan_event( 1370 hapd->wps_upnp, addr, 1371 UPNP_WPS_WLANEVENT_TYPE_PROBE, wps_ie); 1372 #endif /* CONFIG_WPS_UPNP */ 1373 } 1374 1375 wpabuf_free(wps_ie); 1376 1377 return 0; 1378 } 1379 1380 1381 #ifdef CONFIG_WPS_UPNP 1382 1383 static int hostapd_rx_req_put_wlan_response( 1384 void *priv, enum upnp_wps_wlanevent_type ev_type, 1385 const u8 *mac_addr, const struct wpabuf *msg, 1386 enum wps_msg_type msg_type) 1387 { 1388 struct hostapd_data *hapd = priv; 1389 struct sta_info *sta; 1390 struct upnp_pending_message *p; 1391 1392 wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr=" 1393 MACSTR, ev_type, MAC2STR(mac_addr)); 1394 wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage", 1395 wpabuf_head(msg), wpabuf_len(msg)); 1396 if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) { 1397 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected " 1398 "PutWLANResponse WLANEventType %d", ev_type); 1399 return -1; 1400 } 1401 1402 /* 1403 * EAP response to ongoing to WPS Registration. Send it to EAP-WSC 1404 * server implementation for delivery to the peer. 1405 */ 1406 1407 sta = ap_get_sta(hapd, mac_addr); 1408 #ifndef CONFIG_WPS_STRICT 1409 if (!sta) { 1410 /* 1411 * Workaround - Intel wsccmd uses bogus NewWLANEventMAC: 1412 * Pick STA that is in an ongoing WPS registration without 1413 * checking the MAC address. 1414 */ 1415 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based " 1416 "on NewWLANEventMAC; try wildcard match"); 1417 for (sta = hapd->sta_list; sta; sta = sta->next) { 1418 if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS)) 1419 break; 1420 } 1421 } 1422 #endif /* CONFIG_WPS_STRICT */ 1423 1424 if (!sta || !(sta->flags & WLAN_STA_WPS)) { 1425 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found"); 1426 return 0; 1427 } 1428 1429 if (!sta->eapol_sm) { 1430 /* 1431 * This can happen, e.g., if an ER sends an extra message after 1432 * the station has disassociated (but not fully 1433 * deauthenticated). 1434 */ 1435 wpa_printf(MSG_DEBUG, "WPS UPnP: Matching STA did not have EAPOL state machine initialized"); 1436 return 0; 1437 } 1438 1439 p = os_zalloc(sizeof(*p)); 1440 if (p == NULL) 1441 return -1; 1442 os_memcpy(p->addr, sta->addr, ETH_ALEN); 1443 p->msg = wpabuf_dup(msg); 1444 p->type = msg_type; 1445 p->next = hapd->wps->upnp_msgs; 1446 hapd->wps->upnp_msgs = p; 1447 1448 return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap); 1449 } 1450 1451 1452 static int hostapd_wps_upnp_init(struct hostapd_data *hapd, 1453 struct wps_context *wps) 1454 { 1455 struct upnp_wps_device_ctx *ctx; 1456 1457 if (!hapd->conf->upnp_iface) 1458 return 0; 1459 ctx = os_zalloc(sizeof(*ctx)); 1460 if (ctx == NULL) 1461 return -1; 1462 1463 ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response; 1464 if (hapd->conf->ap_pin) 1465 ctx->ap_pin = os_strdup(hapd->conf->ap_pin); 1466 1467 hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd, 1468 hapd->conf->upnp_iface); 1469 if (hapd->wps_upnp == NULL) 1470 return -1; 1471 wps->wps_upnp = hapd->wps_upnp; 1472 1473 return 0; 1474 } 1475 1476 1477 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd) 1478 { 1479 upnp_wps_device_deinit(hapd->wps_upnp, hapd); 1480 } 1481 1482 #endif /* CONFIG_WPS_UPNP */ 1483 1484 1485 int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr, 1486 char *buf, size_t buflen) 1487 { 1488 if (hapd->wps == NULL) 1489 return 0; 1490 return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen); 1491 } 1492 1493 1494 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx) 1495 { 1496 struct hostapd_data *hapd = eloop_data; 1497 wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out"); 1498 hostapd_wps_ap_pin_disable(hapd); 1499 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_PIN_DISABLED); 1500 } 1501 1502 1503 static void hostapd_wps_ap_pin_enable(struct hostapd_data *hapd, int timeout) 1504 { 1505 wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout); 1506 hapd->ap_pin_failures = 0; 1507 hapd->ap_pin_failures_consecutive = 0; 1508 hapd->conf->ap_setup_locked = 0; 1509 if (hapd->wps->ap_setup_locked) { 1510 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED); 1511 hapd->wps->ap_setup_locked = 0; 1512 wps_registrar_update_ie(hapd->wps->registrar); 1513 } 1514 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1515 if (timeout > 0) 1516 eloop_register_timeout(timeout, 0, 1517 hostapd_wps_ap_pin_timeout, hapd, NULL); 1518 } 1519 1520 1521 static int wps_ap_pin_disable(struct hostapd_data *hapd, void *ctx) 1522 { 1523 os_free(hapd->conf->ap_pin); 1524 hapd->conf->ap_pin = NULL; 1525 #ifdef CONFIG_WPS_UPNP 1526 upnp_wps_set_ap_pin(hapd->wps_upnp, NULL); 1527 #endif /* CONFIG_WPS_UPNP */ 1528 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1529 return 0; 1530 } 1531 1532 1533 void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd) 1534 { 1535 wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN"); 1536 hostapd_wps_for_each(hapd, wps_ap_pin_disable, NULL); 1537 } 1538 1539 1540 struct wps_ap_pin_data { 1541 char pin_txt[9]; 1542 int timeout; 1543 }; 1544 1545 1546 static int wps_ap_pin_set(struct hostapd_data *hapd, void *ctx) 1547 { 1548 struct wps_ap_pin_data *data = ctx; 1549 os_free(hapd->conf->ap_pin); 1550 hapd->conf->ap_pin = os_strdup(data->pin_txt); 1551 #ifdef CONFIG_WPS_UPNP 1552 upnp_wps_set_ap_pin(hapd->wps_upnp, data->pin_txt); 1553 #endif /* CONFIG_WPS_UPNP */ 1554 hostapd_wps_ap_pin_enable(hapd, data->timeout); 1555 return 0; 1556 } 1557 1558 1559 const char * hostapd_wps_ap_pin_random(struct hostapd_data *hapd, int timeout) 1560 { 1561 unsigned int pin; 1562 struct wps_ap_pin_data data; 1563 1564 pin = wps_generate_pin(); 1565 os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%08u", pin); 1566 data.timeout = timeout; 1567 hostapd_wps_for_each(hapd, wps_ap_pin_set, &data); 1568 return hapd->conf->ap_pin; 1569 } 1570 1571 1572 const char * hostapd_wps_ap_pin_get(struct hostapd_data *hapd) 1573 { 1574 return hapd->conf->ap_pin; 1575 } 1576 1577 1578 int hostapd_wps_ap_pin_set(struct hostapd_data *hapd, const char *pin, 1579 int timeout) 1580 { 1581 struct wps_ap_pin_data data; 1582 int ret; 1583 1584 ret = os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%s", pin); 1585 if (os_snprintf_error(sizeof(data.pin_txt), ret)) 1586 return -1; 1587 data.timeout = timeout; 1588 return hostapd_wps_for_each(hapd, wps_ap_pin_set, &data); 1589 } 1590 1591 1592 static int wps_update_ie(struct hostapd_data *hapd, void *ctx) 1593 { 1594 if (hapd->wps) 1595 wps_registrar_update_ie(hapd->wps->registrar); 1596 return 0; 1597 } 1598 1599 1600 void hostapd_wps_update_ie(struct hostapd_data *hapd) 1601 { 1602 hostapd_wps_for_each(hapd, wps_update_ie, NULL); 1603 } 1604 1605 1606 int hostapd_wps_config_ap(struct hostapd_data *hapd, const char *ssid, 1607 const char *auth, const char *encr, const char *key) 1608 { 1609 struct wps_credential cred; 1610 size_t len; 1611 1612 os_memset(&cred, 0, sizeof(cred)); 1613 1614 len = os_strlen(ssid); 1615 if ((len & 1) || len > 2 * sizeof(cred.ssid) || 1616 hexstr2bin(ssid, cred.ssid, len / 2)) 1617 return -1; 1618 cred.ssid_len = len / 2; 1619 1620 if (os_strncmp(auth, "OPEN", 4) == 0) 1621 cred.auth_type = WPS_AUTH_OPEN; 1622 else if (os_strncmp(auth, "WPAPSK", 6) == 0) 1623 cred.auth_type = WPS_AUTH_WPAPSK; 1624 else if (os_strncmp(auth, "WPA2PSK", 7) == 0) 1625 cred.auth_type = WPS_AUTH_WPA2PSK; 1626 else 1627 return -1; 1628 1629 if (encr) { 1630 if (os_strncmp(encr, "NONE", 4) == 0) 1631 cred.encr_type = WPS_ENCR_NONE; 1632 else if (os_strncmp(encr, "TKIP", 4) == 0) 1633 cred.encr_type = WPS_ENCR_TKIP; 1634 else if (os_strncmp(encr, "CCMP", 4) == 0) 1635 cred.encr_type = WPS_ENCR_AES; 1636 else 1637 return -1; 1638 } else 1639 cred.encr_type = WPS_ENCR_NONE; 1640 1641 if (key) { 1642 len = os_strlen(key); 1643 if ((len & 1) || len > 2 * sizeof(cred.key) || 1644 hexstr2bin(key, cred.key, len / 2)) 1645 return -1; 1646 cred.key_len = len / 2; 1647 } 1648 1649 return wps_registrar_config_ap(hapd->wps->registrar, &cred); 1650 } 1651 1652 1653 #ifdef CONFIG_WPS_NFC 1654 1655 struct wps_nfc_password_token_data { 1656 const u8 *oob_dev_pw; 1657 size_t oob_dev_pw_len; 1658 int added; 1659 }; 1660 1661 1662 static int wps_add_nfc_password_token(struct hostapd_data *hapd, void *ctx) 1663 { 1664 struct wps_nfc_password_token_data *data = ctx; 1665 int ret; 1666 1667 if (hapd->wps == NULL) 1668 return 0; 1669 ret = wps_registrar_add_nfc_password_token(hapd->wps->registrar, 1670 data->oob_dev_pw, 1671 data->oob_dev_pw_len); 1672 if (ret == 0) 1673 data->added++; 1674 return ret; 1675 } 1676 1677 1678 static int hostapd_wps_add_nfc_password_token(struct hostapd_data *hapd, 1679 struct wps_parse_attr *attr) 1680 { 1681 struct wps_nfc_password_token_data data; 1682 1683 data.oob_dev_pw = attr->oob_dev_password; 1684 data.oob_dev_pw_len = attr->oob_dev_password_len; 1685 data.added = 0; 1686 if (hostapd_wps_for_each(hapd, wps_add_nfc_password_token, &data) < 0) 1687 return -1; 1688 return data.added ? 0 : -1; 1689 } 1690 1691 1692 static int hostapd_wps_nfc_tag_process(struct hostapd_data *hapd, 1693 const struct wpabuf *wps) 1694 { 1695 struct wps_parse_attr attr; 1696 1697 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps); 1698 1699 if (wps_parse_msg(wps, &attr)) { 1700 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag"); 1701 return -1; 1702 } 1703 1704 if (attr.oob_dev_password) 1705 return hostapd_wps_add_nfc_password_token(hapd, &attr); 1706 1707 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag"); 1708 return -1; 1709 } 1710 1711 1712 int hostapd_wps_nfc_tag_read(struct hostapd_data *hapd, 1713 const struct wpabuf *data) 1714 { 1715 const struct wpabuf *wps = data; 1716 struct wpabuf *tmp = NULL; 1717 int ret; 1718 1719 if (wpabuf_len(data) < 4) 1720 return -1; 1721 1722 if (*wpabuf_head_u8(data) != 0x10) { 1723 /* Assume this contains full NDEF record */ 1724 tmp = ndef_parse_wifi(data); 1725 if (tmp == NULL) { 1726 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF"); 1727 return -1; 1728 } 1729 wps = tmp; 1730 } 1731 1732 ret = hostapd_wps_nfc_tag_process(hapd, wps); 1733 wpabuf_free(tmp); 1734 return ret; 1735 } 1736 1737 1738 struct wpabuf * hostapd_wps_nfc_config_token(struct hostapd_data *hapd, 1739 int ndef) 1740 { 1741 struct wpabuf *ret; 1742 1743 if (hapd->wps == NULL) 1744 return NULL; 1745 1746 ret = wps_get_oob_cred(hapd->wps, hostapd_wps_rf_band_cb(hapd), 1747 hapd->iconf->channel); 1748 if (ndef && ret) { 1749 struct wpabuf *tmp; 1750 tmp = ndef_build_wifi(ret); 1751 wpabuf_free(ret); 1752 if (tmp == NULL) 1753 return NULL; 1754 ret = tmp; 1755 } 1756 1757 return ret; 1758 } 1759 1760 1761 struct wpabuf * hostapd_wps_nfc_hs_cr(struct hostapd_data *hapd, int ndef) 1762 { 1763 struct wpabuf *ret; 1764 1765 if (hapd->wps == NULL) 1766 return NULL; 1767 1768 if (hapd->conf->wps_nfc_dh_pubkey == NULL) { 1769 struct wps_context *wps = hapd->wps; 1770 if (wps_nfc_gen_dh(&hapd->conf->wps_nfc_dh_pubkey, 1771 &hapd->conf->wps_nfc_dh_privkey) < 0) 1772 return NULL; 1773 hostapd_wps_nfc_clear(wps); 1774 wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER; 1775 wps->ap_nfc_dh_pubkey = 1776 wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey); 1777 wps->ap_nfc_dh_privkey = 1778 wpabuf_dup(hapd->conf->wps_nfc_dh_privkey); 1779 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) { 1780 hostapd_wps_nfc_clear(wps); 1781 return NULL; 1782 } 1783 } 1784 1785 ret = wps_build_nfc_handover_sel(hapd->wps, 1786 hapd->conf->wps_nfc_dh_pubkey, 1787 hapd->own_addr, hapd->iface->freq); 1788 1789 if (ndef && ret) { 1790 struct wpabuf *tmp; 1791 tmp = ndef_build_wifi(ret); 1792 wpabuf_free(ret); 1793 if (tmp == NULL) 1794 return NULL; 1795 ret = tmp; 1796 } 1797 1798 return ret; 1799 } 1800 1801 1802 int hostapd_wps_nfc_report_handover(struct hostapd_data *hapd, 1803 const struct wpabuf *req, 1804 const struct wpabuf *sel) 1805 { 1806 struct wpabuf *wps; 1807 int ret = -1; 1808 u16 wsc_len; 1809 const u8 *pos; 1810 struct wpabuf msg; 1811 struct wps_parse_attr attr; 1812 u16 dev_pw_id; 1813 1814 /* 1815 * Enrollee/station is always initiator of the NFC connection handover, 1816 * so use the request message here to find Enrollee public key hash. 1817 */ 1818 wps = ndef_parse_wifi(req); 1819 if (wps == NULL) 1820 return -1; 1821 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc " 1822 "payload from NFC connection handover"); 1823 wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps); 1824 if (wpabuf_len(wps) < 2) { 1825 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request " 1826 "Message"); 1827 goto out; 1828 } 1829 pos = wpabuf_head(wps); 1830 wsc_len = WPA_GET_BE16(pos); 1831 if (wsc_len > wpabuf_len(wps) - 2) { 1832 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) " 1833 "in rt Wi-Fi Handover Request Message", wsc_len); 1834 goto out; 1835 } 1836 pos += 2; 1837 1838 wpa_hexdump(MSG_DEBUG, 1839 "WPS: WSC attributes in Wi-Fi Handover Request Message", 1840 pos, wsc_len); 1841 if (wsc_len < wpabuf_len(wps) - 2) { 1842 wpa_hexdump(MSG_DEBUG, 1843 "WPS: Ignore extra data after WSC attributes", 1844 pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len); 1845 } 1846 1847 wpabuf_set(&msg, pos, wsc_len); 1848 ret = wps_parse_msg(&msg, &attr); 1849 if (ret < 0) { 1850 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in " 1851 "Wi-Fi Handover Request Message"); 1852 goto out; 1853 } 1854 1855 if (attr.oob_dev_password == NULL || 1856 attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) { 1857 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password " 1858 "included in Wi-Fi Handover Request Message"); 1859 ret = -1; 1860 goto out; 1861 } 1862 1863 if (attr.uuid_e == NULL) { 1864 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi " 1865 "Handover Request Message"); 1866 ret = -1; 1867 goto out; 1868 } 1869 1870 wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN); 1871 1872 wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password", 1873 attr.oob_dev_password, attr.oob_dev_password_len); 1874 dev_pw_id = WPA_GET_BE16(attr.oob_dev_password + 1875 WPS_OOB_PUBKEY_HASH_LEN); 1876 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) { 1877 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID " 1878 "%u in Wi-Fi Handover Request Message", dev_pw_id); 1879 ret = -1; 1880 goto out; 1881 } 1882 wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash", 1883 attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN); 1884 1885 ret = wps_registrar_add_nfc_pw_token(hapd->wps->registrar, 1886 attr.oob_dev_password, 1887 DEV_PW_NFC_CONNECTION_HANDOVER, 1888 NULL, 0, 1); 1889 1890 out: 1891 wpabuf_free(wps); 1892 return ret; 1893 } 1894 1895 1896 struct wpabuf * hostapd_wps_nfc_token_gen(struct hostapd_data *hapd, int ndef) 1897 { 1898 if (hapd->conf->wps_nfc_pw_from_config) { 1899 return wps_nfc_token_build(ndef, 1900 hapd->conf->wps_nfc_dev_pw_id, 1901 hapd->conf->wps_nfc_dh_pubkey, 1902 hapd->conf->wps_nfc_dev_pw); 1903 } 1904 1905 return wps_nfc_token_gen(ndef, &hapd->conf->wps_nfc_dev_pw_id, 1906 &hapd->conf->wps_nfc_dh_pubkey, 1907 &hapd->conf->wps_nfc_dh_privkey, 1908 &hapd->conf->wps_nfc_dev_pw); 1909 } 1910 1911 1912 int hostapd_wps_nfc_token_enable(struct hostapd_data *hapd) 1913 { 1914 struct wps_context *wps = hapd->wps; 1915 struct wpabuf *pw; 1916 1917 if (wps == NULL) 1918 return -1; 1919 1920 if (!hapd->conf->wps_nfc_dh_pubkey || 1921 !hapd->conf->wps_nfc_dh_privkey || 1922 !hapd->conf->wps_nfc_dev_pw || 1923 !hapd->conf->wps_nfc_dev_pw_id) 1924 return -1; 1925 1926 hostapd_wps_nfc_clear(wps); 1927 wpa_printf(MSG_DEBUG, 1928 "WPS: Enable NFC Tag (Dev Pw Id %u) for AP interface %s (context %p)", 1929 hapd->conf->wps_nfc_dev_pw_id, hapd->conf->iface, wps); 1930 wps->ap_nfc_dev_pw_id = hapd->conf->wps_nfc_dev_pw_id; 1931 wps->ap_nfc_dh_pubkey = wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey); 1932 wps->ap_nfc_dh_privkey = wpabuf_dup(hapd->conf->wps_nfc_dh_privkey); 1933 pw = hapd->conf->wps_nfc_dev_pw; 1934 wps->ap_nfc_dev_pw = wpabuf_alloc( 1935 wpabuf_len(pw) * 2 + 1); 1936 if (wps->ap_nfc_dev_pw) { 1937 wpa_snprintf_hex_uppercase( 1938 (char *) wpabuf_put(wps->ap_nfc_dev_pw, 1939 wpabuf_len(pw) * 2), 1940 wpabuf_len(pw) * 2 + 1, 1941 wpabuf_head(pw), wpabuf_len(pw)); 1942 } 1943 1944 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey || 1945 !wps->ap_nfc_dev_pw) { 1946 hostapd_wps_nfc_clear(wps); 1947 return -1; 1948 } 1949 1950 return 0; 1951 } 1952 1953 1954 void hostapd_wps_nfc_token_disable(struct hostapd_data *hapd) 1955 { 1956 wpa_printf(MSG_DEBUG, "WPS: Disable NFC token for AP interface %s", 1957 hapd->conf->iface); 1958 hostapd_wps_nfc_clear(hapd->wps); 1959 } 1960 1961 #endif /* CONFIG_WPS_NFC */ 1962