1/* 2 * hostapd / WPS integration 3 * Copyright (c) 2008-2016, Jouni Malinen <j@w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9#include "utils/includes.h" 10 11#include "utils/common.h" 12#include "utils/eloop.h" 13#include "utils/uuid.h" 14#include "common/wpa_ctrl.h" 15#include "common/ieee802_11_defs.h" 16#include "common/ieee802_11_common.h" 17#include "eapol_auth/eapol_auth_sm.h" 18#include "eapol_auth/eapol_auth_sm_i.h" 19#include "wps/wps.h" 20#include "wps/wps_defs.h" 21#include "wps/wps_dev_attr.h" 22#include "wps/wps_attr_parse.h" 23#include "hostapd.h" 24#include "ap_config.h" 25#include "ap_drv_ops.h" 26#include "beacon.h" 27#include "sta_info.h" 28#include "wps_hostapd.h" 29 30 31#ifdef CONFIG_WPS_UPNP 32#include "wps/wps_upnp.h" 33static int hostapd_wps_upnp_init(struct hostapd_data *hapd, 34 struct wps_context *wps); 35static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd); 36#endif /* CONFIG_WPS_UPNP */ 37 38static 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); 42static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx); 43static void hostapd_wps_nfc_clear(struct wps_context *wps); 44 45 46struct 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 53static 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 78static 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 95static 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 157static 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 171static 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 210struct 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 217static 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 227static 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 249static 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 272static int str_starts(const char *str, const char *start) 273{ 274 return os_strncmp(str, start, os_strlen(start)) == 0; 275} 276 277 278static 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 291void 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 305static 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 319static 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 401static 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->encr_types_rsn = cred->encr_type; 449 hapd->wps->encr_types_wpa = cred->encr_type; 450 hapd->wps->auth_types = cred->auth_type; 451 hapd->wps->ap_encr_type = cred->encr_type; 452 hapd->wps->ap_auth_type = cred->auth_type; 453 if (cred->key_len == 0) { 454 os_free(hapd->wps->network_key); 455 hapd->wps->network_key = NULL; 456 hapd->wps->network_key_len = 0; 457 } else if ((cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK)) && 458 (cred->key_len < 8 || cred->key_len > 2 * PMK_LEN)) { 459 wpa_printf(MSG_INFO, "WPS: Invalid key length %lu for WPA/WPA2", 460 (unsigned long) cred->key_len); 461 return -1; 462 } else { 463 if (hapd->wps->network_key == NULL || 464 hapd->wps->network_key_len < cred->key_len) { 465 hapd->wps->network_key_len = 0; 466 os_free(hapd->wps->network_key); 467 hapd->wps->network_key = os_malloc(cred->key_len); 468 if (hapd->wps->network_key == NULL) 469 return -1; 470 } 471 hapd->wps->network_key_len = cred->key_len; 472 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len); 473 } 474 hapd->wps->wps_state = WPS_STATE_CONFIGURED; 475 476 if (hapd->iface->config_fname == NULL) 477 return hapd_wps_reconfig_in_memory(hapd, cred); 478 len = os_strlen(hapd->iface->config_fname) + 5; 479 tmp_fname = os_malloc(len); 480 if (tmp_fname == NULL) 481 return -1; 482 os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname); 483 484 oconf = fopen(hapd->iface->config_fname, "r"); 485 if (oconf == NULL) { 486 wpa_printf(MSG_WARNING, "WPS: Could not open current " 487 "configuration file"); 488 os_free(tmp_fname); 489 return -1; 490 } 491 492 nconf = fopen(tmp_fname, "w"); 493 if (nconf == NULL) { 494 wpa_printf(MSG_WARNING, "WPS: Could not write updated " 495 "configuration file"); 496 os_free(tmp_fname); 497 fclose(oconf); 498 return -1; 499 } 500 501 fprintf(nconf, "# WPS configuration - START\n"); 502 503 fprintf(nconf, "wps_state=2\n"); 504 505 if (is_hex(cred->ssid, cred->ssid_len)) { 506 fprintf(nconf, "ssid2="); 507 for (i = 0; i < cred->ssid_len; i++) 508 fprintf(nconf, "%02x", cred->ssid[i]); 509 fprintf(nconf, "\n"); 510 } else { 511 fprintf(nconf, "ssid="); 512 for (i = 0; i < cred->ssid_len; i++) 513 fputc(cred->ssid[i], nconf); 514 fprintf(nconf, "\n"); 515 } 516 517 if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) && 518 (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))) 519 wpa = 3; 520 else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) 521 wpa = 2; 522 else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)) 523 wpa = 1; 524 else 525 wpa = 0; 526 527 if (wpa) { 528 char *prefix; 529 fprintf(nconf, "wpa=%d\n", wpa); 530 531 fprintf(nconf, "wpa_key_mgmt="); 532 prefix = ""; 533 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) { 534 fprintf(nconf, "WPA-EAP"); 535 prefix = " "; 536 } 537 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK)) 538 fprintf(nconf, "%sWPA-PSK", prefix); 539 fprintf(nconf, "\n"); 540 541 fprintf(nconf, "wpa_pairwise="); 542 prefix = ""; 543 if (cred->encr_type & WPS_ENCR_AES) { 544 if (hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD) 545 fprintf(nconf, "GCMP"); 546 else 547 fprintf(nconf, "CCMP"); 548 549 prefix = " "; 550 } 551 if (cred->encr_type & WPS_ENCR_TKIP) { 552 fprintf(nconf, "%sTKIP", prefix); 553 } 554 fprintf(nconf, "\n"); 555 556 if (cred->key_len >= 8 && cred->key_len < 64) { 557 fprintf(nconf, "wpa_passphrase="); 558 for (i = 0; i < cred->key_len; i++) 559 fputc(cred->key[i], nconf); 560 fprintf(nconf, "\n"); 561 } else if (cred->key_len == 64) { 562 fprintf(nconf, "wpa_psk="); 563 for (i = 0; i < cred->key_len; i++) 564 fputc(cred->key[i], nconf); 565 fprintf(nconf, "\n"); 566 } else { 567 wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu " 568 "for WPA/WPA2", 569 (unsigned long) cred->key_len); 570 } 571 572 fprintf(nconf, "auth_algs=1\n"); 573 } else { 574 /* 575 * WPS 2.0 does not allow WEP to be configured, so no need to 576 * process that option here either. 577 */ 578 fprintf(nconf, "auth_algs=1\n"); 579 } 580 581 fprintf(nconf, "# WPS configuration - END\n"); 582 583 multi_bss = 0; 584 while (fgets(buf, sizeof(buf), oconf)) { 585 if (os_strncmp(buf, "bss=", 4) == 0) 586 multi_bss = 1; 587 if (!multi_bss && 588 (str_starts(buf, "ssid=") || 589 str_starts(buf, "ssid2=") || 590 str_starts(buf, "auth_algs=") || 591 str_starts(buf, "wep_default_key=") || 592 str_starts(buf, "wep_key") || 593 str_starts(buf, "wps_state=") || 594 str_starts(buf, "wpa=") || 595 str_starts(buf, "wpa_psk=") || 596 str_starts(buf, "wpa_pairwise=") || 597 str_starts(buf, "rsn_pairwise=") || 598 str_starts(buf, "wpa_key_mgmt=") || 599 str_starts(buf, "wpa_passphrase="))) { 600 fprintf(nconf, "#WPS# %s", buf); 601 } else 602 fprintf(nconf, "%s", buf); 603 } 604 605 fclose(nconf); 606 fclose(oconf); 607 608 if (rename(tmp_fname, hapd->iface->config_fname) < 0) { 609 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated " 610 "configuration file: %s", strerror(errno)); 611 os_free(tmp_fname); 612 return -1; 613 } 614 615 os_free(tmp_fname); 616 617 /* Schedule configuration reload after short period of time to allow 618 * EAP-WSC to be finished. 619 */ 620 eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface, 621 NULL); 622 623 wpa_printf(MSG_DEBUG, "WPS: AP configuration updated"); 624 625 return 0; 626} 627 628 629static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred) 630{ 631 struct hostapd_data *hapd = ctx; 632 return hostapd_wps_for_each(hapd, hapd_wps_cred_cb, (void *) cred); 633} 634 635 636static void hostapd_wps_reenable_ap_pin(void *eloop_data, void *user_ctx) 637{ 638 struct hostapd_data *hapd = eloop_data; 639 640 if (hapd->conf->ap_setup_locked) 641 return; 642 if (hapd->ap_pin_failures_consecutive >= 10) 643 return; 644 645 wpa_printf(MSG_DEBUG, "WPS: Re-enable AP PIN"); 646 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED); 647 hapd->wps->ap_setup_locked = 0; 648 wps_registrar_update_ie(hapd->wps->registrar); 649} 650 651 652static int wps_pwd_auth_fail(struct hostapd_data *hapd, void *ctx) 653{ 654 struct wps_event_pwd_auth_fail *data = ctx; 655 656 if (!data->enrollee || hapd->conf->ap_pin == NULL || hapd->wps == NULL) 657 return 0; 658 659 /* 660 * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup 661 * for some time if this happens multiple times to slow down brute 662 * force attacks. 663 */ 664 hapd->ap_pin_failures++; 665 hapd->ap_pin_failures_consecutive++; 666 wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u " 667 "(%u consecutive)", 668 hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive); 669 if (hapd->ap_pin_failures < 3) 670 return 0; 671 672 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED); 673 hapd->wps->ap_setup_locked = 1; 674 675 wps_registrar_update_ie(hapd->wps->registrar); 676 677 if (!hapd->conf->ap_setup_locked && 678 hapd->ap_pin_failures_consecutive >= 10) { 679 /* 680 * In indefinite lockdown - disable automatic AP PIN 681 * reenablement. 682 */ 683 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 684 wpa_printf(MSG_DEBUG, "WPS: AP PIN disabled indefinitely"); 685 } else if (!hapd->conf->ap_setup_locked) { 686 if (hapd->ap_pin_lockout_time == 0) 687 hapd->ap_pin_lockout_time = 60; 688 else if (hapd->ap_pin_lockout_time < 365 * 24 * 60 * 60 && 689 (hapd->ap_pin_failures % 3) == 0) 690 hapd->ap_pin_lockout_time *= 2; 691 692 wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN for %u seconds", 693 hapd->ap_pin_lockout_time); 694 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 695 eloop_register_timeout(hapd->ap_pin_lockout_time, 0, 696 hostapd_wps_reenable_ap_pin, hapd, 697 NULL); 698 } 699 700 return 0; 701} 702 703 704static void hostapd_pwd_auth_fail(struct hostapd_data *hapd, 705 struct wps_event_pwd_auth_fail *data) 706{ 707 /* Update WPS Status - Authentication Failure */ 708 wpa_printf(MSG_DEBUG, "WPS: Authentication failure update"); 709 hapd->wps_stats.status = WPS_STATUS_FAILURE; 710 hapd->wps_stats.failure_reason = WPS_EI_AUTH_FAILURE; 711 os_memcpy(hapd->wps_stats.peer_addr, data->peer_macaddr, ETH_ALEN); 712 713 hostapd_wps_for_each(hapd, wps_pwd_auth_fail, data); 714} 715 716 717static int wps_ap_pin_success(struct hostapd_data *hapd, void *ctx) 718{ 719 if (hapd->conf->ap_pin == NULL || hapd->wps == NULL) 720 return 0; 721 722 if (hapd->ap_pin_failures_consecutive == 0) 723 return 0; 724 725 wpa_printf(MSG_DEBUG, "WPS: Clear consecutive AP PIN failure counter " 726 "- total validation failures %u (%u consecutive)", 727 hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive); 728 hapd->ap_pin_failures_consecutive = 0; 729 730 return 0; 731} 732 733 734static void hostapd_wps_ap_pin_success(struct hostapd_data *hapd) 735{ 736 hostapd_wps_for_each(hapd, wps_ap_pin_success, NULL); 737} 738 739 740static void hostapd_wps_event_pbc_overlap(struct hostapd_data *hapd) 741{ 742 /* Update WPS Status - PBC Overlap */ 743 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_OVERLAP; 744} 745 746 747static void hostapd_wps_event_pbc_timeout(struct hostapd_data *hapd) 748{ 749 /* Update WPS PBC Status:PBC Timeout */ 750 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_TIMEOUT; 751} 752 753 754static void hostapd_wps_event_pbc_active(struct hostapd_data *hapd) 755{ 756 /* Update WPS PBC status - Active */ 757 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_ACTIVE; 758} 759 760 761static void hostapd_wps_event_pbc_disable(struct hostapd_data *hapd) 762{ 763 /* Update WPS PBC status - Active */ 764 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE; 765} 766 767 768static void hostapd_wps_event_success(struct hostapd_data *hapd, 769 struct wps_event_success *success) 770{ 771 /* Update WPS status - Success */ 772 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE; 773 hapd->wps_stats.status = WPS_STATUS_SUCCESS; 774 os_memcpy(hapd->wps_stats.peer_addr, success->peer_macaddr, ETH_ALEN); 775} 776 777 778static void hostapd_wps_event_fail(struct hostapd_data *hapd, 779 struct wps_event_fail *fail) 780{ 781 /* Update WPS status - Failure */ 782 hapd->wps_stats.status = WPS_STATUS_FAILURE; 783 os_memcpy(hapd->wps_stats.peer_addr, fail->peer_macaddr, ETH_ALEN); 784 785 hapd->wps_stats.failure_reason = fail->error_indication; 786 787 if (fail->error_indication > 0 && 788 fail->error_indication < NUM_WPS_EI_VALUES) { 789 wpa_msg(hapd->msg_ctx, MSG_INFO, 790 WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)", 791 fail->msg, fail->config_error, fail->error_indication, 792 wps_ei_str(fail->error_indication)); 793 } else { 794 wpa_msg(hapd->msg_ctx, MSG_INFO, 795 WPS_EVENT_FAIL "msg=%d config_error=%d", 796 fail->msg, fail->config_error); 797 } 798} 799 800 801static void hostapd_wps_event_cb(void *ctx, enum wps_event event, 802 union wps_event_data *data) 803{ 804 struct hostapd_data *hapd = ctx; 805 806 switch (event) { 807 case WPS_EV_M2D: 808 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_M2D); 809 break; 810 case WPS_EV_FAIL: 811 hostapd_wps_event_fail(hapd, &data->fail); 812 break; 813 case WPS_EV_SUCCESS: 814 hostapd_wps_event_success(hapd, &data->success); 815 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_SUCCESS); 816 break; 817 case WPS_EV_PWD_AUTH_FAIL: 818 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail); 819 break; 820 case WPS_EV_PBC_OVERLAP: 821 hostapd_wps_event_pbc_overlap(hapd); 822 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_OVERLAP); 823 break; 824 case WPS_EV_PBC_TIMEOUT: 825 hostapd_wps_event_pbc_timeout(hapd); 826 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_TIMEOUT); 827 break; 828 case WPS_EV_PBC_ACTIVE: 829 hostapd_wps_event_pbc_active(hapd); 830 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ACTIVE); 831 break; 832 case WPS_EV_PBC_DISABLE: 833 hostapd_wps_event_pbc_disable(hapd); 834 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_DISABLE); 835 break; 836 case WPS_EV_ER_AP_ADD: 837 break; 838 case WPS_EV_ER_AP_REMOVE: 839 break; 840 case WPS_EV_ER_ENROLLEE_ADD: 841 break; 842 case WPS_EV_ER_ENROLLEE_REMOVE: 843 break; 844 case WPS_EV_ER_AP_SETTINGS: 845 break; 846 case WPS_EV_ER_SET_SELECTED_REGISTRAR: 847 break; 848 case WPS_EV_AP_PIN_SUCCESS: 849 hostapd_wps_ap_pin_success(hapd); 850 break; 851 } 852 if (hapd->wps_event_cb) 853 hapd->wps_event_cb(hapd->wps_event_cb_ctx, event, data); 854} 855 856 857static int hostapd_wps_rf_band_cb(void *ctx) 858{ 859 struct hostapd_data *hapd = ctx; 860 861 return hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ? 862 WPS_RF_50GHZ : 863 hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD ? 864 WPS_RF_60GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */ 865} 866 867 868static void hostapd_wps_clear_ies(struct hostapd_data *hapd, int deinit_only) 869{ 870 wpabuf_free(hapd->wps_beacon_ie); 871 hapd->wps_beacon_ie = NULL; 872 873 wpabuf_free(hapd->wps_probe_resp_ie); 874 hapd->wps_probe_resp_ie = NULL; 875 876 if (deinit_only) { 877 if (hapd->drv_priv) 878 hostapd_reset_ap_wps_ie(hapd); 879 return; 880 } 881 882 hostapd_set_ap_wps_ie(hapd); 883} 884 885 886static int get_uuid_cb(struct hostapd_iface *iface, void *ctx) 887{ 888 const u8 **uuid = ctx; 889 size_t j; 890 891 if (iface == NULL) 892 return 0; 893 for (j = 0; j < iface->num_bss; j++) { 894 struct hostapd_data *hapd = iface->bss[j]; 895 if (hapd->wps && !hapd->conf->wps_independent && 896 !is_nil_uuid(hapd->wps->uuid)) { 897 *uuid = hapd->wps->uuid; 898 return 1; 899 } 900 } 901 902 return 0; 903} 904 905 906static const u8 * get_own_uuid(struct hostapd_iface *iface) 907{ 908 const u8 *uuid; 909 if (iface->interfaces == NULL || 910 iface->interfaces->for_each_interface == NULL) 911 return NULL; 912 uuid = NULL; 913 iface->interfaces->for_each_interface(iface->interfaces, get_uuid_cb, 914 &uuid); 915 return uuid; 916} 917 918 919static int count_interface_cb(struct hostapd_iface *iface, void *ctx) 920{ 921 int *count= ctx; 922 (*count)++; 923 return 0; 924} 925 926 927static int interface_count(struct hostapd_iface *iface) 928{ 929 int count = 0; 930 if (iface->interfaces == NULL || 931 iface->interfaces->for_each_interface == NULL) 932 return 0; 933 iface->interfaces->for_each_interface(iface->interfaces, 934 count_interface_cb, &count); 935 return count; 936} 937 938 939static int hostapd_wps_set_vendor_ext(struct hostapd_data *hapd, 940 struct wps_context *wps) 941{ 942 int i; 943 944 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) { 945 wpabuf_free(wps->dev.vendor_ext[i]); 946 wps->dev.vendor_ext[i] = NULL; 947 948 if (hapd->conf->wps_vendor_ext[i] == NULL) 949 continue; 950 951 wps->dev.vendor_ext[i] = 952 wpabuf_dup(hapd->conf->wps_vendor_ext[i]); 953 if (wps->dev.vendor_ext[i] == NULL) { 954 while (--i >= 0) 955 wpabuf_free(wps->dev.vendor_ext[i]); 956 return -1; 957 } 958 } 959 960 return 0; 961} 962 963 964static void hostapd_free_wps(struct wps_context *wps) 965{ 966 int i; 967 968 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) 969 wpabuf_free(wps->dev.vendor_ext[i]); 970 wps_device_data_free(&wps->dev); 971 os_free(wps->network_key); 972 hostapd_wps_nfc_clear(wps); 973 wpabuf_free(wps->dh_pubkey); 974 wpabuf_free(wps->dh_privkey); 975 os_free(wps); 976} 977 978 979int hostapd_init_wps(struct hostapd_data *hapd, 980 struct hostapd_bss_config *conf) 981{ 982 struct wps_context *wps; 983 struct wps_registrar_config cfg; 984 985 if (conf->wps_state == 0) { 986 hostapd_wps_clear_ies(hapd, 0); 987 return 0; 988 } 989 990 wps = os_zalloc(sizeof(*wps)); 991 if (wps == NULL) 992 return -1; 993 994 wps->cred_cb = hostapd_wps_cred_cb; 995 wps->event_cb = hostapd_wps_event_cb; 996 wps->rf_band_cb = hostapd_wps_rf_band_cb; 997 wps->cb_ctx = hapd; 998 999 os_memset(&cfg, 0, sizeof(cfg)); 1000 wps->wps_state = hapd->conf->wps_state; 1001 wps->ap_setup_locked = hapd->conf->ap_setup_locked; 1002 if (is_nil_uuid(hapd->conf->uuid)) { 1003 const u8 *uuid; 1004 uuid = get_own_uuid(hapd->iface); 1005 if (uuid && !conf->wps_independent) { 1006 os_memcpy(wps->uuid, uuid, UUID_LEN); 1007 wpa_hexdump(MSG_DEBUG, "WPS: Clone UUID from another " 1008 "interface", wps->uuid, UUID_LEN); 1009 } else { 1010 uuid_gen_mac_addr(hapd->own_addr, wps->uuid); 1011 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC " 1012 "address", wps->uuid, UUID_LEN); 1013 } 1014 } else { 1015 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN); 1016 wpa_hexdump(MSG_DEBUG, "WPS: Use configured UUID", 1017 wps->uuid, UUID_LEN); 1018 } 1019 wps->ssid_len = hapd->conf->ssid.ssid_len; 1020 os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len); 1021 wps->ap = 1; 1022 os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN); 1023 wps->dev.device_name = hapd->conf->device_name ? 1024 os_strdup(hapd->conf->device_name) : NULL; 1025 wps->dev.manufacturer = hapd->conf->manufacturer ? 1026 os_strdup(hapd->conf->manufacturer) : NULL; 1027 wps->dev.model_name = hapd->conf->model_name ? 1028 os_strdup(hapd->conf->model_name) : NULL; 1029 wps->dev.model_number = hapd->conf->model_number ? 1030 os_strdup(hapd->conf->model_number) : NULL; 1031 wps->dev.serial_number = hapd->conf->serial_number ? 1032 os_strdup(hapd->conf->serial_number) : NULL; 1033 wps->config_methods = 1034 wps_config_methods_str2bin(hapd->conf->config_methods); 1035 if ((wps->config_methods & 1036 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY | 1037 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) { 1038 wpa_printf(MSG_INFO, "WPS: Converting display to " 1039 "virtual_display for WPS 2.0 compliance"); 1040 wps->config_methods |= WPS_CONFIG_VIRT_DISPLAY; 1041 } 1042 if ((wps->config_methods & 1043 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON | 1044 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) { 1045 wpa_printf(MSG_INFO, "WPS: Converting push_button to " 1046 "virtual_push_button for WPS 2.0 compliance"); 1047 wps->config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON; 1048 } 1049 os_memcpy(wps->dev.pri_dev_type, hapd->conf->device_type, 1050 WPS_DEV_TYPE_LEN); 1051 1052 if (hostapd_wps_set_vendor_ext(hapd, wps) < 0) 1053 goto fail; 1054 1055 wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version); 1056 1057 if (conf->wps_rf_bands) { 1058 wps->dev.rf_bands = conf->wps_rf_bands; 1059 } else { 1060 wps->dev.rf_bands = 1061 hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ? 1062 WPS_RF_50GHZ : 1063 hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD ? 1064 WPS_RF_60GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */ 1065 } 1066 1067 if (conf->wpa & WPA_PROTO_RSN) { 1068 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) 1069 wps->auth_types |= WPS_AUTH_WPA2PSK; 1070 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) 1071 wps->auth_types |= WPS_AUTH_WPA2; 1072 1073 if (conf->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)) { 1074 wps->encr_types |= WPS_ENCR_AES; 1075 wps->encr_types_rsn |= WPS_ENCR_AES; 1076 } 1077 if (conf->rsn_pairwise & WPA_CIPHER_TKIP) { 1078 wps->encr_types |= WPS_ENCR_TKIP; 1079 wps->encr_types_rsn |= WPS_ENCR_TKIP; 1080 } 1081 } 1082 1083 if (conf->wpa & WPA_PROTO_WPA) { 1084 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) 1085 wps->auth_types |= WPS_AUTH_WPAPSK; 1086 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) 1087 wps->auth_types |= WPS_AUTH_WPA; 1088 1089 if (conf->wpa_pairwise & WPA_CIPHER_CCMP) { 1090 wps->encr_types |= WPS_ENCR_AES; 1091 wps->encr_types_wpa |= WPS_ENCR_AES; 1092 } 1093 if (conf->wpa_pairwise & WPA_CIPHER_TKIP) { 1094 wps->encr_types |= WPS_ENCR_TKIP; 1095 wps->encr_types_wpa |= WPS_ENCR_TKIP; 1096 } 1097 } 1098 1099 if (conf->ssid.security_policy == SECURITY_PLAINTEXT) { 1100 wps->encr_types |= WPS_ENCR_NONE; 1101 wps->auth_types |= WPS_AUTH_OPEN; 1102 } 1103 1104 if (conf->ssid.wpa_psk_file) { 1105 /* Use per-device PSKs */ 1106 } else if (conf->ssid.wpa_passphrase) { 1107 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase); 1108 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase); 1109 } else if (conf->ssid.wpa_psk) { 1110 wps->network_key = os_malloc(2 * PMK_LEN + 1); 1111 if (wps->network_key == NULL) 1112 goto fail; 1113 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1, 1114 conf->ssid.wpa_psk->psk, PMK_LEN); 1115 wps->network_key_len = 2 * PMK_LEN; 1116 } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) { 1117 wps->network_key = os_malloc(conf->ssid.wep.len[0]); 1118 if (wps->network_key == NULL) 1119 goto fail; 1120 os_memcpy(wps->network_key, conf->ssid.wep.key[0], 1121 conf->ssid.wep.len[0]); 1122 wps->network_key_len = conf->ssid.wep.len[0]; 1123 } 1124 1125 if (conf->ssid.wpa_psk) { 1126 os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN); 1127 wps->psk_set = 1; 1128 } 1129 1130 wps->ap_auth_type = wps->auth_types; 1131 wps->ap_encr_type = wps->encr_types; 1132 if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) { 1133 /* Override parameters to enable security by default */ 1134 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK; 1135 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP; 1136 wps->encr_types_rsn = WPS_ENCR_AES | WPS_ENCR_TKIP; 1137 wps->encr_types_wpa = WPS_ENCR_AES | WPS_ENCR_TKIP; 1138 } 1139 1140 wps->ap_settings = conf->ap_settings; 1141 wps->ap_settings_len = conf->ap_settings_len; 1142 1143 cfg.new_psk_cb = hostapd_wps_new_psk_cb; 1144 cfg.set_ie_cb = hostapd_wps_set_ie_cb; 1145 cfg.pin_needed_cb = hostapd_wps_pin_needed_cb; 1146 cfg.reg_success_cb = hostapd_wps_reg_success_cb; 1147 cfg.enrollee_seen_cb = hostapd_wps_enrollee_seen_cb; 1148 cfg.cb_ctx = hapd; 1149 cfg.skip_cred_build = conf->skip_cred_build; 1150 cfg.extra_cred = conf->extra_cred; 1151 cfg.extra_cred_len = conf->extra_cred_len; 1152 cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) && 1153 conf->skip_cred_build; 1154 if (conf->ssid.security_policy == SECURITY_STATIC_WEP) 1155 cfg.static_wep_only = 1; 1156 cfg.dualband = interface_count(hapd->iface) > 1; 1157 if ((wps->dev.rf_bands & (WPS_RF_50GHZ | WPS_RF_24GHZ)) == 1158 (WPS_RF_50GHZ | WPS_RF_24GHZ)) 1159 cfg.dualband = 1; 1160 if (cfg.dualband) 1161 wpa_printf(MSG_DEBUG, "WPS: Dualband AP"); 1162 cfg.force_per_enrollee_psk = conf->force_per_enrollee_psk; 1163 1164 wps->registrar = wps_registrar_init(wps, &cfg); 1165 if (wps->registrar == NULL) { 1166 wpa_printf(MSG_ERROR, "Failed to initialize WPS Registrar"); 1167 goto fail; 1168 } 1169 1170#ifdef CONFIG_WPS_UPNP 1171 wps->friendly_name = hapd->conf->friendly_name; 1172 wps->manufacturer_url = hapd->conf->manufacturer_url; 1173 wps->model_description = hapd->conf->model_description; 1174 wps->model_url = hapd->conf->model_url; 1175 wps->upc = hapd->conf->upc; 1176#endif /* CONFIG_WPS_UPNP */ 1177 1178 hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd); 1179 1180 hapd->wps = wps; 1181 1182 return 0; 1183 1184fail: 1185 hostapd_free_wps(wps); 1186 return -1; 1187} 1188 1189 1190int hostapd_init_wps_complete(struct hostapd_data *hapd) 1191{ 1192 struct wps_context *wps = hapd->wps; 1193 1194 if (wps == NULL) 1195 return 0; 1196 1197#ifdef CONFIG_WPS_UPNP 1198 if (hostapd_wps_upnp_init(hapd, wps) < 0) { 1199 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP"); 1200 wps_registrar_deinit(wps->registrar); 1201 hostapd_free_wps(wps); 1202 hapd->wps = NULL; 1203 return -1; 1204 } 1205#endif /* CONFIG_WPS_UPNP */ 1206 1207 return 0; 1208} 1209 1210 1211static void hostapd_wps_nfc_clear(struct wps_context *wps) 1212{ 1213#ifdef CONFIG_WPS_NFC 1214 wpa_printf(MSG_DEBUG, "WPS: Clear NFC Tag context %p", wps); 1215 wps->ap_nfc_dev_pw_id = 0; 1216 wpabuf_free(wps->ap_nfc_dh_pubkey); 1217 wps->ap_nfc_dh_pubkey = NULL; 1218 wpabuf_free(wps->ap_nfc_dh_privkey); 1219 wps->ap_nfc_dh_privkey = NULL; 1220 wpabuf_free(wps->ap_nfc_dev_pw); 1221 wps->ap_nfc_dev_pw = NULL; 1222#endif /* CONFIG_WPS_NFC */ 1223} 1224 1225 1226void hostapd_deinit_wps(struct hostapd_data *hapd) 1227{ 1228 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 1229 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1230 eloop_cancel_timeout(wps_reload_config, hapd->iface, NULL); 1231 if (hapd->wps == NULL) { 1232 hostapd_wps_clear_ies(hapd, 1); 1233 return; 1234 } 1235#ifdef CONFIG_WPS_UPNP 1236 hostapd_wps_upnp_deinit(hapd); 1237#endif /* CONFIG_WPS_UPNP */ 1238 wps_registrar_deinit(hapd->wps->registrar); 1239 wps_free_pending_msgs(hapd->wps->upnp_msgs); 1240 hostapd_free_wps(hapd->wps); 1241 hapd->wps = NULL; 1242 hostapd_wps_clear_ies(hapd, 1); 1243} 1244 1245 1246void hostapd_update_wps(struct hostapd_data *hapd) 1247{ 1248 if (hapd->wps == NULL) 1249 return; 1250 1251#ifdef CONFIG_WPS_UPNP 1252 hapd->wps->friendly_name = hapd->conf->friendly_name; 1253 hapd->wps->manufacturer_url = hapd->conf->manufacturer_url; 1254 hapd->wps->model_description = hapd->conf->model_description; 1255 hapd->wps->model_url = hapd->conf->model_url; 1256 hapd->wps->upc = hapd->conf->upc; 1257#endif /* CONFIG_WPS_UPNP */ 1258 1259 hostapd_wps_set_vendor_ext(hapd, hapd->wps); 1260 1261 if (hapd->conf->wps_state) 1262 wps_registrar_update_ie(hapd->wps->registrar); 1263 else 1264 hostapd_deinit_wps(hapd); 1265} 1266 1267 1268struct wps_add_pin_data { 1269 const u8 *addr; 1270 const u8 *uuid; 1271 const u8 *pin; 1272 size_t pin_len; 1273 int timeout; 1274 int added; 1275}; 1276 1277 1278static int wps_add_pin(struct hostapd_data *hapd, void *ctx) 1279{ 1280 struct wps_add_pin_data *data = ctx; 1281 int ret; 1282 1283 if (hapd->wps == NULL) 1284 return 0; 1285 ret = wps_registrar_add_pin(hapd->wps->registrar, data->addr, 1286 data->uuid, data->pin, data->pin_len, 1287 data->timeout); 1288 if (ret == 0) 1289 data->added++; 1290 return ret; 1291} 1292 1293 1294int hostapd_wps_add_pin(struct hostapd_data *hapd, const u8 *addr, 1295 const char *uuid, const char *pin, int timeout) 1296{ 1297 u8 u[UUID_LEN]; 1298 struct wps_add_pin_data data; 1299 1300 data.addr = addr; 1301 data.uuid = u; 1302 data.pin = (const u8 *) pin; 1303 data.pin_len = os_strlen(pin); 1304 data.timeout = timeout; 1305 data.added = 0; 1306 1307 if (os_strcmp(uuid, "any") == 0) 1308 data.uuid = NULL; 1309 else { 1310 if (uuid_str2bin(uuid, u)) 1311 return -1; 1312 data.uuid = u; 1313 } 1314 if (hostapd_wps_for_each(hapd, wps_add_pin, &data) < 0) 1315 return -1; 1316 return data.added ? 0 : -1; 1317} 1318 1319 1320struct wps_button_pushed_ctx { 1321 const u8 *p2p_dev_addr; 1322 unsigned int count; 1323}; 1324 1325static int wps_button_pushed(struct hostapd_data *hapd, void *ctx) 1326{ 1327 struct wps_button_pushed_ctx *data = ctx; 1328 1329 if (hapd->wps) { 1330 data->count++; 1331 return wps_registrar_button_pushed(hapd->wps->registrar, 1332 data->p2p_dev_addr); 1333 } 1334 1335 return 0; 1336} 1337 1338 1339int hostapd_wps_button_pushed(struct hostapd_data *hapd, 1340 const u8 *p2p_dev_addr) 1341{ 1342 struct wps_button_pushed_ctx ctx; 1343 int ret; 1344 1345 os_memset(&ctx, 0, sizeof(ctx)); 1346 ctx.p2p_dev_addr = p2p_dev_addr; 1347 ret = hostapd_wps_for_each(hapd, wps_button_pushed, &ctx); 1348 if (ret == 0 && !ctx.count) 1349 ret = -1; 1350 return ret; 1351} 1352 1353 1354struct wps_cancel_ctx { 1355 unsigned int count; 1356}; 1357 1358static int wps_cancel(struct hostapd_data *hapd, void *ctx) 1359{ 1360 struct wps_cancel_ctx *data = ctx; 1361 1362 if (hapd->wps) { 1363 data->count++; 1364 wps_registrar_wps_cancel(hapd->wps->registrar); 1365 ap_for_each_sta(hapd, ap_sta_wps_cancel, NULL); 1366 } 1367 1368 return 0; 1369} 1370 1371 1372int hostapd_wps_cancel(struct hostapd_data *hapd) 1373{ 1374 struct wps_cancel_ctx ctx; 1375 int ret; 1376 1377 os_memset(&ctx, 0, sizeof(ctx)); 1378 ret = hostapd_wps_for_each(hapd, wps_cancel, &ctx); 1379 if (ret == 0 && !ctx.count) 1380 ret = -1; 1381 return ret; 1382} 1383 1384 1385static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da, 1386 const u8 *bssid, 1387 const u8 *ie, size_t ie_len, 1388 int ssi_signal) 1389{ 1390 struct hostapd_data *hapd = ctx; 1391 struct wpabuf *wps_ie; 1392 struct ieee802_11_elems elems; 1393 1394 if (hapd->wps == NULL) 1395 return 0; 1396 1397 if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) { 1398 wpa_printf(MSG_DEBUG, "WPS: Could not parse ProbeReq from " 1399 MACSTR, MAC2STR(addr)); 1400 return 0; 1401 } 1402 1403 if (elems.ssid && elems.ssid_len > 0 && 1404 (elems.ssid_len != hapd->conf->ssid.ssid_len || 1405 os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) != 1406 0)) 1407 return 0; /* Not for us */ 1408 1409 wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA); 1410 if (wps_ie == NULL) 1411 return 0; 1412 if (wps_validate_probe_req(wps_ie, addr) < 0) { 1413 wpabuf_free(wps_ie); 1414 return 0; 1415 } 1416 1417 if (wpabuf_len(wps_ie) > 0) { 1418 int p2p_wildcard = 0; 1419#ifdef CONFIG_P2P 1420 if (elems.ssid && elems.ssid_len == P2P_WILDCARD_SSID_LEN && 1421 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, 1422 P2P_WILDCARD_SSID_LEN) == 0) 1423 p2p_wildcard = 1; 1424#endif /* CONFIG_P2P */ 1425 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie, 1426 p2p_wildcard); 1427#ifdef CONFIG_WPS_UPNP 1428 /* FIX: what exactly should be included in the WLANEvent? 1429 * WPS attributes? Full ProbeReq frame? */ 1430 if (!p2p_wildcard) 1431 upnp_wps_device_send_wlan_event( 1432 hapd->wps_upnp, addr, 1433 UPNP_WPS_WLANEVENT_TYPE_PROBE, wps_ie); 1434#endif /* CONFIG_WPS_UPNP */ 1435 } 1436 1437 wpabuf_free(wps_ie); 1438 1439 return 0; 1440} 1441 1442 1443#ifdef CONFIG_WPS_UPNP 1444 1445static int hostapd_rx_req_put_wlan_response( 1446 void *priv, enum upnp_wps_wlanevent_type ev_type, 1447 const u8 *mac_addr, const struct wpabuf *msg, 1448 enum wps_msg_type msg_type) 1449{ 1450 struct hostapd_data *hapd = priv; 1451 struct sta_info *sta; 1452 struct upnp_pending_message *p; 1453 1454 wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr=" 1455 MACSTR, ev_type, MAC2STR(mac_addr)); 1456 wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage", 1457 wpabuf_head(msg), wpabuf_len(msg)); 1458 if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) { 1459 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected " 1460 "PutWLANResponse WLANEventType %d", ev_type); 1461 return -1; 1462 } 1463 1464 /* 1465 * EAP response to ongoing to WPS Registration. Send it to EAP-WSC 1466 * server implementation for delivery to the peer. 1467 */ 1468 1469 sta = ap_get_sta(hapd, mac_addr); 1470#ifndef CONFIG_WPS_STRICT 1471 if (!sta) { 1472 /* 1473 * Workaround - Intel wsccmd uses bogus NewWLANEventMAC: 1474 * Pick STA that is in an ongoing WPS registration without 1475 * checking the MAC address. 1476 */ 1477 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based " 1478 "on NewWLANEventMAC; try wildcard match"); 1479 for (sta = hapd->sta_list; sta; sta = sta->next) { 1480 if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS)) 1481 break; 1482 } 1483 } 1484#endif /* CONFIG_WPS_STRICT */ 1485 1486 if (!sta || !(sta->flags & WLAN_STA_WPS)) { 1487 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found"); 1488 return 0; 1489 } 1490 1491 if (!sta->eapol_sm) { 1492 /* 1493 * This can happen, e.g., if an ER sends an extra message after 1494 * the station has disassociated (but not fully 1495 * deauthenticated). 1496 */ 1497 wpa_printf(MSG_DEBUG, "WPS UPnP: Matching STA did not have EAPOL state machine initialized"); 1498 return 0; 1499 } 1500 1501 p = os_zalloc(sizeof(*p)); 1502 if (p == NULL) 1503 return -1; 1504 os_memcpy(p->addr, sta->addr, ETH_ALEN); 1505 p->msg = wpabuf_dup(msg); 1506 p->type = msg_type; 1507 p->next = hapd->wps->upnp_msgs; 1508 hapd->wps->upnp_msgs = p; 1509 1510 return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap); 1511} 1512 1513 1514static int hostapd_wps_upnp_init(struct hostapd_data *hapd, 1515 struct wps_context *wps) 1516{ 1517 struct upnp_wps_device_ctx *ctx; 1518 1519 if (!hapd->conf->upnp_iface) 1520 return 0; 1521 ctx = os_zalloc(sizeof(*ctx)); 1522 if (ctx == NULL) 1523 return -1; 1524 1525 ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response; 1526 if (hapd->conf->ap_pin) 1527 ctx->ap_pin = os_strdup(hapd->conf->ap_pin); 1528 1529 hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd, 1530 hapd->conf->upnp_iface); 1531 if (hapd->wps_upnp == NULL) 1532 return -1; 1533 wps->wps_upnp = hapd->wps_upnp; 1534 1535 return 0; 1536} 1537 1538 1539static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd) 1540{ 1541 upnp_wps_device_deinit(hapd->wps_upnp, hapd); 1542} 1543 1544#endif /* CONFIG_WPS_UPNP */ 1545 1546 1547int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr, 1548 char *buf, size_t buflen) 1549{ 1550 if (hapd->wps == NULL) 1551 return 0; 1552 return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen); 1553} 1554 1555 1556static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx) 1557{ 1558 struct hostapd_data *hapd = eloop_data; 1559 wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out"); 1560 hostapd_wps_ap_pin_disable(hapd); 1561 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_PIN_DISABLED); 1562} 1563 1564 1565static void hostapd_wps_ap_pin_enable(struct hostapd_data *hapd, int timeout) 1566{ 1567 wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout); 1568 hapd->ap_pin_failures = 0; 1569 hapd->ap_pin_failures_consecutive = 0; 1570 hapd->conf->ap_setup_locked = 0; 1571 if (hapd->wps->ap_setup_locked) { 1572 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED); 1573 hapd->wps->ap_setup_locked = 0; 1574 wps_registrar_update_ie(hapd->wps->registrar); 1575 } 1576 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1577 if (timeout > 0) 1578 eloop_register_timeout(timeout, 0, 1579 hostapd_wps_ap_pin_timeout, hapd, NULL); 1580} 1581 1582 1583static int wps_ap_pin_disable(struct hostapd_data *hapd, void *ctx) 1584{ 1585 os_free(hapd->conf->ap_pin); 1586 hapd->conf->ap_pin = NULL; 1587#ifdef CONFIG_WPS_UPNP 1588 upnp_wps_set_ap_pin(hapd->wps_upnp, NULL); 1589#endif /* CONFIG_WPS_UPNP */ 1590 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1591 return 0; 1592} 1593 1594 1595void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd) 1596{ 1597 wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN"); 1598 hostapd_wps_for_each(hapd, wps_ap_pin_disable, NULL); 1599} 1600 1601 1602struct wps_ap_pin_data { 1603 char pin_txt[9]; 1604 int timeout; 1605}; 1606 1607 1608static int wps_ap_pin_set(struct hostapd_data *hapd, void *ctx) 1609{ 1610 struct wps_ap_pin_data *data = ctx; 1611 1612 if (!hapd->wps) 1613 return 0; 1614 1615 os_free(hapd->conf->ap_pin); 1616 hapd->conf->ap_pin = os_strdup(data->pin_txt); 1617#ifdef CONFIG_WPS_UPNP 1618 upnp_wps_set_ap_pin(hapd->wps_upnp, data->pin_txt); 1619#endif /* CONFIG_WPS_UPNP */ 1620 hostapd_wps_ap_pin_enable(hapd, data->timeout); 1621 return 0; 1622} 1623 1624 1625const char * hostapd_wps_ap_pin_random(struct hostapd_data *hapd, int timeout) 1626{ 1627 unsigned int pin; 1628 struct wps_ap_pin_data data; 1629 1630 if (wps_generate_pin(&pin) < 0) 1631 return NULL; 1632 os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%08u", pin); 1633 data.timeout = timeout; 1634 hostapd_wps_for_each(hapd, wps_ap_pin_set, &data); 1635 return hapd->conf->ap_pin; 1636} 1637 1638 1639const char * hostapd_wps_ap_pin_get(struct hostapd_data *hapd) 1640{ 1641 return hapd->conf->ap_pin; 1642} 1643 1644 1645int hostapd_wps_ap_pin_set(struct hostapd_data *hapd, const char *pin, 1646 int timeout) 1647{ 1648 struct wps_ap_pin_data data; 1649 int ret; 1650 1651 ret = os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%s", pin); 1652 if (os_snprintf_error(sizeof(data.pin_txt), ret)) 1653 return -1; 1654 data.timeout = timeout; 1655 return hostapd_wps_for_each(hapd, wps_ap_pin_set, &data); 1656} 1657 1658 1659static int wps_update_ie(struct hostapd_data *hapd, void *ctx) 1660{ 1661 if (hapd->wps) 1662 wps_registrar_update_ie(hapd->wps->registrar); 1663 return 0; 1664} 1665 1666 1667void hostapd_wps_update_ie(struct hostapd_data *hapd) 1668{ 1669 hostapd_wps_for_each(hapd, wps_update_ie, NULL); 1670} 1671 1672 1673int hostapd_wps_config_ap(struct hostapd_data *hapd, const char *ssid, 1674 const char *auth, const char *encr, const char *key) 1675{ 1676 struct wps_credential cred; 1677 size_t len; 1678 1679 os_memset(&cred, 0, sizeof(cred)); 1680 1681 len = os_strlen(ssid); 1682 if ((len & 1) || len > 2 * sizeof(cred.ssid) || 1683 hexstr2bin(ssid, cred.ssid, len / 2)) 1684 return -1; 1685 cred.ssid_len = len / 2; 1686 1687 if (os_strncmp(auth, "OPEN", 4) == 0) 1688 cred.auth_type = WPS_AUTH_OPEN; 1689 else if (os_strncmp(auth, "WPAPSK", 6) == 0) 1690 cred.auth_type = WPS_AUTH_WPAPSK; 1691 else if (os_strncmp(auth, "WPA2PSK", 7) == 0) 1692 cred.auth_type = WPS_AUTH_WPA2PSK; 1693 else 1694 return -1; 1695 1696 if (encr) { 1697 if (os_strncmp(encr, "NONE", 4) == 0) 1698 cred.encr_type = WPS_ENCR_NONE; 1699 else if (os_strncmp(encr, "TKIP", 4) == 0) 1700 cred.encr_type = WPS_ENCR_TKIP; 1701 else if (os_strncmp(encr, "CCMP", 4) == 0) 1702 cred.encr_type = WPS_ENCR_AES; 1703 else 1704 return -1; 1705 } else 1706 cred.encr_type = WPS_ENCR_NONE; 1707 1708 if (key) { 1709 len = os_strlen(key); 1710 if ((len & 1) || len > 2 * sizeof(cred.key) || 1711 hexstr2bin(key, cred.key, len / 2)) 1712 return -1; 1713 cred.key_len = len / 2; 1714 } 1715 1716 return wps_registrar_config_ap(hapd->wps->registrar, &cred); 1717} 1718 1719 1720#ifdef CONFIG_WPS_NFC 1721 1722struct wps_nfc_password_token_data { 1723 const u8 *oob_dev_pw; 1724 size_t oob_dev_pw_len; 1725 int added; 1726}; 1727 1728 1729static int wps_add_nfc_password_token(struct hostapd_data *hapd, void *ctx) 1730{ 1731 struct wps_nfc_password_token_data *data = ctx; 1732 int ret; 1733 1734 if (hapd->wps == NULL) 1735 return 0; 1736 ret = wps_registrar_add_nfc_password_token(hapd->wps->registrar, 1737 data->oob_dev_pw, 1738 data->oob_dev_pw_len); 1739 if (ret == 0) 1740 data->added++; 1741 return ret; 1742} 1743 1744 1745static int hostapd_wps_add_nfc_password_token(struct hostapd_data *hapd, 1746 struct wps_parse_attr *attr) 1747{ 1748 struct wps_nfc_password_token_data data; 1749 1750 data.oob_dev_pw = attr->oob_dev_password; 1751 data.oob_dev_pw_len = attr->oob_dev_password_len; 1752 data.added = 0; 1753 if (hostapd_wps_for_each(hapd, wps_add_nfc_password_token, &data) < 0) 1754 return -1; 1755 return data.added ? 0 : -1; 1756} 1757 1758 1759static int hostapd_wps_nfc_tag_process(struct hostapd_data *hapd, 1760 const struct wpabuf *wps) 1761{ 1762 struct wps_parse_attr attr; 1763 1764 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps); 1765 1766 if (wps_parse_msg(wps, &attr)) { 1767 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag"); 1768 return -1; 1769 } 1770 1771 if (attr.oob_dev_password) 1772 return hostapd_wps_add_nfc_password_token(hapd, &attr); 1773 1774 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag"); 1775 return -1; 1776} 1777 1778 1779int hostapd_wps_nfc_tag_read(struct hostapd_data *hapd, 1780 const struct wpabuf *data) 1781{ 1782 const struct wpabuf *wps = data; 1783 struct wpabuf *tmp = NULL; 1784 int ret; 1785 1786 if (wpabuf_len(data) < 4) 1787 return -1; 1788 1789 if (*wpabuf_head_u8(data) != 0x10) { 1790 /* Assume this contains full NDEF record */ 1791 tmp = ndef_parse_wifi(data); 1792 if (tmp == NULL) { 1793 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF"); 1794 return -1; 1795 } 1796 wps = tmp; 1797 } 1798 1799 ret = hostapd_wps_nfc_tag_process(hapd, wps); 1800 wpabuf_free(tmp); 1801 return ret; 1802} 1803 1804 1805struct wpabuf * hostapd_wps_nfc_config_token(struct hostapd_data *hapd, 1806 int ndef) 1807{ 1808 struct wpabuf *ret; 1809 1810 if (hapd->wps == NULL) 1811 return NULL; 1812 1813 ret = wps_get_oob_cred(hapd->wps, hostapd_wps_rf_band_cb(hapd), 1814 hapd->iconf->channel); 1815 if (ndef && ret) { 1816 struct wpabuf *tmp; 1817 tmp = ndef_build_wifi(ret); 1818 wpabuf_free(ret); 1819 if (tmp == NULL) 1820 return NULL; 1821 ret = tmp; 1822 } 1823 1824 return ret; 1825} 1826 1827 1828struct wpabuf * hostapd_wps_nfc_hs_cr(struct hostapd_data *hapd, int ndef) 1829{ 1830 struct wpabuf *ret; 1831 1832 if (hapd->wps == NULL) 1833 return NULL; 1834 1835 if (hapd->conf->wps_nfc_dh_pubkey == NULL) { 1836 struct wps_context *wps = hapd->wps; 1837 if (wps_nfc_gen_dh(&hapd->conf->wps_nfc_dh_pubkey, 1838 &hapd->conf->wps_nfc_dh_privkey) < 0) 1839 return NULL; 1840 hostapd_wps_nfc_clear(wps); 1841 wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER; 1842 wps->ap_nfc_dh_pubkey = 1843 wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey); 1844 wps->ap_nfc_dh_privkey = 1845 wpabuf_dup(hapd->conf->wps_nfc_dh_privkey); 1846 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) { 1847 hostapd_wps_nfc_clear(wps); 1848 return NULL; 1849 } 1850 } 1851 1852 ret = wps_build_nfc_handover_sel(hapd->wps, 1853 hapd->conf->wps_nfc_dh_pubkey, 1854 hapd->own_addr, hapd->iface->freq); 1855 1856 if (ndef && ret) { 1857 struct wpabuf *tmp; 1858 tmp = ndef_build_wifi(ret); 1859 wpabuf_free(ret); 1860 if (tmp == NULL) 1861 return NULL; 1862 ret = tmp; 1863 } 1864 1865 return ret; 1866} 1867 1868 1869int hostapd_wps_nfc_report_handover(struct hostapd_data *hapd, 1870 const struct wpabuf *req, 1871 const struct wpabuf *sel) 1872{ 1873 struct wpabuf *wps; 1874 int ret = -1; 1875 u16 wsc_len; 1876 const u8 *pos; 1877 struct wpabuf msg; 1878 struct wps_parse_attr attr; 1879 u16 dev_pw_id; 1880 1881 /* 1882 * Enrollee/station is always initiator of the NFC connection handover, 1883 * so use the request message here to find Enrollee public key hash. 1884 */ 1885 wps = ndef_parse_wifi(req); 1886 if (wps == NULL) 1887 return -1; 1888 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc " 1889 "payload from NFC connection handover"); 1890 wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps); 1891 if (wpabuf_len(wps) < 2) { 1892 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request " 1893 "Message"); 1894 goto out; 1895 } 1896 pos = wpabuf_head(wps); 1897 wsc_len = WPA_GET_BE16(pos); 1898 if (wsc_len > wpabuf_len(wps) - 2) { 1899 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) " 1900 "in rt Wi-Fi Handover Request Message", wsc_len); 1901 goto out; 1902 } 1903 pos += 2; 1904 1905 wpa_hexdump(MSG_DEBUG, 1906 "WPS: WSC attributes in Wi-Fi Handover Request Message", 1907 pos, wsc_len); 1908 if (wsc_len < wpabuf_len(wps) - 2) { 1909 wpa_hexdump(MSG_DEBUG, 1910 "WPS: Ignore extra data after WSC attributes", 1911 pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len); 1912 } 1913 1914 wpabuf_set(&msg, pos, wsc_len); 1915 ret = wps_parse_msg(&msg, &attr); 1916 if (ret < 0) { 1917 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in " 1918 "Wi-Fi Handover Request Message"); 1919 goto out; 1920 } 1921 1922 if (attr.oob_dev_password == NULL || 1923 attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) { 1924 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password " 1925 "included in Wi-Fi Handover Request Message"); 1926 ret = -1; 1927 goto out; 1928 } 1929 1930 if (attr.uuid_e == NULL) { 1931 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi " 1932 "Handover Request Message"); 1933 ret = -1; 1934 goto out; 1935 } 1936 1937 wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN); 1938 1939 wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password", 1940 attr.oob_dev_password, attr.oob_dev_password_len); 1941 dev_pw_id = WPA_GET_BE16(attr.oob_dev_password + 1942 WPS_OOB_PUBKEY_HASH_LEN); 1943 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) { 1944 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID " 1945 "%u in Wi-Fi Handover Request Message", dev_pw_id); 1946 ret = -1; 1947 goto out; 1948 } 1949 wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash", 1950 attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN); 1951 1952 ret = wps_registrar_add_nfc_pw_token(hapd->wps->registrar, 1953 attr.oob_dev_password, 1954 DEV_PW_NFC_CONNECTION_HANDOVER, 1955 NULL, 0, 1); 1956 1957out: 1958 wpabuf_free(wps); 1959 return ret; 1960} 1961 1962 1963struct wpabuf * hostapd_wps_nfc_token_gen(struct hostapd_data *hapd, int ndef) 1964{ 1965 if (hapd->conf->wps_nfc_pw_from_config) { 1966 return wps_nfc_token_build(ndef, 1967 hapd->conf->wps_nfc_dev_pw_id, 1968 hapd->conf->wps_nfc_dh_pubkey, 1969 hapd->conf->wps_nfc_dev_pw); 1970 } 1971 1972 return wps_nfc_token_gen(ndef, &hapd->conf->wps_nfc_dev_pw_id, 1973 &hapd->conf->wps_nfc_dh_pubkey, 1974 &hapd->conf->wps_nfc_dh_privkey, 1975 &hapd->conf->wps_nfc_dev_pw); 1976} 1977 1978 1979int hostapd_wps_nfc_token_enable(struct hostapd_data *hapd) 1980{ 1981 struct wps_context *wps = hapd->wps; 1982 struct wpabuf *pw; 1983 1984 if (wps == NULL) 1985 return -1; 1986 1987 if (!hapd->conf->wps_nfc_dh_pubkey || 1988 !hapd->conf->wps_nfc_dh_privkey || 1989 !hapd->conf->wps_nfc_dev_pw || 1990 !hapd->conf->wps_nfc_dev_pw_id) 1991 return -1; 1992 1993 hostapd_wps_nfc_clear(wps); 1994 wpa_printf(MSG_DEBUG, 1995 "WPS: Enable NFC Tag (Dev Pw Id %u) for AP interface %s (context %p)", 1996 hapd->conf->wps_nfc_dev_pw_id, hapd->conf->iface, wps); 1997 wps->ap_nfc_dev_pw_id = hapd->conf->wps_nfc_dev_pw_id; 1998 wps->ap_nfc_dh_pubkey = wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey); 1999 wps->ap_nfc_dh_privkey = wpabuf_dup(hapd->conf->wps_nfc_dh_privkey); 2000 pw = hapd->conf->wps_nfc_dev_pw; 2001 wps->ap_nfc_dev_pw = wpabuf_alloc( 2002 wpabuf_len(pw) * 2 + 1); 2003 if (wps->ap_nfc_dev_pw) { 2004 wpa_snprintf_hex_uppercase( 2005 (char *) wpabuf_put(wps->ap_nfc_dev_pw, 2006 wpabuf_len(pw) * 2), 2007 wpabuf_len(pw) * 2 + 1, 2008 wpabuf_head(pw), wpabuf_len(pw)); 2009 } 2010 2011 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey || 2012 !wps->ap_nfc_dev_pw) { 2013 hostapd_wps_nfc_clear(wps); 2014 return -1; 2015 } 2016 2017 return 0; 2018} 2019 2020 2021void hostapd_wps_nfc_token_disable(struct hostapd_data *hapd) 2022{ 2023 wpa_printf(MSG_DEBUG, "WPS: Disable NFC token for AP interface %s", 2024 hapd->conf->iface); 2025 hostapd_wps_nfc_clear(hapd->wps); 2026} 2027 2028#endif /* CONFIG_WPS_NFC */ 2029