wps_hostapd.c revision cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50e
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); 43 44 45struct wps_for_each_data { 46 int (*func)(struct hostapd_data *h, void *ctx); 47 void *ctx; 48 struct hostapd_data *calling_hapd; 49}; 50 51 52static int wps_for_each(struct hostapd_iface *iface, void *ctx) 53{ 54 struct wps_for_each_data *data = ctx; 55 size_t j; 56 57 if (iface == NULL) 58 return 0; 59 for (j = 0; j < iface->num_bss; j++) { 60 struct hostapd_data *hapd = iface->bss[j]; 61 int ret; 62 63 if (hapd != data->calling_hapd && 64 (hapd->conf->wps_independent || 65 data->calling_hapd->conf->wps_independent)) 66 continue; 67 68 ret = data->func(hapd, data->ctx); 69 if (ret) 70 return ret; 71 } 72 73 return 0; 74} 75 76 77static int hostapd_wps_for_each(struct hostapd_data *hapd, 78 int (*func)(struct hostapd_data *h, void *ctx), 79 void *ctx) 80{ 81 struct hostapd_iface *iface = hapd->iface; 82 struct wps_for_each_data data; 83 data.func = func; 84 data.ctx = ctx; 85 data.calling_hapd = hapd; 86 if (iface->interfaces == NULL || 87 iface->interfaces->for_each_interface == NULL) 88 return wps_for_each(iface, &data); 89 return iface->interfaces->for_each_interface(iface->interfaces, 90 wps_for_each, &data); 91} 92 93 94static int hostapd_wps_new_psk_cb(void *ctx, const u8 *mac_addr, 95 const u8 *p2p_dev_addr, const u8 *psk, 96 size_t psk_len) 97{ 98 struct hostapd_data *hapd = ctx; 99 struct hostapd_wpa_psk *p; 100 struct hostapd_ssid *ssid = &hapd->conf->ssid; 101 102 if (is_zero_ether_addr(p2p_dev_addr)) { 103 wpa_printf(MSG_DEBUG, 104 "Received new WPA/WPA2-PSK from WPS for STA " MACSTR, 105 MAC2STR(mac_addr)); 106 } else { 107 wpa_printf(MSG_DEBUG, 108 "Received new WPA/WPA2-PSK from WPS for STA " MACSTR 109 " P2P Device Addr " MACSTR, 110 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr)); 111 } 112 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len); 113 114 if (psk_len != PMK_LEN) { 115 wpa_printf(MSG_DEBUG, "Unexpected PSK length %lu", 116 (unsigned long) psk_len); 117 return -1; 118 } 119 120 /* Add the new PSK to runtime PSK list */ 121 p = os_zalloc(sizeof(*p)); 122 if (p == NULL) 123 return -1; 124 os_memcpy(p->addr, mac_addr, ETH_ALEN); 125 os_memcpy(p->p2p_dev_addr, p2p_dev_addr, ETH_ALEN); 126 os_memcpy(p->psk, psk, PMK_LEN); 127 128 if (hapd->new_psk_cb) { 129 hapd->new_psk_cb(hapd->new_psk_cb_ctx, mac_addr, p2p_dev_addr, 130 psk, psk_len); 131 } 132 133 p->next = ssid->wpa_psk; 134 ssid->wpa_psk = p; 135 136 if (ssid->wpa_psk_file) { 137 FILE *f; 138 char hex[PMK_LEN * 2 + 1]; 139 /* Add the new PSK to PSK list file */ 140 f = fopen(ssid->wpa_psk_file, "a"); 141 if (f == NULL) { 142 wpa_printf(MSG_DEBUG, "Failed to add the PSK to " 143 "'%s'", ssid->wpa_psk_file); 144 return -1; 145 } 146 147 wpa_snprintf_hex(hex, sizeof(hex), psk, psk_len); 148 fprintf(f, MACSTR " %s\n", MAC2STR(mac_addr), hex); 149 fclose(f); 150 } 151 152 return 0; 153} 154 155 156static int hostapd_wps_set_ie_cb(void *ctx, struct wpabuf *beacon_ie, 157 struct wpabuf *probe_resp_ie) 158{ 159 struct hostapd_data *hapd = ctx; 160 wpabuf_free(hapd->wps_beacon_ie); 161 hapd->wps_beacon_ie = beacon_ie; 162 wpabuf_free(hapd->wps_probe_resp_ie); 163 hapd->wps_probe_resp_ie = probe_resp_ie; 164 if (hapd->beacon_set_done) 165 ieee802_11_set_beacon(hapd); 166 return hostapd_set_ap_wps_ie(hapd); 167} 168 169 170static void hostapd_wps_pin_needed_cb(void *ctx, const u8 *uuid_e, 171 const struct wps_device_data *dev) 172{ 173 struct hostapd_data *hapd = ctx; 174 char uuid[40], txt[400]; 175 int len; 176 char devtype[WPS_DEV_TYPE_BUFSIZE]; 177 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid))) 178 return; 179 wpa_printf(MSG_DEBUG, "WPS: PIN needed for E-UUID %s", uuid); 180 len = os_snprintf(txt, sizeof(txt), WPS_EVENT_PIN_NEEDED 181 "%s " MACSTR " [%s|%s|%s|%s|%s|%s]", 182 uuid, MAC2STR(dev->mac_addr), dev->device_name, 183 dev->manufacturer, dev->model_name, 184 dev->model_number, dev->serial_number, 185 wps_dev_type_bin2str(dev->pri_dev_type, devtype, 186 sizeof(devtype))); 187 if (len > 0 && len < (int) sizeof(txt)) 188 wpa_msg(hapd->msg_ctx, MSG_INFO, "%s", txt); 189 190 if (hapd->conf->wps_pin_requests) { 191 FILE *f; 192 struct os_time t; 193 f = fopen(hapd->conf->wps_pin_requests, "a"); 194 if (f == NULL) 195 return; 196 os_get_time(&t); 197 fprintf(f, "%ld\t%s\t" MACSTR "\t%s\t%s\t%s\t%s\t%s" 198 "\t%s\n", 199 t.sec, uuid, MAC2STR(dev->mac_addr), dev->device_name, 200 dev->manufacturer, dev->model_name, dev->model_number, 201 dev->serial_number, 202 wps_dev_type_bin2str(dev->pri_dev_type, devtype, 203 sizeof(devtype))); 204 fclose(f); 205 } 206} 207 208 209struct wps_stop_reg_data { 210 struct hostapd_data *current_hapd; 211 const u8 *uuid_e; 212 const u8 *dev_pw; 213 size_t dev_pw_len; 214}; 215 216static int wps_stop_registrar(struct hostapd_data *hapd, void *ctx) 217{ 218 struct wps_stop_reg_data *data = ctx; 219 if (hapd != data->current_hapd && hapd->wps != NULL) 220 wps_registrar_complete(hapd->wps->registrar, data->uuid_e, 221 data->dev_pw, data->dev_pw_len); 222 return 0; 223} 224 225 226static void hostapd_wps_reg_success_cb(void *ctx, const u8 *mac_addr, 227 const u8 *uuid_e, const u8 *dev_pw, 228 size_t dev_pw_len) 229{ 230 struct hostapd_data *hapd = ctx; 231 char uuid[40]; 232 struct wps_stop_reg_data data; 233 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid))) 234 return; 235 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_REG_SUCCESS MACSTR " %s", 236 MAC2STR(mac_addr), uuid); 237 if (hapd->wps_reg_success_cb) 238 hapd->wps_reg_success_cb(hapd->wps_reg_success_cb_ctx, 239 mac_addr, uuid_e); 240 data.current_hapd = hapd; 241 data.uuid_e = uuid_e; 242 data.dev_pw = dev_pw; 243 data.dev_pw_len = dev_pw_len; 244 hostapd_wps_for_each(hapd, wps_stop_registrar, &data); 245} 246 247 248static void hostapd_wps_enrollee_seen_cb(void *ctx, const u8 *addr, 249 const u8 *uuid_e, 250 const u8 *pri_dev_type, 251 u16 config_methods, 252 u16 dev_password_id, u8 request_type, 253 const char *dev_name) 254{ 255 struct hostapd_data *hapd = ctx; 256 char uuid[40]; 257 char devtype[WPS_DEV_TYPE_BUFSIZE]; 258 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid))) 259 return; 260 if (dev_name == NULL) 261 dev_name = ""; 262 wpa_msg_ctrl(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ENROLLEE_SEEN MACSTR 263 " %s %s 0x%x %u %u [%s]", 264 MAC2STR(addr), uuid, 265 wps_dev_type_bin2str(pri_dev_type, devtype, 266 sizeof(devtype)), 267 config_methods, dev_password_id, request_type, dev_name); 268} 269 270 271static int str_starts(const char *str, const char *start) 272{ 273 return os_strncmp(str, start, os_strlen(start)) == 0; 274} 275 276 277static void wps_reload_config(void *eloop_data, void *user_ctx) 278{ 279 struct hostapd_iface *iface = eloop_data; 280 281 wpa_printf(MSG_DEBUG, "WPS: Reload configuration data"); 282 if (iface->interfaces == NULL || 283 iface->interfaces->reload_config(iface) < 0) { 284 wpa_printf(MSG_WARNING, "WPS: Failed to reload the updated " 285 "configuration"); 286 } 287} 288 289 290void hostapd_wps_eap_completed(struct hostapd_data *hapd) 291{ 292 /* 293 * Reduce race condition of the station trying to reconnect immediately 294 * after AP reconfiguration through WPS by rescheduling the reload 295 * timeout to happen after EAP completion rather than the originally 296 * scheduled 100 ms after new configuration became known. 297 */ 298 if (eloop_deplete_timeout(0, 0, wps_reload_config, hapd->iface, NULL) == 299 1) 300 wpa_printf(MSG_DEBUG, "WPS: Reschedule immediate configuration reload"); 301} 302 303 304static void hapd_new_ap_event(struct hostapd_data *hapd, const u8 *attr, 305 size_t attr_len) 306{ 307 size_t blen = attr_len * 2 + 1; 308 char *buf = os_malloc(blen); 309 if (buf) { 310 wpa_snprintf_hex(buf, blen, attr, attr_len); 311 wpa_msg(hapd->msg_ctx, MSG_INFO, 312 WPS_EVENT_NEW_AP_SETTINGS "%s", buf); 313 os_free(buf); 314 } 315} 316 317 318static int hapd_wps_reconfig_in_memory(struct hostapd_data *hapd, 319 const struct wps_credential *cred) 320{ 321 struct hostapd_bss_config *bss = hapd->conf; 322 323 wpa_printf(MSG_DEBUG, "WPS: Updating in-memory configuration"); 324 325 bss->wps_state = 2; 326 if (cred->ssid_len <= HOSTAPD_MAX_SSID_LEN) { 327 os_memcpy(bss->ssid.ssid, cred->ssid, cred->ssid_len); 328 bss->ssid.ssid_len = cred->ssid_len; 329 bss->ssid.ssid_set = 1; 330 } 331 332 if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) && 333 (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))) 334 bss->wpa = 3; 335 else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) 336 bss->wpa = 2; 337 else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)) 338 bss->wpa = 1; 339 else 340 bss->wpa = 0; 341 342 if (bss->wpa) { 343 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) 344 bss->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X; 345 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK)) 346 bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK; 347 348 bss->wpa_pairwise = 0; 349 if (cred->encr_type & WPS_ENCR_AES) 350 bss->wpa_pairwise |= WPA_CIPHER_CCMP; 351 if (cred->encr_type & WPS_ENCR_TKIP) 352 bss->wpa_pairwise |= WPA_CIPHER_TKIP; 353 bss->rsn_pairwise = bss->wpa_pairwise; 354 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, 355 bss->wpa_pairwise, 356 bss->rsn_pairwise); 357 358 if (cred->key_len >= 8 && cred->key_len < 64) { 359 os_free(bss->ssid.wpa_passphrase); 360 bss->ssid.wpa_passphrase = os_zalloc(cred->key_len + 1); 361 if (bss->ssid.wpa_passphrase) 362 os_memcpy(bss->ssid.wpa_passphrase, cred->key, 363 cred->key_len); 364 os_free(bss->ssid.wpa_psk); 365 bss->ssid.wpa_psk = NULL; 366 } else if (cred->key_len == 64) { 367 os_free(bss->ssid.wpa_psk); 368 bss->ssid.wpa_psk = 369 os_zalloc(sizeof(struct hostapd_wpa_psk)); 370 if (bss->ssid.wpa_psk && 371 hexstr2bin((const char *) cred->key, 372 bss->ssid.wpa_psk->psk, PMK_LEN) == 0) { 373 bss->ssid.wpa_psk->group = 1; 374 os_free(bss->ssid.wpa_passphrase); 375 bss->ssid.wpa_passphrase = NULL; 376 } 377 } 378 bss->auth_algs = 1; 379 } else { 380 if ((cred->auth_type & WPS_AUTH_OPEN) && 381 (cred->auth_type & WPS_AUTH_SHARED)) 382 bss->auth_algs = 3; 383 else if (cred->auth_type & WPS_AUTH_SHARED) 384 bss->auth_algs = 2; 385 else 386 bss->auth_algs = 1; 387 if (cred->encr_type & WPS_ENCR_WEP && cred->key_idx > 0 && 388 cred->key_idx <= 4) { 389 struct hostapd_wep_keys *wep = &bss->ssid.wep; 390 int idx = cred->key_idx; 391 if (idx) 392 idx--; 393 wep->idx = idx; 394 if (cred->key_len == 10 || cred->key_len == 26) { 395 os_free(wep->key[idx]); 396 wep->key[idx] = os_malloc(cred->key_len / 2); 397 if (wep->key[idx] == NULL || 398 hexstr2bin((const char *) cred->key, 399 wep->key[idx], 400 cred->key_len / 2)) 401 return -1; 402 wep->len[idx] = cred->key_len / 2; 403 } else { 404 os_free(wep->key[idx]); 405 wep->key[idx] = os_malloc(cred->key_len); 406 if (wep->key[idx] == NULL) 407 return -1; 408 os_memcpy(wep->key[idx], cred->key, 409 cred->key_len); 410 wep->len[idx] = cred->key_len; 411 } 412 wep->keys_set = 1; 413 } 414 } 415 416 /* Schedule configuration reload after short period of time to allow 417 * EAP-WSC to be finished. 418 */ 419 eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface, 420 NULL); 421 422 return 0; 423} 424 425 426static int hapd_wps_cred_cb(struct hostapd_data *hapd, void *ctx) 427{ 428 const struct wps_credential *cred = ctx; 429 FILE *oconf, *nconf; 430 size_t len, i; 431 char *tmp_fname; 432 char buf[1024]; 433 int multi_bss; 434 int wpa; 435 436 if (hapd->wps == NULL) 437 return 0; 438 439 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute", 440 cred->cred_attr, cred->cred_attr_len); 441 442 wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings"); 443 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len); 444 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x", 445 cred->auth_type); 446 wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type); 447 wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx); 448 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key", 449 cred->key, cred->key_len); 450 wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR, 451 MAC2STR(cred->mac_addr)); 452 453 if ((hapd->conf->wps_cred_processing == 1 || 454 hapd->conf->wps_cred_processing == 2) && cred->cred_attr) { 455 hapd_new_ap_event(hapd, cred->cred_attr, cred->cred_attr_len); 456 } else if (hapd->conf->wps_cred_processing == 1 || 457 hapd->conf->wps_cred_processing == 2) { 458 struct wpabuf *attr; 459 attr = wpabuf_alloc(200); 460 if (attr && wps_build_credential_wrap(attr, cred) == 0) 461 hapd_new_ap_event(hapd, wpabuf_head_u8(attr), 462 wpabuf_len(attr)); 463 wpabuf_free(attr); 464 } else 465 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS); 466 467 if (hapd->conf->wps_cred_processing == 1) 468 return 0; 469 470 os_memcpy(hapd->wps->ssid, cred->ssid, cred->ssid_len); 471 hapd->wps->ssid_len = cred->ssid_len; 472 hapd->wps->encr_types = cred->encr_type; 473 hapd->wps->auth_types = cred->auth_type; 474 if (cred->key_len == 0) { 475 os_free(hapd->wps->network_key); 476 hapd->wps->network_key = NULL; 477 hapd->wps->network_key_len = 0; 478 } else { 479 if (hapd->wps->network_key == NULL || 480 hapd->wps->network_key_len < cred->key_len) { 481 hapd->wps->network_key_len = 0; 482 os_free(hapd->wps->network_key); 483 hapd->wps->network_key = os_malloc(cred->key_len); 484 if (hapd->wps->network_key == NULL) 485 return -1; 486 } 487 hapd->wps->network_key_len = cred->key_len; 488 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len); 489 } 490 hapd->wps->wps_state = WPS_STATE_CONFIGURED; 491 492 if (hapd->iface->config_fname == NULL) 493 return hapd_wps_reconfig_in_memory(hapd, cred); 494 len = os_strlen(hapd->iface->config_fname) + 5; 495 tmp_fname = os_malloc(len); 496 if (tmp_fname == NULL) 497 return -1; 498 os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname); 499 500 oconf = fopen(hapd->iface->config_fname, "r"); 501 if (oconf == NULL) { 502 wpa_printf(MSG_WARNING, "WPS: Could not open current " 503 "configuration file"); 504 os_free(tmp_fname); 505 return -1; 506 } 507 508 nconf = fopen(tmp_fname, "w"); 509 if (nconf == NULL) { 510 wpa_printf(MSG_WARNING, "WPS: Could not write updated " 511 "configuration file"); 512 os_free(tmp_fname); 513 fclose(oconf); 514 return -1; 515 } 516 517 fprintf(nconf, "# WPS configuration - START\n"); 518 519 fprintf(nconf, "wps_state=2\n"); 520 521 if (is_hex(cred->ssid, cred->ssid_len)) { 522 fprintf(nconf, "ssid2="); 523 for (i = 0; i < cred->ssid_len; i++) 524 fprintf(nconf, "%02x", cred->ssid[i]); 525 fprintf(nconf, "\n"); 526 } else { 527 fprintf(nconf, "ssid="); 528 for (i = 0; i < cred->ssid_len; i++) 529 fputc(cred->ssid[i], nconf); 530 fprintf(nconf, "\n"); 531 } 532 533 if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) && 534 (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))) 535 wpa = 3; 536 else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) 537 wpa = 2; 538 else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)) 539 wpa = 1; 540 else 541 wpa = 0; 542 543 if (wpa) { 544 char *prefix; 545 fprintf(nconf, "wpa=%d\n", wpa); 546 547 fprintf(nconf, "wpa_key_mgmt="); 548 prefix = ""; 549 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) { 550 fprintf(nconf, "WPA-EAP"); 551 prefix = " "; 552 } 553 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK)) 554 fprintf(nconf, "%sWPA-PSK", prefix); 555 fprintf(nconf, "\n"); 556 557 fprintf(nconf, "wpa_pairwise="); 558 prefix = ""; 559 if (cred->encr_type & WPS_ENCR_AES) { 560 fprintf(nconf, "CCMP"); 561 prefix = " "; 562 } 563 if (cred->encr_type & WPS_ENCR_TKIP) { 564 fprintf(nconf, "%sTKIP", prefix); 565 } 566 fprintf(nconf, "\n"); 567 568 if (cred->key_len >= 8 && cred->key_len < 64) { 569 fprintf(nconf, "wpa_passphrase="); 570 for (i = 0; i < cred->key_len; i++) 571 fputc(cred->key[i], nconf); 572 fprintf(nconf, "\n"); 573 } else if (cred->key_len == 64) { 574 fprintf(nconf, "wpa_psk="); 575 for (i = 0; i < cred->key_len; i++) 576 fputc(cred->key[i], nconf); 577 fprintf(nconf, "\n"); 578 } else { 579 wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu " 580 "for WPA/WPA2", 581 (unsigned long) cred->key_len); 582 } 583 584 fprintf(nconf, "auth_algs=1\n"); 585 } else { 586 if ((cred->auth_type & WPS_AUTH_OPEN) && 587 (cred->auth_type & WPS_AUTH_SHARED)) 588 fprintf(nconf, "auth_algs=3\n"); 589 else if (cred->auth_type & WPS_AUTH_SHARED) 590 fprintf(nconf, "auth_algs=2\n"); 591 else 592 fprintf(nconf, "auth_algs=1\n"); 593 594 if (cred->encr_type & WPS_ENCR_WEP && cred->key_idx <= 4) { 595 int key_idx = cred->key_idx; 596 if (key_idx) 597 key_idx--; 598 fprintf(nconf, "wep_default_key=%d\n", key_idx); 599 fprintf(nconf, "wep_key%d=", key_idx); 600 if (cred->key_len == 10 || cred->key_len == 26) { 601 /* WEP key as a hex string */ 602 for (i = 0; i < cred->key_len; i++) 603 fputc(cred->key[i], nconf); 604 } else { 605 /* Raw WEP key; convert to hex */ 606 for (i = 0; i < cred->key_len; i++) 607 fprintf(nconf, "%02x", cred->key[i]); 608 } 609 fprintf(nconf, "\n"); 610 } 611 } 612 613 fprintf(nconf, "# WPS configuration - END\n"); 614 615 multi_bss = 0; 616 while (fgets(buf, sizeof(buf), oconf)) { 617 if (os_strncmp(buf, "bss=", 4) == 0) 618 multi_bss = 1; 619 if (!multi_bss && 620 (str_starts(buf, "ssid=") || 621 str_starts(buf, "ssid2=") || 622 str_starts(buf, "auth_algs=") || 623 str_starts(buf, "wep_default_key=") || 624 str_starts(buf, "wep_key") || 625 str_starts(buf, "wps_state=") || 626 str_starts(buf, "wpa=") || 627 str_starts(buf, "wpa_psk=") || 628 str_starts(buf, "wpa_pairwise=") || 629 str_starts(buf, "rsn_pairwise=") || 630 str_starts(buf, "wpa_key_mgmt=") || 631 str_starts(buf, "wpa_passphrase="))) { 632 fprintf(nconf, "#WPS# %s", buf); 633 } else 634 fprintf(nconf, "%s", buf); 635 } 636 637 fclose(nconf); 638 fclose(oconf); 639 640 if (rename(tmp_fname, hapd->iface->config_fname) < 0) { 641 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated " 642 "configuration file: %s", strerror(errno)); 643 os_free(tmp_fname); 644 return -1; 645 } 646 647 os_free(tmp_fname); 648 649 /* Schedule configuration reload after short period of time to allow 650 * EAP-WSC to be finished. 651 */ 652 eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface, 653 NULL); 654 655 wpa_printf(MSG_DEBUG, "WPS: AP configuration updated"); 656 657 return 0; 658} 659 660 661static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred) 662{ 663 struct hostapd_data *hapd = ctx; 664 return hostapd_wps_for_each(hapd, hapd_wps_cred_cb, (void *) cred); 665} 666 667 668static void hostapd_wps_reenable_ap_pin(void *eloop_data, void *user_ctx) 669{ 670 struct hostapd_data *hapd = eloop_data; 671 672 if (hapd->conf->ap_setup_locked) 673 return; 674 if (hapd->ap_pin_failures_consecutive >= 10) 675 return; 676 677 wpa_printf(MSG_DEBUG, "WPS: Re-enable AP PIN"); 678 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED); 679 hapd->wps->ap_setup_locked = 0; 680 wps_registrar_update_ie(hapd->wps->registrar); 681} 682 683 684static int wps_pwd_auth_fail(struct hostapd_data *hapd, void *ctx) 685{ 686 struct wps_event_pwd_auth_fail *data = ctx; 687 688 if (!data->enrollee || hapd->conf->ap_pin == NULL || hapd->wps == NULL) 689 return 0; 690 691 /* 692 * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup 693 * for some time if this happens multiple times to slow down brute 694 * force attacks. 695 */ 696 hapd->ap_pin_failures++; 697 hapd->ap_pin_failures_consecutive++; 698 wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u " 699 "(%u consecutive)", 700 hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive); 701 if (hapd->ap_pin_failures < 3) 702 return 0; 703 704 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED); 705 hapd->wps->ap_setup_locked = 1; 706 707 wps_registrar_update_ie(hapd->wps->registrar); 708 709 if (!hapd->conf->ap_setup_locked && 710 hapd->ap_pin_failures_consecutive >= 10) { 711 /* 712 * In indefinite lockdown - disable automatic AP PIN 713 * reenablement. 714 */ 715 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 716 wpa_printf(MSG_DEBUG, "WPS: AP PIN disabled indefinitely"); 717 } else if (!hapd->conf->ap_setup_locked) { 718 if (hapd->ap_pin_lockout_time == 0) 719 hapd->ap_pin_lockout_time = 60; 720 else if (hapd->ap_pin_lockout_time < 365 * 24 * 60 * 60 && 721 (hapd->ap_pin_failures % 3) == 0) 722 hapd->ap_pin_lockout_time *= 2; 723 724 wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN for %u seconds", 725 hapd->ap_pin_lockout_time); 726 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 727 eloop_register_timeout(hapd->ap_pin_lockout_time, 0, 728 hostapd_wps_reenable_ap_pin, hapd, 729 NULL); 730 } 731 732 return 0; 733} 734 735 736static void hostapd_pwd_auth_fail(struct hostapd_data *hapd, 737 struct wps_event_pwd_auth_fail *data) 738{ 739 /* Update WPS Status - Authentication Failure */ 740 wpa_printf(MSG_DEBUG, "WPS: Authentication failure update"); 741 hapd->wps_stats.status = WPS_STATUS_FAILURE; 742 hapd->wps_stats.failure_reason = WPS_EI_AUTH_FAILURE; 743 os_memcpy(hapd->wps_stats.peer_addr, data->peer_macaddr, ETH_ALEN); 744 745 hostapd_wps_for_each(hapd, wps_pwd_auth_fail, data); 746} 747 748 749static int wps_ap_pin_success(struct hostapd_data *hapd, void *ctx) 750{ 751 if (hapd->conf->ap_pin == NULL || hapd->wps == NULL) 752 return 0; 753 754 if (hapd->ap_pin_failures_consecutive == 0) 755 return 0; 756 757 wpa_printf(MSG_DEBUG, "WPS: Clear consecutive AP PIN failure counter " 758 "- total validation failures %u (%u consecutive)", 759 hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive); 760 hapd->ap_pin_failures_consecutive = 0; 761 762 return 0; 763} 764 765 766static void hostapd_wps_ap_pin_success(struct hostapd_data *hapd) 767{ 768 hostapd_wps_for_each(hapd, wps_ap_pin_success, NULL); 769} 770 771 772static void hostapd_wps_event_pbc_overlap(struct hostapd_data *hapd) 773{ 774 /* Update WPS Status - PBC Overlap */ 775 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_OVERLAP; 776} 777 778 779static void hostapd_wps_event_pbc_timeout(struct hostapd_data *hapd) 780{ 781 /* Update WPS PBC Status:PBC Timeout */ 782 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_TIMEOUT; 783} 784 785 786static void hostapd_wps_event_pbc_active(struct hostapd_data *hapd) 787{ 788 /* Update WPS PBC status - Active */ 789 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_ACTIVE; 790} 791 792 793static void hostapd_wps_event_pbc_disable(struct hostapd_data *hapd) 794{ 795 /* Update WPS PBC status - Active */ 796 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE; 797} 798 799 800static void hostapd_wps_event_success(struct hostapd_data *hapd, 801 struct wps_event_success *success) 802{ 803 /* Update WPS status - Success */ 804 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE; 805 hapd->wps_stats.status = WPS_STATUS_SUCCESS; 806 os_memcpy(hapd->wps_stats.peer_addr, success->peer_macaddr, ETH_ALEN); 807} 808 809 810static void hostapd_wps_event_fail(struct hostapd_data *hapd, 811 struct wps_event_fail *fail) 812{ 813 /* Update WPS status - Failure */ 814 hapd->wps_stats.status = WPS_STATUS_FAILURE; 815 os_memcpy(hapd->wps_stats.peer_addr, fail->peer_macaddr, ETH_ALEN); 816 817 hapd->wps_stats.failure_reason = fail->error_indication; 818 819 if (fail->error_indication > 0 && 820 fail->error_indication < NUM_WPS_EI_VALUES) { 821 wpa_msg(hapd->msg_ctx, MSG_INFO, 822 WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)", 823 fail->msg, fail->config_error, fail->error_indication, 824 wps_ei_str(fail->error_indication)); 825 } else { 826 wpa_msg(hapd->msg_ctx, MSG_INFO, 827 WPS_EVENT_FAIL "msg=%d config_error=%d", 828 fail->msg, fail->config_error); 829 } 830} 831 832 833static void hostapd_wps_event_cb(void *ctx, enum wps_event event, 834 union wps_event_data *data) 835{ 836 struct hostapd_data *hapd = ctx; 837 838 switch (event) { 839 case WPS_EV_M2D: 840 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_M2D); 841 break; 842 case WPS_EV_FAIL: 843 hostapd_wps_event_fail(hapd, &data->fail); 844 break; 845 case WPS_EV_SUCCESS: 846 hostapd_wps_event_success(hapd, &data->success); 847 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_SUCCESS); 848 break; 849 case WPS_EV_PWD_AUTH_FAIL: 850 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail); 851 break; 852 case WPS_EV_PBC_OVERLAP: 853 hostapd_wps_event_pbc_overlap(hapd); 854 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_OVERLAP); 855 break; 856 case WPS_EV_PBC_TIMEOUT: 857 hostapd_wps_event_pbc_timeout(hapd); 858 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_TIMEOUT); 859 break; 860 case WPS_EV_PBC_ACTIVE: 861 hostapd_wps_event_pbc_active(hapd); 862 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ACTIVE); 863 break; 864 case WPS_EV_PBC_DISABLE: 865 hostapd_wps_event_pbc_disable(hapd); 866 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_DISABLE); 867 break; 868 case WPS_EV_ER_AP_ADD: 869 break; 870 case WPS_EV_ER_AP_REMOVE: 871 break; 872 case WPS_EV_ER_ENROLLEE_ADD: 873 break; 874 case WPS_EV_ER_ENROLLEE_REMOVE: 875 break; 876 case WPS_EV_ER_AP_SETTINGS: 877 break; 878 case WPS_EV_ER_SET_SELECTED_REGISTRAR: 879 break; 880 case WPS_EV_AP_PIN_SUCCESS: 881 hostapd_wps_ap_pin_success(hapd); 882 break; 883 } 884 if (hapd->wps_event_cb) 885 hapd->wps_event_cb(hapd->wps_event_cb_ctx, event, data); 886} 887 888 889static int hostapd_wps_rf_band_cb(void *ctx) 890{ 891 struct hostapd_data *hapd = ctx; 892 893 return hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ? 894 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */ 895} 896 897 898static void hostapd_wps_clear_ies(struct hostapd_data *hapd) 899{ 900 wpabuf_free(hapd->wps_beacon_ie); 901 hapd->wps_beacon_ie = NULL; 902 903 wpabuf_free(hapd->wps_probe_resp_ie); 904 hapd->wps_probe_resp_ie = NULL; 905 906 hostapd_set_ap_wps_ie(hapd); 907} 908 909 910static int get_uuid_cb(struct hostapd_iface *iface, void *ctx) 911{ 912 const u8 **uuid = ctx; 913 size_t j; 914 915 if (iface == NULL) 916 return 0; 917 for (j = 0; j < iface->num_bss; j++) { 918 struct hostapd_data *hapd = iface->bss[j]; 919 if (hapd->wps && !hapd->conf->wps_independent && 920 !is_nil_uuid(hapd->wps->uuid)) { 921 *uuid = hapd->wps->uuid; 922 return 1; 923 } 924 } 925 926 return 0; 927} 928 929 930static const u8 * get_own_uuid(struct hostapd_iface *iface) 931{ 932 const u8 *uuid; 933 if (iface->interfaces == NULL || 934 iface->interfaces->for_each_interface == NULL) 935 return NULL; 936 uuid = NULL; 937 iface->interfaces->for_each_interface(iface->interfaces, get_uuid_cb, 938 &uuid); 939 return uuid; 940} 941 942 943static int count_interface_cb(struct hostapd_iface *iface, void *ctx) 944{ 945 int *count= ctx; 946 (*count)++; 947 return 0; 948} 949 950 951static int interface_count(struct hostapd_iface *iface) 952{ 953 int count = 0; 954 if (iface->interfaces == NULL || 955 iface->interfaces->for_each_interface == NULL) 956 return 0; 957 iface->interfaces->for_each_interface(iface->interfaces, 958 count_interface_cb, &count); 959 return count; 960} 961 962 963static int hostapd_wps_set_vendor_ext(struct hostapd_data *hapd, 964 struct wps_context *wps) 965{ 966 int i; 967 968 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) { 969 wpabuf_free(wps->dev.vendor_ext[i]); 970 wps->dev.vendor_ext[i] = NULL; 971 972 if (hapd->conf->wps_vendor_ext[i] == NULL) 973 continue; 974 975 wps->dev.vendor_ext[i] = 976 wpabuf_dup(hapd->conf->wps_vendor_ext[i]); 977 if (wps->dev.vendor_ext[i] == NULL) { 978 while (--i >= 0) 979 wpabuf_free(wps->dev.vendor_ext[i]); 980 return -1; 981 } 982 } 983 984 return 0; 985} 986 987 988int hostapd_init_wps(struct hostapd_data *hapd, 989 struct hostapd_bss_config *conf) 990{ 991 struct wps_context *wps; 992 struct wps_registrar_config cfg; 993 994 if (conf->wps_state == 0) { 995 hostapd_wps_clear_ies(hapd); 996 return 0; 997 } 998 999 wps = os_zalloc(sizeof(*wps)); 1000 if (wps == NULL) 1001 return -1; 1002 1003 wps->cred_cb = hostapd_wps_cred_cb; 1004 wps->event_cb = hostapd_wps_event_cb; 1005 wps->rf_band_cb = hostapd_wps_rf_band_cb; 1006 wps->cb_ctx = hapd; 1007 1008 os_memset(&cfg, 0, sizeof(cfg)); 1009 wps->wps_state = hapd->conf->wps_state; 1010 wps->ap_setup_locked = hapd->conf->ap_setup_locked; 1011 if (is_nil_uuid(hapd->conf->uuid)) { 1012 const u8 *uuid; 1013 uuid = get_own_uuid(hapd->iface); 1014 if (uuid && !conf->wps_independent) { 1015 os_memcpy(wps->uuid, uuid, UUID_LEN); 1016 wpa_hexdump(MSG_DEBUG, "WPS: Clone UUID from another " 1017 "interface", wps->uuid, UUID_LEN); 1018 } else { 1019 uuid_gen_mac_addr(hapd->own_addr, wps->uuid); 1020 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC " 1021 "address", wps->uuid, UUID_LEN); 1022 } 1023 } else { 1024 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN); 1025 wpa_hexdump(MSG_DEBUG, "WPS: Use configured UUID", 1026 wps->uuid, UUID_LEN); 1027 } 1028 wps->ssid_len = hapd->conf->ssid.ssid_len; 1029 os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len); 1030 wps->ap = 1; 1031 os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN); 1032 wps->dev.device_name = hapd->conf->device_name ? 1033 os_strdup(hapd->conf->device_name) : NULL; 1034 wps->dev.manufacturer = hapd->conf->manufacturer ? 1035 os_strdup(hapd->conf->manufacturer) : NULL; 1036 wps->dev.model_name = hapd->conf->model_name ? 1037 os_strdup(hapd->conf->model_name) : NULL; 1038 wps->dev.model_number = hapd->conf->model_number ? 1039 os_strdup(hapd->conf->model_number) : NULL; 1040 wps->dev.serial_number = hapd->conf->serial_number ? 1041 os_strdup(hapd->conf->serial_number) : NULL; 1042 wps->config_methods = 1043 wps_config_methods_str2bin(hapd->conf->config_methods); 1044#ifdef CONFIG_WPS2 1045 if ((wps->config_methods & 1046 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY | 1047 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) { 1048 wpa_printf(MSG_INFO, "WPS: Converting display to " 1049 "virtual_display for WPS 2.0 compliance"); 1050 wps->config_methods |= WPS_CONFIG_VIRT_DISPLAY; 1051 } 1052 if ((wps->config_methods & 1053 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON | 1054 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) { 1055 wpa_printf(MSG_INFO, "WPS: Converting push_button to " 1056 "virtual_push_button for WPS 2.0 compliance"); 1057 wps->config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON; 1058 } 1059#endif /* CONFIG_WPS2 */ 1060 os_memcpy(wps->dev.pri_dev_type, hapd->conf->device_type, 1061 WPS_DEV_TYPE_LEN); 1062 1063 if (hostapd_wps_set_vendor_ext(hapd, wps) < 0) { 1064 os_free(wps); 1065 return -1; 1066 } 1067 1068 wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version); 1069 1070 if (conf->wps_rf_bands) { 1071 wps->dev.rf_bands = conf->wps_rf_bands; 1072 } else { 1073 wps->dev.rf_bands = 1074 hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ? 1075 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */ 1076 } 1077 1078 if (conf->wpa & WPA_PROTO_RSN) { 1079 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) 1080 wps->auth_types |= WPS_AUTH_WPA2PSK; 1081 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) 1082 wps->auth_types |= WPS_AUTH_WPA2; 1083 1084 if (conf->rsn_pairwise & WPA_CIPHER_CCMP) 1085 wps->encr_types |= WPS_ENCR_AES; 1086 if (conf->rsn_pairwise & WPA_CIPHER_TKIP) 1087 wps->encr_types |= WPS_ENCR_TKIP; 1088 } 1089 1090 if (conf->wpa & WPA_PROTO_WPA) { 1091 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) 1092 wps->auth_types |= WPS_AUTH_WPAPSK; 1093 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) 1094 wps->auth_types |= WPS_AUTH_WPA; 1095 1096 if (conf->wpa_pairwise & WPA_CIPHER_CCMP) 1097 wps->encr_types |= WPS_ENCR_AES; 1098 if (conf->wpa_pairwise & WPA_CIPHER_TKIP) 1099 wps->encr_types |= WPS_ENCR_TKIP; 1100 } 1101 1102 if (conf->ssid.security_policy == SECURITY_PLAINTEXT) { 1103 wps->encr_types |= WPS_ENCR_NONE; 1104 wps->auth_types |= WPS_AUTH_OPEN; 1105 } else if (conf->ssid.security_policy == SECURITY_STATIC_WEP) { 1106 wps->encr_types |= WPS_ENCR_WEP; 1107 if (conf->auth_algs & WPA_AUTH_ALG_OPEN) 1108 wps->auth_types |= WPS_AUTH_OPEN; 1109 if (conf->auth_algs & WPA_AUTH_ALG_SHARED) 1110 wps->auth_types |= WPS_AUTH_SHARED; 1111 } else if (conf->ssid.security_policy == SECURITY_IEEE_802_1X) { 1112 wps->auth_types |= WPS_AUTH_OPEN; 1113 if (conf->default_wep_key_len) 1114 wps->encr_types |= WPS_ENCR_WEP; 1115 else 1116 wps->encr_types |= WPS_ENCR_NONE; 1117 } 1118 1119 if (conf->ssid.wpa_psk_file) { 1120 /* Use per-device PSKs */ 1121 } else if (conf->ssid.wpa_passphrase) { 1122 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase); 1123 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase); 1124 } else if (conf->ssid.wpa_psk) { 1125 wps->network_key = os_malloc(2 * PMK_LEN + 1); 1126 if (wps->network_key == NULL) { 1127 os_free(wps); 1128 return -1; 1129 } 1130 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1, 1131 conf->ssid.wpa_psk->psk, PMK_LEN); 1132 wps->network_key_len = 2 * PMK_LEN; 1133 } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) { 1134 wps->network_key = os_malloc(conf->ssid.wep.len[0]); 1135 if (wps->network_key == NULL) { 1136 os_free(wps); 1137 return -1; 1138 } 1139 os_memcpy(wps->network_key, conf->ssid.wep.key[0], 1140 conf->ssid.wep.len[0]); 1141 wps->network_key_len = conf->ssid.wep.len[0]; 1142 } 1143 1144 if (conf->ssid.wpa_psk) { 1145 os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN); 1146 wps->psk_set = 1; 1147 } 1148 1149 if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) { 1150 /* Override parameters to enable security by default */ 1151 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK; 1152 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP; 1153 } 1154 1155 wps->ap_settings = conf->ap_settings; 1156 wps->ap_settings_len = conf->ap_settings_len; 1157 1158 cfg.new_psk_cb = hostapd_wps_new_psk_cb; 1159 cfg.set_ie_cb = hostapd_wps_set_ie_cb; 1160 cfg.pin_needed_cb = hostapd_wps_pin_needed_cb; 1161 cfg.reg_success_cb = hostapd_wps_reg_success_cb; 1162 cfg.enrollee_seen_cb = hostapd_wps_enrollee_seen_cb; 1163 cfg.cb_ctx = hapd; 1164 cfg.skip_cred_build = conf->skip_cred_build; 1165 cfg.extra_cred = conf->extra_cred; 1166 cfg.extra_cred_len = conf->extra_cred_len; 1167 cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) && 1168 conf->skip_cred_build; 1169 if (conf->ssid.security_policy == SECURITY_STATIC_WEP) 1170 cfg.static_wep_only = 1; 1171 cfg.dualband = interface_count(hapd->iface) > 1; 1172 if ((wps->dev.rf_bands & (WPS_RF_50GHZ | WPS_RF_24GHZ)) == 1173 (WPS_RF_50GHZ | WPS_RF_24GHZ)) 1174 cfg.dualband = 1; 1175 if (cfg.dualband) 1176 wpa_printf(MSG_DEBUG, "WPS: Dualband AP"); 1177 cfg.force_per_enrollee_psk = conf->force_per_enrollee_psk; 1178 1179 wps->registrar = wps_registrar_init(wps, &cfg); 1180 if (wps->registrar == NULL) { 1181 wpa_printf(MSG_ERROR, "Failed to initialize WPS Registrar"); 1182 os_free(wps->network_key); 1183 os_free(wps); 1184 return -1; 1185 } 1186 1187#ifdef CONFIG_WPS_UPNP 1188 wps->friendly_name = hapd->conf->friendly_name; 1189 wps->manufacturer_url = hapd->conf->manufacturer_url; 1190 wps->model_description = hapd->conf->model_description; 1191 wps->model_url = hapd->conf->model_url; 1192 wps->upc = hapd->conf->upc; 1193#endif /* CONFIG_WPS_UPNP */ 1194 1195 hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd); 1196 1197 hapd->wps = wps; 1198 1199 return 0; 1200} 1201 1202 1203int hostapd_init_wps_complete(struct hostapd_data *hapd) 1204{ 1205 struct wps_context *wps = hapd->wps; 1206 1207 if (wps == NULL) 1208 return 0; 1209 1210#ifdef CONFIG_WPS_UPNP 1211 if (hostapd_wps_upnp_init(hapd, wps) < 0) { 1212 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP"); 1213 wps_registrar_deinit(wps->registrar); 1214 os_free(wps->network_key); 1215 os_free(wps); 1216 hapd->wps = NULL; 1217 return -1; 1218 } 1219#endif /* CONFIG_WPS_UPNP */ 1220 1221 return 0; 1222} 1223 1224 1225static void hostapd_wps_nfc_clear(struct wps_context *wps) 1226{ 1227#ifdef CONFIG_WPS_NFC 1228 wpa_printf(MSG_DEBUG, "WPS: Clear NFC Tag context %p", wps); 1229 wps->ap_nfc_dev_pw_id = 0; 1230 wpabuf_free(wps->ap_nfc_dh_pubkey); 1231 wps->ap_nfc_dh_pubkey = NULL; 1232 wpabuf_free(wps->ap_nfc_dh_privkey); 1233 wps->ap_nfc_dh_privkey = NULL; 1234 wpabuf_free(wps->ap_nfc_dev_pw); 1235 wps->ap_nfc_dev_pw = NULL; 1236#endif /* CONFIG_WPS_NFC */ 1237} 1238 1239 1240void hostapd_deinit_wps(struct hostapd_data *hapd) 1241{ 1242 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 1243 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1244 eloop_cancel_timeout(wps_reload_config, hapd->iface, NULL); 1245 if (hapd->wps == NULL) 1246 return; 1247#ifdef CONFIG_WPS_UPNP 1248 hostapd_wps_upnp_deinit(hapd); 1249#endif /* CONFIG_WPS_UPNP */ 1250 wps_registrar_deinit(hapd->wps->registrar); 1251 os_free(hapd->wps->network_key); 1252 wps_device_data_free(&hapd->wps->dev); 1253 wpabuf_free(hapd->wps->dh_pubkey); 1254 wpabuf_free(hapd->wps->dh_privkey); 1255 wps_free_pending_msgs(hapd->wps->upnp_msgs); 1256 hostapd_wps_nfc_clear(hapd->wps); 1257 os_free(hapd->wps); 1258 hapd->wps = NULL; 1259 hostapd_wps_clear_ies(hapd); 1260} 1261 1262 1263void hostapd_update_wps(struct hostapd_data *hapd) 1264{ 1265 if (hapd->wps == NULL) 1266 return; 1267 1268#ifdef CONFIG_WPS_UPNP 1269 hapd->wps->friendly_name = hapd->conf->friendly_name; 1270 hapd->wps->manufacturer_url = hapd->conf->manufacturer_url; 1271 hapd->wps->model_description = hapd->conf->model_description; 1272 hapd->wps->model_url = hapd->conf->model_url; 1273 hapd->wps->upc = hapd->conf->upc; 1274#endif /* CONFIG_WPS_UPNP */ 1275 1276 hostapd_wps_set_vendor_ext(hapd, hapd->wps); 1277 1278 if (hapd->conf->wps_state) 1279 wps_registrar_update_ie(hapd->wps->registrar); 1280 else 1281 hostapd_deinit_wps(hapd); 1282} 1283 1284 1285struct wps_add_pin_data { 1286 const u8 *addr; 1287 const u8 *uuid; 1288 const u8 *pin; 1289 size_t pin_len; 1290 int timeout; 1291 int added; 1292}; 1293 1294 1295static int wps_add_pin(struct hostapd_data *hapd, void *ctx) 1296{ 1297 struct wps_add_pin_data *data = ctx; 1298 int ret; 1299 1300 if (hapd->wps == NULL) 1301 return 0; 1302 ret = wps_registrar_add_pin(hapd->wps->registrar, data->addr, 1303 data->uuid, data->pin, data->pin_len, 1304 data->timeout); 1305 if (ret == 0) 1306 data->added++; 1307 return ret; 1308} 1309 1310 1311int hostapd_wps_add_pin(struct hostapd_data *hapd, const u8 *addr, 1312 const char *uuid, const char *pin, int timeout) 1313{ 1314 u8 u[UUID_LEN]; 1315 struct wps_add_pin_data data; 1316 1317 data.addr = addr; 1318 data.uuid = u; 1319 data.pin = (const u8 *) pin; 1320 data.pin_len = os_strlen(pin); 1321 data.timeout = timeout; 1322 data.added = 0; 1323 1324 if (os_strcmp(uuid, "any") == 0) 1325 data.uuid = NULL; 1326 else { 1327 if (uuid_str2bin(uuid, u)) 1328 return -1; 1329 data.uuid = u; 1330 } 1331 if (hostapd_wps_for_each(hapd, wps_add_pin, &data) < 0) 1332 return -1; 1333 return data.added ? 0 : -1; 1334} 1335 1336 1337static int wps_button_pushed(struct hostapd_data *hapd, void *ctx) 1338{ 1339 const u8 *p2p_dev_addr = ctx; 1340 if (hapd->wps == NULL) 1341 return 0; 1342 return wps_registrar_button_pushed(hapd->wps->registrar, p2p_dev_addr); 1343} 1344 1345 1346int hostapd_wps_button_pushed(struct hostapd_data *hapd, 1347 const u8 *p2p_dev_addr) 1348{ 1349 return hostapd_wps_for_each(hapd, wps_button_pushed, 1350 (void *) p2p_dev_addr); 1351} 1352 1353 1354static int wps_cancel(struct hostapd_data *hapd, void *ctx) 1355{ 1356 if (hapd->wps == NULL) 1357 return 0; 1358 1359 wps_registrar_wps_cancel(hapd->wps->registrar); 1360 ap_for_each_sta(hapd, ap_sta_wps_cancel, NULL); 1361 1362 return 0; 1363} 1364 1365 1366int hostapd_wps_cancel(struct hostapd_data *hapd) 1367{ 1368 return hostapd_wps_for_each(hapd, wps_cancel, NULL); 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 p = os_zalloc(sizeof(*p)); 1479 if (p == NULL) 1480 return -1; 1481 os_memcpy(p->addr, sta->addr, ETH_ALEN); 1482 p->msg = wpabuf_dup(msg); 1483 p->type = msg_type; 1484 p->next = hapd->wps->upnp_msgs; 1485 hapd->wps->upnp_msgs = p; 1486 1487 return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap); 1488} 1489 1490 1491static int hostapd_wps_upnp_init(struct hostapd_data *hapd, 1492 struct wps_context *wps) 1493{ 1494 struct upnp_wps_device_ctx *ctx; 1495 1496 if (!hapd->conf->upnp_iface) 1497 return 0; 1498 ctx = os_zalloc(sizeof(*ctx)); 1499 if (ctx == NULL) 1500 return -1; 1501 1502 ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response; 1503 if (hapd->conf->ap_pin) 1504 ctx->ap_pin = os_strdup(hapd->conf->ap_pin); 1505 1506 hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd, 1507 hapd->conf->upnp_iface); 1508 if (hapd->wps_upnp == NULL) 1509 return -1; 1510 wps->wps_upnp = hapd->wps_upnp; 1511 1512 return 0; 1513} 1514 1515 1516static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd) 1517{ 1518 upnp_wps_device_deinit(hapd->wps_upnp, hapd); 1519} 1520 1521#endif /* CONFIG_WPS_UPNP */ 1522 1523 1524int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr, 1525 char *buf, size_t buflen) 1526{ 1527 if (hapd->wps == NULL) 1528 return 0; 1529 return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen); 1530} 1531 1532 1533static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx) 1534{ 1535 struct hostapd_data *hapd = eloop_data; 1536 wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out"); 1537 hostapd_wps_ap_pin_disable(hapd); 1538 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_PIN_DISABLED); 1539} 1540 1541 1542static void hostapd_wps_ap_pin_enable(struct hostapd_data *hapd, int timeout) 1543{ 1544 wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout); 1545 hapd->ap_pin_failures = 0; 1546 hapd->ap_pin_failures_consecutive = 0; 1547 hapd->conf->ap_setup_locked = 0; 1548 if (hapd->wps->ap_setup_locked) { 1549 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED); 1550 hapd->wps->ap_setup_locked = 0; 1551 wps_registrar_update_ie(hapd->wps->registrar); 1552 } 1553 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1554 if (timeout > 0) 1555 eloop_register_timeout(timeout, 0, 1556 hostapd_wps_ap_pin_timeout, hapd, NULL); 1557} 1558 1559 1560static int wps_ap_pin_disable(struct hostapd_data *hapd, void *ctx) 1561{ 1562 os_free(hapd->conf->ap_pin); 1563 hapd->conf->ap_pin = NULL; 1564#ifdef CONFIG_WPS_UPNP 1565 upnp_wps_set_ap_pin(hapd->wps_upnp, NULL); 1566#endif /* CONFIG_WPS_UPNP */ 1567 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1568 return 0; 1569} 1570 1571 1572void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd) 1573{ 1574 wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN"); 1575 hostapd_wps_for_each(hapd, wps_ap_pin_disable, NULL); 1576} 1577 1578 1579struct wps_ap_pin_data { 1580 char pin_txt[9]; 1581 int timeout; 1582}; 1583 1584 1585static int wps_ap_pin_set(struct hostapd_data *hapd, void *ctx) 1586{ 1587 struct wps_ap_pin_data *data = ctx; 1588 os_free(hapd->conf->ap_pin); 1589 hapd->conf->ap_pin = os_strdup(data->pin_txt); 1590#ifdef CONFIG_WPS_UPNP 1591 upnp_wps_set_ap_pin(hapd->wps_upnp, data->pin_txt); 1592#endif /* CONFIG_WPS_UPNP */ 1593 hostapd_wps_ap_pin_enable(hapd, data->timeout); 1594 return 0; 1595} 1596 1597 1598const char * hostapd_wps_ap_pin_random(struct hostapd_data *hapd, int timeout) 1599{ 1600 unsigned int pin; 1601 struct wps_ap_pin_data data; 1602 1603 pin = wps_generate_pin(); 1604 os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%08u", pin); 1605 data.timeout = timeout; 1606 hostapd_wps_for_each(hapd, wps_ap_pin_set, &data); 1607 return hapd->conf->ap_pin; 1608} 1609 1610 1611const char * hostapd_wps_ap_pin_get(struct hostapd_data *hapd) 1612{ 1613 return hapd->conf->ap_pin; 1614} 1615 1616 1617int hostapd_wps_ap_pin_set(struct hostapd_data *hapd, const char *pin, 1618 int timeout) 1619{ 1620 struct wps_ap_pin_data data; 1621 int ret; 1622 1623 ret = os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%s", pin); 1624 if (ret < 0 || ret >= (int) sizeof(data.pin_txt)) 1625 return -1; 1626 data.timeout = timeout; 1627 return hostapd_wps_for_each(hapd, wps_ap_pin_set, &data); 1628} 1629 1630 1631static int wps_update_ie(struct hostapd_data *hapd, void *ctx) 1632{ 1633 if (hapd->wps) 1634 wps_registrar_update_ie(hapd->wps->registrar); 1635 return 0; 1636} 1637 1638 1639void hostapd_wps_update_ie(struct hostapd_data *hapd) 1640{ 1641 hostapd_wps_for_each(hapd, wps_update_ie, NULL); 1642} 1643 1644 1645int hostapd_wps_config_ap(struct hostapd_data *hapd, const char *ssid, 1646 const char *auth, const char *encr, const char *key) 1647{ 1648 struct wps_credential cred; 1649 size_t len; 1650 1651 os_memset(&cred, 0, sizeof(cred)); 1652 1653 len = os_strlen(ssid); 1654 if ((len & 1) || len > 2 * sizeof(cred.ssid) || 1655 hexstr2bin(ssid, cred.ssid, len / 2)) 1656 return -1; 1657 cred.ssid_len = len / 2; 1658 1659 if (os_strncmp(auth, "OPEN", 4) == 0) 1660 cred.auth_type = WPS_AUTH_OPEN; 1661 else if (os_strncmp(auth, "WPAPSK", 6) == 0) 1662 cred.auth_type = WPS_AUTH_WPAPSK; 1663 else if (os_strncmp(auth, "WPA2PSK", 7) == 0) 1664 cred.auth_type = WPS_AUTH_WPA2PSK; 1665 else 1666 return -1; 1667 1668 if (encr) { 1669 if (os_strncmp(encr, "NONE", 4) == 0) 1670 cred.encr_type = WPS_ENCR_NONE; 1671 else if (os_strncmp(encr, "WEP", 3) == 0) 1672 cred.encr_type = WPS_ENCR_WEP; 1673 else if (os_strncmp(encr, "TKIP", 4) == 0) 1674 cred.encr_type = WPS_ENCR_TKIP; 1675 else if (os_strncmp(encr, "CCMP", 4) == 0) 1676 cred.encr_type = WPS_ENCR_AES; 1677 else 1678 return -1; 1679 } else 1680 cred.encr_type = WPS_ENCR_NONE; 1681 1682 if (key) { 1683 len = os_strlen(key); 1684 if ((len & 1) || len > 2 * sizeof(cred.key) || 1685 hexstr2bin(key, cred.key, len / 2)) 1686 return -1; 1687 cred.key_len = len / 2; 1688 } 1689 1690 return wps_registrar_config_ap(hapd->wps->registrar, &cred); 1691} 1692 1693 1694#ifdef CONFIG_WPS_NFC 1695 1696struct wps_nfc_password_token_data { 1697 const u8 *oob_dev_pw; 1698 size_t oob_dev_pw_len; 1699 int added; 1700}; 1701 1702 1703static int wps_add_nfc_password_token(struct hostapd_data *hapd, void *ctx) 1704{ 1705 struct wps_nfc_password_token_data *data = ctx; 1706 int ret; 1707 1708 if (hapd->wps == NULL) 1709 return 0; 1710 ret = wps_registrar_add_nfc_password_token(hapd->wps->registrar, 1711 data->oob_dev_pw, 1712 data->oob_dev_pw_len); 1713 if (ret == 0) 1714 data->added++; 1715 return ret; 1716} 1717 1718 1719static int hostapd_wps_add_nfc_password_token(struct hostapd_data *hapd, 1720 struct wps_parse_attr *attr) 1721{ 1722 struct wps_nfc_password_token_data data; 1723 1724 data.oob_dev_pw = attr->oob_dev_password; 1725 data.oob_dev_pw_len = attr->oob_dev_password_len; 1726 data.added = 0; 1727 if (hostapd_wps_for_each(hapd, wps_add_nfc_password_token, &data) < 0) 1728 return -1; 1729 return data.added ? 0 : -1; 1730} 1731 1732 1733static int hostapd_wps_nfc_tag_process(struct hostapd_data *hapd, 1734 const struct wpabuf *wps) 1735{ 1736 struct wps_parse_attr attr; 1737 1738 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps); 1739 1740 if (wps_parse_msg(wps, &attr)) { 1741 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag"); 1742 return -1; 1743 } 1744 1745 if (attr.oob_dev_password) 1746 return hostapd_wps_add_nfc_password_token(hapd, &attr); 1747 1748 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag"); 1749 return -1; 1750} 1751 1752 1753int hostapd_wps_nfc_tag_read(struct hostapd_data *hapd, 1754 const struct wpabuf *data) 1755{ 1756 const struct wpabuf *wps = data; 1757 struct wpabuf *tmp = NULL; 1758 int ret; 1759 1760 if (wpabuf_len(data) < 4) 1761 return -1; 1762 1763 if (*wpabuf_head_u8(data) != 0x10) { 1764 /* Assume this contains full NDEF record */ 1765 tmp = ndef_parse_wifi(data); 1766 if (tmp == NULL) { 1767 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF"); 1768 return -1; 1769 } 1770 wps = tmp; 1771 } 1772 1773 ret = hostapd_wps_nfc_tag_process(hapd, wps); 1774 wpabuf_free(tmp); 1775 return ret; 1776} 1777 1778 1779struct wpabuf * hostapd_wps_nfc_config_token(struct hostapd_data *hapd, 1780 int ndef) 1781{ 1782 struct wpabuf *ret; 1783 1784 if (hapd->wps == NULL) 1785 return NULL; 1786 1787 ret = wps_get_oob_cred(hapd->wps, hostapd_wps_rf_band_cb(hapd), 1788 hapd->iconf->channel); 1789 if (ndef && ret) { 1790 struct wpabuf *tmp; 1791 tmp = ndef_build_wifi(ret); 1792 wpabuf_free(ret); 1793 if (tmp == NULL) 1794 return NULL; 1795 ret = tmp; 1796 } 1797 1798 return ret; 1799} 1800 1801 1802struct wpabuf * hostapd_wps_nfc_hs_cr(struct hostapd_data *hapd, int ndef) 1803{ 1804 struct wpabuf *ret; 1805 1806 if (hapd->wps == NULL) 1807 return NULL; 1808 1809 if (hapd->conf->wps_nfc_dh_pubkey == NULL) { 1810 struct wps_context *wps = hapd->wps; 1811 if (wps_nfc_gen_dh(&hapd->conf->wps_nfc_dh_pubkey, 1812 &hapd->conf->wps_nfc_dh_privkey) < 0) 1813 return NULL; 1814 hostapd_wps_nfc_clear(wps); 1815 wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER; 1816 wps->ap_nfc_dh_pubkey = 1817 wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey); 1818 wps->ap_nfc_dh_privkey = 1819 wpabuf_dup(hapd->conf->wps_nfc_dh_privkey); 1820 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) { 1821 hostapd_wps_nfc_clear(wps); 1822 return NULL; 1823 } 1824 } 1825 1826 ret = wps_build_nfc_handover_sel(hapd->wps, 1827 hapd->conf->wps_nfc_dh_pubkey, 1828 hapd->own_addr, hapd->iface->freq); 1829 1830 if (ndef && ret) { 1831 struct wpabuf *tmp; 1832 tmp = ndef_build_wifi(ret); 1833 wpabuf_free(ret); 1834 if (tmp == NULL) 1835 return NULL; 1836 ret = tmp; 1837 } 1838 1839 return ret; 1840} 1841 1842 1843int hostapd_wps_nfc_report_handover(struct hostapd_data *hapd, 1844 const struct wpabuf *req, 1845 const struct wpabuf *sel) 1846{ 1847 struct wpabuf *wps; 1848 int ret = -1; 1849 u16 wsc_len; 1850 const u8 *pos; 1851 struct wpabuf msg; 1852 struct wps_parse_attr attr; 1853 u16 dev_pw_id; 1854 1855 /* 1856 * Enrollee/station is always initiator of the NFC connection handover, 1857 * so use the request message here to find Enrollee public key hash. 1858 */ 1859 wps = ndef_parse_wifi(req); 1860 if (wps == NULL) 1861 return -1; 1862 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc " 1863 "payload from NFC connection handover"); 1864 wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps); 1865 if (wpabuf_len(wps) < 2) { 1866 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request " 1867 "Message"); 1868 goto out; 1869 } 1870 pos = wpabuf_head(wps); 1871 wsc_len = WPA_GET_BE16(pos); 1872 if (wsc_len > wpabuf_len(wps) - 2) { 1873 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) " 1874 "in rt Wi-Fi Handover Request Message", wsc_len); 1875 goto out; 1876 } 1877 pos += 2; 1878 1879 wpa_hexdump(MSG_DEBUG, 1880 "WPS: WSC attributes in Wi-Fi Handover Request Message", 1881 pos, wsc_len); 1882 if (wsc_len < wpabuf_len(wps) - 2) { 1883 wpa_hexdump(MSG_DEBUG, 1884 "WPS: Ignore extra data after WSC attributes", 1885 pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len); 1886 } 1887 1888 wpabuf_set(&msg, pos, wsc_len); 1889 ret = wps_parse_msg(&msg, &attr); 1890 if (ret < 0) { 1891 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in " 1892 "Wi-Fi Handover Request Message"); 1893 goto out; 1894 } 1895 1896 if (attr.oob_dev_password == NULL || 1897 attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) { 1898 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password " 1899 "included in Wi-Fi Handover Request Message"); 1900 ret = -1; 1901 goto out; 1902 } 1903 1904 if (attr.uuid_e == NULL) { 1905 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi " 1906 "Handover Request Message"); 1907 ret = -1; 1908 goto out; 1909 } 1910 1911 wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN); 1912 1913 wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password", 1914 attr.oob_dev_password, attr.oob_dev_password_len); 1915 dev_pw_id = WPA_GET_BE16(attr.oob_dev_password + 1916 WPS_OOB_PUBKEY_HASH_LEN); 1917 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) { 1918 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID " 1919 "%u in Wi-Fi Handover Request Message", dev_pw_id); 1920 ret = -1; 1921 goto out; 1922 } 1923 wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash", 1924 attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN); 1925 1926 ret = wps_registrar_add_nfc_pw_token(hapd->wps->registrar, 1927 attr.oob_dev_password, 1928 DEV_PW_NFC_CONNECTION_HANDOVER, 1929 NULL, 0, 1); 1930 1931out: 1932 wpabuf_free(wps); 1933 return ret; 1934} 1935 1936 1937struct wpabuf * hostapd_wps_nfc_token_gen(struct hostapd_data *hapd, int ndef) 1938{ 1939 if (hapd->conf->wps_nfc_pw_from_config) { 1940 return wps_nfc_token_build(ndef, 1941 hapd->conf->wps_nfc_dev_pw_id, 1942 hapd->conf->wps_nfc_dh_pubkey, 1943 hapd->conf->wps_nfc_dev_pw); 1944 } 1945 1946 return wps_nfc_token_gen(ndef, &hapd->conf->wps_nfc_dev_pw_id, 1947 &hapd->conf->wps_nfc_dh_pubkey, 1948 &hapd->conf->wps_nfc_dh_privkey, 1949 &hapd->conf->wps_nfc_dev_pw); 1950} 1951 1952 1953int hostapd_wps_nfc_token_enable(struct hostapd_data *hapd) 1954{ 1955 struct wps_context *wps = hapd->wps; 1956 struct wpabuf *pw; 1957 1958 if (wps == NULL) 1959 return -1; 1960 1961 if (!hapd->conf->wps_nfc_dh_pubkey || 1962 !hapd->conf->wps_nfc_dh_privkey || 1963 !hapd->conf->wps_nfc_dev_pw || 1964 !hapd->conf->wps_nfc_dev_pw_id) 1965 return -1; 1966 1967 hostapd_wps_nfc_clear(wps); 1968 wpa_printf(MSG_DEBUG, 1969 "WPS: Enable NFC Tag (Dev Pw Id %u) for AP interface %s (context %p)", 1970 hapd->conf->wps_nfc_dev_pw_id, hapd->conf->iface, wps); 1971 wps->ap_nfc_dev_pw_id = hapd->conf->wps_nfc_dev_pw_id; 1972 wps->ap_nfc_dh_pubkey = wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey); 1973 wps->ap_nfc_dh_privkey = wpabuf_dup(hapd->conf->wps_nfc_dh_privkey); 1974 pw = hapd->conf->wps_nfc_dev_pw; 1975 wps->ap_nfc_dev_pw = wpabuf_alloc( 1976 wpabuf_len(pw) * 2 + 1); 1977 if (wps->ap_nfc_dev_pw) { 1978 wpa_snprintf_hex_uppercase( 1979 (char *) wpabuf_put(wps->ap_nfc_dev_pw, 1980 wpabuf_len(pw) * 2), 1981 wpabuf_len(pw) * 2 + 1, 1982 wpabuf_head(pw), wpabuf_len(pw)); 1983 } 1984 1985 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey || 1986 !wps->ap_nfc_dev_pw) { 1987 hostapd_wps_nfc_clear(wps); 1988 return -1; 1989 } 1990 1991 return 0; 1992} 1993 1994 1995void hostapd_wps_nfc_token_disable(struct hostapd_data *hapd) 1996{ 1997 wpa_printf(MSG_DEBUG, "WPS: Disable NFC token for AP interface %s", 1998 hapd->conf->iface); 1999 hostapd_wps_nfc_clear(hapd->wps); 2000} 2001 2002#endif /* CONFIG_WPS_NFC */ 2003