1 /* 2 * hostapd / Configuration helper functions 3 * Copyright (c) 2003-2014, Jouni Malinen <j@w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "utils/includes.h" 10 11 #include "utils/common.h" 12 #include "crypto/sha1.h" 13 #include "radius/radius_client.h" 14 #include "common/ieee802_11_defs.h" 15 #include "common/eapol_common.h" 16 #include "eap_common/eap_wsc_common.h" 17 #include "eap_server/eap.h" 18 #include "wpa_auth.h" 19 #include "sta_info.h" 20 #include "ap_config.h" 21 22 23 static void hostapd_config_free_vlan(struct hostapd_bss_config *bss) 24 { 25 struct hostapd_vlan *vlan, *prev; 26 27 vlan = bss->vlan; 28 prev = NULL; 29 while (vlan) { 30 prev = vlan; 31 vlan = vlan->next; 32 os_free(prev); 33 } 34 35 bss->vlan = NULL; 36 } 37 38 39 void hostapd_config_defaults_bss(struct hostapd_bss_config *bss) 40 { 41 bss->logger_syslog_level = HOSTAPD_LEVEL_INFO; 42 bss->logger_stdout_level = HOSTAPD_LEVEL_INFO; 43 bss->logger_syslog = (unsigned int) -1; 44 bss->logger_stdout = (unsigned int) -1; 45 46 bss->auth_algs = WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED; 47 48 bss->wep_rekeying_period = 300; 49 /* use key0 in individual key and key1 in broadcast key */ 50 bss->broadcast_key_idx_min = 1; 51 bss->broadcast_key_idx_max = 2; 52 bss->eap_reauth_period = 3600; 53 54 bss->wpa_group_rekey = 600; 55 bss->wpa_gmk_rekey = 86400; 56 bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK; 57 bss->wpa_pairwise = WPA_CIPHER_TKIP; 58 bss->wpa_group = WPA_CIPHER_TKIP; 59 bss->rsn_pairwise = 0; 60 61 bss->max_num_sta = MAX_STA_COUNT; 62 63 bss->dtim_period = 2; 64 65 bss->radius_server_auth_port = 1812; 66 bss->ap_max_inactivity = AP_MAX_INACTIVITY; 67 bss->eapol_version = EAPOL_VERSION; 68 69 bss->max_listen_interval = 65535; 70 71 bss->pwd_group = 19; /* ECC: GF(p=256) */ 72 73 #ifdef CONFIG_IEEE80211W 74 bss->assoc_sa_query_max_timeout = 1000; 75 bss->assoc_sa_query_retry_timeout = 201; 76 #endif /* CONFIG_IEEE80211W */ 77 #ifdef EAP_SERVER_FAST 78 /* both anonymous and authenticated provisioning */ 79 bss->eap_fast_prov = 3; 80 bss->pac_key_lifetime = 7 * 24 * 60 * 60; 81 bss->pac_key_refresh_time = 1 * 24 * 60 * 60; 82 #endif /* EAP_SERVER_FAST */ 83 84 /* Set to -1 as defaults depends on HT in setup */ 85 bss->wmm_enabled = -1; 86 87 #ifdef CONFIG_IEEE80211R 88 bss->ft_over_ds = 1; 89 #endif /* CONFIG_IEEE80211R */ 90 91 bss->radius_das_time_window = 300; 92 93 bss->sae_anti_clogging_threshold = 5; 94 } 95 96 97 struct hostapd_config * hostapd_config_defaults(void) 98 { 99 #define ecw2cw(ecw) ((1 << (ecw)) - 1) 100 101 struct hostapd_config *conf; 102 struct hostapd_bss_config *bss; 103 const int aCWmin = 4, aCWmax = 10; 104 const struct hostapd_wmm_ac_params ac_bk = 105 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */ 106 const struct hostapd_wmm_ac_params ac_be = 107 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */ 108 const struct hostapd_wmm_ac_params ac_vi = /* video traffic */ 109 { aCWmin - 1, aCWmin, 2, 3000 / 32, 0 }; 110 const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */ 111 { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 }; 112 const struct hostapd_tx_queue_params txq_bk = 113 { 7, ecw2cw(aCWmin), ecw2cw(aCWmax), 0 }; 114 const struct hostapd_tx_queue_params txq_be = 115 { 3, ecw2cw(aCWmin), 4 * (ecw2cw(aCWmin) + 1) - 1, 0}; 116 const struct hostapd_tx_queue_params txq_vi = 117 { 1, (ecw2cw(aCWmin) + 1) / 2 - 1, ecw2cw(aCWmin), 30}; 118 const struct hostapd_tx_queue_params txq_vo = 119 { 1, (ecw2cw(aCWmin) + 1) / 4 - 1, 120 (ecw2cw(aCWmin) + 1) / 2 - 1, 15}; 121 122 #undef ecw2cw 123 124 conf = os_zalloc(sizeof(*conf)); 125 bss = os_zalloc(sizeof(*bss)); 126 if (conf == NULL || bss == NULL) { 127 wpa_printf(MSG_ERROR, "Failed to allocate memory for " 128 "configuration data."); 129 os_free(conf); 130 os_free(bss); 131 return NULL; 132 } 133 conf->bss = os_calloc(1, sizeof(struct hostapd_bss_config *)); 134 if (conf->bss == NULL) { 135 os_free(conf); 136 os_free(bss); 137 return NULL; 138 } 139 conf->bss[0] = bss; 140 141 bss->radius = os_zalloc(sizeof(*bss->radius)); 142 if (bss->radius == NULL) { 143 os_free(conf->bss); 144 os_free(conf); 145 os_free(bss); 146 return NULL; 147 } 148 149 hostapd_config_defaults_bss(bss); 150 151 conf->num_bss = 1; 152 153 conf->beacon_int = 100; 154 conf->rts_threshold = -1; /* use driver default: 2347 */ 155 conf->fragm_threshold = -1; /* user driver default: 2346 */ 156 conf->send_probe_response = 1; 157 158 conf->wmm_ac_params[0] = ac_be; 159 conf->wmm_ac_params[1] = ac_bk; 160 conf->wmm_ac_params[2] = ac_vi; 161 conf->wmm_ac_params[3] = ac_vo; 162 163 conf->tx_queue[0] = txq_vo; 164 conf->tx_queue[1] = txq_vi; 165 conf->tx_queue[2] = txq_be; 166 conf->tx_queue[3] = txq_bk; 167 168 conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED; 169 170 conf->ap_table_max_size = 255; 171 conf->ap_table_expiration_time = 60; 172 173 #ifdef CONFIG_TESTING_OPTIONS 174 conf->ignore_probe_probability = 0.0d; 175 conf->ignore_auth_probability = 0.0d; 176 conf->ignore_assoc_probability = 0.0d; 177 conf->ignore_reassoc_probability = 0.0d; 178 conf->corrupt_gtk_rekey_mic_probability = 0.0d; 179 #endif /* CONFIG_TESTING_OPTIONS */ 180 181 #ifdef CONFIG_ACS 182 conf->acs_num_scans = 5; 183 #endif /* CONFIG_ACS */ 184 185 return conf; 186 } 187 188 189 int hostapd_mac_comp(const void *a, const void *b) 190 { 191 return os_memcmp(a, b, sizeof(macaddr)); 192 } 193 194 195 int hostapd_mac_comp_empty(const void *a) 196 { 197 macaddr empty = { 0 }; 198 return os_memcmp(a, empty, sizeof(macaddr)); 199 } 200 201 202 static int hostapd_config_read_wpa_psk(const char *fname, 203 struct hostapd_ssid *ssid) 204 { 205 FILE *f; 206 char buf[128], *pos; 207 int line = 0, ret = 0, len, ok; 208 u8 addr[ETH_ALEN]; 209 struct hostapd_wpa_psk *psk; 210 211 if (!fname) 212 return 0; 213 214 f = fopen(fname, "r"); 215 if (!f) { 216 wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname); 217 return -1; 218 } 219 220 while (fgets(buf, sizeof(buf), f)) { 221 line++; 222 223 if (buf[0] == '#') 224 continue; 225 pos = buf; 226 while (*pos != '\0') { 227 if (*pos == '\n') { 228 *pos = '\0'; 229 break; 230 } 231 pos++; 232 } 233 if (buf[0] == '\0') 234 continue; 235 236 if (hwaddr_aton(buf, addr)) { 237 wpa_printf(MSG_ERROR, "Invalid MAC address '%s' on " 238 "line %d in '%s'", buf, line, fname); 239 ret = -1; 240 break; 241 } 242 243 psk = os_zalloc(sizeof(*psk)); 244 if (psk == NULL) { 245 wpa_printf(MSG_ERROR, "WPA PSK allocation failed"); 246 ret = -1; 247 break; 248 } 249 if (is_zero_ether_addr(addr)) 250 psk->group = 1; 251 else 252 os_memcpy(psk->addr, addr, ETH_ALEN); 253 254 pos = buf + 17; 255 if (*pos == '\0') { 256 wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'", 257 line, fname); 258 os_free(psk); 259 ret = -1; 260 break; 261 } 262 pos++; 263 264 ok = 0; 265 len = os_strlen(pos); 266 if (len == 64 && hexstr2bin(pos, psk->psk, PMK_LEN) == 0) 267 ok = 1; 268 else if (len >= 8 && len < 64) { 269 pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len, 270 4096, psk->psk, PMK_LEN); 271 ok = 1; 272 } 273 if (!ok) { 274 wpa_printf(MSG_ERROR, "Invalid PSK '%s' on line %d in " 275 "'%s'", pos, line, fname); 276 os_free(psk); 277 ret = -1; 278 break; 279 } 280 281 psk->next = ssid->wpa_psk; 282 ssid->wpa_psk = psk; 283 } 284 285 fclose(f); 286 287 return ret; 288 } 289 290 291 static int hostapd_derive_psk(struct hostapd_ssid *ssid) 292 { 293 ssid->wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk)); 294 if (ssid->wpa_psk == NULL) { 295 wpa_printf(MSG_ERROR, "Unable to alloc space for PSK"); 296 return -1; 297 } 298 wpa_hexdump_ascii(MSG_DEBUG, "SSID", 299 (u8 *) ssid->ssid, ssid->ssid_len); 300 wpa_hexdump_ascii_key(MSG_DEBUG, "PSK (ASCII passphrase)", 301 (u8 *) ssid->wpa_passphrase, 302 os_strlen(ssid->wpa_passphrase)); 303 pbkdf2_sha1(ssid->wpa_passphrase, 304 ssid->ssid, ssid->ssid_len, 305 4096, ssid->wpa_psk->psk, PMK_LEN); 306 wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)", 307 ssid->wpa_psk->psk, PMK_LEN); 308 return 0; 309 } 310 311 312 int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf) 313 { 314 struct hostapd_ssid *ssid = &conf->ssid; 315 316 if (ssid->wpa_passphrase != NULL) { 317 if (ssid->wpa_psk != NULL) { 318 wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK " 319 "instead of passphrase"); 320 } else { 321 wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on " 322 "passphrase"); 323 if (hostapd_derive_psk(ssid) < 0) 324 return -1; 325 } 326 ssid->wpa_psk->group = 1; 327 } 328 329 if (ssid->wpa_psk_file) { 330 if (hostapd_config_read_wpa_psk(ssid->wpa_psk_file, 331 &conf->ssid)) 332 return -1; 333 } 334 335 return 0; 336 } 337 338 339 int hostapd_wep_key_cmp(struct hostapd_wep_keys *a, struct hostapd_wep_keys *b) 340 { 341 int i; 342 343 if (a->idx != b->idx || a->default_len != b->default_len) 344 return 1; 345 for (i = 0; i < NUM_WEP_KEYS; i++) 346 if (a->len[i] != b->len[i] || 347 os_memcmp(a->key[i], b->key[i], a->len[i]) != 0) 348 return 1; 349 return 0; 350 } 351 352 353 static void hostapd_config_free_radius(struct hostapd_radius_server *servers, 354 int num_servers) 355 { 356 int i; 357 358 for (i = 0; i < num_servers; i++) { 359 os_free(servers[i].shared_secret); 360 } 361 os_free(servers); 362 } 363 364 365 struct hostapd_radius_attr * 366 hostapd_config_get_radius_attr(struct hostapd_radius_attr *attr, u8 type) 367 { 368 for (; attr; attr = attr->next) { 369 if (attr->type == type) 370 return attr; 371 } 372 return NULL; 373 } 374 375 376 static void hostapd_config_free_radius_attr(struct hostapd_radius_attr *attr) 377 { 378 struct hostapd_radius_attr *prev; 379 380 while (attr) { 381 prev = attr; 382 attr = attr->next; 383 wpabuf_free(prev->val); 384 os_free(prev); 385 } 386 } 387 388 389 static void hostapd_config_free_eap_user(struct hostapd_eap_user *user) 390 { 391 os_free(user->identity); 392 os_free(user->password); 393 os_free(user); 394 } 395 396 397 static void hostapd_config_free_wep(struct hostapd_wep_keys *keys) 398 { 399 int i; 400 for (i = 0; i < NUM_WEP_KEYS; i++) { 401 os_free(keys->key[i]); 402 keys->key[i] = NULL; 403 } 404 } 405 406 407 void hostapd_config_free_bss(struct hostapd_bss_config *conf) 408 { 409 struct hostapd_wpa_psk *psk, *prev; 410 struct hostapd_eap_user *user, *prev_user; 411 412 if (conf == NULL) 413 return; 414 415 psk = conf->ssid.wpa_psk; 416 while (psk) { 417 prev = psk; 418 psk = psk->next; 419 os_free(prev); 420 } 421 422 os_free(conf->ssid.wpa_passphrase); 423 os_free(conf->ssid.wpa_psk_file); 424 hostapd_config_free_wep(&conf->ssid.wep); 425 #ifdef CONFIG_FULL_DYNAMIC_VLAN 426 os_free(conf->ssid.vlan_tagged_interface); 427 #endif /* CONFIG_FULL_DYNAMIC_VLAN */ 428 429 user = conf->eap_user; 430 while (user) { 431 prev_user = user; 432 user = user->next; 433 hostapd_config_free_eap_user(prev_user); 434 } 435 os_free(conf->eap_user_sqlite); 436 437 os_free(conf->eap_req_id_text); 438 os_free(conf->accept_mac); 439 os_free(conf->deny_mac); 440 os_free(conf->nas_identifier); 441 if (conf->radius) { 442 hostapd_config_free_radius(conf->radius->auth_servers, 443 conf->radius->num_auth_servers); 444 hostapd_config_free_radius(conf->radius->acct_servers, 445 conf->radius->num_acct_servers); 446 } 447 hostapd_config_free_radius_attr(conf->radius_auth_req_attr); 448 hostapd_config_free_radius_attr(conf->radius_acct_req_attr); 449 os_free(conf->rsn_preauth_interfaces); 450 os_free(conf->ctrl_interface); 451 os_free(conf->ca_cert); 452 os_free(conf->server_cert); 453 os_free(conf->private_key); 454 os_free(conf->private_key_passwd); 455 os_free(conf->ocsp_stapling_response); 456 os_free(conf->dh_file); 457 os_free(conf->pac_opaque_encr_key); 458 os_free(conf->eap_fast_a_id); 459 os_free(conf->eap_fast_a_id_info); 460 os_free(conf->eap_sim_db); 461 os_free(conf->radius_server_clients); 462 os_free(conf->test_socket); 463 os_free(conf->radius); 464 os_free(conf->radius_das_shared_secret); 465 hostapd_config_free_vlan(conf); 466 os_free(conf->time_zone); 467 468 #ifdef CONFIG_IEEE80211R 469 { 470 struct ft_remote_r0kh *r0kh, *r0kh_prev; 471 struct ft_remote_r1kh *r1kh, *r1kh_prev; 472 473 r0kh = conf->r0kh_list; 474 conf->r0kh_list = NULL; 475 while (r0kh) { 476 r0kh_prev = r0kh; 477 r0kh = r0kh->next; 478 os_free(r0kh_prev); 479 } 480 481 r1kh = conf->r1kh_list; 482 conf->r1kh_list = NULL; 483 while (r1kh) { 484 r1kh_prev = r1kh; 485 r1kh = r1kh->next; 486 os_free(r1kh_prev); 487 } 488 } 489 #endif /* CONFIG_IEEE80211R */ 490 491 #ifdef CONFIG_WPS 492 os_free(conf->wps_pin_requests); 493 os_free(conf->device_name); 494 os_free(conf->manufacturer); 495 os_free(conf->model_name); 496 os_free(conf->model_number); 497 os_free(conf->serial_number); 498 os_free(conf->config_methods); 499 os_free(conf->ap_pin); 500 os_free(conf->extra_cred); 501 os_free(conf->ap_settings); 502 os_free(conf->upnp_iface); 503 os_free(conf->friendly_name); 504 os_free(conf->manufacturer_url); 505 os_free(conf->model_description); 506 os_free(conf->model_url); 507 os_free(conf->upc); 508 wpabuf_free(conf->wps_nfc_dh_pubkey); 509 wpabuf_free(conf->wps_nfc_dh_privkey); 510 wpabuf_free(conf->wps_nfc_dev_pw); 511 #endif /* CONFIG_WPS */ 512 513 os_free(conf->roaming_consortium); 514 os_free(conf->venue_name); 515 os_free(conf->nai_realm_data); 516 os_free(conf->network_auth_type); 517 os_free(conf->anqp_3gpp_cell_net); 518 os_free(conf->domain_name); 519 520 #ifdef CONFIG_RADIUS_TEST 521 os_free(conf->dump_msk_file); 522 #endif /* CONFIG_RADIUS_TEST */ 523 524 #ifdef CONFIG_HS20 525 os_free(conf->hs20_oper_friendly_name); 526 os_free(conf->hs20_wan_metrics); 527 os_free(conf->hs20_connection_capability); 528 os_free(conf->hs20_operating_class); 529 #endif /* CONFIG_HS20 */ 530 531 wpabuf_free(conf->vendor_elements); 532 533 os_free(conf->sae_groups); 534 535 os_free(conf->server_id); 536 537 os_free(conf); 538 } 539 540 541 /** 542 * hostapd_config_free - Free hostapd configuration 543 * @conf: Configuration data from hostapd_config_read(). 544 */ 545 void hostapd_config_free(struct hostapd_config *conf) 546 { 547 size_t i; 548 549 if (conf == NULL) 550 return; 551 552 for (i = 0; i < conf->num_bss; i++) 553 hostapd_config_free_bss(conf->bss[i]); 554 os_free(conf->bss); 555 os_free(conf->supported_rates); 556 os_free(conf->basic_rates); 557 558 os_free(conf); 559 } 560 561 562 /** 563 * hostapd_maclist_found - Find a MAC address from a list 564 * @list: MAC address list 565 * @num_entries: Number of addresses in the list 566 * @addr: Address to search for 567 * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed 568 * Returns: 1 if address is in the list or 0 if not. 569 * 570 * Perform a binary search for given MAC address from a pre-sorted list. 571 */ 572 int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries, 573 const u8 *addr, int *vlan_id) 574 { 575 int start, end, middle, res; 576 577 start = 0; 578 end = num_entries - 1; 579 580 while (start <= end) { 581 middle = (start + end) / 2; 582 res = os_memcmp(list[middle].addr, addr, ETH_ALEN); 583 if (res == 0) { 584 if (vlan_id) 585 *vlan_id = list[middle].vlan_id; 586 return 1; 587 } 588 if (res < 0) 589 start = middle + 1; 590 else 591 end = middle - 1; 592 } 593 594 return 0; 595 } 596 597 598 int hostapd_rate_found(int *list, int rate) 599 { 600 int i; 601 602 if (list == NULL) 603 return 0; 604 605 for (i = 0; list[i] >= 0; i++) 606 if (list[i] == rate) 607 return 1; 608 609 return 0; 610 } 611 612 613 int hostapd_vlan_id_valid(struct hostapd_vlan *vlan, int vlan_id) 614 { 615 struct hostapd_vlan *v = vlan; 616 while (v) { 617 if (v->vlan_id == vlan_id || v->vlan_id == VLAN_ID_WILDCARD) 618 return 1; 619 v = v->next; 620 } 621 return 0; 622 } 623 624 625 const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id) 626 { 627 struct hostapd_vlan *v = vlan; 628 while (v) { 629 if (v->vlan_id == vlan_id) 630 return v->ifname; 631 v = v->next; 632 } 633 return NULL; 634 } 635 636 637 const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf, 638 const u8 *addr, const u8 *p2p_dev_addr, 639 const u8 *prev_psk) 640 { 641 struct hostapd_wpa_psk *psk; 642 int next_ok = prev_psk == NULL; 643 644 if (p2p_dev_addr) { 645 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR 646 " p2p_dev_addr=" MACSTR " prev_psk=%p", 647 MAC2STR(addr), MAC2STR(p2p_dev_addr), prev_psk); 648 if (!is_zero_ether_addr(p2p_dev_addr)) 649 addr = NULL; /* Use P2P Device Address for matching */ 650 } else { 651 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR 652 " prev_psk=%p", 653 MAC2STR(addr), prev_psk); 654 } 655 656 for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) { 657 if (next_ok && 658 (psk->group || 659 (addr && os_memcmp(psk->addr, addr, ETH_ALEN) == 0) || 660 (!addr && p2p_dev_addr && 661 os_memcmp(psk->p2p_dev_addr, p2p_dev_addr, ETH_ALEN) == 662 0))) 663 return psk->psk; 664 665 if (psk->psk == prev_psk) 666 next_ok = 1; 667 } 668 669 return NULL; 670 } 671 672 673 static int hostapd_config_check_bss(struct hostapd_bss_config *bss, 674 struct hostapd_config *conf, 675 int full_config) 676 { 677 if (full_config && bss->ieee802_1x && !bss->eap_server && 678 !bss->radius->auth_servers) { 679 wpa_printf(MSG_ERROR, "Invalid IEEE 802.1X configuration (no " 680 "EAP authenticator configured)."); 681 return -1; 682 } 683 684 if (bss->wpa) { 685 int wep, i; 686 687 wep = bss->default_wep_key_len > 0 || 688 bss->individual_wep_key_len > 0; 689 for (i = 0; i < NUM_WEP_KEYS; i++) { 690 if (bss->ssid.wep.keys_set) { 691 wep = 1; 692 break; 693 } 694 } 695 696 if (wep) { 697 wpa_printf(MSG_ERROR, "WEP configuration in a WPA network is not supported"); 698 return -1; 699 } 700 } 701 702 if (full_config && bss->wpa && 703 bss->wpa_psk_radius != PSK_RADIUS_IGNORED && 704 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) { 705 wpa_printf(MSG_ERROR, "WPA-PSK using RADIUS enabled, but no " 706 "RADIUS checking (macaddr_acl=2) enabled."); 707 return -1; 708 } 709 710 if (full_config && bss->wpa && (bss->wpa_key_mgmt & WPA_KEY_MGMT_PSK) && 711 bss->ssid.wpa_psk == NULL && bss->ssid.wpa_passphrase == NULL && 712 bss->ssid.wpa_psk_file == NULL && 713 (bss->wpa_psk_radius != PSK_RADIUS_REQUIRED || 714 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH)) { 715 wpa_printf(MSG_ERROR, "WPA-PSK enabled, but PSK or passphrase " 716 "is not configured."); 717 return -1; 718 } 719 720 if (full_config && hostapd_mac_comp_empty(bss->bssid) != 0) { 721 size_t i; 722 723 for (i = 0; i < conf->num_bss; i++) { 724 if (conf->bss[i] != bss && 725 (hostapd_mac_comp(conf->bss[i]->bssid, 726 bss->bssid) == 0)) { 727 wpa_printf(MSG_ERROR, "Duplicate BSSID " MACSTR 728 " on interface '%s' and '%s'.", 729 MAC2STR(bss->bssid), 730 conf->bss[i]->iface, bss->iface); 731 return -1; 732 } 733 } 734 } 735 736 #ifdef CONFIG_IEEE80211R 737 if (full_config && wpa_key_mgmt_ft(bss->wpa_key_mgmt) && 738 (bss->nas_identifier == NULL || 739 os_strlen(bss->nas_identifier) < 1 || 740 os_strlen(bss->nas_identifier) > FT_R0KH_ID_MAX_LEN)) { 741 wpa_printf(MSG_ERROR, "FT (IEEE 802.11r) requires " 742 "nas_identifier to be configured as a 1..48 octet " 743 "string"); 744 return -1; 745 } 746 #endif /* CONFIG_IEEE80211R */ 747 748 #ifdef CONFIG_IEEE80211N 749 if (full_config && conf->ieee80211n && 750 conf->hw_mode == HOSTAPD_MODE_IEEE80211B) { 751 bss->disable_11n = 1; 752 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) in 11b mode is not " 753 "allowed, disabling HT capabilites"); 754 } 755 756 if (full_config && conf->ieee80211n && 757 bss->ssid.security_policy == SECURITY_STATIC_WEP) { 758 bss->disable_11n = 1; 759 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WEP is not " 760 "allowed, disabling HT capabilities"); 761 } 762 763 if (full_config && conf->ieee80211n && bss->wpa && 764 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) && 765 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | 766 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256))) 767 { 768 bss->disable_11n = 1; 769 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WPA/WPA2 " 770 "requires CCMP/GCMP to be enabled, disabling HT " 771 "capabilities"); 772 } 773 #endif /* CONFIG_IEEE80211N */ 774 775 #ifdef CONFIG_WPS2 776 if (full_config && bss->wps_state && bss->ignore_broadcast_ssid) { 777 wpa_printf(MSG_INFO, "WPS: ignore_broadcast_ssid " 778 "configuration forced WPS to be disabled"); 779 bss->wps_state = 0; 780 } 781 782 if (full_config && bss->wps_state && 783 bss->ssid.wep.keys_set && bss->wpa == 0) { 784 wpa_printf(MSG_INFO, "WPS: WEP configuration forced WPS to be " 785 "disabled"); 786 bss->wps_state = 0; 787 } 788 789 if (full_config && bss->wps_state && bss->wpa && 790 (!(bss->wpa & 2) || 791 !(bss->rsn_pairwise & WPA_CIPHER_CCMP))) { 792 wpa_printf(MSG_INFO, "WPS: WPA/TKIP configuration without " 793 "WPA2/CCMP forced WPS to be disabled"); 794 bss->wps_state = 0; 795 } 796 #endif /* CONFIG_WPS2 */ 797 798 #ifdef CONFIG_HS20 799 if (full_config && bss->hs20 && 800 (!(bss->wpa & 2) || 801 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | 802 WPA_CIPHER_CCMP_256 | 803 WPA_CIPHER_GCMP_256)))) { 804 wpa_printf(MSG_ERROR, "HS 2.0: WPA2-Enterprise/CCMP " 805 "configuration is required for Hotspot 2.0 " 806 "functionality"); 807 return -1; 808 } 809 #endif /* CONFIG_HS20 */ 810 811 return 0; 812 } 813 814 815 int hostapd_config_check(struct hostapd_config *conf, int full_config) 816 { 817 size_t i; 818 819 if (full_config && conf->ieee80211d && 820 (!conf->country[0] || !conf->country[1])) { 821 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11d without " 822 "setting the country_code"); 823 return -1; 824 } 825 826 if (full_config && conf->ieee80211h && !conf->ieee80211d) { 827 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11h without " 828 "IEEE 802.11d enabled"); 829 return -1; 830 } 831 832 for (i = 0; i < conf->num_bss; i++) { 833 if (hostapd_config_check_bss(conf->bss[i], conf, full_config)) 834 return -1; 835 } 836 837 return 0; 838 } 839 840 841 void hostapd_set_security_params(struct hostapd_bss_config *bss) 842 { 843 if (bss->individual_wep_key_len == 0) { 844 /* individual keys are not use; can use key idx0 for 845 * broadcast keys */ 846 bss->broadcast_key_idx_min = 0; 847 } 848 849 if ((bss->wpa & 2) && bss->rsn_pairwise == 0) 850 bss->rsn_pairwise = bss->wpa_pairwise; 851 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, bss->wpa_pairwise, 852 bss->rsn_pairwise); 853 854 bss->radius->auth_server = bss->radius->auth_servers; 855 bss->radius->acct_server = bss->radius->acct_servers; 856 857 if (bss->wpa && bss->ieee802_1x) { 858 bss->ssid.security_policy = SECURITY_WPA; 859 } else if (bss->wpa) { 860 bss->ssid.security_policy = SECURITY_WPA_PSK; 861 } else if (bss->ieee802_1x) { 862 int cipher = WPA_CIPHER_NONE; 863 bss->ssid.security_policy = SECURITY_IEEE_802_1X; 864 bss->ssid.wep.default_len = bss->default_wep_key_len; 865 if (bss->default_wep_key_len) 866 cipher = bss->default_wep_key_len >= 13 ? 867 WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40; 868 bss->wpa_group = cipher; 869 bss->wpa_pairwise = cipher; 870 bss->rsn_pairwise = cipher; 871 } else if (bss->ssid.wep.keys_set) { 872 int cipher = WPA_CIPHER_WEP40; 873 if (bss->ssid.wep.len[0] >= 13) 874 cipher = WPA_CIPHER_WEP104; 875 bss->ssid.security_policy = SECURITY_STATIC_WEP; 876 bss->wpa_group = cipher; 877 bss->wpa_pairwise = cipher; 878 bss->rsn_pairwise = cipher; 879 } else { 880 bss->ssid.security_policy = SECURITY_PLAINTEXT; 881 bss->wpa_group = WPA_CIPHER_NONE; 882 bss->wpa_pairwise = WPA_CIPHER_NONE; 883 bss->rsn_pairwise = WPA_CIPHER_NONE; 884 } 885 } 886