1 /* 2 * hostapd / WPS integration 3 * Copyright (c) 2008-2012, Jouni Malinen <j (at) 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" 33 static int hostapd_wps_upnp_init(struct hostapd_data *hapd, 34 struct wps_context *wps); 35 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd); 36 #endif /* CONFIG_WPS_UPNP */ 37 38 static 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); 42 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx); 43 44 45 struct 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 52 static 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 77 static 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 94 static int hostapd_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk, 95 size_t psk_len) 96 { 97 struct hostapd_data *hapd = ctx; 98 struct hostapd_wpa_psk *p; 99 struct hostapd_ssid *ssid = &hapd->conf->ssid; 100 101 wpa_printf(MSG_DEBUG, "Received new WPA/WPA2-PSK from WPS for STA " 102 MACSTR, MAC2STR(mac_addr)); 103 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len); 104 105 if (psk_len != PMK_LEN) { 106 wpa_printf(MSG_DEBUG, "Unexpected PSK length %lu", 107 (unsigned long) psk_len); 108 return -1; 109 } 110 111 /* Add the new PSK to runtime PSK list */ 112 p = os_zalloc(sizeof(*p)); 113 if (p == NULL) 114 return -1; 115 os_memcpy(p->addr, mac_addr, ETH_ALEN); 116 os_memcpy(p->psk, psk, PMK_LEN); 117 118 p->next = ssid->wpa_psk; 119 ssid->wpa_psk = p; 120 121 if (ssid->wpa_psk_file) { 122 FILE *f; 123 char hex[PMK_LEN * 2 + 1]; 124 /* Add the new PSK to PSK list file */ 125 f = fopen(ssid->wpa_psk_file, "a"); 126 if (f == NULL) { 127 wpa_printf(MSG_DEBUG, "Failed to add the PSK to " 128 "'%s'", ssid->wpa_psk_file); 129 return -1; 130 } 131 132 wpa_snprintf_hex(hex, sizeof(hex), psk, psk_len); 133 fprintf(f, MACSTR " %s\n", MAC2STR(mac_addr), hex); 134 fclose(f); 135 } 136 137 return 0; 138 } 139 140 141 static int hostapd_wps_set_ie_cb(void *ctx, struct wpabuf *beacon_ie, 142 struct wpabuf *probe_resp_ie) 143 { 144 struct hostapd_data *hapd = ctx; 145 wpabuf_free(hapd->wps_beacon_ie); 146 hapd->wps_beacon_ie = beacon_ie; 147 wpabuf_free(hapd->wps_probe_resp_ie); 148 hapd->wps_probe_resp_ie = probe_resp_ie; 149 if (hapd->beacon_set_done) 150 ieee802_11_set_beacon(hapd); 151 return hostapd_set_ap_wps_ie(hapd); 152 } 153 154 155 static void hostapd_wps_pin_needed_cb(void *ctx, const u8 *uuid_e, 156 const struct wps_device_data *dev) 157 { 158 struct hostapd_data *hapd = ctx; 159 char uuid[40], txt[400]; 160 int len; 161 char devtype[WPS_DEV_TYPE_BUFSIZE]; 162 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid))) 163 return; 164 wpa_printf(MSG_DEBUG, "WPS: PIN needed for E-UUID %s", uuid); 165 len = os_snprintf(txt, sizeof(txt), WPS_EVENT_PIN_NEEDED 166 "%s " MACSTR " [%s|%s|%s|%s|%s|%s]", 167 uuid, MAC2STR(dev->mac_addr), dev->device_name, 168 dev->manufacturer, dev->model_name, 169 dev->model_number, dev->serial_number, 170 wps_dev_type_bin2str(dev->pri_dev_type, devtype, 171 sizeof(devtype))); 172 if (len > 0 && len < (int) sizeof(txt)) 173 wpa_msg(hapd->msg_ctx, MSG_INFO, "%s", txt); 174 175 if (hapd->conf->wps_pin_requests) { 176 FILE *f; 177 struct os_time t; 178 f = fopen(hapd->conf->wps_pin_requests, "a"); 179 if (f == NULL) 180 return; 181 os_get_time(&t); 182 fprintf(f, "%ld\t%s\t" MACSTR "\t%s\t%s\t%s\t%s\t%s" 183 "\t%s\n", 184 t.sec, uuid, MAC2STR(dev->mac_addr), dev->device_name, 185 dev->manufacturer, dev->model_name, dev->model_number, 186 dev->serial_number, 187 wps_dev_type_bin2str(dev->pri_dev_type, devtype, 188 sizeof(devtype))); 189 fclose(f); 190 } 191 } 192 193 194 struct wps_stop_reg_data { 195 struct hostapd_data *current_hapd; 196 const u8 *uuid_e; 197 const u8 *dev_pw; 198 size_t dev_pw_len; 199 }; 200 201 static int wps_stop_registrar(struct hostapd_data *hapd, void *ctx) 202 { 203 struct wps_stop_reg_data *data = ctx; 204 if (hapd != data->current_hapd && hapd->wps != NULL) 205 wps_registrar_complete(hapd->wps->registrar, data->uuid_e, 206 data->dev_pw, data->dev_pw_len); 207 return 0; 208 } 209 210 211 static void hostapd_wps_reg_success_cb(void *ctx, const u8 *mac_addr, 212 const u8 *uuid_e, const u8 *dev_pw, 213 size_t dev_pw_len) 214 { 215 struct hostapd_data *hapd = ctx; 216 char uuid[40]; 217 struct wps_stop_reg_data data; 218 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid))) 219 return; 220 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_REG_SUCCESS MACSTR " %s", 221 MAC2STR(mac_addr), uuid); 222 if (hapd->wps_reg_success_cb) 223 hapd->wps_reg_success_cb(hapd->wps_reg_success_cb_ctx, 224 mac_addr, uuid_e); 225 data.current_hapd = hapd; 226 data.uuid_e = uuid_e; 227 data.dev_pw = dev_pw; 228 data.dev_pw_len = dev_pw_len; 229 hostapd_wps_for_each(hapd, wps_stop_registrar, &data); 230 } 231 232 233 static void hostapd_wps_enrollee_seen_cb(void *ctx, const u8 *addr, 234 const u8 *uuid_e, 235 const u8 *pri_dev_type, 236 u16 config_methods, 237 u16 dev_password_id, u8 request_type, 238 const char *dev_name) 239 { 240 struct hostapd_data *hapd = ctx; 241 char uuid[40]; 242 char devtype[WPS_DEV_TYPE_BUFSIZE]; 243 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid))) 244 return; 245 if (dev_name == NULL) 246 dev_name = ""; 247 wpa_msg_ctrl(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ENROLLEE_SEEN MACSTR 248 " %s %s 0x%x %u %u [%s]", 249 MAC2STR(addr), uuid, 250 wps_dev_type_bin2str(pri_dev_type, devtype, 251 sizeof(devtype)), 252 config_methods, dev_password_id, request_type, dev_name); 253 } 254 255 256 static int str_starts(const char *str, const char *start) 257 { 258 return os_strncmp(str, start, os_strlen(start)) == 0; 259 } 260 261 262 static void wps_reload_config(void *eloop_data, void *user_ctx) 263 { 264 struct hostapd_iface *iface = eloop_data; 265 266 wpa_printf(MSG_DEBUG, "WPS: Reload configuration data"); 267 if (iface->interfaces == NULL || 268 iface->interfaces->reload_config(iface) < 0) { 269 wpa_printf(MSG_WARNING, "WPS: Failed to reload the updated " 270 "configuration"); 271 } 272 } 273 274 275 static void hapd_new_ap_event(struct hostapd_data *hapd, const u8 *attr, 276 size_t attr_len) 277 { 278 size_t blen = attr_len * 2 + 1; 279 char *buf = os_malloc(blen); 280 if (buf) { 281 wpa_snprintf_hex(buf, blen, attr, attr_len); 282 wpa_msg(hapd->msg_ctx, MSG_INFO, 283 WPS_EVENT_NEW_AP_SETTINGS "%s", buf); 284 os_free(buf); 285 } 286 } 287 288 289 static int hapd_wps_reconfig_in_memory(struct hostapd_data *hapd, 290 const struct wps_credential *cred) 291 { 292 struct hostapd_bss_config *bss = hapd->conf; 293 294 wpa_printf(MSG_DEBUG, "WPS: Updating in-memory configuration"); 295 296 bss->wps_state = 2; 297 if (cred->ssid_len <= HOSTAPD_MAX_SSID_LEN) { 298 os_memcpy(bss->ssid.ssid, cred->ssid, cred->ssid_len); 299 bss->ssid.ssid_len = cred->ssid_len; 300 bss->ssid.ssid_set = 1; 301 } 302 303 if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) && 304 (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))) 305 bss->wpa = 3; 306 else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) 307 bss->wpa = 2; 308 else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)) 309 bss->wpa = 1; 310 else 311 bss->wpa = 0; 312 313 if (bss->wpa) { 314 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) 315 bss->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X; 316 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK)) 317 bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK; 318 319 bss->wpa_pairwise = 0; 320 if (cred->encr_type & WPS_ENCR_AES) 321 bss->wpa_pairwise |= WPA_CIPHER_CCMP; 322 if (cred->encr_type & WPS_ENCR_TKIP) 323 bss->wpa_pairwise |= WPA_CIPHER_TKIP; 324 bss->rsn_pairwise = bss->wpa_pairwise; 325 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, 326 bss->wpa_pairwise, 327 bss->rsn_pairwise); 328 329 if (cred->key_len >= 8 && cred->key_len < 64) { 330 os_free(bss->ssid.wpa_passphrase); 331 bss->ssid.wpa_passphrase = os_zalloc(cred->key_len + 1); 332 if (bss->ssid.wpa_passphrase) 333 os_memcpy(bss->ssid.wpa_passphrase, cred->key, 334 cred->key_len); 335 os_free(bss->ssid.wpa_psk); 336 bss->ssid.wpa_psk = NULL; 337 } else if (cred->key_len == 64) { 338 os_free(bss->ssid.wpa_psk); 339 bss->ssid.wpa_psk = 340 os_zalloc(sizeof(struct hostapd_wpa_psk)); 341 if (bss->ssid.wpa_psk && 342 hexstr2bin((const char *) cred->key, 343 bss->ssid.wpa_psk->psk, PMK_LEN) == 0) { 344 bss->ssid.wpa_psk->group = 1; 345 os_free(bss->ssid.wpa_passphrase); 346 bss->ssid.wpa_passphrase = NULL; 347 } 348 } 349 bss->auth_algs = 1; 350 } else { 351 if ((cred->auth_type & WPS_AUTH_OPEN) && 352 (cred->auth_type & WPS_AUTH_SHARED)) 353 bss->auth_algs = 3; 354 else if (cred->auth_type & WPS_AUTH_SHARED) 355 bss->auth_algs = 2; 356 else 357 bss->auth_algs = 1; 358 if (cred->encr_type & WPS_ENCR_WEP && cred->key_idx > 0 && 359 cred->key_idx <= 4) { 360 struct hostapd_wep_keys *wep = &bss->ssid.wep; 361 int idx = cred->key_idx; 362 if (idx) 363 idx--; 364 wep->idx = idx; 365 if (cred->key_len == 10 || cred->key_len == 26) { 366 os_free(wep->key[idx]); 367 wep->key[idx] = os_malloc(cred->key_len / 2); 368 if (wep->key[idx] == NULL || 369 hexstr2bin((const char *) cred->key, 370 wep->key[idx], 371 cred->key_len / 2)) 372 return -1; 373 wep->len[idx] = cred->key_len / 2; 374 } else { 375 os_free(wep->key[idx]); 376 wep->key[idx] = os_malloc(cred->key_len); 377 if (wep->key[idx] == NULL) 378 return -1; 379 os_memcpy(wep->key[idx], cred->key, 380 cred->key_len); 381 wep->len[idx] = cred->key_len; 382 } 383 wep->keys_set = 1; 384 } 385 } 386 387 /* Schedule configuration reload after short period of time to allow 388 * EAP-WSC to be finished. 389 */ 390 eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface, 391 NULL); 392 393 return 0; 394 } 395 396 397 static int hapd_wps_cred_cb(struct hostapd_data *hapd, void *ctx) 398 { 399 const struct wps_credential *cred = ctx; 400 FILE *oconf, *nconf; 401 size_t len, i; 402 char *tmp_fname; 403 char buf[1024]; 404 int multi_bss; 405 int wpa; 406 407 if (hapd->wps == NULL) 408 return 0; 409 410 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute", 411 cred->cred_attr, cred->cred_attr_len); 412 413 wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings"); 414 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len); 415 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x", 416 cred->auth_type); 417 wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type); 418 wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx); 419 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key", 420 cred->key, cred->key_len); 421 wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR, 422 MAC2STR(cred->mac_addr)); 423 424 if ((hapd->conf->wps_cred_processing == 1 || 425 hapd->conf->wps_cred_processing == 2) && cred->cred_attr) { 426 hapd_new_ap_event(hapd, cred->cred_attr, cred->cred_attr_len); 427 } else if (hapd->conf->wps_cred_processing == 1 || 428 hapd->conf->wps_cred_processing == 2) { 429 struct wpabuf *attr; 430 attr = wpabuf_alloc(200); 431 if (attr && wps_build_credential_wrap(attr, cred) == 0) 432 hapd_new_ap_event(hapd, wpabuf_head_u8(attr), 433 wpabuf_len(attr)); 434 wpabuf_free(attr); 435 } else 436 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS); 437 438 if (hapd->conf->wps_cred_processing == 1) 439 return 0; 440 441 os_memcpy(hapd->wps->ssid, cred->ssid, cred->ssid_len); 442 hapd->wps->ssid_len = cred->ssid_len; 443 hapd->wps->encr_types = cred->encr_type; 444 hapd->wps->auth_types = cred->auth_type; 445 if (cred->key_len == 0) { 446 os_free(hapd->wps->network_key); 447 hapd->wps->network_key = NULL; 448 hapd->wps->network_key_len = 0; 449 } else { 450 if (hapd->wps->network_key == NULL || 451 hapd->wps->network_key_len < cred->key_len) { 452 hapd->wps->network_key_len = 0; 453 os_free(hapd->wps->network_key); 454 hapd->wps->network_key = os_malloc(cred->key_len); 455 if (hapd->wps->network_key == NULL) 456 return -1; 457 } 458 hapd->wps->network_key_len = cred->key_len; 459 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len); 460 } 461 hapd->wps->wps_state = WPS_STATE_CONFIGURED; 462 463 if (hapd->iface->config_fname == NULL) 464 return hapd_wps_reconfig_in_memory(hapd, cred); 465 len = os_strlen(hapd->iface->config_fname) + 5; 466 tmp_fname = os_malloc(len); 467 if (tmp_fname == NULL) 468 return -1; 469 os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname); 470 471 oconf = fopen(hapd->iface->config_fname, "r"); 472 if (oconf == NULL) { 473 wpa_printf(MSG_WARNING, "WPS: Could not open current " 474 "configuration file"); 475 os_free(tmp_fname); 476 return -1; 477 } 478 479 nconf = fopen(tmp_fname, "w"); 480 if (nconf == NULL) { 481 wpa_printf(MSG_WARNING, "WPS: Could not write updated " 482 "configuration file"); 483 os_free(tmp_fname); 484 fclose(oconf); 485 return -1; 486 } 487 488 fprintf(nconf, "# WPS configuration - START\n"); 489 490 fprintf(nconf, "wps_state=2\n"); 491 492 if (is_hex(cred->ssid, cred->ssid_len)) { 493 fprintf(nconf, "ssid2="); 494 for (i = 0; i < cred->ssid_len; i++) 495 fprintf(nconf, "%02x", cred->ssid[i]); 496 fprintf(nconf, "\n"); 497 } else { 498 fprintf(nconf, "ssid="); 499 for (i = 0; i < cred->ssid_len; i++) 500 fputc(cred->ssid[i], nconf); 501 fprintf(nconf, "\n"); 502 } 503 504 if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) && 505 (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))) 506 wpa = 3; 507 else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) 508 wpa = 2; 509 else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)) 510 wpa = 1; 511 else 512 wpa = 0; 513 514 if (wpa) { 515 char *prefix; 516 fprintf(nconf, "wpa=%d\n", wpa); 517 518 fprintf(nconf, "wpa_key_mgmt="); 519 prefix = ""; 520 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) { 521 fprintf(nconf, "WPA-EAP"); 522 prefix = " "; 523 } 524 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK)) 525 fprintf(nconf, "%sWPA-PSK", prefix); 526 fprintf(nconf, "\n"); 527 528 fprintf(nconf, "wpa_pairwise="); 529 prefix = ""; 530 if (cred->encr_type & WPS_ENCR_AES) { 531 fprintf(nconf, "CCMP"); 532 prefix = " "; 533 } 534 if (cred->encr_type & WPS_ENCR_TKIP) { 535 fprintf(nconf, "%sTKIP", prefix); 536 } 537 fprintf(nconf, "\n"); 538 539 if (cred->key_len >= 8 && cred->key_len < 64) { 540 fprintf(nconf, "wpa_passphrase="); 541 for (i = 0; i < cred->key_len; i++) 542 fputc(cred->key[i], nconf); 543 fprintf(nconf, "\n"); 544 } else if (cred->key_len == 64) { 545 fprintf(nconf, "wpa_psk="); 546 for (i = 0; i < cred->key_len; i++) 547 fputc(cred->key[i], nconf); 548 fprintf(nconf, "\n"); 549 } else { 550 wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu " 551 "for WPA/WPA2", 552 (unsigned long) cred->key_len); 553 } 554 555 fprintf(nconf, "auth_algs=1\n"); 556 } else { 557 if ((cred->auth_type & WPS_AUTH_OPEN) && 558 (cred->auth_type & WPS_AUTH_SHARED)) 559 fprintf(nconf, "auth_algs=3\n"); 560 else if (cred->auth_type & WPS_AUTH_SHARED) 561 fprintf(nconf, "auth_algs=2\n"); 562 else 563 fprintf(nconf, "auth_algs=1\n"); 564 565 if (cred->encr_type & WPS_ENCR_WEP && cred->key_idx <= 4) { 566 int key_idx = cred->key_idx; 567 if (key_idx) 568 key_idx--; 569 fprintf(nconf, "wep_default_key=%d\n", key_idx); 570 fprintf(nconf, "wep_key%d=", key_idx); 571 if (cred->key_len == 10 || cred->key_len == 26) { 572 /* WEP key as a hex string */ 573 for (i = 0; i < cred->key_len; i++) 574 fputc(cred->key[i], nconf); 575 } else { 576 /* Raw WEP key; convert to hex */ 577 for (i = 0; i < cred->key_len; i++) 578 fprintf(nconf, "%02x", cred->key[i]); 579 } 580 fprintf(nconf, "\n"); 581 } 582 } 583 584 fprintf(nconf, "# WPS configuration - END\n"); 585 586 multi_bss = 0; 587 while (fgets(buf, sizeof(buf), oconf)) { 588 if (os_strncmp(buf, "bss=", 4) == 0) 589 multi_bss = 1; 590 if (!multi_bss && 591 (str_starts(buf, "ssid=") || 592 str_starts(buf, "ssid2=") || 593 str_starts(buf, "auth_algs=") || 594 str_starts(buf, "wep_default_key=") || 595 str_starts(buf, "wep_key") || 596 str_starts(buf, "wps_state=") || 597 str_starts(buf, "wpa=") || 598 str_starts(buf, "wpa_psk=") || 599 str_starts(buf, "wpa_pairwise=") || 600 str_starts(buf, "rsn_pairwise=") || 601 str_starts(buf, "wpa_key_mgmt=") || 602 str_starts(buf, "wpa_passphrase="))) { 603 fprintf(nconf, "#WPS# %s", buf); 604 } else 605 fprintf(nconf, "%s", buf); 606 } 607 608 fclose(nconf); 609 fclose(oconf); 610 611 if (rename(tmp_fname, hapd->iface->config_fname) < 0) { 612 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated " 613 "configuration file: %s", strerror(errno)); 614 os_free(tmp_fname); 615 return -1; 616 } 617 618 os_free(tmp_fname); 619 620 /* Schedule configuration reload after short period of time to allow 621 * EAP-WSC to be finished. 622 */ 623 eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface, 624 NULL); 625 626 wpa_printf(MSG_DEBUG, "WPS: AP configuration updated"); 627 628 return 0; 629 } 630 631 632 static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred) 633 { 634 struct hostapd_data *hapd = ctx; 635 return hostapd_wps_for_each(hapd, hapd_wps_cred_cb, (void *) cred); 636 } 637 638 639 static void hostapd_wps_reenable_ap_pin(void *eloop_data, void *user_ctx) 640 { 641 struct hostapd_data *hapd = eloop_data; 642 643 if (hapd->conf->ap_setup_locked) 644 return; 645 if (hapd->ap_pin_failures_consecutive >= 10) 646 return; 647 648 wpa_printf(MSG_DEBUG, "WPS: Re-enable AP PIN"); 649 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED); 650 hapd->wps->ap_setup_locked = 0; 651 wps_registrar_update_ie(hapd->wps->registrar); 652 } 653 654 655 static int wps_pwd_auth_fail(struct hostapd_data *hapd, void *ctx) 656 { 657 struct wps_event_pwd_auth_fail *data = ctx; 658 659 if (!data->enrollee || hapd->conf->ap_pin == NULL || hapd->wps == NULL) 660 return 0; 661 662 /* 663 * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup 664 * for some time if this happens multiple times to slow down brute 665 * force attacks. 666 */ 667 hapd->ap_pin_failures++; 668 hapd->ap_pin_failures_consecutive++; 669 wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u " 670 "(%u consecutive)", 671 hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive); 672 if (hapd->ap_pin_failures < 3) 673 return 0; 674 675 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED); 676 hapd->wps->ap_setup_locked = 1; 677 678 wps_registrar_update_ie(hapd->wps->registrar); 679 680 if (!hapd->conf->ap_setup_locked && 681 hapd->ap_pin_failures_consecutive >= 10) { 682 /* 683 * In indefinite lockdown - disable automatic AP PIN 684 * reenablement. 685 */ 686 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 687 wpa_printf(MSG_DEBUG, "WPS: AP PIN disabled indefinitely"); 688 } else if (!hapd->conf->ap_setup_locked) { 689 if (hapd->ap_pin_lockout_time == 0) 690 hapd->ap_pin_lockout_time = 60; 691 else if (hapd->ap_pin_lockout_time < 365 * 24 * 60 * 60 && 692 (hapd->ap_pin_failures % 3) == 0) 693 hapd->ap_pin_lockout_time *= 2; 694 695 wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN for %u seconds", 696 hapd->ap_pin_lockout_time); 697 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 698 eloop_register_timeout(hapd->ap_pin_lockout_time, 0, 699 hostapd_wps_reenable_ap_pin, hapd, 700 NULL); 701 } 702 703 return 0; 704 } 705 706 707 static void hostapd_pwd_auth_fail(struct hostapd_data *hapd, 708 struct wps_event_pwd_auth_fail *data) 709 { 710 hostapd_wps_for_each(hapd, wps_pwd_auth_fail, data); 711 } 712 713 714 static int wps_ap_pin_success(struct hostapd_data *hapd, void *ctx) 715 { 716 if (hapd->conf->ap_pin == NULL || hapd->wps == NULL) 717 return 0; 718 719 if (hapd->ap_pin_failures_consecutive == 0) 720 return 0; 721 722 wpa_printf(MSG_DEBUG, "WPS: Clear consecutive AP PIN failure counter " 723 "- total validation failures %u (%u consecutive)", 724 hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive); 725 hapd->ap_pin_failures_consecutive = 0; 726 727 return 0; 728 } 729 730 731 static void hostapd_wps_ap_pin_success(struct hostapd_data *hapd) 732 { 733 hostapd_wps_for_each(hapd, wps_ap_pin_success, NULL); 734 } 735 736 737 static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = { 738 "No Error", /* WPS_EI_NO_ERROR */ 739 "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */ 740 "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */ 741 }; 742 743 static void hostapd_wps_event_fail(struct hostapd_data *hapd, 744 struct wps_event_fail *fail) 745 { 746 if (fail->error_indication > 0 && 747 fail->error_indication < NUM_WPS_EI_VALUES) { 748 wpa_msg(hapd->msg_ctx, MSG_INFO, 749 WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)", 750 fail->msg, fail->config_error, fail->error_indication, 751 wps_event_fail_reason[fail->error_indication]); 752 } else { 753 wpa_msg(hapd->msg_ctx, MSG_INFO, 754 WPS_EVENT_FAIL "msg=%d config_error=%d", 755 fail->msg, fail->config_error); 756 } 757 } 758 759 760 static void hostapd_wps_event_cb(void *ctx, enum wps_event event, 761 union wps_event_data *data) 762 { 763 struct hostapd_data *hapd = ctx; 764 765 switch (event) { 766 case WPS_EV_M2D: 767 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_M2D); 768 break; 769 case WPS_EV_FAIL: 770 hostapd_wps_event_fail(hapd, &data->fail); 771 break; 772 case WPS_EV_SUCCESS: 773 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_SUCCESS); 774 break; 775 case WPS_EV_PWD_AUTH_FAIL: 776 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail); 777 break; 778 case WPS_EV_PBC_OVERLAP: 779 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_OVERLAP); 780 break; 781 case WPS_EV_PBC_TIMEOUT: 782 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_TIMEOUT); 783 break; 784 case WPS_EV_ER_AP_ADD: 785 break; 786 case WPS_EV_ER_AP_REMOVE: 787 break; 788 case WPS_EV_ER_ENROLLEE_ADD: 789 break; 790 case WPS_EV_ER_ENROLLEE_REMOVE: 791 break; 792 case WPS_EV_ER_AP_SETTINGS: 793 break; 794 case WPS_EV_ER_SET_SELECTED_REGISTRAR: 795 break; 796 case WPS_EV_AP_PIN_SUCCESS: 797 hostapd_wps_ap_pin_success(hapd); 798 break; 799 } 800 if (hapd->wps_event_cb) 801 hapd->wps_event_cb(hapd->wps_event_cb_ctx, event, data); 802 } 803 804 805 static void hostapd_wps_clear_ies(struct hostapd_data *hapd) 806 { 807 wpabuf_free(hapd->wps_beacon_ie); 808 hapd->wps_beacon_ie = NULL; 809 810 wpabuf_free(hapd->wps_probe_resp_ie); 811 hapd->wps_probe_resp_ie = NULL; 812 813 hostapd_set_ap_wps_ie(hapd); 814 } 815 816 817 static int get_uuid_cb(struct hostapd_iface *iface, void *ctx) 818 { 819 const u8 **uuid = ctx; 820 size_t j; 821 822 if (iface == NULL) 823 return 0; 824 for (j = 0; j < iface->num_bss; j++) { 825 struct hostapd_data *hapd = iface->bss[j]; 826 if (hapd->wps && !hapd->conf->wps_independent && 827 !is_nil_uuid(hapd->wps->uuid)) { 828 *uuid = hapd->wps->uuid; 829 return 1; 830 } 831 } 832 833 return 0; 834 } 835 836 837 static const u8 * get_own_uuid(struct hostapd_iface *iface) 838 { 839 const u8 *uuid; 840 if (iface->interfaces == NULL || 841 iface->interfaces->for_each_interface == NULL) 842 return NULL; 843 uuid = NULL; 844 iface->interfaces->for_each_interface(iface->interfaces, get_uuid_cb, 845 &uuid); 846 return uuid; 847 } 848 849 850 static int count_interface_cb(struct hostapd_iface *iface, void *ctx) 851 { 852 int *count= ctx; 853 (*count)++; 854 return 0; 855 } 856 857 858 static int interface_count(struct hostapd_iface *iface) 859 { 860 int count = 0; 861 if (iface->interfaces == NULL || 862 iface->interfaces->for_each_interface == NULL) 863 return 0; 864 iface->interfaces->for_each_interface(iface->interfaces, 865 count_interface_cb, &count); 866 return count; 867 } 868 869 870 static int hostapd_wps_set_vendor_ext(struct hostapd_data *hapd, 871 struct wps_context *wps) 872 { 873 int i; 874 875 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) { 876 wpabuf_free(wps->dev.vendor_ext[i]); 877 wps->dev.vendor_ext[i] = NULL; 878 879 if (hapd->conf->wps_vendor_ext[i] == NULL) 880 continue; 881 882 wps->dev.vendor_ext[i] = 883 wpabuf_dup(hapd->conf->wps_vendor_ext[i]); 884 if (wps->dev.vendor_ext[i] == NULL) { 885 while (--i >= 0) 886 wpabuf_free(wps->dev.vendor_ext[i]); 887 return -1; 888 } 889 } 890 891 return 0; 892 } 893 894 895 int hostapd_init_wps(struct hostapd_data *hapd, 896 struct hostapd_bss_config *conf) 897 { 898 struct wps_context *wps; 899 struct wps_registrar_config cfg; 900 901 if (conf->wps_state == 0) { 902 hostapd_wps_clear_ies(hapd); 903 return 0; 904 } 905 906 wps = os_zalloc(sizeof(*wps)); 907 if (wps == NULL) 908 return -1; 909 910 wps->cred_cb = hostapd_wps_cred_cb; 911 wps->event_cb = hostapd_wps_event_cb; 912 wps->cb_ctx = hapd; 913 914 os_memset(&cfg, 0, sizeof(cfg)); 915 wps->wps_state = hapd->conf->wps_state; 916 wps->ap_setup_locked = hapd->conf->ap_setup_locked; 917 if (is_nil_uuid(hapd->conf->uuid)) { 918 const u8 *uuid; 919 uuid = get_own_uuid(hapd->iface); 920 if (uuid && !conf->wps_independent) { 921 os_memcpy(wps->uuid, uuid, UUID_LEN); 922 wpa_hexdump(MSG_DEBUG, "WPS: Clone UUID from another " 923 "interface", wps->uuid, UUID_LEN); 924 } else { 925 uuid_gen_mac_addr(hapd->own_addr, wps->uuid); 926 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC " 927 "address", wps->uuid, UUID_LEN); 928 } 929 } else { 930 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN); 931 wpa_hexdump(MSG_DEBUG, "WPS: Use configured UUID", 932 wps->uuid, UUID_LEN); 933 } 934 wps->ssid_len = hapd->conf->ssid.ssid_len; 935 os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len); 936 wps->ap = 1; 937 os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN); 938 wps->dev.device_name = hapd->conf->device_name ? 939 os_strdup(hapd->conf->device_name) : NULL; 940 wps->dev.manufacturer = hapd->conf->manufacturer ? 941 os_strdup(hapd->conf->manufacturer) : NULL; 942 wps->dev.model_name = hapd->conf->model_name ? 943 os_strdup(hapd->conf->model_name) : NULL; 944 wps->dev.model_number = hapd->conf->model_number ? 945 os_strdup(hapd->conf->model_number) : NULL; 946 wps->dev.serial_number = hapd->conf->serial_number ? 947 os_strdup(hapd->conf->serial_number) : NULL; 948 wps->config_methods = 949 wps_config_methods_str2bin(hapd->conf->config_methods); 950 #ifdef CONFIG_WPS2 951 if ((wps->config_methods & 952 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY | 953 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) { 954 wpa_printf(MSG_INFO, "WPS: Converting display to " 955 "virtual_display for WPS 2.0 compliance"); 956 wps->config_methods |= WPS_CONFIG_VIRT_DISPLAY; 957 } 958 if ((wps->config_methods & 959 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON | 960 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) { 961 wpa_printf(MSG_INFO, "WPS: Converting push_button to " 962 "virtual_push_button for WPS 2.0 compliance"); 963 wps->config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON; 964 } 965 #endif /* CONFIG_WPS2 */ 966 os_memcpy(wps->dev.pri_dev_type, hapd->conf->device_type, 967 WPS_DEV_TYPE_LEN); 968 969 if (hostapd_wps_set_vendor_ext(hapd, wps) < 0) { 970 os_free(wps); 971 return -1; 972 } 973 974 wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version); 975 976 if (conf->wps_rf_bands) { 977 wps->dev.rf_bands = conf->wps_rf_bands; 978 } else { 979 wps->dev.rf_bands = 980 hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ? 981 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */ 982 } 983 984 if (conf->wpa & WPA_PROTO_RSN) { 985 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) 986 wps->auth_types |= WPS_AUTH_WPA2PSK; 987 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) 988 wps->auth_types |= WPS_AUTH_WPA2; 989 990 if (conf->rsn_pairwise & WPA_CIPHER_CCMP) 991 wps->encr_types |= WPS_ENCR_AES; 992 if (conf->rsn_pairwise & WPA_CIPHER_TKIP) 993 wps->encr_types |= WPS_ENCR_TKIP; 994 } 995 996 if (conf->wpa & WPA_PROTO_WPA) { 997 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) 998 wps->auth_types |= WPS_AUTH_WPAPSK; 999 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) 1000 wps->auth_types |= WPS_AUTH_WPA; 1001 1002 if (conf->wpa_pairwise & WPA_CIPHER_CCMP) 1003 wps->encr_types |= WPS_ENCR_AES; 1004 if (conf->wpa_pairwise & WPA_CIPHER_TKIP) 1005 wps->encr_types |= WPS_ENCR_TKIP; 1006 } 1007 1008 if (conf->ssid.security_policy == SECURITY_PLAINTEXT) { 1009 wps->encr_types |= WPS_ENCR_NONE; 1010 wps->auth_types |= WPS_AUTH_OPEN; 1011 } else if (conf->ssid.security_policy == SECURITY_STATIC_WEP) { 1012 wps->encr_types |= WPS_ENCR_WEP; 1013 if (conf->auth_algs & WPA_AUTH_ALG_OPEN) 1014 wps->auth_types |= WPS_AUTH_OPEN; 1015 if (conf->auth_algs & WPA_AUTH_ALG_SHARED) 1016 wps->auth_types |= WPS_AUTH_SHARED; 1017 } else if (conf->ssid.security_policy == SECURITY_IEEE_802_1X) { 1018 wps->auth_types |= WPS_AUTH_OPEN; 1019 if (conf->default_wep_key_len) 1020 wps->encr_types |= WPS_ENCR_WEP; 1021 else 1022 wps->encr_types |= WPS_ENCR_NONE; 1023 } 1024 1025 if (conf->ssid.wpa_psk_file) { 1026 /* Use per-device PSKs */ 1027 } else if (conf->ssid.wpa_passphrase) { 1028 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase); 1029 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase); 1030 } else if (conf->ssid.wpa_psk) { 1031 wps->network_key = os_malloc(2 * PMK_LEN + 1); 1032 if (wps->network_key == NULL) { 1033 os_free(wps); 1034 return -1; 1035 } 1036 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1, 1037 conf->ssid.wpa_psk->psk, PMK_LEN); 1038 wps->network_key_len = 2 * PMK_LEN; 1039 } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) { 1040 wps->network_key = os_malloc(conf->ssid.wep.len[0]); 1041 if (wps->network_key == NULL) { 1042 os_free(wps); 1043 return -1; 1044 } 1045 os_memcpy(wps->network_key, conf->ssid.wep.key[0], 1046 conf->ssid.wep.len[0]); 1047 wps->network_key_len = conf->ssid.wep.len[0]; 1048 } 1049 1050 if (conf->ssid.wpa_psk) { 1051 os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN); 1052 wps->psk_set = 1; 1053 } 1054 1055 if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) { 1056 /* Override parameters to enable security by default */ 1057 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK; 1058 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP; 1059 } 1060 1061 wps->ap_settings = conf->ap_settings; 1062 wps->ap_settings_len = conf->ap_settings_len; 1063 1064 cfg.new_psk_cb = hostapd_wps_new_psk_cb; 1065 cfg.set_ie_cb = hostapd_wps_set_ie_cb; 1066 cfg.pin_needed_cb = hostapd_wps_pin_needed_cb; 1067 cfg.reg_success_cb = hostapd_wps_reg_success_cb; 1068 cfg.enrollee_seen_cb = hostapd_wps_enrollee_seen_cb; 1069 cfg.cb_ctx = hapd; 1070 cfg.skip_cred_build = conf->skip_cred_build; 1071 cfg.extra_cred = conf->extra_cred; 1072 cfg.extra_cred_len = conf->extra_cred_len; 1073 cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) && 1074 conf->skip_cred_build; 1075 if (conf->ssid.security_policy == SECURITY_STATIC_WEP) 1076 cfg.static_wep_only = 1; 1077 cfg.dualband = interface_count(hapd->iface) > 1; 1078 if ((wps->dev.rf_bands & (WPS_RF_50GHZ | WPS_RF_24GHZ)) == 1079 (WPS_RF_50GHZ | WPS_RF_24GHZ)) 1080 cfg.dualband = 1; 1081 if (cfg.dualband) 1082 wpa_printf(MSG_DEBUG, "WPS: Dualband AP"); 1083 1084 wps->registrar = wps_registrar_init(wps, &cfg); 1085 if (wps->registrar == NULL) { 1086 wpa_printf(MSG_ERROR, "Failed to initialize WPS Registrar"); 1087 os_free(wps->network_key); 1088 os_free(wps); 1089 return -1; 1090 } 1091 1092 #ifdef CONFIG_WPS_UPNP 1093 wps->friendly_name = hapd->conf->friendly_name; 1094 wps->manufacturer_url = hapd->conf->manufacturer_url; 1095 wps->model_description = hapd->conf->model_description; 1096 wps->model_url = hapd->conf->model_url; 1097 wps->upc = hapd->conf->upc; 1098 #endif /* CONFIG_WPS_UPNP */ 1099 1100 hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd); 1101 1102 hapd->wps = wps; 1103 1104 return 0; 1105 } 1106 1107 1108 int hostapd_init_wps_complete(struct hostapd_data *hapd) 1109 { 1110 struct wps_context *wps = hapd->wps; 1111 1112 if (wps == NULL) 1113 return 0; 1114 1115 #ifdef CONFIG_WPS_UPNP 1116 if (hostapd_wps_upnp_init(hapd, wps) < 0) { 1117 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP"); 1118 wps_registrar_deinit(wps->registrar); 1119 os_free(wps->network_key); 1120 os_free(wps); 1121 hapd->wps = NULL; 1122 return -1; 1123 } 1124 #endif /* CONFIG_WPS_UPNP */ 1125 1126 return 0; 1127 } 1128 1129 1130 static void hostapd_wps_nfc_clear(struct wps_context *wps) 1131 { 1132 #ifdef CONFIG_WPS_NFC 1133 wps->ap_nfc_dev_pw_id = 0; 1134 wpabuf_free(wps->ap_nfc_dh_pubkey); 1135 wps->ap_nfc_dh_pubkey = NULL; 1136 wpabuf_free(wps->ap_nfc_dh_privkey); 1137 wps->ap_nfc_dh_privkey = NULL; 1138 wpabuf_free(wps->ap_nfc_dev_pw); 1139 wps->ap_nfc_dev_pw = NULL; 1140 #endif /* CONFIG_WPS_NFC */ 1141 } 1142 1143 1144 void hostapd_deinit_wps(struct hostapd_data *hapd) 1145 { 1146 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 1147 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1148 if (hapd->wps == NULL) 1149 return; 1150 #ifdef CONFIG_WPS_UPNP 1151 hostapd_wps_upnp_deinit(hapd); 1152 #endif /* CONFIG_WPS_UPNP */ 1153 wps_registrar_deinit(hapd->wps->registrar); 1154 os_free(hapd->wps->network_key); 1155 wps_device_data_free(&hapd->wps->dev); 1156 wpabuf_free(hapd->wps->dh_pubkey); 1157 wpabuf_free(hapd->wps->dh_privkey); 1158 wps_free_pending_msgs(hapd->wps->upnp_msgs); 1159 hostapd_wps_nfc_clear(hapd->wps); 1160 os_free(hapd->wps); 1161 hapd->wps = NULL; 1162 hostapd_wps_clear_ies(hapd); 1163 } 1164 1165 1166 void hostapd_update_wps(struct hostapd_data *hapd) 1167 { 1168 if (hapd->wps == NULL) 1169 return; 1170 1171 #ifdef CONFIG_WPS_UPNP 1172 hapd->wps->friendly_name = hapd->conf->friendly_name; 1173 hapd->wps->manufacturer_url = hapd->conf->manufacturer_url; 1174 hapd->wps->model_description = hapd->conf->model_description; 1175 hapd->wps->model_url = hapd->conf->model_url; 1176 hapd->wps->upc = hapd->conf->upc; 1177 #endif /* CONFIG_WPS_UPNP */ 1178 1179 hostapd_wps_set_vendor_ext(hapd, hapd->wps); 1180 1181 if (hapd->conf->wps_state) 1182 wps_registrar_update_ie(hapd->wps->registrar); 1183 else 1184 hostapd_deinit_wps(hapd); 1185 } 1186 1187 1188 struct wps_add_pin_data { 1189 const u8 *addr; 1190 const u8 *uuid; 1191 const u8 *pin; 1192 size_t pin_len; 1193 int timeout; 1194 int added; 1195 }; 1196 1197 1198 static int wps_add_pin(struct hostapd_data *hapd, void *ctx) 1199 { 1200 struct wps_add_pin_data *data = ctx; 1201 int ret; 1202 1203 if (hapd->wps == NULL) 1204 return 0; 1205 ret = wps_registrar_add_pin(hapd->wps->registrar, data->addr, 1206 data->uuid, data->pin, data->pin_len, 1207 data->timeout); 1208 if (ret == 0) 1209 data->added++; 1210 return ret; 1211 } 1212 1213 1214 int hostapd_wps_add_pin(struct hostapd_data *hapd, const u8 *addr, 1215 const char *uuid, const char *pin, int timeout) 1216 { 1217 u8 u[UUID_LEN]; 1218 struct wps_add_pin_data data; 1219 1220 data.addr = addr; 1221 data.uuid = u; 1222 data.pin = (const u8 *) pin; 1223 data.pin_len = os_strlen(pin); 1224 data.timeout = timeout; 1225 data.added = 0; 1226 1227 if (os_strcmp(uuid, "any") == 0) 1228 data.uuid = NULL; 1229 else { 1230 if (uuid_str2bin(uuid, u)) 1231 return -1; 1232 data.uuid = u; 1233 } 1234 if (hostapd_wps_for_each(hapd, wps_add_pin, &data) < 0) 1235 return -1; 1236 return data.added ? 0 : -1; 1237 } 1238 1239 1240 static int wps_button_pushed(struct hostapd_data *hapd, void *ctx) 1241 { 1242 const u8 *p2p_dev_addr = ctx; 1243 if (hapd->wps == NULL) 1244 return 0; 1245 return wps_registrar_button_pushed(hapd->wps->registrar, p2p_dev_addr); 1246 } 1247 1248 1249 int hostapd_wps_button_pushed(struct hostapd_data *hapd, 1250 const u8 *p2p_dev_addr) 1251 { 1252 return hostapd_wps_for_each(hapd, wps_button_pushed, 1253 (void *) p2p_dev_addr); 1254 } 1255 1256 1257 static int wps_cancel(struct hostapd_data *hapd, void *ctx) 1258 { 1259 if (hapd->wps == NULL) 1260 return 0; 1261 1262 wps_registrar_wps_cancel(hapd->wps->registrar); 1263 ap_for_each_sta(hapd, ap_sta_wps_cancel, NULL); 1264 1265 return 0; 1266 } 1267 1268 1269 int hostapd_wps_cancel(struct hostapd_data *hapd) 1270 { 1271 return hostapd_wps_for_each(hapd, wps_cancel, NULL); 1272 } 1273 1274 1275 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da, 1276 const u8 *bssid, 1277 const u8 *ie, size_t ie_len, 1278 int ssi_signal) 1279 { 1280 struct hostapd_data *hapd = ctx; 1281 struct wpabuf *wps_ie; 1282 struct ieee802_11_elems elems; 1283 1284 if (hapd->wps == NULL) 1285 return 0; 1286 1287 if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) { 1288 wpa_printf(MSG_DEBUG, "WPS: Could not parse ProbeReq from " 1289 MACSTR, MAC2STR(addr)); 1290 return 0; 1291 } 1292 1293 if (elems.ssid && elems.ssid_len > 0 && 1294 (elems.ssid_len != hapd->conf->ssid.ssid_len || 1295 os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) != 1296 0)) 1297 return 0; /* Not for us */ 1298 1299 wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA); 1300 if (wps_ie == NULL) 1301 return 0; 1302 if (wps_validate_probe_req(wps_ie, addr) < 0) { 1303 wpabuf_free(wps_ie); 1304 return 0; 1305 } 1306 1307 if (wpabuf_len(wps_ie) > 0) { 1308 int p2p_wildcard = 0; 1309 #ifdef CONFIG_P2P 1310 if (elems.ssid && elems.ssid_len == P2P_WILDCARD_SSID_LEN && 1311 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, 1312 P2P_WILDCARD_SSID_LEN) == 0) 1313 p2p_wildcard = 1; 1314 #endif /* CONFIG_P2P */ 1315 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie, 1316 p2p_wildcard); 1317 #ifdef CONFIG_WPS_UPNP 1318 /* FIX: what exactly should be included in the WLANEvent? 1319 * WPS attributes? Full ProbeReq frame? */ 1320 if (!p2p_wildcard) 1321 upnp_wps_device_send_wlan_event( 1322 hapd->wps_upnp, addr, 1323 UPNP_WPS_WLANEVENT_TYPE_PROBE, wps_ie); 1324 #endif /* CONFIG_WPS_UPNP */ 1325 } 1326 1327 wpabuf_free(wps_ie); 1328 1329 return 0; 1330 } 1331 1332 1333 #ifdef CONFIG_WPS_UPNP 1334 1335 static int hostapd_rx_req_put_wlan_response( 1336 void *priv, enum upnp_wps_wlanevent_type ev_type, 1337 const u8 *mac_addr, const struct wpabuf *msg, 1338 enum wps_msg_type msg_type) 1339 { 1340 struct hostapd_data *hapd = priv; 1341 struct sta_info *sta; 1342 struct upnp_pending_message *p; 1343 1344 wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr=" 1345 MACSTR, ev_type, MAC2STR(mac_addr)); 1346 wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage", 1347 wpabuf_head(msg), wpabuf_len(msg)); 1348 if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) { 1349 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected " 1350 "PutWLANResponse WLANEventType %d", ev_type); 1351 return -1; 1352 } 1353 1354 /* 1355 * EAP response to ongoing to WPS Registration. Send it to EAP-WSC 1356 * server implementation for delivery to the peer. 1357 */ 1358 1359 sta = ap_get_sta(hapd, mac_addr); 1360 #ifndef CONFIG_WPS_STRICT 1361 if (!sta) { 1362 /* 1363 * Workaround - Intel wsccmd uses bogus NewWLANEventMAC: 1364 * Pick STA that is in an ongoing WPS registration without 1365 * checking the MAC address. 1366 */ 1367 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based " 1368 "on NewWLANEventMAC; try wildcard match"); 1369 for (sta = hapd->sta_list; sta; sta = sta->next) { 1370 if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS)) 1371 break; 1372 } 1373 } 1374 #endif /* CONFIG_WPS_STRICT */ 1375 1376 if (!sta || !(sta->flags & WLAN_STA_WPS)) { 1377 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found"); 1378 return 0; 1379 } 1380 1381 p = os_zalloc(sizeof(*p)); 1382 if (p == NULL) 1383 return -1; 1384 os_memcpy(p->addr, sta->addr, ETH_ALEN); 1385 p->msg = wpabuf_dup(msg); 1386 p->type = msg_type; 1387 p->next = hapd->wps->upnp_msgs; 1388 hapd->wps->upnp_msgs = p; 1389 1390 return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap); 1391 } 1392 1393 1394 static int hostapd_wps_upnp_init(struct hostapd_data *hapd, 1395 struct wps_context *wps) 1396 { 1397 struct upnp_wps_device_ctx *ctx; 1398 1399 if (!hapd->conf->upnp_iface) 1400 return 0; 1401 ctx = os_zalloc(sizeof(*ctx)); 1402 if (ctx == NULL) 1403 return -1; 1404 1405 ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response; 1406 if (hapd->conf->ap_pin) 1407 ctx->ap_pin = os_strdup(hapd->conf->ap_pin); 1408 1409 hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd, 1410 hapd->conf->upnp_iface); 1411 if (hapd->wps_upnp == NULL) 1412 return -1; 1413 wps->wps_upnp = hapd->wps_upnp; 1414 1415 return 0; 1416 } 1417 1418 1419 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd) 1420 { 1421 upnp_wps_device_deinit(hapd->wps_upnp, hapd); 1422 } 1423 1424 #endif /* CONFIG_WPS_UPNP */ 1425 1426 1427 int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr, 1428 char *buf, size_t buflen) 1429 { 1430 if (hapd->wps == NULL) 1431 return 0; 1432 return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen); 1433 } 1434 1435 1436 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx) 1437 { 1438 struct hostapd_data *hapd = eloop_data; 1439 wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out"); 1440 hostapd_wps_ap_pin_disable(hapd); 1441 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_PIN_DISABLED); 1442 } 1443 1444 1445 static void hostapd_wps_ap_pin_enable(struct hostapd_data *hapd, int timeout) 1446 { 1447 wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout); 1448 hapd->ap_pin_failures = 0; 1449 hapd->ap_pin_failures_consecutive = 0; 1450 hapd->conf->ap_setup_locked = 0; 1451 if (hapd->wps->ap_setup_locked) { 1452 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED); 1453 hapd->wps->ap_setup_locked = 0; 1454 wps_registrar_update_ie(hapd->wps->registrar); 1455 } 1456 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1457 if (timeout > 0) 1458 eloop_register_timeout(timeout, 0, 1459 hostapd_wps_ap_pin_timeout, hapd, NULL); 1460 } 1461 1462 1463 static int wps_ap_pin_disable(struct hostapd_data *hapd, void *ctx) 1464 { 1465 os_free(hapd->conf->ap_pin); 1466 hapd->conf->ap_pin = NULL; 1467 #ifdef CONFIG_WPS_UPNP 1468 upnp_wps_set_ap_pin(hapd->wps_upnp, NULL); 1469 #endif /* CONFIG_WPS_UPNP */ 1470 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1471 return 0; 1472 } 1473 1474 1475 void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd) 1476 { 1477 wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN"); 1478 hostapd_wps_for_each(hapd, wps_ap_pin_disable, NULL); 1479 } 1480 1481 1482 struct wps_ap_pin_data { 1483 char pin_txt[9]; 1484 int timeout; 1485 }; 1486 1487 1488 static int wps_ap_pin_set(struct hostapd_data *hapd, void *ctx) 1489 { 1490 struct wps_ap_pin_data *data = ctx; 1491 os_free(hapd->conf->ap_pin); 1492 hapd->conf->ap_pin = os_strdup(data->pin_txt); 1493 #ifdef CONFIG_WPS_UPNP 1494 upnp_wps_set_ap_pin(hapd->wps_upnp, data->pin_txt); 1495 #endif /* CONFIG_WPS_UPNP */ 1496 hostapd_wps_ap_pin_enable(hapd, data->timeout); 1497 return 0; 1498 } 1499 1500 1501 const char * hostapd_wps_ap_pin_random(struct hostapd_data *hapd, int timeout) 1502 { 1503 unsigned int pin; 1504 struct wps_ap_pin_data data; 1505 1506 pin = wps_generate_pin(); 1507 os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%08u", pin); 1508 data.timeout = timeout; 1509 hostapd_wps_for_each(hapd, wps_ap_pin_set, &data); 1510 return hapd->conf->ap_pin; 1511 } 1512 1513 1514 const char * hostapd_wps_ap_pin_get(struct hostapd_data *hapd) 1515 { 1516 return hapd->conf->ap_pin; 1517 } 1518 1519 1520 int hostapd_wps_ap_pin_set(struct hostapd_data *hapd, const char *pin, 1521 int timeout) 1522 { 1523 struct wps_ap_pin_data data; 1524 int ret; 1525 1526 ret = os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%s", pin); 1527 if (ret < 0 || ret >= (int) sizeof(data.pin_txt)) 1528 return -1; 1529 data.timeout = timeout; 1530 return hostapd_wps_for_each(hapd, wps_ap_pin_set, &data); 1531 } 1532 1533 1534 static int wps_update_ie(struct hostapd_data *hapd, void *ctx) 1535 { 1536 if (hapd->wps) 1537 wps_registrar_update_ie(hapd->wps->registrar); 1538 return 0; 1539 } 1540 1541 1542 void hostapd_wps_update_ie(struct hostapd_data *hapd) 1543 { 1544 hostapd_wps_for_each(hapd, wps_update_ie, NULL); 1545 } 1546 1547 1548 int hostapd_wps_config_ap(struct hostapd_data *hapd, const char *ssid, 1549 const char *auth, const char *encr, const char *key) 1550 { 1551 struct wps_credential cred; 1552 size_t len; 1553 1554 os_memset(&cred, 0, sizeof(cred)); 1555 1556 len = os_strlen(ssid); 1557 if ((len & 1) || len > 2 * sizeof(cred.ssid) || 1558 hexstr2bin(ssid, cred.ssid, len / 2)) 1559 return -1; 1560 cred.ssid_len = len / 2; 1561 1562 if (os_strncmp(auth, "OPEN", 4) == 0) 1563 cred.auth_type = WPS_AUTH_OPEN; 1564 else if (os_strncmp(auth, "WPAPSK", 6) == 0) 1565 cred.auth_type = WPS_AUTH_WPAPSK; 1566 else if (os_strncmp(auth, "WPA2PSK", 7) == 0) 1567 cred.auth_type = WPS_AUTH_WPA2PSK; 1568 else 1569 return -1; 1570 1571 if (encr) { 1572 if (os_strncmp(encr, "NONE", 4) == 0) 1573 cred.encr_type = WPS_ENCR_NONE; 1574 else if (os_strncmp(encr, "WEP", 3) == 0) 1575 cred.encr_type = WPS_ENCR_WEP; 1576 else if (os_strncmp(encr, "TKIP", 4) == 0) 1577 cred.encr_type = WPS_ENCR_TKIP; 1578 else if (os_strncmp(encr, "CCMP", 4) == 0) 1579 cred.encr_type = WPS_ENCR_AES; 1580 else 1581 return -1; 1582 } else 1583 cred.encr_type = WPS_ENCR_NONE; 1584 1585 if (key) { 1586 len = os_strlen(key); 1587 if ((len & 1) || len > 2 * sizeof(cred.key) || 1588 hexstr2bin(key, cred.key, len / 2)) 1589 return -1; 1590 cred.key_len = len / 2; 1591 } 1592 1593 return wps_registrar_config_ap(hapd->wps->registrar, &cred); 1594 } 1595 1596 1597 #ifdef CONFIG_WPS_NFC 1598 1599 struct wps_nfc_password_token_data { 1600 const u8 *oob_dev_pw; 1601 size_t oob_dev_pw_len; 1602 int added; 1603 }; 1604 1605 1606 static int wps_add_nfc_password_token(struct hostapd_data *hapd, void *ctx) 1607 { 1608 struct wps_nfc_password_token_data *data = ctx; 1609 int ret; 1610 1611 if (hapd->wps == NULL) 1612 return 0; 1613 ret = wps_registrar_add_nfc_password_token(hapd->wps->registrar, 1614 data->oob_dev_pw, 1615 data->oob_dev_pw_len); 1616 if (ret == 0) 1617 data->added++; 1618 return ret; 1619 } 1620 1621 1622 static int hostapd_wps_add_nfc_password_token(struct hostapd_data *hapd, 1623 struct wps_parse_attr *attr) 1624 { 1625 struct wps_nfc_password_token_data data; 1626 1627 data.oob_dev_pw = attr->oob_dev_password; 1628 data.oob_dev_pw_len = attr->oob_dev_password_len; 1629 data.added = 0; 1630 if (hostapd_wps_for_each(hapd, wps_add_nfc_password_token, &data) < 0) 1631 return -1; 1632 return data.added ? 0 : -1; 1633 } 1634 1635 1636 static int hostapd_wps_nfc_tag_process(struct hostapd_data *hapd, 1637 const struct wpabuf *wps) 1638 { 1639 struct wps_parse_attr attr; 1640 1641 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps); 1642 1643 if (wps_parse_msg(wps, &attr)) { 1644 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag"); 1645 return -1; 1646 } 1647 1648 if (attr.oob_dev_password) 1649 return hostapd_wps_add_nfc_password_token(hapd, &attr); 1650 1651 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag"); 1652 return -1; 1653 } 1654 1655 1656 int hostapd_wps_nfc_tag_read(struct hostapd_data *hapd, 1657 const struct wpabuf *data) 1658 { 1659 const struct wpabuf *wps = data; 1660 struct wpabuf *tmp = NULL; 1661 int ret; 1662 1663 if (wpabuf_len(data) < 4) 1664 return -1; 1665 1666 if (*wpabuf_head_u8(data) != 0x10) { 1667 /* Assume this contains full NDEF record */ 1668 tmp = ndef_parse_wifi(data); 1669 if (tmp == NULL) { 1670 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF"); 1671 return -1; 1672 } 1673 wps = tmp; 1674 } 1675 1676 ret = hostapd_wps_nfc_tag_process(hapd, wps); 1677 wpabuf_free(tmp); 1678 return ret; 1679 } 1680 1681 1682 struct wpabuf * hostapd_wps_nfc_config_token(struct hostapd_data *hapd, 1683 int ndef) 1684 { 1685 struct wpabuf *ret; 1686 1687 if (hapd->wps == NULL) 1688 return NULL; 1689 1690 ret = wps_get_oob_cred(hapd->wps); 1691 if (ndef && ret) { 1692 struct wpabuf *tmp; 1693 tmp = ndef_build_wifi(ret); 1694 wpabuf_free(ret); 1695 if (tmp == NULL) 1696 return NULL; 1697 ret = tmp; 1698 } 1699 1700 return ret; 1701 } 1702 1703 1704 struct wpabuf * hostapd_wps_nfc_hs_cr(struct hostapd_data *hapd, int ndef) 1705 { 1706 /* 1707 * Handover Select carrier record for WPS uses the same format as 1708 * configuration token. 1709 */ 1710 return hostapd_wps_nfc_config_token(hapd, ndef); 1711 } 1712 1713 1714 struct wpabuf * hostapd_wps_nfc_token_gen(struct hostapd_data *hapd, int ndef) 1715 { 1716 if (hapd->conf->wps_nfc_pw_from_config) { 1717 return wps_nfc_token_build(ndef, 1718 hapd->conf->wps_nfc_dev_pw_id, 1719 hapd->conf->wps_nfc_dh_pubkey, 1720 hapd->conf->wps_nfc_dev_pw); 1721 } 1722 1723 return wps_nfc_token_gen(ndef, &hapd->conf->wps_nfc_dev_pw_id, 1724 &hapd->conf->wps_nfc_dh_pubkey, 1725 &hapd->conf->wps_nfc_dh_privkey, 1726 &hapd->conf->wps_nfc_dev_pw); 1727 } 1728 1729 1730 int hostapd_wps_nfc_token_enable(struct hostapd_data *hapd) 1731 { 1732 struct wps_context *wps = hapd->wps; 1733 struct wpabuf *pw; 1734 1735 if (wps == NULL) 1736 return -1; 1737 1738 if (!hapd->conf->wps_nfc_dh_pubkey || 1739 !hapd->conf->wps_nfc_dh_privkey || 1740 !hapd->conf->wps_nfc_dev_pw || 1741 !hapd->conf->wps_nfc_dev_pw_id) 1742 return -1; 1743 1744 hostapd_wps_nfc_clear(wps); 1745 wps->ap_nfc_dev_pw_id = hapd->conf->wps_nfc_dev_pw_id; 1746 wps->ap_nfc_dh_pubkey = wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey); 1747 wps->ap_nfc_dh_privkey = wpabuf_dup(hapd->conf->wps_nfc_dh_privkey); 1748 pw = hapd->conf->wps_nfc_dev_pw; 1749 wps->ap_nfc_dev_pw = wpabuf_alloc( 1750 wpabuf_len(pw) * 2 + 1); 1751 if (wps->ap_nfc_dev_pw) { 1752 wpa_snprintf_hex_uppercase( 1753 (char *) wpabuf_put(wps->ap_nfc_dev_pw, 1754 wpabuf_len(pw) * 2), 1755 wpabuf_len(pw) * 2 + 1, 1756 wpabuf_head(pw), wpabuf_len(pw)); 1757 } 1758 1759 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey || 1760 !wps->ap_nfc_dev_pw) { 1761 hostapd_wps_nfc_clear(wps); 1762 return -1; 1763 } 1764 1765 return 0; 1766 } 1767 1768 1769 void hostapd_wps_nfc_token_disable(struct hostapd_data *hapd) 1770 { 1771 hostapd_wps_nfc_clear(hapd->wps); 1772 } 1773 1774 #endif /* CONFIG_WPS_NFC */ 1775
