wps_hostapd.c revision 6cb1f6521a84955752c2b99100cf1df87637f86c
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 (len > 0 && len < (int) sizeof(txt)) 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 <= HOSTAPD_MAX_SSID_LEN) { 328 os_memcpy(bss->ssid.ssid, cred->ssid, cred->ssid_len); 329 bss->ssid.ssid_len = cred->ssid_len; 330 bss->ssid.ssid_set = 1; 331 } 332 333 if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) && 334 (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))) 335 bss->wpa = 3; 336 else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) 337 bss->wpa = 2; 338 else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)) 339 bss->wpa = 1; 340 else 341 bss->wpa = 0; 342 343 if (bss->wpa) { 344 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) 345 bss->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X; 346 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK)) 347 bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK; 348 349 bss->wpa_pairwise = 0; 350 if (cred->encr_type & WPS_ENCR_AES) 351 bss->wpa_pairwise |= WPA_CIPHER_CCMP; 352 if (cred->encr_type & WPS_ENCR_TKIP) 353 bss->wpa_pairwise |= WPA_CIPHER_TKIP; 354 bss->rsn_pairwise = bss->wpa_pairwise; 355 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, 356 bss->wpa_pairwise, 357 bss->rsn_pairwise); 358 359 if (cred->key_len >= 8 && cred->key_len < 64) { 360 os_free(bss->ssid.wpa_passphrase); 361 bss->ssid.wpa_passphrase = os_zalloc(cred->key_len + 1); 362 if (bss->ssid.wpa_passphrase) 363 os_memcpy(bss->ssid.wpa_passphrase, cred->key, 364 cred->key_len); 365 os_free(bss->ssid.wpa_psk); 366 bss->ssid.wpa_psk = NULL; 367 } else if (cred->key_len == 64) { 368 os_free(bss->ssid.wpa_psk); 369 bss->ssid.wpa_psk = 370 os_zalloc(sizeof(struct hostapd_wpa_psk)); 371 if (bss->ssid.wpa_psk && 372 hexstr2bin((const char *) cred->key, 373 bss->ssid.wpa_psk->psk, PMK_LEN) == 0) { 374 bss->ssid.wpa_psk->group = 1; 375 os_free(bss->ssid.wpa_passphrase); 376 bss->ssid.wpa_passphrase = NULL; 377 } 378 } 379 bss->auth_algs = 1; 380 } else { 381 if ((cred->auth_type & WPS_AUTH_OPEN) && 382 (cred->auth_type & WPS_AUTH_SHARED)) 383 bss->auth_algs = 3; 384 else if (cred->auth_type & WPS_AUTH_SHARED) 385 bss->auth_algs = 2; 386 else 387 bss->auth_algs = 1; 388 if (cred->encr_type & WPS_ENCR_WEP && cred->key_idx > 0 && 389 cred->key_idx <= 4) { 390 struct hostapd_wep_keys *wep = &bss->ssid.wep; 391 int idx = cred->key_idx; 392 if (idx) 393 idx--; 394 wep->idx = idx; 395 if (cred->key_len == 10 || cred->key_len == 26) { 396 os_free(wep->key[idx]); 397 wep->key[idx] = os_malloc(cred->key_len / 2); 398 if (wep->key[idx] == NULL || 399 hexstr2bin((const char *) cred->key, 400 wep->key[idx], 401 cred->key_len / 2)) 402 return -1; 403 wep->len[idx] = cred->key_len / 2; 404 } else { 405 os_free(wep->key[idx]); 406 wep->key[idx] = os_malloc(cred->key_len); 407 if (wep->key[idx] == NULL) 408 return -1; 409 os_memcpy(wep->key[idx], cred->key, 410 cred->key_len); 411 wep->len[idx] = cred->key_len; 412 } 413 wep->keys_set = 1; 414 } 415 } 416 417 /* Schedule configuration reload after short period of time to allow 418 * EAP-WSC to be finished. 419 */ 420 eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface, 421 NULL); 422 423 return 0; 424} 425 426 427static int hapd_wps_cred_cb(struct hostapd_data *hapd, void *ctx) 428{ 429 const struct wps_credential *cred = ctx; 430 FILE *oconf, *nconf; 431 size_t len, i; 432 char *tmp_fname; 433 char buf[1024]; 434 int multi_bss; 435 int wpa; 436 437 if (hapd->wps == NULL) 438 return 0; 439 440 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute", 441 cred->cred_attr, cred->cred_attr_len); 442 443 wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings"); 444 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len); 445 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x", 446 cred->auth_type); 447 wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type); 448 wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx); 449 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key", 450 cred->key, cred->key_len); 451 wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR, 452 MAC2STR(cred->mac_addr)); 453 454 if ((hapd->conf->wps_cred_processing == 1 || 455 hapd->conf->wps_cred_processing == 2) && cred->cred_attr) { 456 hapd_new_ap_event(hapd, cred->cred_attr, cred->cred_attr_len); 457 } else if (hapd->conf->wps_cred_processing == 1 || 458 hapd->conf->wps_cred_processing == 2) { 459 struct wpabuf *attr; 460 attr = wpabuf_alloc(200); 461 if (attr && wps_build_credential_wrap(attr, cred) == 0) 462 hapd_new_ap_event(hapd, wpabuf_head_u8(attr), 463 wpabuf_len(attr)); 464 wpabuf_free(attr); 465 } else 466 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS); 467 468 if (hapd->conf->wps_cred_processing == 1) 469 return 0; 470 471 os_memcpy(hapd->wps->ssid, cred->ssid, cred->ssid_len); 472 hapd->wps->ssid_len = cred->ssid_len; 473 hapd->wps->encr_types = cred->encr_type; 474 hapd->wps->auth_types = cred->auth_type; 475 hapd->wps->ap_encr_type = cred->encr_type; 476 hapd->wps->ap_auth_type = cred->auth_type; 477 if (cred->key_len == 0) { 478 os_free(hapd->wps->network_key); 479 hapd->wps->network_key = NULL; 480 hapd->wps->network_key_len = 0; 481 } else { 482 if (hapd->wps->network_key == NULL || 483 hapd->wps->network_key_len < cred->key_len) { 484 hapd->wps->network_key_len = 0; 485 os_free(hapd->wps->network_key); 486 hapd->wps->network_key = os_malloc(cred->key_len); 487 if (hapd->wps->network_key == NULL) 488 return -1; 489 } 490 hapd->wps->network_key_len = cred->key_len; 491 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len); 492 } 493 hapd->wps->wps_state = WPS_STATE_CONFIGURED; 494 495 if (hapd->iface->config_fname == NULL) 496 return hapd_wps_reconfig_in_memory(hapd, cred); 497 len = os_strlen(hapd->iface->config_fname) + 5; 498 tmp_fname = os_malloc(len); 499 if (tmp_fname == NULL) 500 return -1; 501 os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname); 502 503 oconf = fopen(hapd->iface->config_fname, "r"); 504 if (oconf == NULL) { 505 wpa_printf(MSG_WARNING, "WPS: Could not open current " 506 "configuration file"); 507 os_free(tmp_fname); 508 return -1; 509 } 510 511 nconf = fopen(tmp_fname, "w"); 512 if (nconf == NULL) { 513 wpa_printf(MSG_WARNING, "WPS: Could not write updated " 514 "configuration file"); 515 os_free(tmp_fname); 516 fclose(oconf); 517 return -1; 518 } 519 520 fprintf(nconf, "# WPS configuration - START\n"); 521 522 fprintf(nconf, "wps_state=2\n"); 523 524 if (is_hex(cred->ssid, cred->ssid_len)) { 525 fprintf(nconf, "ssid2="); 526 for (i = 0; i < cred->ssid_len; i++) 527 fprintf(nconf, "%02x", cred->ssid[i]); 528 fprintf(nconf, "\n"); 529 } else { 530 fprintf(nconf, "ssid="); 531 for (i = 0; i < cred->ssid_len; i++) 532 fputc(cred->ssid[i], nconf); 533 fprintf(nconf, "\n"); 534 } 535 536 if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) && 537 (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))) 538 wpa = 3; 539 else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) 540 wpa = 2; 541 else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)) 542 wpa = 1; 543 else 544 wpa = 0; 545 546 if (wpa) { 547 char *prefix; 548 fprintf(nconf, "wpa=%d\n", wpa); 549 550 fprintf(nconf, "wpa_key_mgmt="); 551 prefix = ""; 552 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) { 553 fprintf(nconf, "WPA-EAP"); 554 prefix = " "; 555 } 556 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK)) 557 fprintf(nconf, "%sWPA-PSK", prefix); 558 fprintf(nconf, "\n"); 559 560 fprintf(nconf, "wpa_pairwise="); 561 prefix = ""; 562 if (cred->encr_type & WPS_ENCR_AES) { 563 fprintf(nconf, "CCMP"); 564 prefix = " "; 565 } 566 if (cred->encr_type & WPS_ENCR_TKIP) { 567 fprintf(nconf, "%sTKIP", prefix); 568 } 569 fprintf(nconf, "\n"); 570 571 if (cred->key_len >= 8 && cred->key_len < 64) { 572 fprintf(nconf, "wpa_passphrase="); 573 for (i = 0; i < cred->key_len; i++) 574 fputc(cred->key[i], nconf); 575 fprintf(nconf, "\n"); 576 } else if (cred->key_len == 64) { 577 fprintf(nconf, "wpa_psk="); 578 for (i = 0; i < cred->key_len; i++) 579 fputc(cred->key[i], nconf); 580 fprintf(nconf, "\n"); 581 } else { 582 wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu " 583 "for WPA/WPA2", 584 (unsigned long) cred->key_len); 585 } 586 587 fprintf(nconf, "auth_algs=1\n"); 588 } else { 589 if ((cred->auth_type & WPS_AUTH_OPEN) && 590 (cred->auth_type & WPS_AUTH_SHARED)) 591 fprintf(nconf, "auth_algs=3\n"); 592 else if (cred->auth_type & WPS_AUTH_SHARED) 593 fprintf(nconf, "auth_algs=2\n"); 594 else 595 fprintf(nconf, "auth_algs=1\n"); 596 597 if (cred->encr_type & WPS_ENCR_WEP && cred->key_idx <= 4) { 598 int key_idx = cred->key_idx; 599 if (key_idx) 600 key_idx--; 601 fprintf(nconf, "wep_default_key=%d\n", key_idx); 602 fprintf(nconf, "wep_key%d=", key_idx); 603 if (cred->key_len == 10 || cred->key_len == 26) { 604 /* WEP key as a hex string */ 605 for (i = 0; i < cred->key_len; i++) 606 fputc(cred->key[i], nconf); 607 } else { 608 /* Raw WEP key; convert to hex */ 609 for (i = 0; i < cred->key_len; i++) 610 fprintf(nconf, "%02x", cred->key[i]); 611 } 612 fprintf(nconf, "\n"); 613 } 614 } 615 616 fprintf(nconf, "# WPS configuration - END\n"); 617 618 multi_bss = 0; 619 while (fgets(buf, sizeof(buf), oconf)) { 620 if (os_strncmp(buf, "bss=", 4) == 0) 621 multi_bss = 1; 622 if (!multi_bss && 623 (str_starts(buf, "ssid=") || 624 str_starts(buf, "ssid2=") || 625 str_starts(buf, "auth_algs=") || 626 str_starts(buf, "wep_default_key=") || 627 str_starts(buf, "wep_key") || 628 str_starts(buf, "wps_state=") || 629 str_starts(buf, "wpa=") || 630 str_starts(buf, "wpa_psk=") || 631 str_starts(buf, "wpa_pairwise=") || 632 str_starts(buf, "rsn_pairwise=") || 633 str_starts(buf, "wpa_key_mgmt=") || 634 str_starts(buf, "wpa_passphrase="))) { 635 fprintf(nconf, "#WPS# %s", buf); 636 } else 637 fprintf(nconf, "%s", buf); 638 } 639 640 fclose(nconf); 641 fclose(oconf); 642 643 if (rename(tmp_fname, hapd->iface->config_fname) < 0) { 644 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated " 645 "configuration file: %s", strerror(errno)); 646 os_free(tmp_fname); 647 return -1; 648 } 649 650 os_free(tmp_fname); 651 652 /* Schedule configuration reload after short period of time to allow 653 * EAP-WSC to be finished. 654 */ 655 eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface, 656 NULL); 657 658 wpa_printf(MSG_DEBUG, "WPS: AP configuration updated"); 659 660 return 0; 661} 662 663 664static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred) 665{ 666 struct hostapd_data *hapd = ctx; 667 return hostapd_wps_for_each(hapd, hapd_wps_cred_cb, (void *) cred); 668} 669 670 671static void hostapd_wps_reenable_ap_pin(void *eloop_data, void *user_ctx) 672{ 673 struct hostapd_data *hapd = eloop_data; 674 675 if (hapd->conf->ap_setup_locked) 676 return; 677 if (hapd->ap_pin_failures_consecutive >= 10) 678 return; 679 680 wpa_printf(MSG_DEBUG, "WPS: Re-enable AP PIN"); 681 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED); 682 hapd->wps->ap_setup_locked = 0; 683 wps_registrar_update_ie(hapd->wps->registrar); 684} 685 686 687static int wps_pwd_auth_fail(struct hostapd_data *hapd, void *ctx) 688{ 689 struct wps_event_pwd_auth_fail *data = ctx; 690 691 if (!data->enrollee || hapd->conf->ap_pin == NULL || hapd->wps == NULL) 692 return 0; 693 694 /* 695 * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup 696 * for some time if this happens multiple times to slow down brute 697 * force attacks. 698 */ 699 hapd->ap_pin_failures++; 700 hapd->ap_pin_failures_consecutive++; 701 wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u " 702 "(%u consecutive)", 703 hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive); 704 if (hapd->ap_pin_failures < 3) 705 return 0; 706 707 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED); 708 hapd->wps->ap_setup_locked = 1; 709 710 wps_registrar_update_ie(hapd->wps->registrar); 711 712 if (!hapd->conf->ap_setup_locked && 713 hapd->ap_pin_failures_consecutive >= 10) { 714 /* 715 * In indefinite lockdown - disable automatic AP PIN 716 * reenablement. 717 */ 718 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 719 wpa_printf(MSG_DEBUG, "WPS: AP PIN disabled indefinitely"); 720 } else if (!hapd->conf->ap_setup_locked) { 721 if (hapd->ap_pin_lockout_time == 0) 722 hapd->ap_pin_lockout_time = 60; 723 else if (hapd->ap_pin_lockout_time < 365 * 24 * 60 * 60 && 724 (hapd->ap_pin_failures % 3) == 0) 725 hapd->ap_pin_lockout_time *= 2; 726 727 wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN for %u seconds", 728 hapd->ap_pin_lockout_time); 729 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 730 eloop_register_timeout(hapd->ap_pin_lockout_time, 0, 731 hostapd_wps_reenable_ap_pin, hapd, 732 NULL); 733 } 734 735 return 0; 736} 737 738 739static void hostapd_pwd_auth_fail(struct hostapd_data *hapd, 740 struct wps_event_pwd_auth_fail *data) 741{ 742 /* Update WPS Status - Authentication Failure */ 743 wpa_printf(MSG_DEBUG, "WPS: Authentication failure update"); 744 hapd->wps_stats.status = WPS_STATUS_FAILURE; 745 hapd->wps_stats.failure_reason = WPS_EI_AUTH_FAILURE; 746 os_memcpy(hapd->wps_stats.peer_addr, data->peer_macaddr, ETH_ALEN); 747 748 hostapd_wps_for_each(hapd, wps_pwd_auth_fail, data); 749} 750 751 752static int wps_ap_pin_success(struct hostapd_data *hapd, void *ctx) 753{ 754 if (hapd->conf->ap_pin == NULL || hapd->wps == NULL) 755 return 0; 756 757 if (hapd->ap_pin_failures_consecutive == 0) 758 return 0; 759 760 wpa_printf(MSG_DEBUG, "WPS: Clear consecutive AP PIN failure counter " 761 "- total validation failures %u (%u consecutive)", 762 hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive); 763 hapd->ap_pin_failures_consecutive = 0; 764 765 return 0; 766} 767 768 769static void hostapd_wps_ap_pin_success(struct hostapd_data *hapd) 770{ 771 hostapd_wps_for_each(hapd, wps_ap_pin_success, NULL); 772} 773 774 775static void hostapd_wps_event_pbc_overlap(struct hostapd_data *hapd) 776{ 777 /* Update WPS Status - PBC Overlap */ 778 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_OVERLAP; 779} 780 781 782static void hostapd_wps_event_pbc_timeout(struct hostapd_data *hapd) 783{ 784 /* Update WPS PBC Status:PBC Timeout */ 785 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_TIMEOUT; 786} 787 788 789static void hostapd_wps_event_pbc_active(struct hostapd_data *hapd) 790{ 791 /* Update WPS PBC status - Active */ 792 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_ACTIVE; 793} 794 795 796static void hostapd_wps_event_pbc_disable(struct hostapd_data *hapd) 797{ 798 /* Update WPS PBC status - Active */ 799 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE; 800} 801 802 803static void hostapd_wps_event_success(struct hostapd_data *hapd, 804 struct wps_event_success *success) 805{ 806 /* Update WPS status - Success */ 807 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE; 808 hapd->wps_stats.status = WPS_STATUS_SUCCESS; 809 os_memcpy(hapd->wps_stats.peer_addr, success->peer_macaddr, ETH_ALEN); 810} 811 812 813static void hostapd_wps_event_fail(struct hostapd_data *hapd, 814 struct wps_event_fail *fail) 815{ 816 /* Update WPS status - Failure */ 817 hapd->wps_stats.status = WPS_STATUS_FAILURE; 818 os_memcpy(hapd->wps_stats.peer_addr, fail->peer_macaddr, ETH_ALEN); 819 820 hapd->wps_stats.failure_reason = fail->error_indication; 821 822 if (fail->error_indication > 0 && 823 fail->error_indication < NUM_WPS_EI_VALUES) { 824 wpa_msg(hapd->msg_ctx, MSG_INFO, 825 WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)", 826 fail->msg, fail->config_error, fail->error_indication, 827 wps_ei_str(fail->error_indication)); 828 } else { 829 wpa_msg(hapd->msg_ctx, MSG_INFO, 830 WPS_EVENT_FAIL "msg=%d config_error=%d", 831 fail->msg, fail->config_error); 832 } 833} 834 835 836static void hostapd_wps_event_cb(void *ctx, enum wps_event event, 837 union wps_event_data *data) 838{ 839 struct hostapd_data *hapd = ctx; 840 841 switch (event) { 842 case WPS_EV_M2D: 843 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_M2D); 844 break; 845 case WPS_EV_FAIL: 846 hostapd_wps_event_fail(hapd, &data->fail); 847 break; 848 case WPS_EV_SUCCESS: 849 hostapd_wps_event_success(hapd, &data->success); 850 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_SUCCESS); 851 break; 852 case WPS_EV_PWD_AUTH_FAIL: 853 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail); 854 break; 855 case WPS_EV_PBC_OVERLAP: 856 hostapd_wps_event_pbc_overlap(hapd); 857 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_OVERLAP); 858 break; 859 case WPS_EV_PBC_TIMEOUT: 860 hostapd_wps_event_pbc_timeout(hapd); 861 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_TIMEOUT); 862 break; 863 case WPS_EV_PBC_ACTIVE: 864 hostapd_wps_event_pbc_active(hapd); 865 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ACTIVE); 866 break; 867 case WPS_EV_PBC_DISABLE: 868 hostapd_wps_event_pbc_disable(hapd); 869 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_DISABLE); 870 break; 871 case WPS_EV_ER_AP_ADD: 872 break; 873 case WPS_EV_ER_AP_REMOVE: 874 break; 875 case WPS_EV_ER_ENROLLEE_ADD: 876 break; 877 case WPS_EV_ER_ENROLLEE_REMOVE: 878 break; 879 case WPS_EV_ER_AP_SETTINGS: 880 break; 881 case WPS_EV_ER_SET_SELECTED_REGISTRAR: 882 break; 883 case WPS_EV_AP_PIN_SUCCESS: 884 hostapd_wps_ap_pin_success(hapd); 885 break; 886 } 887 if (hapd->wps_event_cb) 888 hapd->wps_event_cb(hapd->wps_event_cb_ctx, event, data); 889} 890 891 892static int hostapd_wps_rf_band_cb(void *ctx) 893{ 894 struct hostapd_data *hapd = ctx; 895 896 return hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ? 897 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */ 898} 899 900 901static void hostapd_wps_clear_ies(struct hostapd_data *hapd, int deinit_only) 902{ 903 wpabuf_free(hapd->wps_beacon_ie); 904 hapd->wps_beacon_ie = NULL; 905 906 wpabuf_free(hapd->wps_probe_resp_ie); 907 hapd->wps_probe_resp_ie = NULL; 908 909 if (deinit_only) 910 return; 911 912 hostapd_set_ap_wps_ie(hapd); 913} 914 915 916static int get_uuid_cb(struct hostapd_iface *iface, void *ctx) 917{ 918 const u8 **uuid = ctx; 919 size_t j; 920 921 if (iface == NULL) 922 return 0; 923 for (j = 0; j < iface->num_bss; j++) { 924 struct hostapd_data *hapd = iface->bss[j]; 925 if (hapd->wps && !hapd->conf->wps_independent && 926 !is_nil_uuid(hapd->wps->uuid)) { 927 *uuid = hapd->wps->uuid; 928 return 1; 929 } 930 } 931 932 return 0; 933} 934 935 936static const u8 * get_own_uuid(struct hostapd_iface *iface) 937{ 938 const u8 *uuid; 939 if (iface->interfaces == NULL || 940 iface->interfaces->for_each_interface == NULL) 941 return NULL; 942 uuid = NULL; 943 iface->interfaces->for_each_interface(iface->interfaces, get_uuid_cb, 944 &uuid); 945 return uuid; 946} 947 948 949static int count_interface_cb(struct hostapd_iface *iface, void *ctx) 950{ 951 int *count= ctx; 952 (*count)++; 953 return 0; 954} 955 956 957static int interface_count(struct hostapd_iface *iface) 958{ 959 int count = 0; 960 if (iface->interfaces == NULL || 961 iface->interfaces->for_each_interface == NULL) 962 return 0; 963 iface->interfaces->for_each_interface(iface->interfaces, 964 count_interface_cb, &count); 965 return count; 966} 967 968 969static int hostapd_wps_set_vendor_ext(struct hostapd_data *hapd, 970 struct wps_context *wps) 971{ 972 int i; 973 974 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) { 975 wpabuf_free(wps->dev.vendor_ext[i]); 976 wps->dev.vendor_ext[i] = NULL; 977 978 if (hapd->conf->wps_vendor_ext[i] == NULL) 979 continue; 980 981 wps->dev.vendor_ext[i] = 982 wpabuf_dup(hapd->conf->wps_vendor_ext[i]); 983 if (wps->dev.vendor_ext[i] == NULL) { 984 while (--i >= 0) 985 wpabuf_free(wps->dev.vendor_ext[i]); 986 return -1; 987 } 988 } 989 990 return 0; 991} 992 993 994static void hostapd_free_wps(struct wps_context *wps) 995{ 996 int i; 997 998 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) 999 wpabuf_free(wps->dev.vendor_ext[i]); 1000 wps_device_data_free(&wps->dev); 1001 os_free(wps->network_key); 1002 hostapd_wps_nfc_clear(wps); 1003 wpabuf_free(wps->dh_pubkey); 1004 wpabuf_free(wps->dh_privkey); 1005 os_free(wps); 1006} 1007 1008 1009int hostapd_init_wps(struct hostapd_data *hapd, 1010 struct hostapd_bss_config *conf) 1011{ 1012 struct wps_context *wps; 1013 struct wps_registrar_config cfg; 1014 1015 if (conf->wps_state == 0) { 1016 hostapd_wps_clear_ies(hapd, 0); 1017 return 0; 1018 } 1019 1020 wps = os_zalloc(sizeof(*wps)); 1021 if (wps == NULL) 1022 return -1; 1023 1024 wps->cred_cb = hostapd_wps_cred_cb; 1025 wps->event_cb = hostapd_wps_event_cb; 1026 wps->rf_band_cb = hostapd_wps_rf_band_cb; 1027 wps->cb_ctx = hapd; 1028 1029 os_memset(&cfg, 0, sizeof(cfg)); 1030 wps->wps_state = hapd->conf->wps_state; 1031 wps->ap_setup_locked = hapd->conf->ap_setup_locked; 1032 if (is_nil_uuid(hapd->conf->uuid)) { 1033 const u8 *uuid; 1034 uuid = get_own_uuid(hapd->iface); 1035 if (uuid && !conf->wps_independent) { 1036 os_memcpy(wps->uuid, uuid, UUID_LEN); 1037 wpa_hexdump(MSG_DEBUG, "WPS: Clone UUID from another " 1038 "interface", wps->uuid, UUID_LEN); 1039 } else { 1040 uuid_gen_mac_addr(hapd->own_addr, wps->uuid); 1041 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC " 1042 "address", wps->uuid, UUID_LEN); 1043 } 1044 } else { 1045 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN); 1046 wpa_hexdump(MSG_DEBUG, "WPS: Use configured UUID", 1047 wps->uuid, UUID_LEN); 1048 } 1049 wps->ssid_len = hapd->conf->ssid.ssid_len; 1050 os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len); 1051 wps->ap = 1; 1052 os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN); 1053 wps->dev.device_name = hapd->conf->device_name ? 1054 os_strdup(hapd->conf->device_name) : NULL; 1055 wps->dev.manufacturer = hapd->conf->manufacturer ? 1056 os_strdup(hapd->conf->manufacturer) : NULL; 1057 wps->dev.model_name = hapd->conf->model_name ? 1058 os_strdup(hapd->conf->model_name) : NULL; 1059 wps->dev.model_number = hapd->conf->model_number ? 1060 os_strdup(hapd->conf->model_number) : NULL; 1061 wps->dev.serial_number = hapd->conf->serial_number ? 1062 os_strdup(hapd->conf->serial_number) : NULL; 1063 wps->config_methods = 1064 wps_config_methods_str2bin(hapd->conf->config_methods); 1065#ifdef CONFIG_WPS2 1066 if ((wps->config_methods & 1067 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY | 1068 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) { 1069 wpa_printf(MSG_INFO, "WPS: Converting display to " 1070 "virtual_display for WPS 2.0 compliance"); 1071 wps->config_methods |= WPS_CONFIG_VIRT_DISPLAY; 1072 } 1073 if ((wps->config_methods & 1074 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON | 1075 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) { 1076 wpa_printf(MSG_INFO, "WPS: Converting push_button to " 1077 "virtual_push_button for WPS 2.0 compliance"); 1078 wps->config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON; 1079 } 1080#endif /* CONFIG_WPS2 */ 1081 os_memcpy(wps->dev.pri_dev_type, hapd->conf->device_type, 1082 WPS_DEV_TYPE_LEN); 1083 1084 if (hostapd_wps_set_vendor_ext(hapd, wps) < 0) 1085 goto fail; 1086 1087 wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version); 1088 1089 if (conf->wps_rf_bands) { 1090 wps->dev.rf_bands = conf->wps_rf_bands; 1091 } else { 1092 wps->dev.rf_bands = 1093 hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ? 1094 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */ 1095 } 1096 1097 if (conf->wpa & WPA_PROTO_RSN) { 1098 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) 1099 wps->auth_types |= WPS_AUTH_WPA2PSK; 1100 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) 1101 wps->auth_types |= WPS_AUTH_WPA2; 1102 1103 if (conf->rsn_pairwise & WPA_CIPHER_CCMP) 1104 wps->encr_types |= WPS_ENCR_AES; 1105 if (conf->rsn_pairwise & WPA_CIPHER_TKIP) 1106 wps->encr_types |= WPS_ENCR_TKIP; 1107 } 1108 1109 if (conf->wpa & WPA_PROTO_WPA) { 1110 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) 1111 wps->auth_types |= WPS_AUTH_WPAPSK; 1112 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) 1113 wps->auth_types |= WPS_AUTH_WPA; 1114 1115 if (conf->wpa_pairwise & WPA_CIPHER_CCMP) 1116 wps->encr_types |= WPS_ENCR_AES; 1117 if (conf->wpa_pairwise & WPA_CIPHER_TKIP) 1118 wps->encr_types |= WPS_ENCR_TKIP; 1119 } 1120 1121 if (conf->ssid.security_policy == SECURITY_PLAINTEXT) { 1122 wps->encr_types |= WPS_ENCR_NONE; 1123 wps->auth_types |= WPS_AUTH_OPEN; 1124 } else if (conf->ssid.security_policy == SECURITY_STATIC_WEP) { 1125 wps->encr_types |= WPS_ENCR_WEP; 1126 if (conf->auth_algs & WPA_AUTH_ALG_OPEN) 1127 wps->auth_types |= WPS_AUTH_OPEN; 1128 if (conf->auth_algs & WPA_AUTH_ALG_SHARED) 1129 wps->auth_types |= WPS_AUTH_SHARED; 1130 } else if (conf->ssid.security_policy == SECURITY_IEEE_802_1X) { 1131 wps->auth_types |= WPS_AUTH_OPEN; 1132 if (conf->default_wep_key_len) 1133 wps->encr_types |= WPS_ENCR_WEP; 1134 else 1135 wps->encr_types |= WPS_ENCR_NONE; 1136 } 1137 1138 if (conf->ssid.wpa_psk_file) { 1139 /* Use per-device PSKs */ 1140 } else if (conf->ssid.wpa_passphrase) { 1141 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase); 1142 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase); 1143 } else if (conf->ssid.wpa_psk) { 1144 wps->network_key = os_malloc(2 * PMK_LEN + 1); 1145 if (wps->network_key == NULL) 1146 goto fail; 1147 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1, 1148 conf->ssid.wpa_psk->psk, PMK_LEN); 1149 wps->network_key_len = 2 * PMK_LEN; 1150 } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) { 1151 wps->network_key = os_malloc(conf->ssid.wep.len[0]); 1152 if (wps->network_key == NULL) 1153 goto fail; 1154 os_memcpy(wps->network_key, conf->ssid.wep.key[0], 1155 conf->ssid.wep.len[0]); 1156 wps->network_key_len = conf->ssid.wep.len[0]; 1157 } 1158 1159 if (conf->ssid.wpa_psk) { 1160 os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN); 1161 wps->psk_set = 1; 1162 } 1163 1164 wps->ap_auth_type = wps->auth_types; 1165 wps->ap_encr_type = wps->encr_types; 1166 if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) { 1167 /* Override parameters to enable security by default */ 1168 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK; 1169 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP; 1170 } 1171 1172 wps->ap_settings = conf->ap_settings; 1173 wps->ap_settings_len = conf->ap_settings_len; 1174 1175 cfg.new_psk_cb = hostapd_wps_new_psk_cb; 1176 cfg.set_ie_cb = hostapd_wps_set_ie_cb; 1177 cfg.pin_needed_cb = hostapd_wps_pin_needed_cb; 1178 cfg.reg_success_cb = hostapd_wps_reg_success_cb; 1179 cfg.enrollee_seen_cb = hostapd_wps_enrollee_seen_cb; 1180 cfg.cb_ctx = hapd; 1181 cfg.skip_cred_build = conf->skip_cred_build; 1182 cfg.extra_cred = conf->extra_cred; 1183 cfg.extra_cred_len = conf->extra_cred_len; 1184 cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) && 1185 conf->skip_cred_build; 1186 if (conf->ssid.security_policy == SECURITY_STATIC_WEP) 1187 cfg.static_wep_only = 1; 1188 cfg.dualband = interface_count(hapd->iface) > 1; 1189 if ((wps->dev.rf_bands & (WPS_RF_50GHZ | WPS_RF_24GHZ)) == 1190 (WPS_RF_50GHZ | WPS_RF_24GHZ)) 1191 cfg.dualband = 1; 1192 if (cfg.dualband) 1193 wpa_printf(MSG_DEBUG, "WPS: Dualband AP"); 1194 cfg.force_per_enrollee_psk = conf->force_per_enrollee_psk; 1195 1196 wps->registrar = wps_registrar_init(wps, &cfg); 1197 if (wps->registrar == NULL) { 1198 wpa_printf(MSG_ERROR, "Failed to initialize WPS Registrar"); 1199 goto fail; 1200 } 1201 1202#ifdef CONFIG_WPS_UPNP 1203 wps->friendly_name = hapd->conf->friendly_name; 1204 wps->manufacturer_url = hapd->conf->manufacturer_url; 1205 wps->model_description = hapd->conf->model_description; 1206 wps->model_url = hapd->conf->model_url; 1207 wps->upc = hapd->conf->upc; 1208#endif /* CONFIG_WPS_UPNP */ 1209 1210 hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd); 1211 1212 hapd->wps = wps; 1213 1214 return 0; 1215 1216fail: 1217 hostapd_free_wps(wps); 1218 return -1; 1219} 1220 1221 1222int hostapd_init_wps_complete(struct hostapd_data *hapd) 1223{ 1224 struct wps_context *wps = hapd->wps; 1225 1226 if (wps == NULL) 1227 return 0; 1228 1229#ifdef CONFIG_WPS_UPNP 1230 if (hostapd_wps_upnp_init(hapd, wps) < 0) { 1231 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP"); 1232 wps_registrar_deinit(wps->registrar); 1233 hostapd_free_wps(wps); 1234 hapd->wps = NULL; 1235 return -1; 1236 } 1237#endif /* CONFIG_WPS_UPNP */ 1238 1239 return 0; 1240} 1241 1242 1243static void hostapd_wps_nfc_clear(struct wps_context *wps) 1244{ 1245#ifdef CONFIG_WPS_NFC 1246 wpa_printf(MSG_DEBUG, "WPS: Clear NFC Tag context %p", wps); 1247 wps->ap_nfc_dev_pw_id = 0; 1248 wpabuf_free(wps->ap_nfc_dh_pubkey); 1249 wps->ap_nfc_dh_pubkey = NULL; 1250 wpabuf_free(wps->ap_nfc_dh_privkey); 1251 wps->ap_nfc_dh_privkey = NULL; 1252 wpabuf_free(wps->ap_nfc_dev_pw); 1253 wps->ap_nfc_dev_pw = NULL; 1254#endif /* CONFIG_WPS_NFC */ 1255} 1256 1257 1258void hostapd_deinit_wps(struct hostapd_data *hapd) 1259{ 1260 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 1261 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1262 eloop_cancel_timeout(wps_reload_config, hapd->iface, NULL); 1263 if (hapd->wps == NULL) { 1264 hostapd_wps_clear_ies(hapd, 1); 1265 return; 1266 } 1267#ifdef CONFIG_WPS_UPNP 1268 hostapd_wps_upnp_deinit(hapd); 1269#endif /* CONFIG_WPS_UPNP */ 1270 wps_registrar_deinit(hapd->wps->registrar); 1271 wps_free_pending_msgs(hapd->wps->upnp_msgs); 1272 hostapd_free_wps(hapd->wps); 1273 hapd->wps = NULL; 1274 hostapd_wps_clear_ies(hapd, 1); 1275} 1276 1277 1278void hostapd_update_wps(struct hostapd_data *hapd) 1279{ 1280 if (hapd->wps == NULL) 1281 return; 1282 1283#ifdef CONFIG_WPS_UPNP 1284 hapd->wps->friendly_name = hapd->conf->friendly_name; 1285 hapd->wps->manufacturer_url = hapd->conf->manufacturer_url; 1286 hapd->wps->model_description = hapd->conf->model_description; 1287 hapd->wps->model_url = hapd->conf->model_url; 1288 hapd->wps->upc = hapd->conf->upc; 1289#endif /* CONFIG_WPS_UPNP */ 1290 1291 hostapd_wps_set_vendor_ext(hapd, hapd->wps); 1292 1293 if (hapd->conf->wps_state) 1294 wps_registrar_update_ie(hapd->wps->registrar); 1295 else 1296 hostapd_deinit_wps(hapd); 1297} 1298 1299 1300struct wps_add_pin_data { 1301 const u8 *addr; 1302 const u8 *uuid; 1303 const u8 *pin; 1304 size_t pin_len; 1305 int timeout; 1306 int added; 1307}; 1308 1309 1310static int wps_add_pin(struct hostapd_data *hapd, void *ctx) 1311{ 1312 struct wps_add_pin_data *data = ctx; 1313 int ret; 1314 1315 if (hapd->wps == NULL) 1316 return 0; 1317 ret = wps_registrar_add_pin(hapd->wps->registrar, data->addr, 1318 data->uuid, data->pin, data->pin_len, 1319 data->timeout); 1320 if (ret == 0) 1321 data->added++; 1322 return ret; 1323} 1324 1325 1326int hostapd_wps_add_pin(struct hostapd_data *hapd, const u8 *addr, 1327 const char *uuid, const char *pin, int timeout) 1328{ 1329 u8 u[UUID_LEN]; 1330 struct wps_add_pin_data data; 1331 1332 data.addr = addr; 1333 data.uuid = u; 1334 data.pin = (const u8 *) pin; 1335 data.pin_len = os_strlen(pin); 1336 data.timeout = timeout; 1337 data.added = 0; 1338 1339 if (os_strcmp(uuid, "any") == 0) 1340 data.uuid = NULL; 1341 else { 1342 if (uuid_str2bin(uuid, u)) 1343 return -1; 1344 data.uuid = u; 1345 } 1346 if (hostapd_wps_for_each(hapd, wps_add_pin, &data) < 0) 1347 return -1; 1348 return data.added ? 0 : -1; 1349} 1350 1351 1352static int wps_button_pushed(struct hostapd_data *hapd, void *ctx) 1353{ 1354 const u8 *p2p_dev_addr = ctx; 1355 if (hapd->wps == NULL) 1356 return 0; 1357 return wps_registrar_button_pushed(hapd->wps->registrar, p2p_dev_addr); 1358} 1359 1360 1361int hostapd_wps_button_pushed(struct hostapd_data *hapd, 1362 const u8 *p2p_dev_addr) 1363{ 1364 return hostapd_wps_for_each(hapd, wps_button_pushed, 1365 (void *) p2p_dev_addr); 1366} 1367 1368 1369static int wps_cancel(struct hostapd_data *hapd, void *ctx) 1370{ 1371 if (hapd->wps == NULL) 1372 return 0; 1373 1374 wps_registrar_wps_cancel(hapd->wps->registrar); 1375 ap_for_each_sta(hapd, ap_sta_wps_cancel, NULL); 1376 1377 return 0; 1378} 1379 1380 1381int hostapd_wps_cancel(struct hostapd_data *hapd) 1382{ 1383 return hostapd_wps_for_each(hapd, wps_cancel, NULL); 1384} 1385 1386 1387static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da, 1388 const u8 *bssid, 1389 const u8 *ie, size_t ie_len, 1390 int ssi_signal) 1391{ 1392 struct hostapd_data *hapd = ctx; 1393 struct wpabuf *wps_ie; 1394 struct ieee802_11_elems elems; 1395 1396 if (hapd->wps == NULL) 1397 return 0; 1398 1399 if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) { 1400 wpa_printf(MSG_DEBUG, "WPS: Could not parse ProbeReq from " 1401 MACSTR, MAC2STR(addr)); 1402 return 0; 1403 } 1404 1405 if (elems.ssid && elems.ssid_len > 0 && 1406 (elems.ssid_len != hapd->conf->ssid.ssid_len || 1407 os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) != 1408 0)) 1409 return 0; /* Not for us */ 1410 1411 wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA); 1412 if (wps_ie == NULL) 1413 return 0; 1414 if (wps_validate_probe_req(wps_ie, addr) < 0) { 1415 wpabuf_free(wps_ie); 1416 return 0; 1417 } 1418 1419 if (wpabuf_len(wps_ie) > 0) { 1420 int p2p_wildcard = 0; 1421#ifdef CONFIG_P2P 1422 if (elems.ssid && elems.ssid_len == P2P_WILDCARD_SSID_LEN && 1423 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, 1424 P2P_WILDCARD_SSID_LEN) == 0) 1425 p2p_wildcard = 1; 1426#endif /* CONFIG_P2P */ 1427 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie, 1428 p2p_wildcard); 1429#ifdef CONFIG_WPS_UPNP 1430 /* FIX: what exactly should be included in the WLANEvent? 1431 * WPS attributes? Full ProbeReq frame? */ 1432 if (!p2p_wildcard) 1433 upnp_wps_device_send_wlan_event( 1434 hapd->wps_upnp, addr, 1435 UPNP_WPS_WLANEVENT_TYPE_PROBE, wps_ie); 1436#endif /* CONFIG_WPS_UPNP */ 1437 } 1438 1439 wpabuf_free(wps_ie); 1440 1441 return 0; 1442} 1443 1444 1445#ifdef CONFIG_WPS_UPNP 1446 1447static int hostapd_rx_req_put_wlan_response( 1448 void *priv, enum upnp_wps_wlanevent_type ev_type, 1449 const u8 *mac_addr, const struct wpabuf *msg, 1450 enum wps_msg_type msg_type) 1451{ 1452 struct hostapd_data *hapd = priv; 1453 struct sta_info *sta; 1454 struct upnp_pending_message *p; 1455 1456 wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr=" 1457 MACSTR, ev_type, MAC2STR(mac_addr)); 1458 wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage", 1459 wpabuf_head(msg), wpabuf_len(msg)); 1460 if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) { 1461 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected " 1462 "PutWLANResponse WLANEventType %d", ev_type); 1463 return -1; 1464 } 1465 1466 /* 1467 * EAP response to ongoing to WPS Registration. Send it to EAP-WSC 1468 * server implementation for delivery to the peer. 1469 */ 1470 1471 sta = ap_get_sta(hapd, mac_addr); 1472#ifndef CONFIG_WPS_STRICT 1473 if (!sta) { 1474 /* 1475 * Workaround - Intel wsccmd uses bogus NewWLANEventMAC: 1476 * Pick STA that is in an ongoing WPS registration without 1477 * checking the MAC address. 1478 */ 1479 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based " 1480 "on NewWLANEventMAC; try wildcard match"); 1481 for (sta = hapd->sta_list; sta; sta = sta->next) { 1482 if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS)) 1483 break; 1484 } 1485 } 1486#endif /* CONFIG_WPS_STRICT */ 1487 1488 if (!sta || !(sta->flags & WLAN_STA_WPS)) { 1489 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found"); 1490 return 0; 1491 } 1492 1493 if (!sta->eapol_sm) { 1494 /* 1495 * This can happen, e.g., if an ER sends an extra message after 1496 * the station has disassociated (but not fully 1497 * deauthenticated). 1498 */ 1499 wpa_printf(MSG_DEBUG, "WPS UPnP: Matching STA did not have EAPOL state machine initialized"); 1500 return 0; 1501 } 1502 1503 p = os_zalloc(sizeof(*p)); 1504 if (p == NULL) 1505 return -1; 1506 os_memcpy(p->addr, sta->addr, ETH_ALEN); 1507 p->msg = wpabuf_dup(msg); 1508 p->type = msg_type; 1509 p->next = hapd->wps->upnp_msgs; 1510 hapd->wps->upnp_msgs = p; 1511 1512 return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap); 1513} 1514 1515 1516static int hostapd_wps_upnp_init(struct hostapd_data *hapd, 1517 struct wps_context *wps) 1518{ 1519 struct upnp_wps_device_ctx *ctx; 1520 1521 if (!hapd->conf->upnp_iface) 1522 return 0; 1523 ctx = os_zalloc(sizeof(*ctx)); 1524 if (ctx == NULL) 1525 return -1; 1526 1527 ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response; 1528 if (hapd->conf->ap_pin) 1529 ctx->ap_pin = os_strdup(hapd->conf->ap_pin); 1530 1531 hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd, 1532 hapd->conf->upnp_iface); 1533 if (hapd->wps_upnp == NULL) 1534 return -1; 1535 wps->wps_upnp = hapd->wps_upnp; 1536 1537 return 0; 1538} 1539 1540 1541static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd) 1542{ 1543 upnp_wps_device_deinit(hapd->wps_upnp, hapd); 1544} 1545 1546#endif /* CONFIG_WPS_UPNP */ 1547 1548 1549int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr, 1550 char *buf, size_t buflen) 1551{ 1552 if (hapd->wps == NULL) 1553 return 0; 1554 return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen); 1555} 1556 1557 1558static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx) 1559{ 1560 struct hostapd_data *hapd = eloop_data; 1561 wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out"); 1562 hostapd_wps_ap_pin_disable(hapd); 1563 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_PIN_DISABLED); 1564} 1565 1566 1567static void hostapd_wps_ap_pin_enable(struct hostapd_data *hapd, int timeout) 1568{ 1569 wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout); 1570 hapd->ap_pin_failures = 0; 1571 hapd->ap_pin_failures_consecutive = 0; 1572 hapd->conf->ap_setup_locked = 0; 1573 if (hapd->wps->ap_setup_locked) { 1574 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED); 1575 hapd->wps->ap_setup_locked = 0; 1576 wps_registrar_update_ie(hapd->wps->registrar); 1577 } 1578 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1579 if (timeout > 0) 1580 eloop_register_timeout(timeout, 0, 1581 hostapd_wps_ap_pin_timeout, hapd, NULL); 1582} 1583 1584 1585static int wps_ap_pin_disable(struct hostapd_data *hapd, void *ctx) 1586{ 1587 os_free(hapd->conf->ap_pin); 1588 hapd->conf->ap_pin = NULL; 1589#ifdef CONFIG_WPS_UPNP 1590 upnp_wps_set_ap_pin(hapd->wps_upnp, NULL); 1591#endif /* CONFIG_WPS_UPNP */ 1592 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1593 return 0; 1594} 1595 1596 1597void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd) 1598{ 1599 wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN"); 1600 hostapd_wps_for_each(hapd, wps_ap_pin_disable, NULL); 1601} 1602 1603 1604struct wps_ap_pin_data { 1605 char pin_txt[9]; 1606 int timeout; 1607}; 1608 1609 1610static int wps_ap_pin_set(struct hostapd_data *hapd, void *ctx) 1611{ 1612 struct wps_ap_pin_data *data = ctx; 1613 os_free(hapd->conf->ap_pin); 1614 hapd->conf->ap_pin = os_strdup(data->pin_txt); 1615#ifdef CONFIG_WPS_UPNP 1616 upnp_wps_set_ap_pin(hapd->wps_upnp, data->pin_txt); 1617#endif /* CONFIG_WPS_UPNP */ 1618 hostapd_wps_ap_pin_enable(hapd, data->timeout); 1619 return 0; 1620} 1621 1622 1623const char * hostapd_wps_ap_pin_random(struct hostapd_data *hapd, int timeout) 1624{ 1625 unsigned int pin; 1626 struct wps_ap_pin_data data; 1627 1628 pin = wps_generate_pin(); 1629 os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%08u", pin); 1630 data.timeout = timeout; 1631 hostapd_wps_for_each(hapd, wps_ap_pin_set, &data); 1632 return hapd->conf->ap_pin; 1633} 1634 1635 1636const char * hostapd_wps_ap_pin_get(struct hostapd_data *hapd) 1637{ 1638 return hapd->conf->ap_pin; 1639} 1640 1641 1642int hostapd_wps_ap_pin_set(struct hostapd_data *hapd, const char *pin, 1643 int timeout) 1644{ 1645 struct wps_ap_pin_data data; 1646 int ret; 1647 1648 ret = os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%s", pin); 1649 if (ret < 0 || ret >= (int) sizeof(data.pin_txt)) 1650 return -1; 1651 data.timeout = timeout; 1652 return hostapd_wps_for_each(hapd, wps_ap_pin_set, &data); 1653} 1654 1655 1656static int wps_update_ie(struct hostapd_data *hapd, void *ctx) 1657{ 1658 if (hapd->wps) 1659 wps_registrar_update_ie(hapd->wps->registrar); 1660 return 0; 1661} 1662 1663 1664void hostapd_wps_update_ie(struct hostapd_data *hapd) 1665{ 1666 hostapd_wps_for_each(hapd, wps_update_ie, NULL); 1667} 1668 1669 1670int hostapd_wps_config_ap(struct hostapd_data *hapd, const char *ssid, 1671 const char *auth, const char *encr, const char *key) 1672{ 1673 struct wps_credential cred; 1674 size_t len; 1675 1676 os_memset(&cred, 0, sizeof(cred)); 1677 1678 len = os_strlen(ssid); 1679 if ((len & 1) || len > 2 * sizeof(cred.ssid) || 1680 hexstr2bin(ssid, cred.ssid, len / 2)) 1681 return -1; 1682 cred.ssid_len = len / 2; 1683 1684 if (os_strncmp(auth, "OPEN", 4) == 0) 1685 cred.auth_type = WPS_AUTH_OPEN; 1686 else if (os_strncmp(auth, "WPAPSK", 6) == 0) 1687 cred.auth_type = WPS_AUTH_WPAPSK; 1688 else if (os_strncmp(auth, "WPA2PSK", 7) == 0) 1689 cred.auth_type = WPS_AUTH_WPA2PSK; 1690 else 1691 return -1; 1692 1693 if (encr) { 1694 if (os_strncmp(encr, "NONE", 4) == 0) 1695 cred.encr_type = WPS_ENCR_NONE; 1696 else if (os_strncmp(encr, "WEP", 3) == 0) 1697 cred.encr_type = WPS_ENCR_WEP; 1698 else if (os_strncmp(encr, "TKIP", 4) == 0) 1699 cred.encr_type = WPS_ENCR_TKIP; 1700 else if (os_strncmp(encr, "CCMP", 4) == 0) 1701 cred.encr_type = WPS_ENCR_AES; 1702 else 1703 return -1; 1704 } else 1705 cred.encr_type = WPS_ENCR_NONE; 1706 1707 if (key) { 1708 len = os_strlen(key); 1709 if ((len & 1) || len > 2 * sizeof(cred.key) || 1710 hexstr2bin(key, cred.key, len / 2)) 1711 return -1; 1712 cred.key_len = len / 2; 1713 } 1714 1715 return wps_registrar_config_ap(hapd->wps->registrar, &cred); 1716} 1717 1718 1719#ifdef CONFIG_WPS_NFC 1720 1721struct wps_nfc_password_token_data { 1722 const u8 *oob_dev_pw; 1723 size_t oob_dev_pw_len; 1724 int added; 1725}; 1726 1727 1728static int wps_add_nfc_password_token(struct hostapd_data *hapd, void *ctx) 1729{ 1730 struct wps_nfc_password_token_data *data = ctx; 1731 int ret; 1732 1733 if (hapd->wps == NULL) 1734 return 0; 1735 ret = wps_registrar_add_nfc_password_token(hapd->wps->registrar, 1736 data->oob_dev_pw, 1737 data->oob_dev_pw_len); 1738 if (ret == 0) 1739 data->added++; 1740 return ret; 1741} 1742 1743 1744static int hostapd_wps_add_nfc_password_token(struct hostapd_data *hapd, 1745 struct wps_parse_attr *attr) 1746{ 1747 struct wps_nfc_password_token_data data; 1748 1749 data.oob_dev_pw = attr->oob_dev_password; 1750 data.oob_dev_pw_len = attr->oob_dev_password_len; 1751 data.added = 0; 1752 if (hostapd_wps_for_each(hapd, wps_add_nfc_password_token, &data) < 0) 1753 return -1; 1754 return data.added ? 0 : -1; 1755} 1756 1757 1758static int hostapd_wps_nfc_tag_process(struct hostapd_data *hapd, 1759 const struct wpabuf *wps) 1760{ 1761 struct wps_parse_attr attr; 1762 1763 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps); 1764 1765 if (wps_parse_msg(wps, &attr)) { 1766 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag"); 1767 return -1; 1768 } 1769 1770 if (attr.oob_dev_password) 1771 return hostapd_wps_add_nfc_password_token(hapd, &attr); 1772 1773 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag"); 1774 return -1; 1775} 1776 1777 1778int hostapd_wps_nfc_tag_read(struct hostapd_data *hapd, 1779 const struct wpabuf *data) 1780{ 1781 const struct wpabuf *wps = data; 1782 struct wpabuf *tmp = NULL; 1783 int ret; 1784 1785 if (wpabuf_len(data) < 4) 1786 return -1; 1787 1788 if (*wpabuf_head_u8(data) != 0x10) { 1789 /* Assume this contains full NDEF record */ 1790 tmp = ndef_parse_wifi(data); 1791 if (tmp == NULL) { 1792 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF"); 1793 return -1; 1794 } 1795 wps = tmp; 1796 } 1797 1798 ret = hostapd_wps_nfc_tag_process(hapd, wps); 1799 wpabuf_free(tmp); 1800 return ret; 1801} 1802 1803 1804struct wpabuf * hostapd_wps_nfc_config_token(struct hostapd_data *hapd, 1805 int ndef) 1806{ 1807 struct wpabuf *ret; 1808 1809 if (hapd->wps == NULL) 1810 return NULL; 1811 1812 ret = wps_get_oob_cred(hapd->wps, hostapd_wps_rf_band_cb(hapd), 1813 hapd->iconf->channel); 1814 if (ndef && ret) { 1815 struct wpabuf *tmp; 1816 tmp = ndef_build_wifi(ret); 1817 wpabuf_free(ret); 1818 if (tmp == NULL) 1819 return NULL; 1820 ret = tmp; 1821 } 1822 1823 return ret; 1824} 1825 1826 1827struct wpabuf * hostapd_wps_nfc_hs_cr(struct hostapd_data *hapd, int ndef) 1828{ 1829 struct wpabuf *ret; 1830 1831 if (hapd->wps == NULL) 1832 return NULL; 1833 1834 if (hapd->conf->wps_nfc_dh_pubkey == NULL) { 1835 struct wps_context *wps = hapd->wps; 1836 if (wps_nfc_gen_dh(&hapd->conf->wps_nfc_dh_pubkey, 1837 &hapd->conf->wps_nfc_dh_privkey) < 0) 1838 return NULL; 1839 hostapd_wps_nfc_clear(wps); 1840 wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER; 1841 wps->ap_nfc_dh_pubkey = 1842 wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey); 1843 wps->ap_nfc_dh_privkey = 1844 wpabuf_dup(hapd->conf->wps_nfc_dh_privkey); 1845 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) { 1846 hostapd_wps_nfc_clear(wps); 1847 return NULL; 1848 } 1849 } 1850 1851 ret = wps_build_nfc_handover_sel(hapd->wps, 1852 hapd->conf->wps_nfc_dh_pubkey, 1853 hapd->own_addr, hapd->iface->freq); 1854 1855 if (ndef && ret) { 1856 struct wpabuf *tmp; 1857 tmp = ndef_build_wifi(ret); 1858 wpabuf_free(ret); 1859 if (tmp == NULL) 1860 return NULL; 1861 ret = tmp; 1862 } 1863 1864 return ret; 1865} 1866 1867 1868int hostapd_wps_nfc_report_handover(struct hostapd_data *hapd, 1869 const struct wpabuf *req, 1870 const struct wpabuf *sel) 1871{ 1872 struct wpabuf *wps; 1873 int ret = -1; 1874 u16 wsc_len; 1875 const u8 *pos; 1876 struct wpabuf msg; 1877 struct wps_parse_attr attr; 1878 u16 dev_pw_id; 1879 1880 /* 1881 * Enrollee/station is always initiator of the NFC connection handover, 1882 * so use the request message here to find Enrollee public key hash. 1883 */ 1884 wps = ndef_parse_wifi(req); 1885 if (wps == NULL) 1886 return -1; 1887 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc " 1888 "payload from NFC connection handover"); 1889 wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps); 1890 if (wpabuf_len(wps) < 2) { 1891 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request " 1892 "Message"); 1893 goto out; 1894 } 1895 pos = wpabuf_head(wps); 1896 wsc_len = WPA_GET_BE16(pos); 1897 if (wsc_len > wpabuf_len(wps) - 2) { 1898 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) " 1899 "in rt Wi-Fi Handover Request Message", wsc_len); 1900 goto out; 1901 } 1902 pos += 2; 1903 1904 wpa_hexdump(MSG_DEBUG, 1905 "WPS: WSC attributes in Wi-Fi Handover Request Message", 1906 pos, wsc_len); 1907 if (wsc_len < wpabuf_len(wps) - 2) { 1908 wpa_hexdump(MSG_DEBUG, 1909 "WPS: Ignore extra data after WSC attributes", 1910 pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len); 1911 } 1912 1913 wpabuf_set(&msg, pos, wsc_len); 1914 ret = wps_parse_msg(&msg, &attr); 1915 if (ret < 0) { 1916 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in " 1917 "Wi-Fi Handover Request Message"); 1918 goto out; 1919 } 1920 1921 if (attr.oob_dev_password == NULL || 1922 attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) { 1923 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password " 1924 "included in Wi-Fi Handover Request Message"); 1925 ret = -1; 1926 goto out; 1927 } 1928 1929 if (attr.uuid_e == NULL) { 1930 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi " 1931 "Handover Request Message"); 1932 ret = -1; 1933 goto out; 1934 } 1935 1936 wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN); 1937 1938 wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password", 1939 attr.oob_dev_password, attr.oob_dev_password_len); 1940 dev_pw_id = WPA_GET_BE16(attr.oob_dev_password + 1941 WPS_OOB_PUBKEY_HASH_LEN); 1942 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) { 1943 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID " 1944 "%u in Wi-Fi Handover Request Message", dev_pw_id); 1945 ret = -1; 1946 goto out; 1947 } 1948 wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash", 1949 attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN); 1950 1951 ret = wps_registrar_add_nfc_pw_token(hapd->wps->registrar, 1952 attr.oob_dev_password, 1953 DEV_PW_NFC_CONNECTION_HANDOVER, 1954 NULL, 0, 1); 1955 1956out: 1957 wpabuf_free(wps); 1958 return ret; 1959} 1960 1961 1962struct wpabuf * hostapd_wps_nfc_token_gen(struct hostapd_data *hapd, int ndef) 1963{ 1964 if (hapd->conf->wps_nfc_pw_from_config) { 1965 return wps_nfc_token_build(ndef, 1966 hapd->conf->wps_nfc_dev_pw_id, 1967 hapd->conf->wps_nfc_dh_pubkey, 1968 hapd->conf->wps_nfc_dev_pw); 1969 } 1970 1971 return wps_nfc_token_gen(ndef, &hapd->conf->wps_nfc_dev_pw_id, 1972 &hapd->conf->wps_nfc_dh_pubkey, 1973 &hapd->conf->wps_nfc_dh_privkey, 1974 &hapd->conf->wps_nfc_dev_pw); 1975} 1976 1977 1978int hostapd_wps_nfc_token_enable(struct hostapd_data *hapd) 1979{ 1980 struct wps_context *wps = hapd->wps; 1981 struct wpabuf *pw; 1982 1983 if (wps == NULL) 1984 return -1; 1985 1986 if (!hapd->conf->wps_nfc_dh_pubkey || 1987 !hapd->conf->wps_nfc_dh_privkey || 1988 !hapd->conf->wps_nfc_dev_pw || 1989 !hapd->conf->wps_nfc_dev_pw_id) 1990 return -1; 1991 1992 hostapd_wps_nfc_clear(wps); 1993 wpa_printf(MSG_DEBUG, 1994 "WPS: Enable NFC Tag (Dev Pw Id %u) for AP interface %s (context %p)", 1995 hapd->conf->wps_nfc_dev_pw_id, hapd->conf->iface, wps); 1996 wps->ap_nfc_dev_pw_id = hapd->conf->wps_nfc_dev_pw_id; 1997 wps->ap_nfc_dh_pubkey = wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey); 1998 wps->ap_nfc_dh_privkey = wpabuf_dup(hapd->conf->wps_nfc_dh_privkey); 1999 pw = hapd->conf->wps_nfc_dev_pw; 2000 wps->ap_nfc_dev_pw = wpabuf_alloc( 2001 wpabuf_len(pw) * 2 + 1); 2002 if (wps->ap_nfc_dev_pw) { 2003 wpa_snprintf_hex_uppercase( 2004 (char *) wpabuf_put(wps->ap_nfc_dev_pw, 2005 wpabuf_len(pw) * 2), 2006 wpabuf_len(pw) * 2 + 1, 2007 wpabuf_head(pw), wpabuf_len(pw)); 2008 } 2009 2010 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey || 2011 !wps->ap_nfc_dev_pw) { 2012 hostapd_wps_nfc_clear(wps); 2013 return -1; 2014 } 2015 2016 return 0; 2017} 2018 2019 2020void hostapd_wps_nfc_token_disable(struct hostapd_data *hapd) 2021{ 2022 wpa_printf(MSG_DEBUG, "WPS: Disable NFC token for AP interface %s", 2023 hapd->conf->iface); 2024 hostapd_wps_nfc_clear(hapd->wps); 2025} 2026 2027#endif /* CONFIG_WPS_NFC */ 2028