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 "crypto/dh_groups.h" 15 #include "crypto/dh_group5.h" 16 #include "common/wpa_ctrl.h" 17 #include "common/ieee802_11_defs.h" 18 #include "common/ieee802_11_common.h" 19 #include "eapol_auth/eapol_auth_sm.h" 20 #include "eapol_auth/eapol_auth_sm_i.h" 21 #include "wps/wps.h" 22 #include "wps/wps_defs.h" 23 #include "wps/wps_dev_attr.h" 24 #include "wps/wps_attr_parse.h" 25 #include "hostapd.h" 26 #include "ap_config.h" 27 #include "ap_drv_ops.h" 28 #include "beacon.h" 29 #include "sta_info.h" 30 #include "wps_hostapd.h" 31 32 33 #ifdef CONFIG_WPS_UPNP 34 #include "wps/wps_upnp.h" 35 static int hostapd_wps_upnp_init(struct hostapd_data *hapd, 36 struct wps_context *wps); 37 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd); 38 #endif /* CONFIG_WPS_UPNP */ 39 40 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da, 41 const u8 *bssid, 42 const u8 *ie, size_t ie_len, 43 int ssi_signal); 44 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx); 45 46 47 struct wps_for_each_data { 48 int (*func)(struct hostapd_data *h, void *ctx); 49 void *ctx; 50 }; 51 52 53 static int wps_for_each(struct hostapd_iface *iface, void *ctx) 54 { 55 struct wps_for_each_data *data = ctx; 56 size_t j; 57 58 if (iface == NULL) 59 return 0; 60 for (j = 0; j < iface->num_bss; j++) { 61 struct hostapd_data *hapd = iface->bss[j]; 62 int ret = data->func(hapd, data->ctx); 63 if (ret) 64 return ret; 65 } 66 67 return 0; 68 } 69 70 71 static int hostapd_wps_for_each(struct hostapd_data *hapd, 72 int (*func)(struct hostapd_data *h, void *ctx), 73 void *ctx) 74 { 75 struct hostapd_iface *iface = hapd->iface; 76 struct wps_for_each_data data; 77 data.func = func; 78 data.ctx = ctx; 79 if (iface->interfaces == NULL || 80 iface->interfaces->for_each_interface == NULL) 81 return wps_for_each(iface, &data); 82 return iface->interfaces->for_each_interface(iface->interfaces, 83 wps_for_each, &data); 84 } 85 86 87 static int hostapd_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk, 88 size_t psk_len) 89 { 90 struct hostapd_data *hapd = ctx; 91 struct hostapd_wpa_psk *p; 92 struct hostapd_ssid *ssid = &hapd->conf->ssid; 93 94 wpa_printf(MSG_DEBUG, "Received new WPA/WPA2-PSK from WPS for STA " 95 MACSTR, MAC2STR(mac_addr)); 96 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len); 97 98 if (psk_len != PMK_LEN) { 99 wpa_printf(MSG_DEBUG, "Unexpected PSK length %lu", 100 (unsigned long) psk_len); 101 return -1; 102 } 103 104 /* Add the new PSK to runtime PSK list */ 105 p = os_zalloc(sizeof(*p)); 106 if (p == NULL) 107 return -1; 108 os_memcpy(p->addr, mac_addr, ETH_ALEN); 109 os_memcpy(p->psk, psk, PMK_LEN); 110 111 p->next = ssid->wpa_psk; 112 ssid->wpa_psk = p; 113 114 if (ssid->wpa_psk_file) { 115 FILE *f; 116 char hex[PMK_LEN * 2 + 1]; 117 /* Add the new PSK to PSK list file */ 118 f = fopen(ssid->wpa_psk_file, "a"); 119 if (f == NULL) { 120 wpa_printf(MSG_DEBUG, "Failed to add the PSK to " 121 "'%s'", ssid->wpa_psk_file); 122 return -1; 123 } 124 125 wpa_snprintf_hex(hex, sizeof(hex), psk, psk_len); 126 fprintf(f, MACSTR " %s\n", MAC2STR(mac_addr), hex); 127 fclose(f); 128 } 129 130 return 0; 131 } 132 133 134 static int hostapd_wps_set_ie_cb(void *ctx, struct wpabuf *beacon_ie, 135 struct wpabuf *probe_resp_ie) 136 { 137 struct hostapd_data *hapd = ctx; 138 wpabuf_free(hapd->wps_beacon_ie); 139 hapd->wps_beacon_ie = beacon_ie; 140 wpabuf_free(hapd->wps_probe_resp_ie); 141 hapd->wps_probe_resp_ie = probe_resp_ie; 142 if (hapd->beacon_set_done) 143 ieee802_11_set_beacon(hapd); 144 return hostapd_set_ap_wps_ie(hapd); 145 } 146 147 148 static void hostapd_wps_pin_needed_cb(void *ctx, const u8 *uuid_e, 149 const struct wps_device_data *dev) 150 { 151 struct hostapd_data *hapd = ctx; 152 char uuid[40], txt[400]; 153 int len; 154 char devtype[WPS_DEV_TYPE_BUFSIZE]; 155 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid))) 156 return; 157 wpa_printf(MSG_DEBUG, "WPS: PIN needed for E-UUID %s", uuid); 158 len = os_snprintf(txt, sizeof(txt), WPS_EVENT_PIN_NEEDED 159 "%s " MACSTR " [%s|%s|%s|%s|%s|%s]", 160 uuid, MAC2STR(dev->mac_addr), dev->device_name, 161 dev->manufacturer, dev->model_name, 162 dev->model_number, dev->serial_number, 163 wps_dev_type_bin2str(dev->pri_dev_type, devtype, 164 sizeof(devtype))); 165 if (len > 0 && len < (int) sizeof(txt)) 166 wpa_msg(hapd->msg_ctx, MSG_INFO, "%s", txt); 167 168 if (hapd->conf->wps_pin_requests) { 169 FILE *f; 170 struct os_time t; 171 f = fopen(hapd->conf->wps_pin_requests, "a"); 172 if (f == NULL) 173 return; 174 os_get_time(&t); 175 fprintf(f, "%ld\t%s\t" MACSTR "\t%s\t%s\t%s\t%s\t%s" 176 "\t%s\n", 177 t.sec, uuid, MAC2STR(dev->mac_addr), dev->device_name, 178 dev->manufacturer, dev->model_name, dev->model_number, 179 dev->serial_number, 180 wps_dev_type_bin2str(dev->pri_dev_type, devtype, 181 sizeof(devtype))); 182 fclose(f); 183 } 184 } 185 186 187 struct wps_stop_reg_data { 188 struct hostapd_data *current_hapd; 189 const u8 *uuid_e; 190 const u8 *dev_pw; 191 size_t dev_pw_len; 192 }; 193 194 static int wps_stop_registrar(struct hostapd_data *hapd, void *ctx) 195 { 196 struct wps_stop_reg_data *data = ctx; 197 if (hapd != data->current_hapd && hapd->wps != NULL) 198 wps_registrar_complete(hapd->wps->registrar, data->uuid_e, 199 data->dev_pw, data->dev_pw_len); 200 return 0; 201 } 202 203 204 static void hostapd_wps_reg_success_cb(void *ctx, const u8 *mac_addr, 205 const u8 *uuid_e, const u8 *dev_pw, 206 size_t dev_pw_len) 207 { 208 struct hostapd_data *hapd = ctx; 209 char uuid[40]; 210 struct wps_stop_reg_data data; 211 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid))) 212 return; 213 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_REG_SUCCESS MACSTR " %s", 214 MAC2STR(mac_addr), uuid); 215 if (hapd->wps_reg_success_cb) 216 hapd->wps_reg_success_cb(hapd->wps_reg_success_cb_ctx, 217 mac_addr, uuid_e); 218 data.current_hapd = hapd; 219 data.uuid_e = uuid_e; 220 data.dev_pw = dev_pw; 221 data.dev_pw_len = dev_pw_len; 222 hostapd_wps_for_each(hapd, wps_stop_registrar, &data); 223 } 224 225 226 static void hostapd_wps_enrollee_seen_cb(void *ctx, const u8 *addr, 227 const u8 *uuid_e, 228 const u8 *pri_dev_type, 229 u16 config_methods, 230 u16 dev_password_id, u8 request_type, 231 const char *dev_name) 232 { 233 struct hostapd_data *hapd = ctx; 234 char uuid[40]; 235 char devtype[WPS_DEV_TYPE_BUFSIZE]; 236 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid))) 237 return; 238 if (dev_name == NULL) 239 dev_name = ""; 240 wpa_msg_ctrl(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ENROLLEE_SEEN MACSTR 241 " %s %s 0x%x %u %u [%s]", 242 MAC2STR(addr), uuid, 243 wps_dev_type_bin2str(pri_dev_type, devtype, 244 sizeof(devtype)), 245 config_methods, dev_password_id, request_type, dev_name); 246 } 247 248 249 static int str_starts(const char *str, const char *start) 250 { 251 return os_strncmp(str, start, os_strlen(start)) == 0; 252 } 253 254 255 static void wps_reload_config(void *eloop_data, void *user_ctx) 256 { 257 struct hostapd_iface *iface = eloop_data; 258 259 wpa_printf(MSG_DEBUG, "WPS: Reload configuration data"); 260 if (iface->interfaces == NULL || 261 iface->interfaces->reload_config(iface) < 0) { 262 wpa_printf(MSG_WARNING, "WPS: Failed to reload the updated " 263 "configuration"); 264 } 265 } 266 267 268 static void hapd_new_ap_event(struct hostapd_data *hapd, const u8 *attr, 269 size_t attr_len) 270 { 271 size_t blen = attr_len * 2 + 1; 272 char *buf = os_malloc(blen); 273 if (buf) { 274 wpa_snprintf_hex(buf, blen, attr, attr_len); 275 wpa_msg(hapd->msg_ctx, MSG_INFO, 276 WPS_EVENT_NEW_AP_SETTINGS "%s", buf); 277 os_free(buf); 278 } 279 } 280 281 282 static int hapd_wps_cred_cb(struct hostapd_data *hapd, void *ctx) 283 { 284 const struct wps_credential *cred = ctx; 285 FILE *oconf, *nconf; 286 size_t len, i; 287 char *tmp_fname; 288 char buf[1024]; 289 int multi_bss; 290 int wpa; 291 292 if (hapd->wps == NULL) 293 return 0; 294 295 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute", 296 cred->cred_attr, cred->cred_attr_len); 297 298 wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings"); 299 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len); 300 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x", 301 cred->auth_type); 302 wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type); 303 wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx); 304 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key", 305 cred->key, cred->key_len); 306 wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR, 307 MAC2STR(cred->mac_addr)); 308 309 if ((hapd->conf->wps_cred_processing == 1 || 310 hapd->conf->wps_cred_processing == 2) && cred->cred_attr) { 311 hapd_new_ap_event(hapd, cred->cred_attr, cred->cred_attr_len); 312 } else if (hapd->conf->wps_cred_processing == 1 || 313 hapd->conf->wps_cred_processing == 2) { 314 struct wpabuf *attr; 315 attr = wpabuf_alloc(200); 316 if (attr && wps_build_credential_wrap(attr, cred) == 0) 317 hapd_new_ap_event(hapd, wpabuf_head_u8(attr), 318 wpabuf_len(attr)); 319 wpabuf_free(attr); 320 } else 321 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS); 322 323 if (hapd->conf->wps_cred_processing == 1) 324 return 0; 325 326 os_memcpy(hapd->wps->ssid, cred->ssid, cred->ssid_len); 327 hapd->wps->ssid_len = cred->ssid_len; 328 hapd->wps->encr_types = cred->encr_type; 329 hapd->wps->auth_types = cred->auth_type; 330 if (cred->key_len == 0) { 331 os_free(hapd->wps->network_key); 332 hapd->wps->network_key = NULL; 333 hapd->wps->network_key_len = 0; 334 } else { 335 if (hapd->wps->network_key == NULL || 336 hapd->wps->network_key_len < cred->key_len) { 337 hapd->wps->network_key_len = 0; 338 os_free(hapd->wps->network_key); 339 hapd->wps->network_key = os_malloc(cred->key_len); 340 if (hapd->wps->network_key == NULL) 341 return -1; 342 } 343 hapd->wps->network_key_len = cred->key_len; 344 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len); 345 } 346 hapd->wps->wps_state = WPS_STATE_CONFIGURED; 347 348 if (hapd->iface->config_fname == NULL) 349 return 0; 350 len = os_strlen(hapd->iface->config_fname) + 5; 351 tmp_fname = os_malloc(len); 352 if (tmp_fname == NULL) 353 return -1; 354 os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname); 355 356 oconf = fopen(hapd->iface->config_fname, "r"); 357 if (oconf == NULL) { 358 wpa_printf(MSG_WARNING, "WPS: Could not open current " 359 "configuration file"); 360 os_free(tmp_fname); 361 return -1; 362 } 363 364 nconf = fopen(tmp_fname, "w"); 365 if (nconf == NULL) { 366 wpa_printf(MSG_WARNING, "WPS: Could not write updated " 367 "configuration file"); 368 os_free(tmp_fname); 369 fclose(oconf); 370 return -1; 371 } 372 373 fprintf(nconf, "# WPS configuration - START\n"); 374 375 fprintf(nconf, "wps_state=2\n"); 376 377 if (is_hex(cred->ssid, cred->ssid_len)) { 378 fprintf(nconf, "ssid2="); 379 for (i = 0; i < cred->ssid_len; i++) 380 fprintf(nconf, "%02x", cred->ssid[i]); 381 fprintf(nconf, "\n"); 382 } else { 383 fprintf(nconf, "ssid="); 384 for (i = 0; i < cred->ssid_len; i++) 385 fputc(cred->ssid[i], nconf); 386 fprintf(nconf, "\n"); 387 } 388 389 if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) && 390 (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))) 391 wpa = 3; 392 else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) 393 wpa = 2; 394 else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)) 395 wpa = 1; 396 else 397 wpa = 0; 398 399 if (wpa) { 400 char *prefix; 401 fprintf(nconf, "wpa=%d\n", wpa); 402 403 fprintf(nconf, "wpa_key_mgmt="); 404 prefix = ""; 405 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) { 406 fprintf(nconf, "WPA-EAP"); 407 prefix = " "; 408 } 409 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK)) 410 fprintf(nconf, "%sWPA-PSK", prefix); 411 fprintf(nconf, "\n"); 412 413 fprintf(nconf, "wpa_pairwise="); 414 prefix = ""; 415 if (cred->encr_type & WPS_ENCR_AES) { 416 fprintf(nconf, "CCMP"); 417 prefix = " "; 418 } 419 if (cred->encr_type & WPS_ENCR_TKIP) { 420 fprintf(nconf, "%sTKIP", prefix); 421 } 422 fprintf(nconf, "\n"); 423 424 if (cred->key_len >= 8 && cred->key_len < 64) { 425 fprintf(nconf, "wpa_passphrase="); 426 for (i = 0; i < cred->key_len; i++) 427 fputc(cred->key[i], nconf); 428 fprintf(nconf, "\n"); 429 } else if (cred->key_len == 64) { 430 fprintf(nconf, "wpa_psk="); 431 for (i = 0; i < cred->key_len; i++) 432 fputc(cred->key[i], nconf); 433 fprintf(nconf, "\n"); 434 } else { 435 wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu " 436 "for WPA/WPA2", 437 (unsigned long) cred->key_len); 438 } 439 440 fprintf(nconf, "auth_algs=1\n"); 441 } else { 442 if ((cred->auth_type & WPS_AUTH_OPEN) && 443 (cred->auth_type & WPS_AUTH_SHARED)) 444 fprintf(nconf, "auth_algs=3\n"); 445 else if (cred->auth_type & WPS_AUTH_SHARED) 446 fprintf(nconf, "auth_algs=2\n"); 447 else 448 fprintf(nconf, "auth_algs=1\n"); 449 450 if (cred->encr_type & WPS_ENCR_WEP && cred->key_idx <= 4) { 451 int key_idx = cred->key_idx; 452 if (key_idx) 453 key_idx--; 454 fprintf(nconf, "wep_default_key=%d\n", key_idx); 455 fprintf(nconf, "wep_key%d=", key_idx); 456 if (cred->key_len == 10 || cred->key_len == 26) { 457 /* WEP key as a hex string */ 458 for (i = 0; i < cred->key_len; i++) 459 fputc(cred->key[i], nconf); 460 } else { 461 /* Raw WEP key; convert to hex */ 462 for (i = 0; i < cred->key_len; i++) 463 fprintf(nconf, "%02x", cred->key[i]); 464 } 465 fprintf(nconf, "\n"); 466 } 467 } 468 469 fprintf(nconf, "# WPS configuration - END\n"); 470 471 multi_bss = 0; 472 while (fgets(buf, sizeof(buf), oconf)) { 473 if (os_strncmp(buf, "bss=", 4) == 0) 474 multi_bss = 1; 475 if (!multi_bss && 476 (str_starts(buf, "ssid=") || 477 str_starts(buf, "ssid2=") || 478 str_starts(buf, "auth_algs=") || 479 str_starts(buf, "wep_default_key=") || 480 str_starts(buf, "wep_key") || 481 str_starts(buf, "wps_state=") || 482 str_starts(buf, "wpa=") || 483 str_starts(buf, "wpa_psk=") || 484 str_starts(buf, "wpa_pairwise=") || 485 str_starts(buf, "rsn_pairwise=") || 486 str_starts(buf, "wpa_key_mgmt=") || 487 str_starts(buf, "wpa_passphrase="))) { 488 fprintf(nconf, "#WPS# %s", buf); 489 } else 490 fprintf(nconf, "%s", buf); 491 } 492 493 fclose(nconf); 494 fclose(oconf); 495 496 if (rename(tmp_fname, hapd->iface->config_fname) < 0) { 497 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated " 498 "configuration file: %s", strerror(errno)); 499 os_free(tmp_fname); 500 return -1; 501 } 502 503 os_free(tmp_fname); 504 505 /* Schedule configuration reload after short period of time to allow 506 * EAP-WSC to be finished. 507 */ 508 eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface, 509 NULL); 510 511 wpa_printf(MSG_DEBUG, "WPS: AP configuration updated"); 512 513 return 0; 514 } 515 516 517 static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred) 518 { 519 struct hostapd_data *hapd = ctx; 520 return hostapd_wps_for_each(hapd, hapd_wps_cred_cb, (void *) cred); 521 } 522 523 524 static void hostapd_wps_reenable_ap_pin(void *eloop_data, void *user_ctx) 525 { 526 struct hostapd_data *hapd = eloop_data; 527 528 if (hapd->conf->ap_setup_locked) 529 return; 530 if (hapd->ap_pin_failures_consecutive >= 10) 531 return; 532 533 wpa_printf(MSG_DEBUG, "WPS: Re-enable AP PIN"); 534 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED); 535 hapd->wps->ap_setup_locked = 0; 536 wps_registrar_update_ie(hapd->wps->registrar); 537 } 538 539 540 static int wps_pwd_auth_fail(struct hostapd_data *hapd, void *ctx) 541 { 542 struct wps_event_pwd_auth_fail *data = ctx; 543 544 if (!data->enrollee || hapd->conf->ap_pin == NULL || hapd->wps == NULL) 545 return 0; 546 547 /* 548 * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup 549 * for some time if this happens multiple times to slow down brute 550 * force attacks. 551 */ 552 hapd->ap_pin_failures++; 553 hapd->ap_pin_failures_consecutive++; 554 wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u " 555 "(%u consecutive)", 556 hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive); 557 if (hapd->ap_pin_failures < 3) 558 return 0; 559 560 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED); 561 hapd->wps->ap_setup_locked = 1; 562 563 wps_registrar_update_ie(hapd->wps->registrar); 564 565 if (!hapd->conf->ap_setup_locked && 566 hapd->ap_pin_failures_consecutive >= 10) { 567 /* 568 * In indefinite lockdown - disable automatic AP PIN 569 * reenablement. 570 */ 571 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 572 wpa_printf(MSG_DEBUG, "WPS: AP PIN disabled indefinitely"); 573 } else if (!hapd->conf->ap_setup_locked) { 574 if (hapd->ap_pin_lockout_time == 0) 575 hapd->ap_pin_lockout_time = 60; 576 else if (hapd->ap_pin_lockout_time < 365 * 24 * 60 * 60 && 577 (hapd->ap_pin_failures % 3) == 0) 578 hapd->ap_pin_lockout_time *= 2; 579 580 wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN for %u seconds", 581 hapd->ap_pin_lockout_time); 582 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 583 eloop_register_timeout(hapd->ap_pin_lockout_time, 0, 584 hostapd_wps_reenable_ap_pin, hapd, 585 NULL); 586 } 587 588 return 0; 589 } 590 591 592 static void hostapd_pwd_auth_fail(struct hostapd_data *hapd, 593 struct wps_event_pwd_auth_fail *data) 594 { 595 hostapd_wps_for_each(hapd, wps_pwd_auth_fail, data); 596 } 597 598 599 static int wps_ap_pin_success(struct hostapd_data *hapd, void *ctx) 600 { 601 if (hapd->conf->ap_pin == NULL || hapd->wps == NULL) 602 return 0; 603 604 if (hapd->ap_pin_failures_consecutive == 0) 605 return 0; 606 607 wpa_printf(MSG_DEBUG, "WPS: Clear consecutive AP PIN failure counter " 608 "- total validation failures %u (%u consecutive)", 609 hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive); 610 hapd->ap_pin_failures_consecutive = 0; 611 612 return 0; 613 } 614 615 616 static void hostapd_wps_ap_pin_success(struct hostapd_data *hapd) 617 { 618 hostapd_wps_for_each(hapd, wps_ap_pin_success, NULL); 619 } 620 621 622 static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = { 623 "No Error", /* WPS_EI_NO_ERROR */ 624 "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */ 625 "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */ 626 }; 627 628 static void hostapd_wps_event_fail(struct hostapd_data *hapd, 629 struct wps_event_fail *fail) 630 { 631 if (fail->error_indication > 0 && 632 fail->error_indication < NUM_WPS_EI_VALUES) { 633 wpa_msg(hapd->msg_ctx, MSG_INFO, 634 WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)", 635 fail->msg, fail->config_error, fail->error_indication, 636 wps_event_fail_reason[fail->error_indication]); 637 } else { 638 wpa_msg(hapd->msg_ctx, MSG_INFO, 639 WPS_EVENT_FAIL "msg=%d config_error=%d", 640 fail->msg, fail->config_error); 641 } 642 } 643 644 645 static void hostapd_wps_event_cb(void *ctx, enum wps_event event, 646 union wps_event_data *data) 647 { 648 struct hostapd_data *hapd = ctx; 649 650 switch (event) { 651 case WPS_EV_M2D: 652 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_M2D); 653 break; 654 case WPS_EV_FAIL: 655 hostapd_wps_event_fail(hapd, &data->fail); 656 break; 657 case WPS_EV_SUCCESS: 658 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_SUCCESS); 659 break; 660 case WPS_EV_PWD_AUTH_FAIL: 661 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail); 662 break; 663 case WPS_EV_PBC_OVERLAP: 664 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_OVERLAP); 665 break; 666 case WPS_EV_PBC_TIMEOUT: 667 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_TIMEOUT); 668 break; 669 case WPS_EV_ER_AP_ADD: 670 break; 671 case WPS_EV_ER_AP_REMOVE: 672 break; 673 case WPS_EV_ER_ENROLLEE_ADD: 674 break; 675 case WPS_EV_ER_ENROLLEE_REMOVE: 676 break; 677 case WPS_EV_ER_AP_SETTINGS: 678 break; 679 case WPS_EV_ER_SET_SELECTED_REGISTRAR: 680 break; 681 case WPS_EV_AP_PIN_SUCCESS: 682 hostapd_wps_ap_pin_success(hapd); 683 break; 684 } 685 if (hapd->wps_event_cb) 686 hapd->wps_event_cb(hapd->wps_event_cb_ctx, event, data); 687 } 688 689 690 static void hostapd_wps_clear_ies(struct hostapd_data *hapd) 691 { 692 wpabuf_free(hapd->wps_beacon_ie); 693 hapd->wps_beacon_ie = NULL; 694 695 wpabuf_free(hapd->wps_probe_resp_ie); 696 hapd->wps_probe_resp_ie = NULL; 697 698 hostapd_set_ap_wps_ie(hapd); 699 } 700 701 702 static int get_uuid_cb(struct hostapd_iface *iface, void *ctx) 703 { 704 const u8 **uuid = ctx; 705 size_t j; 706 707 if (iface == NULL) 708 return 0; 709 for (j = 0; j < iface->num_bss; j++) { 710 struct hostapd_data *hapd = iface->bss[j]; 711 if (hapd->wps && !is_nil_uuid(hapd->wps->uuid)) { 712 *uuid = hapd->wps->uuid; 713 return 1; 714 } 715 } 716 717 return 0; 718 } 719 720 721 static const u8 * get_own_uuid(struct hostapd_iface *iface) 722 { 723 const u8 *uuid; 724 if (iface->interfaces == NULL || 725 iface->interfaces->for_each_interface == NULL) 726 return NULL; 727 uuid = NULL; 728 iface->interfaces->for_each_interface(iface->interfaces, get_uuid_cb, 729 &uuid); 730 return uuid; 731 } 732 733 734 static int count_interface_cb(struct hostapd_iface *iface, void *ctx) 735 { 736 int *count= ctx; 737 (*count)++; 738 return 0; 739 } 740 741 742 static int interface_count(struct hostapd_iface *iface) 743 { 744 int count = 0; 745 if (iface->interfaces == NULL || 746 iface->interfaces->for_each_interface == NULL) 747 return 0; 748 iface->interfaces->for_each_interface(iface->interfaces, 749 count_interface_cb, &count); 750 return count; 751 } 752 753 754 static int hostapd_wps_set_vendor_ext(struct hostapd_data *hapd, 755 struct wps_context *wps) 756 { 757 int i; 758 759 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) { 760 wpabuf_free(wps->dev.vendor_ext[i]); 761 wps->dev.vendor_ext[i] = NULL; 762 763 if (hapd->conf->wps_vendor_ext[i] == NULL) 764 continue; 765 766 wps->dev.vendor_ext[i] = 767 wpabuf_dup(hapd->conf->wps_vendor_ext[i]); 768 if (wps->dev.vendor_ext[i] == NULL) { 769 while (--i >= 0) 770 wpabuf_free(wps->dev.vendor_ext[i]); 771 return -1; 772 } 773 } 774 775 return 0; 776 } 777 778 779 int hostapd_init_wps(struct hostapd_data *hapd, 780 struct hostapd_bss_config *conf) 781 { 782 struct wps_context *wps; 783 struct wps_registrar_config cfg; 784 785 if (conf->wps_state == 0) { 786 hostapd_wps_clear_ies(hapd); 787 return 0; 788 } 789 790 wps = os_zalloc(sizeof(*wps)); 791 if (wps == NULL) 792 return -1; 793 794 wps->cred_cb = hostapd_wps_cred_cb; 795 wps->event_cb = hostapd_wps_event_cb; 796 wps->cb_ctx = hapd; 797 798 os_memset(&cfg, 0, sizeof(cfg)); 799 wps->wps_state = hapd->conf->wps_state; 800 wps->ap_setup_locked = hapd->conf->ap_setup_locked; 801 if (is_nil_uuid(hapd->conf->uuid)) { 802 const u8 *uuid; 803 uuid = get_own_uuid(hapd->iface); 804 if (uuid) { 805 os_memcpy(wps->uuid, uuid, UUID_LEN); 806 wpa_hexdump(MSG_DEBUG, "WPS: Clone UUID from another " 807 "interface", wps->uuid, UUID_LEN); 808 } else { 809 uuid_gen_mac_addr(hapd->own_addr, wps->uuid); 810 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC " 811 "address", wps->uuid, UUID_LEN); 812 } 813 } else { 814 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN); 815 wpa_hexdump(MSG_DEBUG, "WPS: Use configured UUID", 816 wps->uuid, UUID_LEN); 817 } 818 wps->ssid_len = hapd->conf->ssid.ssid_len; 819 os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len); 820 wps->ap = 1; 821 os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN); 822 wps->dev.device_name = hapd->conf->device_name ? 823 os_strdup(hapd->conf->device_name) : NULL; 824 wps->dev.manufacturer = hapd->conf->manufacturer ? 825 os_strdup(hapd->conf->manufacturer) : NULL; 826 wps->dev.model_name = hapd->conf->model_name ? 827 os_strdup(hapd->conf->model_name) : NULL; 828 wps->dev.model_number = hapd->conf->model_number ? 829 os_strdup(hapd->conf->model_number) : NULL; 830 wps->dev.serial_number = hapd->conf->serial_number ? 831 os_strdup(hapd->conf->serial_number) : NULL; 832 wps->config_methods = 833 wps_config_methods_str2bin(hapd->conf->config_methods); 834 #ifdef CONFIG_WPS2 835 if ((wps->config_methods & 836 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY | 837 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) { 838 wpa_printf(MSG_INFO, "WPS: Converting display to " 839 "virtual_display for WPS 2.0 compliance"); 840 wps->config_methods |= WPS_CONFIG_VIRT_DISPLAY; 841 } 842 if ((wps->config_methods & 843 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON | 844 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) { 845 wpa_printf(MSG_INFO, "WPS: Converting push_button to " 846 "virtual_push_button for WPS 2.0 compliance"); 847 wps->config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON; 848 } 849 #endif /* CONFIG_WPS2 */ 850 os_memcpy(wps->dev.pri_dev_type, hapd->conf->device_type, 851 WPS_DEV_TYPE_LEN); 852 853 if (hostapd_wps_set_vendor_ext(hapd, wps) < 0) { 854 os_free(wps); 855 return -1; 856 } 857 858 wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version); 859 860 if (conf->wps_rf_bands) { 861 wps->dev.rf_bands = conf->wps_rf_bands; 862 } else { 863 wps->dev.rf_bands = 864 hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ? 865 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */ 866 } 867 868 if (conf->wpa & WPA_PROTO_RSN) { 869 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) 870 wps->auth_types |= WPS_AUTH_WPA2PSK; 871 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) 872 wps->auth_types |= WPS_AUTH_WPA2; 873 874 if (conf->rsn_pairwise & WPA_CIPHER_CCMP) 875 wps->encr_types |= WPS_ENCR_AES; 876 if (conf->rsn_pairwise & WPA_CIPHER_TKIP) 877 wps->encr_types |= WPS_ENCR_TKIP; 878 } 879 880 if (conf->wpa & WPA_PROTO_WPA) { 881 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) 882 wps->auth_types |= WPS_AUTH_WPAPSK; 883 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) 884 wps->auth_types |= WPS_AUTH_WPA; 885 886 if (conf->wpa_pairwise & WPA_CIPHER_CCMP) 887 wps->encr_types |= WPS_ENCR_AES; 888 if (conf->wpa_pairwise & WPA_CIPHER_TKIP) 889 wps->encr_types |= WPS_ENCR_TKIP; 890 } 891 892 if (conf->ssid.security_policy == SECURITY_PLAINTEXT) { 893 wps->encr_types |= WPS_ENCR_NONE; 894 wps->auth_types |= WPS_AUTH_OPEN; 895 } else if (conf->ssid.security_policy == SECURITY_STATIC_WEP) { 896 wps->encr_types |= WPS_ENCR_WEP; 897 if (conf->auth_algs & WPA_AUTH_ALG_OPEN) 898 wps->auth_types |= WPS_AUTH_OPEN; 899 if (conf->auth_algs & WPA_AUTH_ALG_SHARED) 900 wps->auth_types |= WPS_AUTH_SHARED; 901 } else if (conf->ssid.security_policy == SECURITY_IEEE_802_1X) { 902 wps->auth_types |= WPS_AUTH_OPEN; 903 if (conf->default_wep_key_len) 904 wps->encr_types |= WPS_ENCR_WEP; 905 else 906 wps->encr_types |= WPS_ENCR_NONE; 907 } 908 909 if (conf->ssid.wpa_psk_file) { 910 /* Use per-device PSKs */ 911 } else if (conf->ssid.wpa_passphrase) { 912 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase); 913 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase); 914 } else if (conf->ssid.wpa_psk) { 915 wps->network_key = os_malloc(2 * PMK_LEN + 1); 916 if (wps->network_key == NULL) { 917 os_free(wps); 918 return -1; 919 } 920 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1, 921 conf->ssid.wpa_psk->psk, PMK_LEN); 922 wps->network_key_len = 2 * PMK_LEN; 923 } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) { 924 wps->network_key = os_malloc(conf->ssid.wep.len[0]); 925 if (wps->network_key == NULL) { 926 os_free(wps); 927 return -1; 928 } 929 os_memcpy(wps->network_key, conf->ssid.wep.key[0], 930 conf->ssid.wep.len[0]); 931 wps->network_key_len = conf->ssid.wep.len[0]; 932 } 933 934 if (conf->ssid.wpa_psk) { 935 os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN); 936 wps->psk_set = 1; 937 } 938 939 if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) { 940 /* Override parameters to enable security by default */ 941 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK; 942 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP; 943 } 944 945 wps->ap_settings = conf->ap_settings; 946 wps->ap_settings_len = conf->ap_settings_len; 947 948 cfg.new_psk_cb = hostapd_wps_new_psk_cb; 949 cfg.set_ie_cb = hostapd_wps_set_ie_cb; 950 cfg.pin_needed_cb = hostapd_wps_pin_needed_cb; 951 cfg.reg_success_cb = hostapd_wps_reg_success_cb; 952 cfg.enrollee_seen_cb = hostapd_wps_enrollee_seen_cb; 953 cfg.cb_ctx = hapd; 954 cfg.skip_cred_build = conf->skip_cred_build; 955 cfg.extra_cred = conf->extra_cred; 956 cfg.extra_cred_len = conf->extra_cred_len; 957 cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) && 958 conf->skip_cred_build; 959 if (conf->ssid.security_policy == SECURITY_STATIC_WEP) 960 cfg.static_wep_only = 1; 961 cfg.dualband = interface_count(hapd->iface) > 1; 962 if (cfg.dualband) 963 wpa_printf(MSG_DEBUG, "WPS: Dualband AP"); 964 965 wps->registrar = wps_registrar_init(wps, &cfg); 966 if (wps->registrar == NULL) { 967 wpa_printf(MSG_ERROR, "Failed to initialize WPS Registrar"); 968 os_free(wps->network_key); 969 os_free(wps); 970 return -1; 971 } 972 973 #ifdef CONFIG_WPS_UPNP 974 wps->friendly_name = hapd->conf->friendly_name; 975 wps->manufacturer_url = hapd->conf->manufacturer_url; 976 wps->model_description = hapd->conf->model_description; 977 wps->model_url = hapd->conf->model_url; 978 wps->upc = hapd->conf->upc; 979 #endif /* CONFIG_WPS_UPNP */ 980 981 hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd); 982 983 hapd->wps = wps; 984 985 return 0; 986 } 987 988 989 int hostapd_init_wps_complete(struct hostapd_data *hapd) 990 { 991 struct wps_context *wps = hapd->wps; 992 993 if (wps == NULL) 994 return 0; 995 996 #ifdef CONFIG_WPS_UPNP 997 if (hostapd_wps_upnp_init(hapd, wps) < 0) { 998 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP"); 999 wps_registrar_deinit(wps->registrar); 1000 os_free(wps->network_key); 1001 os_free(wps); 1002 hapd->wps = NULL; 1003 return -1; 1004 } 1005 #endif /* CONFIG_WPS_UPNP */ 1006 1007 return 0; 1008 } 1009 1010 1011 static void hostapd_wps_nfc_clear(struct wps_context *wps) 1012 { 1013 #ifdef CONFIG_WPS_NFC 1014 wps->ap_nfc_dev_pw_id = 0; 1015 wpabuf_free(wps->ap_nfc_dh_pubkey); 1016 wps->ap_nfc_dh_pubkey = NULL; 1017 wpabuf_free(wps->ap_nfc_dh_privkey); 1018 wps->ap_nfc_dh_privkey = NULL; 1019 wpabuf_free(wps->ap_nfc_dev_pw); 1020 wps->ap_nfc_dev_pw = NULL; 1021 #endif /* CONFIG_WPS_NFC */ 1022 } 1023 1024 1025 void hostapd_deinit_wps(struct hostapd_data *hapd) 1026 { 1027 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 1028 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1029 if (hapd->wps == NULL) 1030 return; 1031 #ifdef CONFIG_WPS_UPNP 1032 hostapd_wps_upnp_deinit(hapd); 1033 #endif /* CONFIG_WPS_UPNP */ 1034 wps_registrar_deinit(hapd->wps->registrar); 1035 os_free(hapd->wps->network_key); 1036 wps_device_data_free(&hapd->wps->dev); 1037 wpabuf_free(hapd->wps->dh_pubkey); 1038 wpabuf_free(hapd->wps->dh_privkey); 1039 wpabuf_free(hapd->wps->oob_conf.pubkey_hash); 1040 wpabuf_free(hapd->wps->oob_conf.dev_password); 1041 wps_free_pending_msgs(hapd->wps->upnp_msgs); 1042 hostapd_wps_nfc_clear(hapd->wps); 1043 os_free(hapd->wps); 1044 hapd->wps = NULL; 1045 hostapd_wps_clear_ies(hapd); 1046 } 1047 1048 1049 void hostapd_update_wps(struct hostapd_data *hapd) 1050 { 1051 if (hapd->wps == NULL) 1052 return; 1053 1054 #ifdef CONFIG_WPS_UPNP 1055 hapd->wps->friendly_name = hapd->conf->friendly_name; 1056 hapd->wps->manufacturer_url = hapd->conf->manufacturer_url; 1057 hapd->wps->model_description = hapd->conf->model_description; 1058 hapd->wps->model_url = hapd->conf->model_url; 1059 hapd->wps->upc = hapd->conf->upc; 1060 #endif /* CONFIG_WPS_UPNP */ 1061 1062 hostapd_wps_set_vendor_ext(hapd, hapd->wps); 1063 1064 if (hapd->conf->wps_state) 1065 wps_registrar_update_ie(hapd->wps->registrar); 1066 else 1067 hostapd_deinit_wps(hapd); 1068 } 1069 1070 1071 struct wps_add_pin_data { 1072 const u8 *addr; 1073 const u8 *uuid; 1074 const u8 *pin; 1075 size_t pin_len; 1076 int timeout; 1077 int added; 1078 }; 1079 1080 1081 static int wps_add_pin(struct hostapd_data *hapd, void *ctx) 1082 { 1083 struct wps_add_pin_data *data = ctx; 1084 int ret; 1085 1086 if (hapd->wps == NULL) 1087 return 0; 1088 ret = wps_registrar_add_pin(hapd->wps->registrar, data->addr, 1089 data->uuid, data->pin, data->pin_len, 1090 data->timeout); 1091 if (ret == 0) 1092 data->added++; 1093 return ret; 1094 } 1095 1096 1097 int hostapd_wps_add_pin(struct hostapd_data *hapd, const u8 *addr, 1098 const char *uuid, const char *pin, int timeout) 1099 { 1100 u8 u[UUID_LEN]; 1101 struct wps_add_pin_data data; 1102 1103 data.addr = addr; 1104 data.uuid = u; 1105 data.pin = (const u8 *) pin; 1106 data.pin_len = os_strlen(pin); 1107 data.timeout = timeout; 1108 data.added = 0; 1109 1110 if (os_strcmp(uuid, "any") == 0) 1111 data.uuid = NULL; 1112 else { 1113 if (uuid_str2bin(uuid, u)) 1114 return -1; 1115 data.uuid = u; 1116 } 1117 if (hostapd_wps_for_each(hapd, wps_add_pin, &data) < 0) 1118 return -1; 1119 return data.added ? 0 : -1; 1120 } 1121 1122 1123 static int wps_button_pushed(struct hostapd_data *hapd, void *ctx) 1124 { 1125 const u8 *p2p_dev_addr = ctx; 1126 if (hapd->wps == NULL) 1127 return 0; 1128 return wps_registrar_button_pushed(hapd->wps->registrar, p2p_dev_addr); 1129 } 1130 1131 1132 int hostapd_wps_button_pushed(struct hostapd_data *hapd, 1133 const u8 *p2p_dev_addr) 1134 { 1135 return hostapd_wps_for_each(hapd, wps_button_pushed, 1136 (void *) p2p_dev_addr); 1137 } 1138 1139 1140 static int wps_cancel(struct hostapd_data *hapd, void *ctx) 1141 { 1142 if (hapd->wps == NULL) 1143 return 0; 1144 1145 wps_registrar_wps_cancel(hapd->wps->registrar); 1146 ap_for_each_sta(hapd, ap_sta_wps_cancel, NULL); 1147 1148 return 0; 1149 } 1150 1151 1152 int hostapd_wps_cancel(struct hostapd_data *hapd) 1153 { 1154 return hostapd_wps_for_each(hapd, wps_cancel, NULL); 1155 } 1156 1157 1158 #ifdef CONFIG_WPS_OOB 1159 int hostapd_wps_start_oob(struct hostapd_data *hapd, char *device_type, 1160 char *path, char *method, char *name) 1161 { 1162 struct wps_context *wps = hapd->wps; 1163 struct oob_device_data *oob_dev; 1164 1165 oob_dev = wps_get_oob_device(device_type); 1166 if (oob_dev == NULL) 1167 return -1; 1168 oob_dev->device_path = path; 1169 oob_dev->device_name = name; 1170 wps->oob_conf.oob_method = wps_get_oob_method(method); 1171 1172 if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) { 1173 /* 1174 * Use pre-configured DH keys in order to be able to write the 1175 * key hash into the OOB file. 1176 */ 1177 wpabuf_free(wps->dh_pubkey); 1178 wpabuf_free(wps->dh_privkey); 1179 wps->dh_privkey = NULL; 1180 wps->dh_pubkey = dh_init(dh_groups_get(WPS_DH_GROUP), 1181 &wps->dh_privkey); 1182 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192); 1183 if (wps->dh_pubkey == NULL) { 1184 wpa_printf(MSG_ERROR, "WPS: Failed to initialize " 1185 "Diffie-Hellman handshake"); 1186 return -1; 1187 } 1188 } 1189 1190 if (wps_process_oob(wps, oob_dev, 1) < 0) 1191 goto error; 1192 1193 if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E || 1194 wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) && 1195 hostapd_wps_add_pin(hapd, NULL, "any", 1196 wpabuf_head(wps->oob_conf.dev_password), 0) < 1197 0) 1198 goto error; 1199 1200 return 0; 1201 1202 error: 1203 wpabuf_free(wps->dh_pubkey); 1204 wps->dh_pubkey = NULL; 1205 wpabuf_free(wps->dh_privkey); 1206 wps->dh_privkey = NULL; 1207 return -1; 1208 } 1209 #endif /* CONFIG_WPS_OOB */ 1210 1211 1212 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da, 1213 const u8 *bssid, 1214 const u8 *ie, size_t ie_len, 1215 int ssi_signal) 1216 { 1217 struct hostapd_data *hapd = ctx; 1218 struct wpabuf *wps_ie; 1219 struct ieee802_11_elems elems; 1220 1221 if (hapd->wps == NULL) 1222 return 0; 1223 1224 if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) { 1225 wpa_printf(MSG_DEBUG, "WPS: Could not parse ProbeReq from " 1226 MACSTR, MAC2STR(addr)); 1227 return 0; 1228 } 1229 1230 if (elems.ssid && elems.ssid_len > 0 && 1231 (elems.ssid_len != hapd->conf->ssid.ssid_len || 1232 os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) != 1233 0)) 1234 return 0; /* Not for us */ 1235 1236 wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA); 1237 if (wps_ie == NULL) 1238 return 0; 1239 if (wps_validate_probe_req(wps_ie, addr) < 0) { 1240 wpabuf_free(wps_ie); 1241 return 0; 1242 } 1243 1244 if (wpabuf_len(wps_ie) > 0) { 1245 int p2p_wildcard = 0; 1246 #ifdef CONFIG_P2P 1247 if (elems.ssid && elems.ssid_len == P2P_WILDCARD_SSID_LEN && 1248 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, 1249 P2P_WILDCARD_SSID_LEN) == 0) 1250 p2p_wildcard = 1; 1251 #endif /* CONFIG_P2P */ 1252 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie, 1253 p2p_wildcard); 1254 #ifdef CONFIG_WPS_UPNP 1255 /* FIX: what exactly should be included in the WLANEvent? 1256 * WPS attributes? Full ProbeReq frame? */ 1257 if (!p2p_wildcard) 1258 upnp_wps_device_send_wlan_event( 1259 hapd->wps_upnp, addr, 1260 UPNP_WPS_WLANEVENT_TYPE_PROBE, wps_ie); 1261 #endif /* CONFIG_WPS_UPNP */ 1262 } 1263 1264 wpabuf_free(wps_ie); 1265 1266 return 0; 1267 } 1268 1269 1270 #ifdef CONFIG_WPS_UPNP 1271 1272 static int hostapd_rx_req_put_wlan_response( 1273 void *priv, enum upnp_wps_wlanevent_type ev_type, 1274 const u8 *mac_addr, const struct wpabuf *msg, 1275 enum wps_msg_type msg_type) 1276 { 1277 struct hostapd_data *hapd = priv; 1278 struct sta_info *sta; 1279 struct upnp_pending_message *p; 1280 1281 wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr=" 1282 MACSTR, ev_type, MAC2STR(mac_addr)); 1283 wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage", 1284 wpabuf_head(msg), wpabuf_len(msg)); 1285 if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) { 1286 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected " 1287 "PutWLANResponse WLANEventType %d", ev_type); 1288 return -1; 1289 } 1290 1291 /* 1292 * EAP response to ongoing to WPS Registration. Send it to EAP-WSC 1293 * server implementation for delivery to the peer. 1294 */ 1295 1296 sta = ap_get_sta(hapd, mac_addr); 1297 #ifndef CONFIG_WPS_STRICT 1298 if (!sta) { 1299 /* 1300 * Workaround - Intel wsccmd uses bogus NewWLANEventMAC: 1301 * Pick STA that is in an ongoing WPS registration without 1302 * checking the MAC address. 1303 */ 1304 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based " 1305 "on NewWLANEventMAC; try wildcard match"); 1306 for (sta = hapd->sta_list; sta; sta = sta->next) { 1307 if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS)) 1308 break; 1309 } 1310 } 1311 #endif /* CONFIG_WPS_STRICT */ 1312 1313 if (!sta || !(sta->flags & WLAN_STA_WPS)) { 1314 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found"); 1315 return 0; 1316 } 1317 1318 p = os_zalloc(sizeof(*p)); 1319 if (p == NULL) 1320 return -1; 1321 os_memcpy(p->addr, sta->addr, ETH_ALEN); 1322 p->msg = wpabuf_dup(msg); 1323 p->type = msg_type; 1324 p->next = hapd->wps->upnp_msgs; 1325 hapd->wps->upnp_msgs = p; 1326 1327 return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap); 1328 } 1329 1330 1331 static int hostapd_wps_upnp_init(struct hostapd_data *hapd, 1332 struct wps_context *wps) 1333 { 1334 struct upnp_wps_device_ctx *ctx; 1335 1336 if (!hapd->conf->upnp_iface) 1337 return 0; 1338 ctx = os_zalloc(sizeof(*ctx)); 1339 if (ctx == NULL) 1340 return -1; 1341 1342 ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response; 1343 if (hapd->conf->ap_pin) 1344 ctx->ap_pin = os_strdup(hapd->conf->ap_pin); 1345 1346 hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd, 1347 hapd->conf->upnp_iface); 1348 if (hapd->wps_upnp == NULL) 1349 return -1; 1350 wps->wps_upnp = hapd->wps_upnp; 1351 1352 return 0; 1353 } 1354 1355 1356 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd) 1357 { 1358 upnp_wps_device_deinit(hapd->wps_upnp, hapd); 1359 } 1360 1361 #endif /* CONFIG_WPS_UPNP */ 1362 1363 1364 int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr, 1365 char *buf, size_t buflen) 1366 { 1367 if (hapd->wps == NULL) 1368 return 0; 1369 return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen); 1370 } 1371 1372 1373 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx) 1374 { 1375 struct hostapd_data *hapd = eloop_data; 1376 wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out"); 1377 hostapd_wps_ap_pin_disable(hapd); 1378 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_PIN_DISABLED); 1379 } 1380 1381 1382 static void hostapd_wps_ap_pin_enable(struct hostapd_data *hapd, int timeout) 1383 { 1384 wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout); 1385 hapd->ap_pin_failures = 0; 1386 hapd->ap_pin_failures_consecutive = 0; 1387 hapd->conf->ap_setup_locked = 0; 1388 if (hapd->wps->ap_setup_locked) { 1389 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED); 1390 hapd->wps->ap_setup_locked = 0; 1391 wps_registrar_update_ie(hapd->wps->registrar); 1392 } 1393 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1394 if (timeout > 0) 1395 eloop_register_timeout(timeout, 0, 1396 hostapd_wps_ap_pin_timeout, hapd, NULL); 1397 } 1398 1399 1400 static int wps_ap_pin_disable(struct hostapd_data *hapd, void *ctx) 1401 { 1402 os_free(hapd->conf->ap_pin); 1403 hapd->conf->ap_pin = NULL; 1404 #ifdef CONFIG_WPS_UPNP 1405 upnp_wps_set_ap_pin(hapd->wps_upnp, NULL); 1406 #endif /* CONFIG_WPS_UPNP */ 1407 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1408 return 0; 1409 } 1410 1411 1412 void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd) 1413 { 1414 wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN"); 1415 hostapd_wps_for_each(hapd, wps_ap_pin_disable, NULL); 1416 } 1417 1418 1419 struct wps_ap_pin_data { 1420 char pin_txt[9]; 1421 int timeout; 1422 }; 1423 1424 1425 static int wps_ap_pin_set(struct hostapd_data *hapd, void *ctx) 1426 { 1427 struct wps_ap_pin_data *data = ctx; 1428 os_free(hapd->conf->ap_pin); 1429 hapd->conf->ap_pin = os_strdup(data->pin_txt); 1430 #ifdef CONFIG_WPS_UPNP 1431 upnp_wps_set_ap_pin(hapd->wps_upnp, data->pin_txt); 1432 #endif /* CONFIG_WPS_UPNP */ 1433 hostapd_wps_ap_pin_enable(hapd, data->timeout); 1434 return 0; 1435 } 1436 1437 1438 const char * hostapd_wps_ap_pin_random(struct hostapd_data *hapd, int timeout) 1439 { 1440 unsigned int pin; 1441 struct wps_ap_pin_data data; 1442 1443 pin = wps_generate_pin(); 1444 os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%08u", pin); 1445 data.timeout = timeout; 1446 hostapd_wps_for_each(hapd, wps_ap_pin_set, &data); 1447 return hapd->conf->ap_pin; 1448 } 1449 1450 1451 const char * hostapd_wps_ap_pin_get(struct hostapd_data *hapd) 1452 { 1453 return hapd->conf->ap_pin; 1454 } 1455 1456 1457 int hostapd_wps_ap_pin_set(struct hostapd_data *hapd, const char *pin, 1458 int timeout) 1459 { 1460 struct wps_ap_pin_data data; 1461 int ret; 1462 1463 ret = os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%s", pin); 1464 if (ret < 0 || ret >= (int) sizeof(data.pin_txt)) 1465 return -1; 1466 data.timeout = timeout; 1467 return hostapd_wps_for_each(hapd, wps_ap_pin_set, &data); 1468 } 1469 1470 1471 static int wps_update_ie(struct hostapd_data *hapd, void *ctx) 1472 { 1473 if (hapd->wps) 1474 wps_registrar_update_ie(hapd->wps->registrar); 1475 return 0; 1476 } 1477 1478 1479 void hostapd_wps_update_ie(struct hostapd_data *hapd) 1480 { 1481 hostapd_wps_for_each(hapd, wps_update_ie, NULL); 1482 } 1483 1484 1485 int hostapd_wps_config_ap(struct hostapd_data *hapd, const char *ssid, 1486 const char *auth, const char *encr, const char *key) 1487 { 1488 struct wps_credential cred; 1489 size_t len; 1490 1491 os_memset(&cred, 0, sizeof(cred)); 1492 1493 len = os_strlen(ssid); 1494 if ((len & 1) || len > 2 * sizeof(cred.ssid) || 1495 hexstr2bin(ssid, cred.ssid, len / 2)) 1496 return -1; 1497 cred.ssid_len = len / 2; 1498 1499 if (os_strncmp(auth, "OPEN", 4) == 0) 1500 cred.auth_type = WPS_AUTH_OPEN; 1501 else if (os_strncmp(auth, "WPAPSK", 6) == 0) 1502 cred.auth_type = WPS_AUTH_WPAPSK; 1503 else if (os_strncmp(auth, "WPA2PSK", 7) == 0) 1504 cred.auth_type = WPS_AUTH_WPA2PSK; 1505 else 1506 return -1; 1507 1508 if (encr) { 1509 if (os_strncmp(encr, "NONE", 4) == 0) 1510 cred.encr_type = WPS_ENCR_NONE; 1511 else if (os_strncmp(encr, "WEP", 3) == 0) 1512 cred.encr_type = WPS_ENCR_WEP; 1513 else if (os_strncmp(encr, "TKIP", 4) == 0) 1514 cred.encr_type = WPS_ENCR_TKIP; 1515 else if (os_strncmp(encr, "CCMP", 4) == 0) 1516 cred.encr_type = WPS_ENCR_AES; 1517 else 1518 return -1; 1519 } else 1520 cred.encr_type = WPS_ENCR_NONE; 1521 1522 if (key) { 1523 len = os_strlen(key); 1524 if ((len & 1) || len > 2 * sizeof(cred.key) || 1525 hexstr2bin(key, cred.key, len / 2)) 1526 return -1; 1527 cred.key_len = len / 2; 1528 } 1529 1530 return wps_registrar_config_ap(hapd->wps->registrar, &cred); 1531 } 1532 1533 1534 #ifdef CONFIG_WPS_NFC 1535 1536 struct wps_nfc_password_token_data { 1537 const u8 *oob_dev_pw; 1538 size_t oob_dev_pw_len; 1539 int added; 1540 }; 1541 1542 1543 static int wps_add_nfc_password_token(struct hostapd_data *hapd, void *ctx) 1544 { 1545 struct wps_nfc_password_token_data *data = ctx; 1546 int ret; 1547 1548 if (hapd->wps == NULL) 1549 return 0; 1550 ret = wps_registrar_add_nfc_password_token(hapd->wps->registrar, 1551 data->oob_dev_pw, 1552 data->oob_dev_pw_len); 1553 if (ret == 0) 1554 data->added++; 1555 return ret; 1556 } 1557 1558 1559 static int hostapd_wps_add_nfc_password_token(struct hostapd_data *hapd, 1560 struct wps_parse_attr *attr) 1561 { 1562 struct wps_nfc_password_token_data data; 1563 1564 data.oob_dev_pw = attr->oob_dev_password; 1565 data.oob_dev_pw_len = attr->oob_dev_password_len; 1566 data.added = 0; 1567 if (hostapd_wps_for_each(hapd, wps_add_nfc_password_token, &data) < 0) 1568 return -1; 1569 return data.added ? 0 : -1; 1570 } 1571 1572 1573 static int hostapd_wps_nfc_tag_process(struct hostapd_data *hapd, 1574 const struct wpabuf *wps) 1575 { 1576 struct wps_parse_attr attr; 1577 1578 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps); 1579 1580 if (wps_parse_msg(wps, &attr)) { 1581 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag"); 1582 return -1; 1583 } 1584 1585 if (attr.oob_dev_password) 1586 return hostapd_wps_add_nfc_password_token(hapd, &attr); 1587 1588 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag"); 1589 return -1; 1590 } 1591 1592 1593 int hostapd_wps_nfc_tag_read(struct hostapd_data *hapd, 1594 const struct wpabuf *data) 1595 { 1596 const struct wpabuf *wps = data; 1597 struct wpabuf *tmp = NULL; 1598 int ret; 1599 1600 if (wpabuf_len(data) < 4) 1601 return -1; 1602 1603 if (*wpabuf_head_u8(data) != 0x10) { 1604 /* Assume this contains full NDEF record */ 1605 tmp = ndef_parse_wifi(data); 1606 if (tmp == NULL) { 1607 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF"); 1608 return -1; 1609 } 1610 wps = tmp; 1611 } 1612 1613 ret = hostapd_wps_nfc_tag_process(hapd, wps); 1614 wpabuf_free(tmp); 1615 return ret; 1616 } 1617 1618 1619 struct wpabuf * hostapd_wps_nfc_config_token(struct hostapd_data *hapd, 1620 int ndef) 1621 { 1622 struct wpabuf *ret; 1623 1624 if (hapd->wps == NULL) 1625 return NULL; 1626 1627 ret = wps_get_oob_cred(hapd->wps); 1628 if (ndef && ret) { 1629 struct wpabuf *tmp; 1630 tmp = ndef_build_wifi(ret); 1631 wpabuf_free(ret); 1632 if (tmp == NULL) 1633 return NULL; 1634 ret = tmp; 1635 } 1636 1637 return ret; 1638 } 1639 1640 1641 struct wpabuf * hostapd_wps_nfc_token_gen(struct hostapd_data *hapd, int ndef) 1642 { 1643 return wps_nfc_token_gen(ndef, &hapd->conf->wps_nfc_dev_pw_id, 1644 &hapd->conf->wps_nfc_dh_pubkey, 1645 &hapd->conf->wps_nfc_dh_privkey, 1646 &hapd->conf->wps_nfc_dev_pw); 1647 } 1648 1649 1650 int hostapd_wps_nfc_token_enable(struct hostapd_data *hapd) 1651 { 1652 struct wps_context *wps = hapd->wps; 1653 1654 if (wps == NULL) 1655 return -1; 1656 1657 if (!hapd->conf->wps_nfc_dh_pubkey || 1658 !hapd->conf->wps_nfc_dh_privkey || 1659 !hapd->conf->wps_nfc_dev_pw || 1660 !hapd->conf->wps_nfc_dev_pw_id) 1661 return -1; 1662 1663 hostapd_wps_nfc_clear(wps); 1664 wps->ap_nfc_dev_pw_id = hapd->conf->wps_nfc_dev_pw_id; 1665 wps->ap_nfc_dh_pubkey = wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey); 1666 wps->ap_nfc_dh_privkey = wpabuf_dup(hapd->conf->wps_nfc_dh_privkey); 1667 wps->ap_nfc_dev_pw = wpabuf_dup(hapd->conf->wps_nfc_dev_pw); 1668 1669 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey || 1670 !wps->ap_nfc_dev_pw) { 1671 hostapd_wps_nfc_clear(wps); 1672 return -1; 1673 } 1674 1675 return 0; 1676 } 1677 1678 1679 void hostapd_wps_nfc_token_disable(struct hostapd_data *hapd) 1680 { 1681 hostapd_wps_nfc_clear(hapd->wps); 1682 } 1683 1684 #endif /* CONFIG_WPS_NFC */ 1685
