wps_hostapd.c revision 9d9e60286e05ae45025b672636490bd12586138d
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" 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 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 397static 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 614static 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 621static 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 637static 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 689static 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 702static 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 719static 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 725static 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 732static 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 739static 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 746static 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 753static 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 763static 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 786static 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 842static 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 851static 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 hostapd_reset_ap_wps_ie(hapd); 861 return; 862 } 863 864 hostapd_set_ap_wps_ie(hapd); 865} 866 867 868static int get_uuid_cb(struct hostapd_iface *iface, void *ctx) 869{ 870 const u8 **uuid = ctx; 871 size_t j; 872 873 if (iface == NULL) 874 return 0; 875 for (j = 0; j < iface->num_bss; j++) { 876 struct hostapd_data *hapd = iface->bss[j]; 877 if (hapd->wps && !hapd->conf->wps_independent && 878 !is_nil_uuid(hapd->wps->uuid)) { 879 *uuid = hapd->wps->uuid; 880 return 1; 881 } 882 } 883 884 return 0; 885} 886 887 888static const u8 * get_own_uuid(struct hostapd_iface *iface) 889{ 890 const u8 *uuid; 891 if (iface->interfaces == NULL || 892 iface->interfaces->for_each_interface == NULL) 893 return NULL; 894 uuid = NULL; 895 iface->interfaces->for_each_interface(iface->interfaces, get_uuid_cb, 896 &uuid); 897 return uuid; 898} 899 900 901static int count_interface_cb(struct hostapd_iface *iface, void *ctx) 902{ 903 int *count= ctx; 904 (*count)++; 905 return 0; 906} 907 908 909static int interface_count(struct hostapd_iface *iface) 910{ 911 int count = 0; 912 if (iface->interfaces == NULL || 913 iface->interfaces->for_each_interface == NULL) 914 return 0; 915 iface->interfaces->for_each_interface(iface->interfaces, 916 count_interface_cb, &count); 917 return count; 918} 919 920 921static int hostapd_wps_set_vendor_ext(struct hostapd_data *hapd, 922 struct wps_context *wps) 923{ 924 int i; 925 926 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) { 927 wpabuf_free(wps->dev.vendor_ext[i]); 928 wps->dev.vendor_ext[i] = NULL; 929 930 if (hapd->conf->wps_vendor_ext[i] == NULL) 931 continue; 932 933 wps->dev.vendor_ext[i] = 934 wpabuf_dup(hapd->conf->wps_vendor_ext[i]); 935 if (wps->dev.vendor_ext[i] == NULL) { 936 while (--i >= 0) 937 wpabuf_free(wps->dev.vendor_ext[i]); 938 return -1; 939 } 940 } 941 942 return 0; 943} 944 945 946static void hostapd_free_wps(struct wps_context *wps) 947{ 948 int i; 949 950 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) 951 wpabuf_free(wps->dev.vendor_ext[i]); 952 wps_device_data_free(&wps->dev); 953 os_free(wps->network_key); 954 hostapd_wps_nfc_clear(wps); 955 wpabuf_free(wps->dh_pubkey); 956 wpabuf_free(wps->dh_privkey); 957 os_free(wps); 958} 959 960 961int hostapd_init_wps(struct hostapd_data *hapd, 962 struct hostapd_bss_config *conf) 963{ 964 struct wps_context *wps; 965 struct wps_registrar_config cfg; 966 967 if (conf->wps_state == 0) { 968 hostapd_wps_clear_ies(hapd, 0); 969 return 0; 970 } 971 972 wps = os_zalloc(sizeof(*wps)); 973 if (wps == NULL) 974 return -1; 975 976 wps->cred_cb = hostapd_wps_cred_cb; 977 wps->event_cb = hostapd_wps_event_cb; 978 wps->rf_band_cb = hostapd_wps_rf_band_cb; 979 wps->cb_ctx = hapd; 980 981 os_memset(&cfg, 0, sizeof(cfg)); 982 wps->wps_state = hapd->conf->wps_state; 983 wps->ap_setup_locked = hapd->conf->ap_setup_locked; 984 if (is_nil_uuid(hapd->conf->uuid)) { 985 const u8 *uuid; 986 uuid = get_own_uuid(hapd->iface); 987 if (uuid && !conf->wps_independent) { 988 os_memcpy(wps->uuid, uuid, UUID_LEN); 989 wpa_hexdump(MSG_DEBUG, "WPS: Clone UUID from another " 990 "interface", wps->uuid, UUID_LEN); 991 } else { 992 uuid_gen_mac_addr(hapd->own_addr, wps->uuid); 993 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC " 994 "address", wps->uuid, UUID_LEN); 995 } 996 } else { 997 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN); 998 wpa_hexdump(MSG_DEBUG, "WPS: Use configured UUID", 999 wps->uuid, UUID_LEN); 1000 } 1001 wps->ssid_len = hapd->conf->ssid.ssid_len; 1002 os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len); 1003 wps->ap = 1; 1004 os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN); 1005 wps->dev.device_name = hapd->conf->device_name ? 1006 os_strdup(hapd->conf->device_name) : NULL; 1007 wps->dev.manufacturer = hapd->conf->manufacturer ? 1008 os_strdup(hapd->conf->manufacturer) : NULL; 1009 wps->dev.model_name = hapd->conf->model_name ? 1010 os_strdup(hapd->conf->model_name) : NULL; 1011 wps->dev.model_number = hapd->conf->model_number ? 1012 os_strdup(hapd->conf->model_number) : NULL; 1013 wps->dev.serial_number = hapd->conf->serial_number ? 1014 os_strdup(hapd->conf->serial_number) : NULL; 1015 wps->config_methods = 1016 wps_config_methods_str2bin(hapd->conf->config_methods); 1017 if ((wps->config_methods & 1018 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY | 1019 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) { 1020 wpa_printf(MSG_INFO, "WPS: Converting display to " 1021 "virtual_display for WPS 2.0 compliance"); 1022 wps->config_methods |= WPS_CONFIG_VIRT_DISPLAY; 1023 } 1024 if ((wps->config_methods & 1025 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON | 1026 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) { 1027 wpa_printf(MSG_INFO, "WPS: Converting push_button to " 1028 "virtual_push_button for WPS 2.0 compliance"); 1029 wps->config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON; 1030 } 1031 os_memcpy(wps->dev.pri_dev_type, hapd->conf->device_type, 1032 WPS_DEV_TYPE_LEN); 1033 1034 if (hostapd_wps_set_vendor_ext(hapd, wps) < 0) 1035 goto fail; 1036 1037 wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version); 1038 1039 if (conf->wps_rf_bands) { 1040 wps->dev.rf_bands = conf->wps_rf_bands; 1041 } else { 1042 wps->dev.rf_bands = 1043 hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ? 1044 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */ 1045 } 1046 1047 if (conf->wpa & WPA_PROTO_RSN) { 1048 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) 1049 wps->auth_types |= WPS_AUTH_WPA2PSK; 1050 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) 1051 wps->auth_types |= WPS_AUTH_WPA2; 1052 1053 if (conf->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)) 1054 wps->encr_types |= WPS_ENCR_AES; 1055 if (conf->rsn_pairwise & WPA_CIPHER_TKIP) 1056 wps->encr_types |= WPS_ENCR_TKIP; 1057 } 1058 1059 if (conf->wpa & WPA_PROTO_WPA) { 1060 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) 1061 wps->auth_types |= WPS_AUTH_WPAPSK; 1062 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) 1063 wps->auth_types |= WPS_AUTH_WPA; 1064 1065 if (conf->wpa_pairwise & WPA_CIPHER_CCMP) 1066 wps->encr_types |= WPS_ENCR_AES; 1067 if (conf->wpa_pairwise & WPA_CIPHER_TKIP) 1068 wps->encr_types |= WPS_ENCR_TKIP; 1069 } 1070 1071 if (conf->ssid.security_policy == SECURITY_PLAINTEXT) { 1072 wps->encr_types |= WPS_ENCR_NONE; 1073 wps->auth_types |= WPS_AUTH_OPEN; 1074 } 1075 1076 if (conf->ssid.wpa_psk_file) { 1077 /* Use per-device PSKs */ 1078 } else if (conf->ssid.wpa_passphrase) { 1079 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase); 1080 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase); 1081 } else if (conf->ssid.wpa_psk) { 1082 wps->network_key = os_malloc(2 * PMK_LEN + 1); 1083 if (wps->network_key == NULL) 1084 goto fail; 1085 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1, 1086 conf->ssid.wpa_psk->psk, PMK_LEN); 1087 wps->network_key_len = 2 * PMK_LEN; 1088 } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) { 1089 wps->network_key = os_malloc(conf->ssid.wep.len[0]); 1090 if (wps->network_key == NULL) 1091 goto fail; 1092 os_memcpy(wps->network_key, conf->ssid.wep.key[0], 1093 conf->ssid.wep.len[0]); 1094 wps->network_key_len = conf->ssid.wep.len[0]; 1095 } 1096 1097 if (conf->ssid.wpa_psk) { 1098 os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN); 1099 wps->psk_set = 1; 1100 } 1101 1102 wps->ap_auth_type = wps->auth_types; 1103 wps->ap_encr_type = wps->encr_types; 1104 if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) { 1105 /* Override parameters to enable security by default */ 1106 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK; 1107 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP; 1108 } 1109 1110 wps->ap_settings = conf->ap_settings; 1111 wps->ap_settings_len = conf->ap_settings_len; 1112 1113 cfg.new_psk_cb = hostapd_wps_new_psk_cb; 1114 cfg.set_ie_cb = hostapd_wps_set_ie_cb; 1115 cfg.pin_needed_cb = hostapd_wps_pin_needed_cb; 1116 cfg.reg_success_cb = hostapd_wps_reg_success_cb; 1117 cfg.enrollee_seen_cb = hostapd_wps_enrollee_seen_cb; 1118 cfg.cb_ctx = hapd; 1119 cfg.skip_cred_build = conf->skip_cred_build; 1120 cfg.extra_cred = conf->extra_cred; 1121 cfg.extra_cred_len = conf->extra_cred_len; 1122 cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) && 1123 conf->skip_cred_build; 1124 if (conf->ssid.security_policy == SECURITY_STATIC_WEP) 1125 cfg.static_wep_only = 1; 1126 cfg.dualband = interface_count(hapd->iface) > 1; 1127 if ((wps->dev.rf_bands & (WPS_RF_50GHZ | WPS_RF_24GHZ)) == 1128 (WPS_RF_50GHZ | WPS_RF_24GHZ)) 1129 cfg.dualband = 1; 1130 if (cfg.dualband) 1131 wpa_printf(MSG_DEBUG, "WPS: Dualband AP"); 1132 cfg.force_per_enrollee_psk = conf->force_per_enrollee_psk; 1133 1134 wps->registrar = wps_registrar_init(wps, &cfg); 1135 if (wps->registrar == NULL) { 1136 wpa_printf(MSG_ERROR, "Failed to initialize WPS Registrar"); 1137 goto fail; 1138 } 1139 1140#ifdef CONFIG_WPS_UPNP 1141 wps->friendly_name = hapd->conf->friendly_name; 1142 wps->manufacturer_url = hapd->conf->manufacturer_url; 1143 wps->model_description = hapd->conf->model_description; 1144 wps->model_url = hapd->conf->model_url; 1145 wps->upc = hapd->conf->upc; 1146#endif /* CONFIG_WPS_UPNP */ 1147 1148 hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd); 1149 1150 hapd->wps = wps; 1151 1152 return 0; 1153 1154fail: 1155 hostapd_free_wps(wps); 1156 return -1; 1157} 1158 1159 1160int hostapd_init_wps_complete(struct hostapd_data *hapd) 1161{ 1162 struct wps_context *wps = hapd->wps; 1163 1164 if (wps == NULL) 1165 return 0; 1166 1167#ifdef CONFIG_WPS_UPNP 1168 if (hostapd_wps_upnp_init(hapd, wps) < 0) { 1169 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP"); 1170 wps_registrar_deinit(wps->registrar); 1171 hostapd_free_wps(wps); 1172 hapd->wps = NULL; 1173 return -1; 1174 } 1175#endif /* CONFIG_WPS_UPNP */ 1176 1177 return 0; 1178} 1179 1180 1181static void hostapd_wps_nfc_clear(struct wps_context *wps) 1182{ 1183#ifdef CONFIG_WPS_NFC 1184 wpa_printf(MSG_DEBUG, "WPS: Clear NFC Tag context %p", wps); 1185 wps->ap_nfc_dev_pw_id = 0; 1186 wpabuf_free(wps->ap_nfc_dh_pubkey); 1187 wps->ap_nfc_dh_pubkey = NULL; 1188 wpabuf_free(wps->ap_nfc_dh_privkey); 1189 wps->ap_nfc_dh_privkey = NULL; 1190 wpabuf_free(wps->ap_nfc_dev_pw); 1191 wps->ap_nfc_dev_pw = NULL; 1192#endif /* CONFIG_WPS_NFC */ 1193} 1194 1195 1196void hostapd_deinit_wps(struct hostapd_data *hapd) 1197{ 1198 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 1199 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1200 eloop_cancel_timeout(wps_reload_config, hapd->iface, NULL); 1201 if (hapd->wps == NULL) { 1202 hostapd_wps_clear_ies(hapd, 1); 1203 return; 1204 } 1205#ifdef CONFIG_WPS_UPNP 1206 hostapd_wps_upnp_deinit(hapd); 1207#endif /* CONFIG_WPS_UPNP */ 1208 wps_registrar_deinit(hapd->wps->registrar); 1209 wps_free_pending_msgs(hapd->wps->upnp_msgs); 1210 hostapd_free_wps(hapd->wps); 1211 hapd->wps = NULL; 1212 hostapd_wps_clear_ies(hapd, 1); 1213} 1214 1215 1216void hostapd_update_wps(struct hostapd_data *hapd) 1217{ 1218 if (hapd->wps == NULL) 1219 return; 1220 1221#ifdef CONFIG_WPS_UPNP 1222 hapd->wps->friendly_name = hapd->conf->friendly_name; 1223 hapd->wps->manufacturer_url = hapd->conf->manufacturer_url; 1224 hapd->wps->model_description = hapd->conf->model_description; 1225 hapd->wps->model_url = hapd->conf->model_url; 1226 hapd->wps->upc = hapd->conf->upc; 1227#endif /* CONFIG_WPS_UPNP */ 1228 1229 hostapd_wps_set_vendor_ext(hapd, hapd->wps); 1230 1231 if (hapd->conf->wps_state) 1232 wps_registrar_update_ie(hapd->wps->registrar); 1233 else 1234 hostapd_deinit_wps(hapd); 1235} 1236 1237 1238struct wps_add_pin_data { 1239 const u8 *addr; 1240 const u8 *uuid; 1241 const u8 *pin; 1242 size_t pin_len; 1243 int timeout; 1244 int added; 1245}; 1246 1247 1248static int wps_add_pin(struct hostapd_data *hapd, void *ctx) 1249{ 1250 struct wps_add_pin_data *data = ctx; 1251 int ret; 1252 1253 if (hapd->wps == NULL) 1254 return 0; 1255 ret = wps_registrar_add_pin(hapd->wps->registrar, data->addr, 1256 data->uuid, data->pin, data->pin_len, 1257 data->timeout); 1258 if (ret == 0) 1259 data->added++; 1260 return ret; 1261} 1262 1263 1264int hostapd_wps_add_pin(struct hostapd_data *hapd, const u8 *addr, 1265 const char *uuid, const char *pin, int timeout) 1266{ 1267 u8 u[UUID_LEN]; 1268 struct wps_add_pin_data data; 1269 1270 data.addr = addr; 1271 data.uuid = u; 1272 data.pin = (const u8 *) pin; 1273 data.pin_len = os_strlen(pin); 1274 data.timeout = timeout; 1275 data.added = 0; 1276 1277 if (os_strcmp(uuid, "any") == 0) 1278 data.uuid = NULL; 1279 else { 1280 if (uuid_str2bin(uuid, u)) 1281 return -1; 1282 data.uuid = u; 1283 } 1284 if (hostapd_wps_for_each(hapd, wps_add_pin, &data) < 0) 1285 return -1; 1286 return data.added ? 0 : -1; 1287} 1288 1289 1290static int wps_button_pushed(struct hostapd_data *hapd, void *ctx) 1291{ 1292 const u8 *p2p_dev_addr = ctx; 1293 if (hapd->wps == NULL) 1294 return -1; 1295 return wps_registrar_button_pushed(hapd->wps->registrar, p2p_dev_addr); 1296} 1297 1298 1299int hostapd_wps_button_pushed(struct hostapd_data *hapd, 1300 const u8 *p2p_dev_addr) 1301{ 1302 return hostapd_wps_for_each(hapd, wps_button_pushed, 1303 (void *) p2p_dev_addr); 1304} 1305 1306 1307static int wps_cancel(struct hostapd_data *hapd, void *ctx) 1308{ 1309 if (hapd->wps == NULL) 1310 return -1; 1311 1312 wps_registrar_wps_cancel(hapd->wps->registrar); 1313 ap_for_each_sta(hapd, ap_sta_wps_cancel, NULL); 1314 1315 return 0; 1316} 1317 1318 1319int hostapd_wps_cancel(struct hostapd_data *hapd) 1320{ 1321 return hostapd_wps_for_each(hapd, wps_cancel, NULL); 1322} 1323 1324 1325static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da, 1326 const u8 *bssid, 1327 const u8 *ie, size_t ie_len, 1328 int ssi_signal) 1329{ 1330 struct hostapd_data *hapd = ctx; 1331 struct wpabuf *wps_ie; 1332 struct ieee802_11_elems elems; 1333 1334 if (hapd->wps == NULL) 1335 return 0; 1336 1337 if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) { 1338 wpa_printf(MSG_DEBUG, "WPS: Could not parse ProbeReq from " 1339 MACSTR, MAC2STR(addr)); 1340 return 0; 1341 } 1342 1343 if (elems.ssid && elems.ssid_len > 0 && 1344 (elems.ssid_len != hapd->conf->ssid.ssid_len || 1345 os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) != 1346 0)) 1347 return 0; /* Not for us */ 1348 1349 wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA); 1350 if (wps_ie == NULL) 1351 return 0; 1352 if (wps_validate_probe_req(wps_ie, addr) < 0) { 1353 wpabuf_free(wps_ie); 1354 return 0; 1355 } 1356 1357 if (wpabuf_len(wps_ie) > 0) { 1358 int p2p_wildcard = 0; 1359#ifdef CONFIG_P2P 1360 if (elems.ssid && elems.ssid_len == P2P_WILDCARD_SSID_LEN && 1361 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, 1362 P2P_WILDCARD_SSID_LEN) == 0) 1363 p2p_wildcard = 1; 1364#endif /* CONFIG_P2P */ 1365 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie, 1366 p2p_wildcard); 1367#ifdef CONFIG_WPS_UPNP 1368 /* FIX: what exactly should be included in the WLANEvent? 1369 * WPS attributes? Full ProbeReq frame? */ 1370 if (!p2p_wildcard) 1371 upnp_wps_device_send_wlan_event( 1372 hapd->wps_upnp, addr, 1373 UPNP_WPS_WLANEVENT_TYPE_PROBE, wps_ie); 1374#endif /* CONFIG_WPS_UPNP */ 1375 } 1376 1377 wpabuf_free(wps_ie); 1378 1379 return 0; 1380} 1381 1382 1383#ifdef CONFIG_WPS_UPNP 1384 1385static int hostapd_rx_req_put_wlan_response( 1386 void *priv, enum upnp_wps_wlanevent_type ev_type, 1387 const u8 *mac_addr, const struct wpabuf *msg, 1388 enum wps_msg_type msg_type) 1389{ 1390 struct hostapd_data *hapd = priv; 1391 struct sta_info *sta; 1392 struct upnp_pending_message *p; 1393 1394 wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr=" 1395 MACSTR, ev_type, MAC2STR(mac_addr)); 1396 wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage", 1397 wpabuf_head(msg), wpabuf_len(msg)); 1398 if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) { 1399 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected " 1400 "PutWLANResponse WLANEventType %d", ev_type); 1401 return -1; 1402 } 1403 1404 /* 1405 * EAP response to ongoing to WPS Registration. Send it to EAP-WSC 1406 * server implementation for delivery to the peer. 1407 */ 1408 1409 sta = ap_get_sta(hapd, mac_addr); 1410#ifndef CONFIG_WPS_STRICT 1411 if (!sta) { 1412 /* 1413 * Workaround - Intel wsccmd uses bogus NewWLANEventMAC: 1414 * Pick STA that is in an ongoing WPS registration without 1415 * checking the MAC address. 1416 */ 1417 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based " 1418 "on NewWLANEventMAC; try wildcard match"); 1419 for (sta = hapd->sta_list; sta; sta = sta->next) { 1420 if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS)) 1421 break; 1422 } 1423 } 1424#endif /* CONFIG_WPS_STRICT */ 1425 1426 if (!sta || !(sta->flags & WLAN_STA_WPS)) { 1427 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found"); 1428 return 0; 1429 } 1430 1431 if (!sta->eapol_sm) { 1432 /* 1433 * This can happen, e.g., if an ER sends an extra message after 1434 * the station has disassociated (but not fully 1435 * deauthenticated). 1436 */ 1437 wpa_printf(MSG_DEBUG, "WPS UPnP: Matching STA did not have EAPOL state machine initialized"); 1438 return 0; 1439 } 1440 1441 p = os_zalloc(sizeof(*p)); 1442 if (p == NULL) 1443 return -1; 1444 os_memcpy(p->addr, sta->addr, ETH_ALEN); 1445 p->msg = wpabuf_dup(msg); 1446 p->type = msg_type; 1447 p->next = hapd->wps->upnp_msgs; 1448 hapd->wps->upnp_msgs = p; 1449 1450 return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap); 1451} 1452 1453 1454static int hostapd_wps_upnp_init(struct hostapd_data *hapd, 1455 struct wps_context *wps) 1456{ 1457 struct upnp_wps_device_ctx *ctx; 1458 1459 if (!hapd->conf->upnp_iface) 1460 return 0; 1461 ctx = os_zalloc(sizeof(*ctx)); 1462 if (ctx == NULL) 1463 return -1; 1464 1465 ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response; 1466 if (hapd->conf->ap_pin) 1467 ctx->ap_pin = os_strdup(hapd->conf->ap_pin); 1468 1469 hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd, 1470 hapd->conf->upnp_iface); 1471 if (hapd->wps_upnp == NULL) 1472 return -1; 1473 wps->wps_upnp = hapd->wps_upnp; 1474 1475 return 0; 1476} 1477 1478 1479static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd) 1480{ 1481 upnp_wps_device_deinit(hapd->wps_upnp, hapd); 1482} 1483 1484#endif /* CONFIG_WPS_UPNP */ 1485 1486 1487int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr, 1488 char *buf, size_t buflen) 1489{ 1490 if (hapd->wps == NULL) 1491 return 0; 1492 return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen); 1493} 1494 1495 1496static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx) 1497{ 1498 struct hostapd_data *hapd = eloop_data; 1499 wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out"); 1500 hostapd_wps_ap_pin_disable(hapd); 1501 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_PIN_DISABLED); 1502} 1503 1504 1505static void hostapd_wps_ap_pin_enable(struct hostapd_data *hapd, int timeout) 1506{ 1507 wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout); 1508 hapd->ap_pin_failures = 0; 1509 hapd->ap_pin_failures_consecutive = 0; 1510 hapd->conf->ap_setup_locked = 0; 1511 if (hapd->wps->ap_setup_locked) { 1512 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED); 1513 hapd->wps->ap_setup_locked = 0; 1514 wps_registrar_update_ie(hapd->wps->registrar); 1515 } 1516 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1517 if (timeout > 0) 1518 eloop_register_timeout(timeout, 0, 1519 hostapd_wps_ap_pin_timeout, hapd, NULL); 1520} 1521 1522 1523static int wps_ap_pin_disable(struct hostapd_data *hapd, void *ctx) 1524{ 1525 os_free(hapd->conf->ap_pin); 1526 hapd->conf->ap_pin = NULL; 1527#ifdef CONFIG_WPS_UPNP 1528 upnp_wps_set_ap_pin(hapd->wps_upnp, NULL); 1529#endif /* CONFIG_WPS_UPNP */ 1530 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1531 return 0; 1532} 1533 1534 1535void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd) 1536{ 1537 wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN"); 1538 hostapd_wps_for_each(hapd, wps_ap_pin_disable, NULL); 1539} 1540 1541 1542struct wps_ap_pin_data { 1543 char pin_txt[9]; 1544 int timeout; 1545}; 1546 1547 1548static int wps_ap_pin_set(struct hostapd_data *hapd, void *ctx) 1549{ 1550 struct wps_ap_pin_data *data = ctx; 1551 os_free(hapd->conf->ap_pin); 1552 hapd->conf->ap_pin = os_strdup(data->pin_txt); 1553#ifdef CONFIG_WPS_UPNP 1554 upnp_wps_set_ap_pin(hapd->wps_upnp, data->pin_txt); 1555#endif /* CONFIG_WPS_UPNP */ 1556 hostapd_wps_ap_pin_enable(hapd, data->timeout); 1557 return 0; 1558} 1559 1560 1561const char * hostapd_wps_ap_pin_random(struct hostapd_data *hapd, int timeout) 1562{ 1563 unsigned int pin; 1564 struct wps_ap_pin_data data; 1565 1566 pin = wps_generate_pin(); 1567 os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%08u", pin); 1568 data.timeout = timeout; 1569 hostapd_wps_for_each(hapd, wps_ap_pin_set, &data); 1570 return hapd->conf->ap_pin; 1571} 1572 1573 1574const char * hostapd_wps_ap_pin_get(struct hostapd_data *hapd) 1575{ 1576 return hapd->conf->ap_pin; 1577} 1578 1579 1580int hostapd_wps_ap_pin_set(struct hostapd_data *hapd, const char *pin, 1581 int timeout) 1582{ 1583 struct wps_ap_pin_data data; 1584 int ret; 1585 1586 ret = os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%s", pin); 1587 if (os_snprintf_error(sizeof(data.pin_txt), ret)) 1588 return -1; 1589 data.timeout = timeout; 1590 return hostapd_wps_for_each(hapd, wps_ap_pin_set, &data); 1591} 1592 1593 1594static int wps_update_ie(struct hostapd_data *hapd, void *ctx) 1595{ 1596 if (hapd->wps) 1597 wps_registrar_update_ie(hapd->wps->registrar); 1598 return 0; 1599} 1600 1601 1602void hostapd_wps_update_ie(struct hostapd_data *hapd) 1603{ 1604 hostapd_wps_for_each(hapd, wps_update_ie, NULL); 1605} 1606 1607 1608int hostapd_wps_config_ap(struct hostapd_data *hapd, const char *ssid, 1609 const char *auth, const char *encr, const char *key) 1610{ 1611 struct wps_credential cred; 1612 size_t len; 1613 1614 os_memset(&cred, 0, sizeof(cred)); 1615 1616 len = os_strlen(ssid); 1617 if ((len & 1) || len > 2 * sizeof(cred.ssid) || 1618 hexstr2bin(ssid, cred.ssid, len / 2)) 1619 return -1; 1620 cred.ssid_len = len / 2; 1621 1622 if (os_strncmp(auth, "OPEN", 4) == 0) 1623 cred.auth_type = WPS_AUTH_OPEN; 1624 else if (os_strncmp(auth, "WPAPSK", 6) == 0) 1625 cred.auth_type = WPS_AUTH_WPAPSK; 1626 else if (os_strncmp(auth, "WPA2PSK", 7) == 0) 1627 cred.auth_type = WPS_AUTH_WPA2PSK; 1628 else 1629 return -1; 1630 1631 if (encr) { 1632 if (os_strncmp(encr, "NONE", 4) == 0) 1633 cred.encr_type = WPS_ENCR_NONE; 1634 else if (os_strncmp(encr, "TKIP", 4) == 0) 1635 cred.encr_type = WPS_ENCR_TKIP; 1636 else if (os_strncmp(encr, "CCMP", 4) == 0) 1637 cred.encr_type = WPS_ENCR_AES; 1638 else 1639 return -1; 1640 } else 1641 cred.encr_type = WPS_ENCR_NONE; 1642 1643 if (key) { 1644 len = os_strlen(key); 1645 if ((len & 1) || len > 2 * sizeof(cred.key) || 1646 hexstr2bin(key, cred.key, len / 2)) 1647 return -1; 1648 cred.key_len = len / 2; 1649 } 1650 1651 return wps_registrar_config_ap(hapd->wps->registrar, &cred); 1652} 1653 1654 1655#ifdef CONFIG_WPS_NFC 1656 1657struct wps_nfc_password_token_data { 1658 const u8 *oob_dev_pw; 1659 size_t oob_dev_pw_len; 1660 int added; 1661}; 1662 1663 1664static int wps_add_nfc_password_token(struct hostapd_data *hapd, void *ctx) 1665{ 1666 struct wps_nfc_password_token_data *data = ctx; 1667 int ret; 1668 1669 if (hapd->wps == NULL) 1670 return 0; 1671 ret = wps_registrar_add_nfc_password_token(hapd->wps->registrar, 1672 data->oob_dev_pw, 1673 data->oob_dev_pw_len); 1674 if (ret == 0) 1675 data->added++; 1676 return ret; 1677} 1678 1679 1680static int hostapd_wps_add_nfc_password_token(struct hostapd_data *hapd, 1681 struct wps_parse_attr *attr) 1682{ 1683 struct wps_nfc_password_token_data data; 1684 1685 data.oob_dev_pw = attr->oob_dev_password; 1686 data.oob_dev_pw_len = attr->oob_dev_password_len; 1687 data.added = 0; 1688 if (hostapd_wps_for_each(hapd, wps_add_nfc_password_token, &data) < 0) 1689 return -1; 1690 return data.added ? 0 : -1; 1691} 1692 1693 1694static int hostapd_wps_nfc_tag_process(struct hostapd_data *hapd, 1695 const struct wpabuf *wps) 1696{ 1697 struct wps_parse_attr attr; 1698 1699 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps); 1700 1701 if (wps_parse_msg(wps, &attr)) { 1702 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag"); 1703 return -1; 1704 } 1705 1706 if (attr.oob_dev_password) 1707 return hostapd_wps_add_nfc_password_token(hapd, &attr); 1708 1709 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag"); 1710 return -1; 1711} 1712 1713 1714int hostapd_wps_nfc_tag_read(struct hostapd_data *hapd, 1715 const struct wpabuf *data) 1716{ 1717 const struct wpabuf *wps = data; 1718 struct wpabuf *tmp = NULL; 1719 int ret; 1720 1721 if (wpabuf_len(data) < 4) 1722 return -1; 1723 1724 if (*wpabuf_head_u8(data) != 0x10) { 1725 /* Assume this contains full NDEF record */ 1726 tmp = ndef_parse_wifi(data); 1727 if (tmp == NULL) { 1728 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF"); 1729 return -1; 1730 } 1731 wps = tmp; 1732 } 1733 1734 ret = hostapd_wps_nfc_tag_process(hapd, wps); 1735 wpabuf_free(tmp); 1736 return ret; 1737} 1738 1739 1740struct wpabuf * hostapd_wps_nfc_config_token(struct hostapd_data *hapd, 1741 int ndef) 1742{ 1743 struct wpabuf *ret; 1744 1745 if (hapd->wps == NULL) 1746 return NULL; 1747 1748 ret = wps_get_oob_cred(hapd->wps, hostapd_wps_rf_band_cb(hapd), 1749 hapd->iconf->channel); 1750 if (ndef && ret) { 1751 struct wpabuf *tmp; 1752 tmp = ndef_build_wifi(ret); 1753 wpabuf_free(ret); 1754 if (tmp == NULL) 1755 return NULL; 1756 ret = tmp; 1757 } 1758 1759 return ret; 1760} 1761 1762 1763struct wpabuf * hostapd_wps_nfc_hs_cr(struct hostapd_data *hapd, int ndef) 1764{ 1765 struct wpabuf *ret; 1766 1767 if (hapd->wps == NULL) 1768 return NULL; 1769 1770 if (hapd->conf->wps_nfc_dh_pubkey == NULL) { 1771 struct wps_context *wps = hapd->wps; 1772 if (wps_nfc_gen_dh(&hapd->conf->wps_nfc_dh_pubkey, 1773 &hapd->conf->wps_nfc_dh_privkey) < 0) 1774 return NULL; 1775 hostapd_wps_nfc_clear(wps); 1776 wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER; 1777 wps->ap_nfc_dh_pubkey = 1778 wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey); 1779 wps->ap_nfc_dh_privkey = 1780 wpabuf_dup(hapd->conf->wps_nfc_dh_privkey); 1781 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) { 1782 hostapd_wps_nfc_clear(wps); 1783 return NULL; 1784 } 1785 } 1786 1787 ret = wps_build_nfc_handover_sel(hapd->wps, 1788 hapd->conf->wps_nfc_dh_pubkey, 1789 hapd->own_addr, hapd->iface->freq); 1790 1791 if (ndef && ret) { 1792 struct wpabuf *tmp; 1793 tmp = ndef_build_wifi(ret); 1794 wpabuf_free(ret); 1795 if (tmp == NULL) 1796 return NULL; 1797 ret = tmp; 1798 } 1799 1800 return ret; 1801} 1802 1803 1804int hostapd_wps_nfc_report_handover(struct hostapd_data *hapd, 1805 const struct wpabuf *req, 1806 const struct wpabuf *sel) 1807{ 1808 struct wpabuf *wps; 1809 int ret = -1; 1810 u16 wsc_len; 1811 const u8 *pos; 1812 struct wpabuf msg; 1813 struct wps_parse_attr attr; 1814 u16 dev_pw_id; 1815 1816 /* 1817 * Enrollee/station is always initiator of the NFC connection handover, 1818 * so use the request message here to find Enrollee public key hash. 1819 */ 1820 wps = ndef_parse_wifi(req); 1821 if (wps == NULL) 1822 return -1; 1823 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc " 1824 "payload from NFC connection handover"); 1825 wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps); 1826 if (wpabuf_len(wps) < 2) { 1827 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request " 1828 "Message"); 1829 goto out; 1830 } 1831 pos = wpabuf_head(wps); 1832 wsc_len = WPA_GET_BE16(pos); 1833 if (wsc_len > wpabuf_len(wps) - 2) { 1834 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) " 1835 "in rt Wi-Fi Handover Request Message", wsc_len); 1836 goto out; 1837 } 1838 pos += 2; 1839 1840 wpa_hexdump(MSG_DEBUG, 1841 "WPS: WSC attributes in Wi-Fi Handover Request Message", 1842 pos, wsc_len); 1843 if (wsc_len < wpabuf_len(wps) - 2) { 1844 wpa_hexdump(MSG_DEBUG, 1845 "WPS: Ignore extra data after WSC attributes", 1846 pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len); 1847 } 1848 1849 wpabuf_set(&msg, pos, wsc_len); 1850 ret = wps_parse_msg(&msg, &attr); 1851 if (ret < 0) { 1852 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in " 1853 "Wi-Fi Handover Request Message"); 1854 goto out; 1855 } 1856 1857 if (attr.oob_dev_password == NULL || 1858 attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) { 1859 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password " 1860 "included in Wi-Fi Handover Request Message"); 1861 ret = -1; 1862 goto out; 1863 } 1864 1865 if (attr.uuid_e == NULL) { 1866 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi " 1867 "Handover Request Message"); 1868 ret = -1; 1869 goto out; 1870 } 1871 1872 wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN); 1873 1874 wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password", 1875 attr.oob_dev_password, attr.oob_dev_password_len); 1876 dev_pw_id = WPA_GET_BE16(attr.oob_dev_password + 1877 WPS_OOB_PUBKEY_HASH_LEN); 1878 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) { 1879 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID " 1880 "%u in Wi-Fi Handover Request Message", dev_pw_id); 1881 ret = -1; 1882 goto out; 1883 } 1884 wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash", 1885 attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN); 1886 1887 ret = wps_registrar_add_nfc_pw_token(hapd->wps->registrar, 1888 attr.oob_dev_password, 1889 DEV_PW_NFC_CONNECTION_HANDOVER, 1890 NULL, 0, 1); 1891 1892out: 1893 wpabuf_free(wps); 1894 return ret; 1895} 1896 1897 1898struct wpabuf * hostapd_wps_nfc_token_gen(struct hostapd_data *hapd, int ndef) 1899{ 1900 if (hapd->conf->wps_nfc_pw_from_config) { 1901 return wps_nfc_token_build(ndef, 1902 hapd->conf->wps_nfc_dev_pw_id, 1903 hapd->conf->wps_nfc_dh_pubkey, 1904 hapd->conf->wps_nfc_dev_pw); 1905 } 1906 1907 return wps_nfc_token_gen(ndef, &hapd->conf->wps_nfc_dev_pw_id, 1908 &hapd->conf->wps_nfc_dh_pubkey, 1909 &hapd->conf->wps_nfc_dh_privkey, 1910 &hapd->conf->wps_nfc_dev_pw); 1911} 1912 1913 1914int hostapd_wps_nfc_token_enable(struct hostapd_data *hapd) 1915{ 1916 struct wps_context *wps = hapd->wps; 1917 struct wpabuf *pw; 1918 1919 if (wps == NULL) 1920 return -1; 1921 1922 if (!hapd->conf->wps_nfc_dh_pubkey || 1923 !hapd->conf->wps_nfc_dh_privkey || 1924 !hapd->conf->wps_nfc_dev_pw || 1925 !hapd->conf->wps_nfc_dev_pw_id) 1926 return -1; 1927 1928 hostapd_wps_nfc_clear(wps); 1929 wpa_printf(MSG_DEBUG, 1930 "WPS: Enable NFC Tag (Dev Pw Id %u) for AP interface %s (context %p)", 1931 hapd->conf->wps_nfc_dev_pw_id, hapd->conf->iface, wps); 1932 wps->ap_nfc_dev_pw_id = hapd->conf->wps_nfc_dev_pw_id; 1933 wps->ap_nfc_dh_pubkey = wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey); 1934 wps->ap_nfc_dh_privkey = wpabuf_dup(hapd->conf->wps_nfc_dh_privkey); 1935 pw = hapd->conf->wps_nfc_dev_pw; 1936 wps->ap_nfc_dev_pw = wpabuf_alloc( 1937 wpabuf_len(pw) * 2 + 1); 1938 if (wps->ap_nfc_dev_pw) { 1939 wpa_snprintf_hex_uppercase( 1940 (char *) wpabuf_put(wps->ap_nfc_dev_pw, 1941 wpabuf_len(pw) * 2), 1942 wpabuf_len(pw) * 2 + 1, 1943 wpabuf_head(pw), wpabuf_len(pw)); 1944 } 1945 1946 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey || 1947 !wps->ap_nfc_dev_pw) { 1948 hostapd_wps_nfc_clear(wps); 1949 return -1; 1950 } 1951 1952 return 0; 1953} 1954 1955 1956void hostapd_wps_nfc_token_disable(struct hostapd_data *hapd) 1957{ 1958 wpa_printf(MSG_DEBUG, "WPS: Disable NFC token for AP interface %s", 1959 hapd->conf->iface); 1960 hostapd_wps_nfc_clear(hapd->wps); 1961} 1962 1963#endif /* CONFIG_WPS_NFC */ 1964