wps_hostapd.c revision 289549
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 if (hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD) 352 bss->wpa_pairwise |= WPA_CIPHER_GCMP; 353 else 354 bss->wpa_pairwise |= WPA_CIPHER_CCMP; 355 } 356 if (cred->encr_type & WPS_ENCR_TKIP) 357 bss->wpa_pairwise |= WPA_CIPHER_TKIP; 358 bss->rsn_pairwise = bss->wpa_pairwise; 359 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, 360 bss->wpa_pairwise, 361 bss->rsn_pairwise); 362 363 if (cred->key_len >= 8 && cred->key_len < 64) { 364 os_free(bss->ssid.wpa_passphrase); 365 bss->ssid.wpa_passphrase = os_zalloc(cred->key_len + 1); 366 if (bss->ssid.wpa_passphrase) 367 os_memcpy(bss->ssid.wpa_passphrase, cred->key, 368 cred->key_len); 369 hostapd_config_clear_wpa_psk(&bss->ssid.wpa_psk); 370 } else if (cred->key_len == 64) { 371 hostapd_config_clear_wpa_psk(&bss->ssid.wpa_psk); 372 bss->ssid.wpa_psk = 373 os_zalloc(sizeof(struct hostapd_wpa_psk)); 374 if (bss->ssid.wpa_psk && 375 hexstr2bin((const char *) cred->key, 376 bss->ssid.wpa_psk->psk, PMK_LEN) == 0) { 377 bss->ssid.wpa_psk->group = 1; 378 os_free(bss->ssid.wpa_passphrase); 379 bss->ssid.wpa_passphrase = NULL; 380 } 381 } 382 bss->auth_algs = 1; 383 } else { 384 /* 385 * WPS 2.0 does not allow WEP to be configured, so no need to 386 * process that option here either. 387 */ 388 bss->auth_algs = 1; 389 } 390 391 /* Schedule configuration reload after short period of time to allow 392 * EAP-WSC to be finished. 393 */ 394 eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface, 395 NULL); 396 397 return 0; 398} 399 400 401static int hapd_wps_cred_cb(struct hostapd_data *hapd, void *ctx) 402{ 403 const struct wps_credential *cred = ctx; 404 FILE *oconf, *nconf; 405 size_t len, i; 406 char *tmp_fname; 407 char buf[1024]; 408 int multi_bss; 409 int wpa; 410 411 if (hapd->wps == NULL) 412 return 0; 413 414 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute", 415 cred->cred_attr, cred->cred_attr_len); 416 417 wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings"); 418 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len); 419 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x", 420 cred->auth_type); 421 wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type); 422 wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx); 423 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key", 424 cred->key, cred->key_len); 425 wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR, 426 MAC2STR(cred->mac_addr)); 427 428 if ((hapd->conf->wps_cred_processing == 1 || 429 hapd->conf->wps_cred_processing == 2) && cred->cred_attr) { 430 hapd_new_ap_event(hapd, cred->cred_attr, cred->cred_attr_len); 431 } else if (hapd->conf->wps_cred_processing == 1 || 432 hapd->conf->wps_cred_processing == 2) { 433 struct wpabuf *attr; 434 attr = wpabuf_alloc(200); 435 if (attr && wps_build_credential_wrap(attr, cred) == 0) 436 hapd_new_ap_event(hapd, wpabuf_head_u8(attr), 437 wpabuf_len(attr)); 438 wpabuf_free(attr); 439 } else 440 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS); 441 442 if (hapd->conf->wps_cred_processing == 1) 443 return 0; 444 445 os_memcpy(hapd->wps->ssid, cred->ssid, cred->ssid_len); 446 hapd->wps->ssid_len = cred->ssid_len; 447 hapd->wps->encr_types = cred->encr_type; 448 hapd->wps->auth_types = cred->auth_type; 449 hapd->wps->ap_encr_type = cred->encr_type; 450 hapd->wps->ap_auth_type = cred->auth_type; 451 if (cred->key_len == 0) { 452 os_free(hapd->wps->network_key); 453 hapd->wps->network_key = NULL; 454 hapd->wps->network_key_len = 0; 455 } else if ((cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK)) && 456 (cred->key_len < 8 || cred->key_len > 2 * PMK_LEN)) { 457 wpa_printf(MSG_INFO, "WPS: Invalid key length %lu for WPA/WPA2", 458 (unsigned long) cred->key_len); 459 return -1; 460 } else { 461 if (hapd->wps->network_key == NULL || 462 hapd->wps->network_key_len < cred->key_len) { 463 hapd->wps->network_key_len = 0; 464 os_free(hapd->wps->network_key); 465 hapd->wps->network_key = os_malloc(cred->key_len); 466 if (hapd->wps->network_key == NULL) 467 return -1; 468 } 469 hapd->wps->network_key_len = cred->key_len; 470 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len); 471 } 472 hapd->wps->wps_state = WPS_STATE_CONFIGURED; 473 474 if (hapd->iface->config_fname == NULL) 475 return hapd_wps_reconfig_in_memory(hapd, cred); 476 len = os_strlen(hapd->iface->config_fname) + 5; 477 tmp_fname = os_malloc(len); 478 if (tmp_fname == NULL) 479 return -1; 480 os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname); 481 482 oconf = fopen(hapd->iface->config_fname, "r"); 483 if (oconf == NULL) { 484 wpa_printf(MSG_WARNING, "WPS: Could not open current " 485 "configuration file"); 486 os_free(tmp_fname); 487 return -1; 488 } 489 490 nconf = fopen(tmp_fname, "w"); 491 if (nconf == NULL) { 492 wpa_printf(MSG_WARNING, "WPS: Could not write updated " 493 "configuration file"); 494 os_free(tmp_fname); 495 fclose(oconf); 496 return -1; 497 } 498 499 fprintf(nconf, "# WPS configuration - START\n"); 500 501 fprintf(nconf, "wps_state=2\n"); 502 503 if (is_hex(cred->ssid, cred->ssid_len)) { 504 fprintf(nconf, "ssid2="); 505 for (i = 0; i < cred->ssid_len; i++) 506 fprintf(nconf, "%02x", cred->ssid[i]); 507 fprintf(nconf, "\n"); 508 } else { 509 fprintf(nconf, "ssid="); 510 for (i = 0; i < cred->ssid_len; i++) 511 fputc(cred->ssid[i], nconf); 512 fprintf(nconf, "\n"); 513 } 514 515 if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) && 516 (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))) 517 wpa = 3; 518 else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) 519 wpa = 2; 520 else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)) 521 wpa = 1; 522 else 523 wpa = 0; 524 525 if (wpa) { 526 char *prefix; 527 fprintf(nconf, "wpa=%d\n", wpa); 528 529 fprintf(nconf, "wpa_key_mgmt="); 530 prefix = ""; 531 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) { 532 fprintf(nconf, "WPA-EAP"); 533 prefix = " "; 534 } 535 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK)) 536 fprintf(nconf, "%sWPA-PSK", prefix); 537 fprintf(nconf, "\n"); 538 539 fprintf(nconf, "wpa_pairwise="); 540 prefix = ""; 541 if (cred->encr_type & WPS_ENCR_AES) { 542 if (hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD) 543 fprintf(nconf, "GCMP"); 544 else 545 fprintf(nconf, "CCMP"); 546 547 prefix = " "; 548 } 549 if (cred->encr_type & WPS_ENCR_TKIP) { 550 fprintf(nconf, "%sTKIP", prefix); 551 } 552 fprintf(nconf, "\n"); 553 554 if (cred->key_len >= 8 && cred->key_len < 64) { 555 fprintf(nconf, "wpa_passphrase="); 556 for (i = 0; i < cred->key_len; i++) 557 fputc(cred->key[i], nconf); 558 fprintf(nconf, "\n"); 559 } else if (cred->key_len == 64) { 560 fprintf(nconf, "wpa_psk="); 561 for (i = 0; i < cred->key_len; i++) 562 fputc(cred->key[i], nconf); 563 fprintf(nconf, "\n"); 564 } else { 565 wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu " 566 "for WPA/WPA2", 567 (unsigned long) cred->key_len); 568 } 569 570 fprintf(nconf, "auth_algs=1\n"); 571 } else { 572 /* 573 * WPS 2.0 does not allow WEP to be configured, so no need to 574 * process that option here either. 575 */ 576 fprintf(nconf, "auth_algs=1\n"); 577 } 578 579 fprintf(nconf, "# WPS configuration - END\n"); 580 581 multi_bss = 0; 582 while (fgets(buf, sizeof(buf), oconf)) { 583 if (os_strncmp(buf, "bss=", 4) == 0) 584 multi_bss = 1; 585 if (!multi_bss && 586 (str_starts(buf, "ssid=") || 587 str_starts(buf, "ssid2=") || 588 str_starts(buf, "auth_algs=") || 589 str_starts(buf, "wep_default_key=") || 590 str_starts(buf, "wep_key") || 591 str_starts(buf, "wps_state=") || 592 str_starts(buf, "wpa=") || 593 str_starts(buf, "wpa_psk=") || 594 str_starts(buf, "wpa_pairwise=") || 595 str_starts(buf, "rsn_pairwise=") || 596 str_starts(buf, "wpa_key_mgmt=") || 597 str_starts(buf, "wpa_passphrase="))) { 598 fprintf(nconf, "#WPS# %s", buf); 599 } else 600 fprintf(nconf, "%s", buf); 601 } 602 603 fclose(nconf); 604 fclose(oconf); 605 606 if (rename(tmp_fname, hapd->iface->config_fname) < 0) { 607 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated " 608 "configuration file: %s", strerror(errno)); 609 os_free(tmp_fname); 610 return -1; 611 } 612 613 os_free(tmp_fname); 614 615 /* Schedule configuration reload after short period of time to allow 616 * EAP-WSC to be finished. 617 */ 618 eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface, 619 NULL); 620 621 wpa_printf(MSG_DEBUG, "WPS: AP configuration updated"); 622 623 return 0; 624} 625 626 627static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred) 628{ 629 struct hostapd_data *hapd = ctx; 630 return hostapd_wps_for_each(hapd, hapd_wps_cred_cb, (void *) cred); 631} 632 633 634static void hostapd_wps_reenable_ap_pin(void *eloop_data, void *user_ctx) 635{ 636 struct hostapd_data *hapd = eloop_data; 637 638 if (hapd->conf->ap_setup_locked) 639 return; 640 if (hapd->ap_pin_failures_consecutive >= 10) 641 return; 642 643 wpa_printf(MSG_DEBUG, "WPS: Re-enable AP PIN"); 644 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED); 645 hapd->wps->ap_setup_locked = 0; 646 wps_registrar_update_ie(hapd->wps->registrar); 647} 648 649 650static int wps_pwd_auth_fail(struct hostapd_data *hapd, void *ctx) 651{ 652 struct wps_event_pwd_auth_fail *data = ctx; 653 654 if (!data->enrollee || hapd->conf->ap_pin == NULL || hapd->wps == NULL) 655 return 0; 656 657 /* 658 * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup 659 * for some time if this happens multiple times to slow down brute 660 * force attacks. 661 */ 662 hapd->ap_pin_failures++; 663 hapd->ap_pin_failures_consecutive++; 664 wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u " 665 "(%u consecutive)", 666 hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive); 667 if (hapd->ap_pin_failures < 3) 668 return 0; 669 670 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED); 671 hapd->wps->ap_setup_locked = 1; 672 673 wps_registrar_update_ie(hapd->wps->registrar); 674 675 if (!hapd->conf->ap_setup_locked && 676 hapd->ap_pin_failures_consecutive >= 10) { 677 /* 678 * In indefinite lockdown - disable automatic AP PIN 679 * reenablement. 680 */ 681 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 682 wpa_printf(MSG_DEBUG, "WPS: AP PIN disabled indefinitely"); 683 } else if (!hapd->conf->ap_setup_locked) { 684 if (hapd->ap_pin_lockout_time == 0) 685 hapd->ap_pin_lockout_time = 60; 686 else if (hapd->ap_pin_lockout_time < 365 * 24 * 60 * 60 && 687 (hapd->ap_pin_failures % 3) == 0) 688 hapd->ap_pin_lockout_time *= 2; 689 690 wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN for %u seconds", 691 hapd->ap_pin_lockout_time); 692 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 693 eloop_register_timeout(hapd->ap_pin_lockout_time, 0, 694 hostapd_wps_reenable_ap_pin, hapd, 695 NULL); 696 } 697 698 return 0; 699} 700 701 702static void hostapd_pwd_auth_fail(struct hostapd_data *hapd, 703 struct wps_event_pwd_auth_fail *data) 704{ 705 /* Update WPS Status - Authentication Failure */ 706 wpa_printf(MSG_DEBUG, "WPS: Authentication failure update"); 707 hapd->wps_stats.status = WPS_STATUS_FAILURE; 708 hapd->wps_stats.failure_reason = WPS_EI_AUTH_FAILURE; 709 os_memcpy(hapd->wps_stats.peer_addr, data->peer_macaddr, ETH_ALEN); 710 711 hostapd_wps_for_each(hapd, wps_pwd_auth_fail, data); 712} 713 714 715static int wps_ap_pin_success(struct hostapd_data *hapd, void *ctx) 716{ 717 if (hapd->conf->ap_pin == NULL || hapd->wps == NULL) 718 return 0; 719 720 if (hapd->ap_pin_failures_consecutive == 0) 721 return 0; 722 723 wpa_printf(MSG_DEBUG, "WPS: Clear consecutive AP PIN failure counter " 724 "- total validation failures %u (%u consecutive)", 725 hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive); 726 hapd->ap_pin_failures_consecutive = 0; 727 728 return 0; 729} 730 731 732static void hostapd_wps_ap_pin_success(struct hostapd_data *hapd) 733{ 734 hostapd_wps_for_each(hapd, wps_ap_pin_success, NULL); 735} 736 737 738static void hostapd_wps_event_pbc_overlap(struct hostapd_data *hapd) 739{ 740 /* Update WPS Status - PBC Overlap */ 741 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_OVERLAP; 742} 743 744 745static void hostapd_wps_event_pbc_timeout(struct hostapd_data *hapd) 746{ 747 /* Update WPS PBC Status:PBC Timeout */ 748 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_TIMEOUT; 749} 750 751 752static void hostapd_wps_event_pbc_active(struct hostapd_data *hapd) 753{ 754 /* Update WPS PBC status - Active */ 755 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_ACTIVE; 756} 757 758 759static void hostapd_wps_event_pbc_disable(struct hostapd_data *hapd) 760{ 761 /* Update WPS PBC status - Active */ 762 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE; 763} 764 765 766static void hostapd_wps_event_success(struct hostapd_data *hapd, 767 struct wps_event_success *success) 768{ 769 /* Update WPS status - Success */ 770 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE; 771 hapd->wps_stats.status = WPS_STATUS_SUCCESS; 772 os_memcpy(hapd->wps_stats.peer_addr, success->peer_macaddr, ETH_ALEN); 773} 774 775 776static void hostapd_wps_event_fail(struct hostapd_data *hapd, 777 struct wps_event_fail *fail) 778{ 779 /* Update WPS status - Failure */ 780 hapd->wps_stats.status = WPS_STATUS_FAILURE; 781 os_memcpy(hapd->wps_stats.peer_addr, fail->peer_macaddr, ETH_ALEN); 782 783 hapd->wps_stats.failure_reason = fail->error_indication; 784 785 if (fail->error_indication > 0 && 786 fail->error_indication < NUM_WPS_EI_VALUES) { 787 wpa_msg(hapd->msg_ctx, MSG_INFO, 788 WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)", 789 fail->msg, fail->config_error, fail->error_indication, 790 wps_ei_str(fail->error_indication)); 791 } else { 792 wpa_msg(hapd->msg_ctx, MSG_INFO, 793 WPS_EVENT_FAIL "msg=%d config_error=%d", 794 fail->msg, fail->config_error); 795 } 796} 797 798 799static void hostapd_wps_event_cb(void *ctx, enum wps_event event, 800 union wps_event_data *data) 801{ 802 struct hostapd_data *hapd = ctx; 803 804 switch (event) { 805 case WPS_EV_M2D: 806 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_M2D); 807 break; 808 case WPS_EV_FAIL: 809 hostapd_wps_event_fail(hapd, &data->fail); 810 break; 811 case WPS_EV_SUCCESS: 812 hostapd_wps_event_success(hapd, &data->success); 813 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_SUCCESS); 814 break; 815 case WPS_EV_PWD_AUTH_FAIL: 816 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail); 817 break; 818 case WPS_EV_PBC_OVERLAP: 819 hostapd_wps_event_pbc_overlap(hapd); 820 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_OVERLAP); 821 break; 822 case WPS_EV_PBC_TIMEOUT: 823 hostapd_wps_event_pbc_timeout(hapd); 824 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_TIMEOUT); 825 break; 826 case WPS_EV_PBC_ACTIVE: 827 hostapd_wps_event_pbc_active(hapd); 828 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ACTIVE); 829 break; 830 case WPS_EV_PBC_DISABLE: 831 hostapd_wps_event_pbc_disable(hapd); 832 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_DISABLE); 833 break; 834 case WPS_EV_ER_AP_ADD: 835 break; 836 case WPS_EV_ER_AP_REMOVE: 837 break; 838 case WPS_EV_ER_ENROLLEE_ADD: 839 break; 840 case WPS_EV_ER_ENROLLEE_REMOVE: 841 break; 842 case WPS_EV_ER_AP_SETTINGS: 843 break; 844 case WPS_EV_ER_SET_SELECTED_REGISTRAR: 845 break; 846 case WPS_EV_AP_PIN_SUCCESS: 847 hostapd_wps_ap_pin_success(hapd); 848 break; 849 } 850 if (hapd->wps_event_cb) 851 hapd->wps_event_cb(hapd->wps_event_cb_ctx, event, data); 852} 853 854 855static int hostapd_wps_rf_band_cb(void *ctx) 856{ 857 struct hostapd_data *hapd = ctx; 858 859 return hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ? 860 WPS_RF_50GHZ : 861 hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD ? 862 WPS_RF_60GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */ 863} 864 865 866static void hostapd_wps_clear_ies(struct hostapd_data *hapd, int deinit_only) 867{ 868 wpabuf_free(hapd->wps_beacon_ie); 869 hapd->wps_beacon_ie = NULL; 870 871 wpabuf_free(hapd->wps_probe_resp_ie); 872 hapd->wps_probe_resp_ie = NULL; 873 874 if (deinit_only) { 875 hostapd_reset_ap_wps_ie(hapd); 876 return; 877 } 878 879 hostapd_set_ap_wps_ie(hapd); 880} 881 882 883static int get_uuid_cb(struct hostapd_iface *iface, void *ctx) 884{ 885 const u8 **uuid = ctx; 886 size_t j; 887 888 if (iface == NULL) 889 return 0; 890 for (j = 0; j < iface->num_bss; j++) { 891 struct hostapd_data *hapd = iface->bss[j]; 892 if (hapd->wps && !hapd->conf->wps_independent && 893 !is_nil_uuid(hapd->wps->uuid)) { 894 *uuid = hapd->wps->uuid; 895 return 1; 896 } 897 } 898 899 return 0; 900} 901 902 903static const u8 * get_own_uuid(struct hostapd_iface *iface) 904{ 905 const u8 *uuid; 906 if (iface->interfaces == NULL || 907 iface->interfaces->for_each_interface == NULL) 908 return NULL; 909 uuid = NULL; 910 iface->interfaces->for_each_interface(iface->interfaces, get_uuid_cb, 911 &uuid); 912 return uuid; 913} 914 915 916static int count_interface_cb(struct hostapd_iface *iface, void *ctx) 917{ 918 int *count= ctx; 919 (*count)++; 920 return 0; 921} 922 923 924static int interface_count(struct hostapd_iface *iface) 925{ 926 int count = 0; 927 if (iface->interfaces == NULL || 928 iface->interfaces->for_each_interface == NULL) 929 return 0; 930 iface->interfaces->for_each_interface(iface->interfaces, 931 count_interface_cb, &count); 932 return count; 933} 934 935 936static int hostapd_wps_set_vendor_ext(struct hostapd_data *hapd, 937 struct wps_context *wps) 938{ 939 int i; 940 941 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) { 942 wpabuf_free(wps->dev.vendor_ext[i]); 943 wps->dev.vendor_ext[i] = NULL; 944 945 if (hapd->conf->wps_vendor_ext[i] == NULL) 946 continue; 947 948 wps->dev.vendor_ext[i] = 949 wpabuf_dup(hapd->conf->wps_vendor_ext[i]); 950 if (wps->dev.vendor_ext[i] == NULL) { 951 while (--i >= 0) 952 wpabuf_free(wps->dev.vendor_ext[i]); 953 return -1; 954 } 955 } 956 957 return 0; 958} 959 960 961static void hostapd_free_wps(struct wps_context *wps) 962{ 963 int i; 964 965 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) 966 wpabuf_free(wps->dev.vendor_ext[i]); 967 wps_device_data_free(&wps->dev); 968 os_free(wps->network_key); 969 hostapd_wps_nfc_clear(wps); 970 wpabuf_free(wps->dh_pubkey); 971 wpabuf_free(wps->dh_privkey); 972 os_free(wps); 973} 974 975 976int hostapd_init_wps(struct hostapd_data *hapd, 977 struct hostapd_bss_config *conf) 978{ 979 struct wps_context *wps; 980 struct wps_registrar_config cfg; 981 982 if (conf->wps_state == 0) { 983 hostapd_wps_clear_ies(hapd, 0); 984 return 0; 985 } 986 987 wps = os_zalloc(sizeof(*wps)); 988 if (wps == NULL) 989 return -1; 990 991 wps->cred_cb = hostapd_wps_cred_cb; 992 wps->event_cb = hostapd_wps_event_cb; 993 wps->rf_band_cb = hostapd_wps_rf_band_cb; 994 wps->cb_ctx = hapd; 995 996 os_memset(&cfg, 0, sizeof(cfg)); 997 wps->wps_state = hapd->conf->wps_state; 998 wps->ap_setup_locked = hapd->conf->ap_setup_locked; 999 if (is_nil_uuid(hapd->conf->uuid)) { 1000 const u8 *uuid; 1001 uuid = get_own_uuid(hapd->iface); 1002 if (uuid && !conf->wps_independent) { 1003 os_memcpy(wps->uuid, uuid, UUID_LEN); 1004 wpa_hexdump(MSG_DEBUG, "WPS: Clone UUID from another " 1005 "interface", wps->uuid, UUID_LEN); 1006 } else { 1007 uuid_gen_mac_addr(hapd->own_addr, wps->uuid); 1008 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC " 1009 "address", wps->uuid, UUID_LEN); 1010 } 1011 } else { 1012 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN); 1013 wpa_hexdump(MSG_DEBUG, "WPS: Use configured UUID", 1014 wps->uuid, UUID_LEN); 1015 } 1016 wps->ssid_len = hapd->conf->ssid.ssid_len; 1017 os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len); 1018 wps->ap = 1; 1019 os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN); 1020 wps->dev.device_name = hapd->conf->device_name ? 1021 os_strdup(hapd->conf->device_name) : NULL; 1022 wps->dev.manufacturer = hapd->conf->manufacturer ? 1023 os_strdup(hapd->conf->manufacturer) : NULL; 1024 wps->dev.model_name = hapd->conf->model_name ? 1025 os_strdup(hapd->conf->model_name) : NULL; 1026 wps->dev.model_number = hapd->conf->model_number ? 1027 os_strdup(hapd->conf->model_number) : NULL; 1028 wps->dev.serial_number = hapd->conf->serial_number ? 1029 os_strdup(hapd->conf->serial_number) : NULL; 1030 wps->config_methods = 1031 wps_config_methods_str2bin(hapd->conf->config_methods); 1032 if ((wps->config_methods & 1033 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY | 1034 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) { 1035 wpa_printf(MSG_INFO, "WPS: Converting display to " 1036 "virtual_display for WPS 2.0 compliance"); 1037 wps->config_methods |= WPS_CONFIG_VIRT_DISPLAY; 1038 } 1039 if ((wps->config_methods & 1040 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON | 1041 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) { 1042 wpa_printf(MSG_INFO, "WPS: Converting push_button to " 1043 "virtual_push_button for WPS 2.0 compliance"); 1044 wps->config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON; 1045 } 1046 os_memcpy(wps->dev.pri_dev_type, hapd->conf->device_type, 1047 WPS_DEV_TYPE_LEN); 1048 1049 if (hostapd_wps_set_vendor_ext(hapd, wps) < 0) 1050 goto fail; 1051 1052 wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version); 1053 1054 if (conf->wps_rf_bands) { 1055 wps->dev.rf_bands = conf->wps_rf_bands; 1056 } else { 1057 wps->dev.rf_bands = 1058 hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ? 1059 WPS_RF_50GHZ : 1060 hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD ? 1061 WPS_RF_60GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */ 1062 } 1063 1064 if (conf->wpa & WPA_PROTO_RSN) { 1065 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) 1066 wps->auth_types |= WPS_AUTH_WPA2PSK; 1067 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) 1068 wps->auth_types |= WPS_AUTH_WPA2; 1069 1070 if (conf->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)) 1071 wps->encr_types |= WPS_ENCR_AES; 1072 if (conf->rsn_pairwise & WPA_CIPHER_TKIP) 1073 wps->encr_types |= WPS_ENCR_TKIP; 1074 } 1075 1076 if (conf->wpa & WPA_PROTO_WPA) { 1077 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) 1078 wps->auth_types |= WPS_AUTH_WPAPSK; 1079 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) 1080 wps->auth_types |= WPS_AUTH_WPA; 1081 1082 if (conf->wpa_pairwise & WPA_CIPHER_CCMP) 1083 wps->encr_types |= WPS_ENCR_AES; 1084 if (conf->wpa_pairwise & WPA_CIPHER_TKIP) 1085 wps->encr_types |= WPS_ENCR_TKIP; 1086 } 1087 1088 if (conf->ssid.security_policy == SECURITY_PLAINTEXT) { 1089 wps->encr_types |= WPS_ENCR_NONE; 1090 wps->auth_types |= WPS_AUTH_OPEN; 1091 } 1092 1093 if (conf->ssid.wpa_psk_file) { 1094 /* Use per-device PSKs */ 1095 } else if (conf->ssid.wpa_passphrase) { 1096 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase); 1097 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase); 1098 } else if (conf->ssid.wpa_psk) { 1099 wps->network_key = os_malloc(2 * PMK_LEN + 1); 1100 if (wps->network_key == NULL) 1101 goto fail; 1102 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1, 1103 conf->ssid.wpa_psk->psk, PMK_LEN); 1104 wps->network_key_len = 2 * PMK_LEN; 1105 } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) { 1106 wps->network_key = os_malloc(conf->ssid.wep.len[0]); 1107 if (wps->network_key == NULL) 1108 goto fail; 1109 os_memcpy(wps->network_key, conf->ssid.wep.key[0], 1110 conf->ssid.wep.len[0]); 1111 wps->network_key_len = conf->ssid.wep.len[0]; 1112 } 1113 1114 if (conf->ssid.wpa_psk) { 1115 os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN); 1116 wps->psk_set = 1; 1117 } 1118 1119 wps->ap_auth_type = wps->auth_types; 1120 wps->ap_encr_type = wps->encr_types; 1121 if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) { 1122 /* Override parameters to enable security by default */ 1123 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK; 1124 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP; 1125 } 1126 1127 wps->ap_settings = conf->ap_settings; 1128 wps->ap_settings_len = conf->ap_settings_len; 1129 1130 cfg.new_psk_cb = hostapd_wps_new_psk_cb; 1131 cfg.set_ie_cb = hostapd_wps_set_ie_cb; 1132 cfg.pin_needed_cb = hostapd_wps_pin_needed_cb; 1133 cfg.reg_success_cb = hostapd_wps_reg_success_cb; 1134 cfg.enrollee_seen_cb = hostapd_wps_enrollee_seen_cb; 1135 cfg.cb_ctx = hapd; 1136 cfg.skip_cred_build = conf->skip_cred_build; 1137 cfg.extra_cred = conf->extra_cred; 1138 cfg.extra_cred_len = conf->extra_cred_len; 1139 cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) && 1140 conf->skip_cred_build; 1141 if (conf->ssid.security_policy == SECURITY_STATIC_WEP) 1142 cfg.static_wep_only = 1; 1143 cfg.dualband = interface_count(hapd->iface) > 1; 1144 if ((wps->dev.rf_bands & (WPS_RF_50GHZ | WPS_RF_24GHZ)) == 1145 (WPS_RF_50GHZ | WPS_RF_24GHZ)) 1146 cfg.dualband = 1; 1147 if (cfg.dualband) 1148 wpa_printf(MSG_DEBUG, "WPS: Dualband AP"); 1149 cfg.force_per_enrollee_psk = conf->force_per_enrollee_psk; 1150 1151 wps->registrar = wps_registrar_init(wps, &cfg); 1152 if (wps->registrar == NULL) { 1153 wpa_printf(MSG_ERROR, "Failed to initialize WPS Registrar"); 1154 goto fail; 1155 } 1156 1157#ifdef CONFIG_WPS_UPNP 1158 wps->friendly_name = hapd->conf->friendly_name; 1159 wps->manufacturer_url = hapd->conf->manufacturer_url; 1160 wps->model_description = hapd->conf->model_description; 1161 wps->model_url = hapd->conf->model_url; 1162 wps->upc = hapd->conf->upc; 1163#endif /* CONFIG_WPS_UPNP */ 1164 1165 hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd); 1166 1167 hapd->wps = wps; 1168 1169 return 0; 1170 1171fail: 1172 hostapd_free_wps(wps); 1173 return -1; 1174} 1175 1176 1177int hostapd_init_wps_complete(struct hostapd_data *hapd) 1178{ 1179 struct wps_context *wps = hapd->wps; 1180 1181 if (wps == NULL) 1182 return 0; 1183 1184#ifdef CONFIG_WPS_UPNP 1185 if (hostapd_wps_upnp_init(hapd, wps) < 0) { 1186 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP"); 1187 wps_registrar_deinit(wps->registrar); 1188 hostapd_free_wps(wps); 1189 hapd->wps = NULL; 1190 return -1; 1191 } 1192#endif /* CONFIG_WPS_UPNP */ 1193 1194 return 0; 1195} 1196 1197 1198static void hostapd_wps_nfc_clear(struct wps_context *wps) 1199{ 1200#ifdef CONFIG_WPS_NFC 1201 wpa_printf(MSG_DEBUG, "WPS: Clear NFC Tag context %p", wps); 1202 wps->ap_nfc_dev_pw_id = 0; 1203 wpabuf_free(wps->ap_nfc_dh_pubkey); 1204 wps->ap_nfc_dh_pubkey = NULL; 1205 wpabuf_free(wps->ap_nfc_dh_privkey); 1206 wps->ap_nfc_dh_privkey = NULL; 1207 wpabuf_free(wps->ap_nfc_dev_pw); 1208 wps->ap_nfc_dev_pw = NULL; 1209#endif /* CONFIG_WPS_NFC */ 1210} 1211 1212 1213void hostapd_deinit_wps(struct hostapd_data *hapd) 1214{ 1215 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 1216 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1217 eloop_cancel_timeout(wps_reload_config, hapd->iface, NULL); 1218 if (hapd->wps == NULL) { 1219 hostapd_wps_clear_ies(hapd, 1); 1220 return; 1221 } 1222#ifdef CONFIG_WPS_UPNP 1223 hostapd_wps_upnp_deinit(hapd); 1224#endif /* CONFIG_WPS_UPNP */ 1225 wps_registrar_deinit(hapd->wps->registrar); 1226 wps_free_pending_msgs(hapd->wps->upnp_msgs); 1227 hostapd_free_wps(hapd->wps); 1228 hapd->wps = NULL; 1229 hostapd_wps_clear_ies(hapd, 1); 1230} 1231 1232 1233void hostapd_update_wps(struct hostapd_data *hapd) 1234{ 1235 if (hapd->wps == NULL) 1236 return; 1237 1238#ifdef CONFIG_WPS_UPNP 1239 hapd->wps->friendly_name = hapd->conf->friendly_name; 1240 hapd->wps->manufacturer_url = hapd->conf->manufacturer_url; 1241 hapd->wps->model_description = hapd->conf->model_description; 1242 hapd->wps->model_url = hapd->conf->model_url; 1243 hapd->wps->upc = hapd->conf->upc; 1244#endif /* CONFIG_WPS_UPNP */ 1245 1246 hostapd_wps_set_vendor_ext(hapd, hapd->wps); 1247 1248 if (hapd->conf->wps_state) 1249 wps_registrar_update_ie(hapd->wps->registrar); 1250 else 1251 hostapd_deinit_wps(hapd); 1252} 1253 1254 1255struct wps_add_pin_data { 1256 const u8 *addr; 1257 const u8 *uuid; 1258 const u8 *pin; 1259 size_t pin_len; 1260 int timeout; 1261 int added; 1262}; 1263 1264 1265static int wps_add_pin(struct hostapd_data *hapd, void *ctx) 1266{ 1267 struct wps_add_pin_data *data = ctx; 1268 int ret; 1269 1270 if (hapd->wps == NULL) 1271 return 0; 1272 ret = wps_registrar_add_pin(hapd->wps->registrar, data->addr, 1273 data->uuid, data->pin, data->pin_len, 1274 data->timeout); 1275 if (ret == 0) 1276 data->added++; 1277 return ret; 1278} 1279 1280 1281int hostapd_wps_add_pin(struct hostapd_data *hapd, const u8 *addr, 1282 const char *uuid, const char *pin, int timeout) 1283{ 1284 u8 u[UUID_LEN]; 1285 struct wps_add_pin_data data; 1286 1287 data.addr = addr; 1288 data.uuid = u; 1289 data.pin = (const u8 *) pin; 1290 data.pin_len = os_strlen(pin); 1291 data.timeout = timeout; 1292 data.added = 0; 1293 1294 if (os_strcmp(uuid, "any") == 0) 1295 data.uuid = NULL; 1296 else { 1297 if (uuid_str2bin(uuid, u)) 1298 return -1; 1299 data.uuid = u; 1300 } 1301 if (hostapd_wps_for_each(hapd, wps_add_pin, &data) < 0) 1302 return -1; 1303 return data.added ? 0 : -1; 1304} 1305 1306 1307struct wps_button_pushed_ctx { 1308 const u8 *p2p_dev_addr; 1309 unsigned int count; 1310}; 1311 1312static int wps_button_pushed(struct hostapd_data *hapd, void *ctx) 1313{ 1314 struct wps_button_pushed_ctx *data = ctx; 1315 1316 if (hapd->wps) { 1317 data->count++; 1318 return wps_registrar_button_pushed(hapd->wps->registrar, 1319 data->p2p_dev_addr); 1320 } 1321 1322 return 0; 1323} 1324 1325 1326int hostapd_wps_button_pushed(struct hostapd_data *hapd, 1327 const u8 *p2p_dev_addr) 1328{ 1329 struct wps_button_pushed_ctx ctx; 1330 int ret; 1331 1332 os_memset(&ctx, 0, sizeof(ctx)); 1333 ctx.p2p_dev_addr = p2p_dev_addr; 1334 ret = hostapd_wps_for_each(hapd, wps_button_pushed, &ctx); 1335 if (ret == 0 && !ctx.count) 1336 ret = -1; 1337 return ret; 1338} 1339 1340 1341struct wps_cancel_ctx { 1342 unsigned int count; 1343}; 1344 1345static int wps_cancel(struct hostapd_data *hapd, void *ctx) 1346{ 1347 struct wps_cancel_ctx *data = ctx; 1348 1349 if (hapd->wps) { 1350 data->count++; 1351 wps_registrar_wps_cancel(hapd->wps->registrar); 1352 ap_for_each_sta(hapd, ap_sta_wps_cancel, NULL); 1353 } 1354 1355 return 0; 1356} 1357 1358 1359int hostapd_wps_cancel(struct hostapd_data *hapd) 1360{ 1361 struct wps_cancel_ctx ctx; 1362 int ret; 1363 1364 os_memset(&ctx, 0, sizeof(ctx)); 1365 ret = hostapd_wps_for_each(hapd, wps_cancel, &ctx); 1366 if (ret == 0 && !ctx.count) 1367 ret = -1; 1368 return ret; 1369} 1370 1371 1372static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da, 1373 const u8 *bssid, 1374 const u8 *ie, size_t ie_len, 1375 int ssi_signal) 1376{ 1377 struct hostapd_data *hapd = ctx; 1378 struct wpabuf *wps_ie; 1379 struct ieee802_11_elems elems; 1380 1381 if (hapd->wps == NULL) 1382 return 0; 1383 1384 if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) { 1385 wpa_printf(MSG_DEBUG, "WPS: Could not parse ProbeReq from " 1386 MACSTR, MAC2STR(addr)); 1387 return 0; 1388 } 1389 1390 if (elems.ssid && elems.ssid_len > 0 && 1391 (elems.ssid_len != hapd->conf->ssid.ssid_len || 1392 os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) != 1393 0)) 1394 return 0; /* Not for us */ 1395 1396 wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA); 1397 if (wps_ie == NULL) 1398 return 0; 1399 if (wps_validate_probe_req(wps_ie, addr) < 0) { 1400 wpabuf_free(wps_ie); 1401 return 0; 1402 } 1403 1404 if (wpabuf_len(wps_ie) > 0) { 1405 int p2p_wildcard = 0; 1406#ifdef CONFIG_P2P 1407 if (elems.ssid && elems.ssid_len == P2P_WILDCARD_SSID_LEN && 1408 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, 1409 P2P_WILDCARD_SSID_LEN) == 0) 1410 p2p_wildcard = 1; 1411#endif /* CONFIG_P2P */ 1412 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie, 1413 p2p_wildcard); 1414#ifdef CONFIG_WPS_UPNP 1415 /* FIX: what exactly should be included in the WLANEvent? 1416 * WPS attributes? Full ProbeReq frame? */ 1417 if (!p2p_wildcard) 1418 upnp_wps_device_send_wlan_event( 1419 hapd->wps_upnp, addr, 1420 UPNP_WPS_WLANEVENT_TYPE_PROBE, wps_ie); 1421#endif /* CONFIG_WPS_UPNP */ 1422 } 1423 1424 wpabuf_free(wps_ie); 1425 1426 return 0; 1427} 1428 1429 1430#ifdef CONFIG_WPS_UPNP 1431 1432static int hostapd_rx_req_put_wlan_response( 1433 void *priv, enum upnp_wps_wlanevent_type ev_type, 1434 const u8 *mac_addr, const struct wpabuf *msg, 1435 enum wps_msg_type msg_type) 1436{ 1437 struct hostapd_data *hapd = priv; 1438 struct sta_info *sta; 1439 struct upnp_pending_message *p; 1440 1441 wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr=" 1442 MACSTR, ev_type, MAC2STR(mac_addr)); 1443 wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage", 1444 wpabuf_head(msg), wpabuf_len(msg)); 1445 if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) { 1446 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected " 1447 "PutWLANResponse WLANEventType %d", ev_type); 1448 return -1; 1449 } 1450 1451 /* 1452 * EAP response to ongoing to WPS Registration. Send it to EAP-WSC 1453 * server implementation for delivery to the peer. 1454 */ 1455 1456 sta = ap_get_sta(hapd, mac_addr); 1457#ifndef CONFIG_WPS_STRICT 1458 if (!sta) { 1459 /* 1460 * Workaround - Intel wsccmd uses bogus NewWLANEventMAC: 1461 * Pick STA that is in an ongoing WPS registration without 1462 * checking the MAC address. 1463 */ 1464 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based " 1465 "on NewWLANEventMAC; try wildcard match"); 1466 for (sta = hapd->sta_list; sta; sta = sta->next) { 1467 if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS)) 1468 break; 1469 } 1470 } 1471#endif /* CONFIG_WPS_STRICT */ 1472 1473 if (!sta || !(sta->flags & WLAN_STA_WPS)) { 1474 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found"); 1475 return 0; 1476 } 1477 1478 if (!sta->eapol_sm) { 1479 /* 1480 * This can happen, e.g., if an ER sends an extra message after 1481 * the station has disassociated (but not fully 1482 * deauthenticated). 1483 */ 1484 wpa_printf(MSG_DEBUG, "WPS UPnP: Matching STA did not have EAPOL state machine initialized"); 1485 return 0; 1486 } 1487 1488 p = os_zalloc(sizeof(*p)); 1489 if (p == NULL) 1490 return -1; 1491 os_memcpy(p->addr, sta->addr, ETH_ALEN); 1492 p->msg = wpabuf_dup(msg); 1493 p->type = msg_type; 1494 p->next = hapd->wps->upnp_msgs; 1495 hapd->wps->upnp_msgs = p; 1496 1497 return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap); 1498} 1499 1500 1501static int hostapd_wps_upnp_init(struct hostapd_data *hapd, 1502 struct wps_context *wps) 1503{ 1504 struct upnp_wps_device_ctx *ctx; 1505 1506 if (!hapd->conf->upnp_iface) 1507 return 0; 1508 ctx = os_zalloc(sizeof(*ctx)); 1509 if (ctx == NULL) 1510 return -1; 1511 1512 ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response; 1513 if (hapd->conf->ap_pin) 1514 ctx->ap_pin = os_strdup(hapd->conf->ap_pin); 1515 1516 hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd, 1517 hapd->conf->upnp_iface); 1518 if (hapd->wps_upnp == NULL) 1519 return -1; 1520 wps->wps_upnp = hapd->wps_upnp; 1521 1522 return 0; 1523} 1524 1525 1526static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd) 1527{ 1528 upnp_wps_device_deinit(hapd->wps_upnp, hapd); 1529} 1530 1531#endif /* CONFIG_WPS_UPNP */ 1532 1533 1534int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr, 1535 char *buf, size_t buflen) 1536{ 1537 if (hapd->wps == NULL) 1538 return 0; 1539 return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen); 1540} 1541 1542 1543static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx) 1544{ 1545 struct hostapd_data *hapd = eloop_data; 1546 wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out"); 1547 hostapd_wps_ap_pin_disable(hapd); 1548 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_PIN_DISABLED); 1549} 1550 1551 1552static void hostapd_wps_ap_pin_enable(struct hostapd_data *hapd, int timeout) 1553{ 1554 wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout); 1555 hapd->ap_pin_failures = 0; 1556 hapd->ap_pin_failures_consecutive = 0; 1557 hapd->conf->ap_setup_locked = 0; 1558 if (hapd->wps->ap_setup_locked) { 1559 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED); 1560 hapd->wps->ap_setup_locked = 0; 1561 wps_registrar_update_ie(hapd->wps->registrar); 1562 } 1563 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1564 if (timeout > 0) 1565 eloop_register_timeout(timeout, 0, 1566 hostapd_wps_ap_pin_timeout, hapd, NULL); 1567} 1568 1569 1570static int wps_ap_pin_disable(struct hostapd_data *hapd, void *ctx) 1571{ 1572 os_free(hapd->conf->ap_pin); 1573 hapd->conf->ap_pin = NULL; 1574#ifdef CONFIG_WPS_UPNP 1575 upnp_wps_set_ap_pin(hapd->wps_upnp, NULL); 1576#endif /* CONFIG_WPS_UPNP */ 1577 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1578 return 0; 1579} 1580 1581 1582void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd) 1583{ 1584 wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN"); 1585 hostapd_wps_for_each(hapd, wps_ap_pin_disable, NULL); 1586} 1587 1588 1589struct wps_ap_pin_data { 1590 char pin_txt[9]; 1591 int timeout; 1592}; 1593 1594 1595static int wps_ap_pin_set(struct hostapd_data *hapd, void *ctx) 1596{ 1597 struct wps_ap_pin_data *data = ctx; 1598 1599 if (!hapd->wps) 1600 return 0; 1601 1602 os_free(hapd->conf->ap_pin); 1603 hapd->conf->ap_pin = os_strdup(data->pin_txt); 1604#ifdef CONFIG_WPS_UPNP 1605 upnp_wps_set_ap_pin(hapd->wps_upnp, data->pin_txt); 1606#endif /* CONFIG_WPS_UPNP */ 1607 hostapd_wps_ap_pin_enable(hapd, data->timeout); 1608 return 0; 1609} 1610 1611 1612const char * hostapd_wps_ap_pin_random(struct hostapd_data *hapd, int timeout) 1613{ 1614 unsigned int pin; 1615 struct wps_ap_pin_data data; 1616 1617 pin = wps_generate_pin(); 1618 os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%08u", pin); 1619 data.timeout = timeout; 1620 hostapd_wps_for_each(hapd, wps_ap_pin_set, &data); 1621 return hapd->conf->ap_pin; 1622} 1623 1624 1625const char * hostapd_wps_ap_pin_get(struct hostapd_data *hapd) 1626{ 1627 return hapd->conf->ap_pin; 1628} 1629 1630 1631int hostapd_wps_ap_pin_set(struct hostapd_data *hapd, const char *pin, 1632 int timeout) 1633{ 1634 struct wps_ap_pin_data data; 1635 int ret; 1636 1637 ret = os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%s", pin); 1638 if (os_snprintf_error(sizeof(data.pin_txt), ret)) 1639 return -1; 1640 data.timeout = timeout; 1641 return hostapd_wps_for_each(hapd, wps_ap_pin_set, &data); 1642} 1643 1644 1645static int wps_update_ie(struct hostapd_data *hapd, void *ctx) 1646{ 1647 if (hapd->wps) 1648 wps_registrar_update_ie(hapd->wps->registrar); 1649 return 0; 1650} 1651 1652 1653void hostapd_wps_update_ie(struct hostapd_data *hapd) 1654{ 1655 hostapd_wps_for_each(hapd, wps_update_ie, NULL); 1656} 1657 1658 1659int hostapd_wps_config_ap(struct hostapd_data *hapd, const char *ssid, 1660 const char *auth, const char *encr, const char *key) 1661{ 1662 struct wps_credential cred; 1663 size_t len; 1664 1665 os_memset(&cred, 0, sizeof(cred)); 1666 1667 len = os_strlen(ssid); 1668 if ((len & 1) || len > 2 * sizeof(cred.ssid) || 1669 hexstr2bin(ssid, cred.ssid, len / 2)) 1670 return -1; 1671 cred.ssid_len = len / 2; 1672 1673 if (os_strncmp(auth, "OPEN", 4) == 0) 1674 cred.auth_type = WPS_AUTH_OPEN; 1675 else if (os_strncmp(auth, "WPAPSK", 6) == 0) 1676 cred.auth_type = WPS_AUTH_WPAPSK; 1677 else if (os_strncmp(auth, "WPA2PSK", 7) == 0) 1678 cred.auth_type = WPS_AUTH_WPA2PSK; 1679 else 1680 return -1; 1681 1682 if (encr) { 1683 if (os_strncmp(encr, "NONE", 4) == 0) 1684 cred.encr_type = WPS_ENCR_NONE; 1685 else if (os_strncmp(encr, "TKIP", 4) == 0) 1686 cred.encr_type = WPS_ENCR_TKIP; 1687 else if (os_strncmp(encr, "CCMP", 4) == 0) 1688 cred.encr_type = WPS_ENCR_AES; 1689 else 1690 return -1; 1691 } else 1692 cred.encr_type = WPS_ENCR_NONE; 1693 1694 if (key) { 1695 len = os_strlen(key); 1696 if ((len & 1) || len > 2 * sizeof(cred.key) || 1697 hexstr2bin(key, cred.key, len / 2)) 1698 return -1; 1699 cred.key_len = len / 2; 1700 } 1701 1702 return wps_registrar_config_ap(hapd->wps->registrar, &cred); 1703} 1704 1705 1706#ifdef CONFIG_WPS_NFC 1707 1708struct wps_nfc_password_token_data { 1709 const u8 *oob_dev_pw; 1710 size_t oob_dev_pw_len; 1711 int added; 1712}; 1713 1714 1715static int wps_add_nfc_password_token(struct hostapd_data *hapd, void *ctx) 1716{ 1717 struct wps_nfc_password_token_data *data = ctx; 1718 int ret; 1719 1720 if (hapd->wps == NULL) 1721 return 0; 1722 ret = wps_registrar_add_nfc_password_token(hapd->wps->registrar, 1723 data->oob_dev_pw, 1724 data->oob_dev_pw_len); 1725 if (ret == 0) 1726 data->added++; 1727 return ret; 1728} 1729 1730 1731static int hostapd_wps_add_nfc_password_token(struct hostapd_data *hapd, 1732 struct wps_parse_attr *attr) 1733{ 1734 struct wps_nfc_password_token_data data; 1735 1736 data.oob_dev_pw = attr->oob_dev_password; 1737 data.oob_dev_pw_len = attr->oob_dev_password_len; 1738 data.added = 0; 1739 if (hostapd_wps_for_each(hapd, wps_add_nfc_password_token, &data) < 0) 1740 return -1; 1741 return data.added ? 0 : -1; 1742} 1743 1744 1745static int hostapd_wps_nfc_tag_process(struct hostapd_data *hapd, 1746 const struct wpabuf *wps) 1747{ 1748 struct wps_parse_attr attr; 1749 1750 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps); 1751 1752 if (wps_parse_msg(wps, &attr)) { 1753 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag"); 1754 return -1; 1755 } 1756 1757 if (attr.oob_dev_password) 1758 return hostapd_wps_add_nfc_password_token(hapd, &attr); 1759 1760 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag"); 1761 return -1; 1762} 1763 1764 1765int hostapd_wps_nfc_tag_read(struct hostapd_data *hapd, 1766 const struct wpabuf *data) 1767{ 1768 const struct wpabuf *wps = data; 1769 struct wpabuf *tmp = NULL; 1770 int ret; 1771 1772 if (wpabuf_len(data) < 4) 1773 return -1; 1774 1775 if (*wpabuf_head_u8(data) != 0x10) { 1776 /* Assume this contains full NDEF record */ 1777 tmp = ndef_parse_wifi(data); 1778 if (tmp == NULL) { 1779 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF"); 1780 return -1; 1781 } 1782 wps = tmp; 1783 } 1784 1785 ret = hostapd_wps_nfc_tag_process(hapd, wps); 1786 wpabuf_free(tmp); 1787 return ret; 1788} 1789 1790 1791struct wpabuf * hostapd_wps_nfc_config_token(struct hostapd_data *hapd, 1792 int ndef) 1793{ 1794 struct wpabuf *ret; 1795 1796 if (hapd->wps == NULL) 1797 return NULL; 1798 1799 ret = wps_get_oob_cred(hapd->wps, hostapd_wps_rf_band_cb(hapd), 1800 hapd->iconf->channel); 1801 if (ndef && ret) { 1802 struct wpabuf *tmp; 1803 tmp = ndef_build_wifi(ret); 1804 wpabuf_free(ret); 1805 if (tmp == NULL) 1806 return NULL; 1807 ret = tmp; 1808 } 1809 1810 return ret; 1811} 1812 1813 1814struct wpabuf * hostapd_wps_nfc_hs_cr(struct hostapd_data *hapd, int ndef) 1815{ 1816 struct wpabuf *ret; 1817 1818 if (hapd->wps == NULL) 1819 return NULL; 1820 1821 if (hapd->conf->wps_nfc_dh_pubkey == NULL) { 1822 struct wps_context *wps = hapd->wps; 1823 if (wps_nfc_gen_dh(&hapd->conf->wps_nfc_dh_pubkey, 1824 &hapd->conf->wps_nfc_dh_privkey) < 0) 1825 return NULL; 1826 hostapd_wps_nfc_clear(wps); 1827 wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER; 1828 wps->ap_nfc_dh_pubkey = 1829 wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey); 1830 wps->ap_nfc_dh_privkey = 1831 wpabuf_dup(hapd->conf->wps_nfc_dh_privkey); 1832 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) { 1833 hostapd_wps_nfc_clear(wps); 1834 return NULL; 1835 } 1836 } 1837 1838 ret = wps_build_nfc_handover_sel(hapd->wps, 1839 hapd->conf->wps_nfc_dh_pubkey, 1840 hapd->own_addr, hapd->iface->freq); 1841 1842 if (ndef && ret) { 1843 struct wpabuf *tmp; 1844 tmp = ndef_build_wifi(ret); 1845 wpabuf_free(ret); 1846 if (tmp == NULL) 1847 return NULL; 1848 ret = tmp; 1849 } 1850 1851 return ret; 1852} 1853 1854 1855int hostapd_wps_nfc_report_handover(struct hostapd_data *hapd, 1856 const struct wpabuf *req, 1857 const struct wpabuf *sel) 1858{ 1859 struct wpabuf *wps; 1860 int ret = -1; 1861 u16 wsc_len; 1862 const u8 *pos; 1863 struct wpabuf msg; 1864 struct wps_parse_attr attr; 1865 u16 dev_pw_id; 1866 1867 /* 1868 * Enrollee/station is always initiator of the NFC connection handover, 1869 * so use the request message here to find Enrollee public key hash. 1870 */ 1871 wps = ndef_parse_wifi(req); 1872 if (wps == NULL) 1873 return -1; 1874 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc " 1875 "payload from NFC connection handover"); 1876 wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps); 1877 if (wpabuf_len(wps) < 2) { 1878 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request " 1879 "Message"); 1880 goto out; 1881 } 1882 pos = wpabuf_head(wps); 1883 wsc_len = WPA_GET_BE16(pos); 1884 if (wsc_len > wpabuf_len(wps) - 2) { 1885 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) " 1886 "in rt Wi-Fi Handover Request Message", wsc_len); 1887 goto out; 1888 } 1889 pos += 2; 1890 1891 wpa_hexdump(MSG_DEBUG, 1892 "WPS: WSC attributes in Wi-Fi Handover Request Message", 1893 pos, wsc_len); 1894 if (wsc_len < wpabuf_len(wps) - 2) { 1895 wpa_hexdump(MSG_DEBUG, 1896 "WPS: Ignore extra data after WSC attributes", 1897 pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len); 1898 } 1899 1900 wpabuf_set(&msg, pos, wsc_len); 1901 ret = wps_parse_msg(&msg, &attr); 1902 if (ret < 0) { 1903 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in " 1904 "Wi-Fi Handover Request Message"); 1905 goto out; 1906 } 1907 1908 if (attr.oob_dev_password == NULL || 1909 attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) { 1910 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password " 1911 "included in Wi-Fi Handover Request Message"); 1912 ret = -1; 1913 goto out; 1914 } 1915 1916 if (attr.uuid_e == NULL) { 1917 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi " 1918 "Handover Request Message"); 1919 ret = -1; 1920 goto out; 1921 } 1922 1923 wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN); 1924 1925 wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password", 1926 attr.oob_dev_password, attr.oob_dev_password_len); 1927 dev_pw_id = WPA_GET_BE16(attr.oob_dev_password + 1928 WPS_OOB_PUBKEY_HASH_LEN); 1929 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) { 1930 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID " 1931 "%u in Wi-Fi Handover Request Message", dev_pw_id); 1932 ret = -1; 1933 goto out; 1934 } 1935 wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash", 1936 attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN); 1937 1938 ret = wps_registrar_add_nfc_pw_token(hapd->wps->registrar, 1939 attr.oob_dev_password, 1940 DEV_PW_NFC_CONNECTION_HANDOVER, 1941 NULL, 0, 1); 1942 1943out: 1944 wpabuf_free(wps); 1945 return ret; 1946} 1947 1948 1949struct wpabuf * hostapd_wps_nfc_token_gen(struct hostapd_data *hapd, int ndef) 1950{ 1951 if (hapd->conf->wps_nfc_pw_from_config) { 1952 return wps_nfc_token_build(ndef, 1953 hapd->conf->wps_nfc_dev_pw_id, 1954 hapd->conf->wps_nfc_dh_pubkey, 1955 hapd->conf->wps_nfc_dev_pw); 1956 } 1957 1958 return wps_nfc_token_gen(ndef, &hapd->conf->wps_nfc_dev_pw_id, 1959 &hapd->conf->wps_nfc_dh_pubkey, 1960 &hapd->conf->wps_nfc_dh_privkey, 1961 &hapd->conf->wps_nfc_dev_pw); 1962} 1963 1964 1965int hostapd_wps_nfc_token_enable(struct hostapd_data *hapd) 1966{ 1967 struct wps_context *wps = hapd->wps; 1968 struct wpabuf *pw; 1969 1970 if (wps == NULL) 1971 return -1; 1972 1973 if (!hapd->conf->wps_nfc_dh_pubkey || 1974 !hapd->conf->wps_nfc_dh_privkey || 1975 !hapd->conf->wps_nfc_dev_pw || 1976 !hapd->conf->wps_nfc_dev_pw_id) 1977 return -1; 1978 1979 hostapd_wps_nfc_clear(wps); 1980 wpa_printf(MSG_DEBUG, 1981 "WPS: Enable NFC Tag (Dev Pw Id %u) for AP interface %s (context %p)", 1982 hapd->conf->wps_nfc_dev_pw_id, hapd->conf->iface, wps); 1983 wps->ap_nfc_dev_pw_id = hapd->conf->wps_nfc_dev_pw_id; 1984 wps->ap_nfc_dh_pubkey = wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey); 1985 wps->ap_nfc_dh_privkey = wpabuf_dup(hapd->conf->wps_nfc_dh_privkey); 1986 pw = hapd->conf->wps_nfc_dev_pw; 1987 wps->ap_nfc_dev_pw = wpabuf_alloc( 1988 wpabuf_len(pw) * 2 + 1); 1989 if (wps->ap_nfc_dev_pw) { 1990 wpa_snprintf_hex_uppercase( 1991 (char *) wpabuf_put(wps->ap_nfc_dev_pw, 1992 wpabuf_len(pw) * 2), 1993 wpabuf_len(pw) * 2 + 1, 1994 wpabuf_head(pw), wpabuf_len(pw)); 1995 } 1996 1997 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey || 1998 !wps->ap_nfc_dev_pw) { 1999 hostapd_wps_nfc_clear(wps); 2000 return -1; 2001 } 2002 2003 return 0; 2004} 2005 2006 2007void hostapd_wps_nfc_token_disable(struct hostapd_data *hapd) 2008{ 2009 wpa_printf(MSG_DEBUG, "WPS: Disable NFC token for AP interface %s", 2010 hapd->conf->iface); 2011 hostapd_wps_nfc_clear(hapd->wps); 2012} 2013 2014#endif /* CONFIG_WPS_NFC */ 2015