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 bss->group_mgmt_cipher = WPA_CIPHER_AES_128_CMAC; 77 #endif /* CONFIG_IEEE80211W */ 78 #ifdef EAP_SERVER_FAST 79 /* both anonymous and authenticated provisioning */ 80 bss->eap_fast_prov = 3; 81 bss->pac_key_lifetime = 7 * 24 * 60 * 60; 82 bss->pac_key_refresh_time = 1 * 24 * 60 * 60; 83 #endif /* EAP_SERVER_FAST */ 84 85 /* Set to -1 as defaults depends on HT in setup */ 86 bss->wmm_enabled = -1; 87 88 #ifdef CONFIG_IEEE80211R 89 bss->ft_over_ds = 1; 90 #endif /* CONFIG_IEEE80211R */ 91 92 bss->radius_das_time_window = 300; 93 94 bss->sae_anti_clogging_threshold = 5; 95 } 96 97 98 struct hostapd_config * hostapd_config_defaults(void) 99 { 100 #define ecw2cw(ecw) ((1 << (ecw)) - 1) 101 102 struct hostapd_config *conf; 103 struct hostapd_bss_config *bss; 104 const int aCWmin = 4, aCWmax = 10; 105 const struct hostapd_wmm_ac_params ac_bk = 106 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */ 107 const struct hostapd_wmm_ac_params ac_be = 108 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */ 109 const struct hostapd_wmm_ac_params ac_vi = /* video traffic */ 110 { aCWmin - 1, aCWmin, 2, 3008 / 32, 0 }; 111 const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */ 112 { aCWmin - 2, aCWmin - 1, 2, 1504 / 32, 0 }; 113 const struct hostapd_tx_queue_params txq_bk = 114 { 7, ecw2cw(aCWmin), ecw2cw(aCWmax), 0 }; 115 const struct hostapd_tx_queue_params txq_be = 116 { 3, ecw2cw(aCWmin), 4 * (ecw2cw(aCWmin) + 1) - 1, 0}; 117 const struct hostapd_tx_queue_params txq_vi = 118 { 1, (ecw2cw(aCWmin) + 1) / 2 - 1, ecw2cw(aCWmin), 30}; 119 const struct hostapd_tx_queue_params txq_vo = 120 { 1, (ecw2cw(aCWmin) + 1) / 4 - 1, 121 (ecw2cw(aCWmin) + 1) / 2 - 1, 15}; 122 123 #undef ecw2cw 124 125 conf = os_zalloc(sizeof(*conf)); 126 bss = os_zalloc(sizeof(*bss)); 127 if (conf == NULL || bss == NULL) { 128 wpa_printf(MSG_ERROR, "Failed to allocate memory for " 129 "configuration data."); 130 os_free(conf); 131 os_free(bss); 132 return NULL; 133 } 134 conf->bss = os_calloc(1, sizeof(struct hostapd_bss_config *)); 135 if (conf->bss == NULL) { 136 os_free(conf); 137 os_free(bss); 138 return NULL; 139 } 140 conf->bss[0] = bss; 141 142 bss->radius = os_zalloc(sizeof(*bss->radius)); 143 if (bss->radius == NULL) { 144 os_free(conf->bss); 145 os_free(conf); 146 os_free(bss); 147 return NULL; 148 } 149 150 hostapd_config_defaults_bss(bss); 151 152 conf->num_bss = 1; 153 154 conf->beacon_int = 100; 155 conf->rts_threshold = -1; /* use driver default: 2347 */ 156 conf->fragm_threshold = -1; /* user driver default: 2346 */ 157 conf->send_probe_response = 1; 158 /* Set to invalid value means do not add Power Constraint IE */ 159 conf->local_pwr_constraint = -1; 160 161 conf->wmm_ac_params[0] = ac_be; 162 conf->wmm_ac_params[1] = ac_bk; 163 conf->wmm_ac_params[2] = ac_vi; 164 conf->wmm_ac_params[3] = ac_vo; 165 166 conf->tx_queue[0] = txq_vo; 167 conf->tx_queue[1] = txq_vi; 168 conf->tx_queue[2] = txq_be; 169 conf->tx_queue[3] = txq_bk; 170 171 conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED; 172 173 conf->ap_table_max_size = 255; 174 conf->ap_table_expiration_time = 60; 175 176 #ifdef CONFIG_TESTING_OPTIONS 177 conf->ignore_probe_probability = 0.0; 178 conf->ignore_auth_probability = 0.0; 179 conf->ignore_assoc_probability = 0.0; 180 conf->ignore_reassoc_probability = 0.0; 181 conf->corrupt_gtk_rekey_mic_probability = 0.0; 182 #endif /* CONFIG_TESTING_OPTIONS */ 183 184 #ifdef CONFIG_ACS 185 conf->acs_num_scans = 5; 186 #endif /* CONFIG_ACS */ 187 188 return conf; 189 } 190 191 192 int hostapd_mac_comp(const void *a, const void *b) 193 { 194 return os_memcmp(a, b, sizeof(macaddr)); 195 } 196 197 198 int hostapd_mac_comp_empty(const void *a) 199 { 200 macaddr empty = { 0 }; 201 return os_memcmp(a, empty, sizeof(macaddr)); 202 } 203 204 205 static int hostapd_config_read_wpa_psk(const char *fname, 206 struct hostapd_ssid *ssid) 207 { 208 FILE *f; 209 char buf[128], *pos; 210 int line = 0, ret = 0, len, ok; 211 u8 addr[ETH_ALEN]; 212 struct hostapd_wpa_psk *psk; 213 214 if (!fname) 215 return 0; 216 217 f = fopen(fname, "r"); 218 if (!f) { 219 wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname); 220 return -1; 221 } 222 223 while (fgets(buf, sizeof(buf), f)) { 224 line++; 225 226 if (buf[0] == '#') 227 continue; 228 pos = buf; 229 while (*pos != '\0') { 230 if (*pos == '\n') { 231 *pos = '\0'; 232 break; 233 } 234 pos++; 235 } 236 if (buf[0] == '\0') 237 continue; 238 239 if (hwaddr_aton(buf, addr)) { 240 wpa_printf(MSG_ERROR, "Invalid MAC address '%s' on " 241 "line %d in '%s'", buf, line, fname); 242 ret = -1; 243 break; 244 } 245 246 psk = os_zalloc(sizeof(*psk)); 247 if (psk == NULL) { 248 wpa_printf(MSG_ERROR, "WPA PSK allocation failed"); 249 ret = -1; 250 break; 251 } 252 if (is_zero_ether_addr(addr)) 253 psk->group = 1; 254 else 255 os_memcpy(psk->addr, addr, ETH_ALEN); 256 257 pos = buf + 17; 258 if (*pos == '\0') { 259 wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'", 260 line, fname); 261 os_free(psk); 262 ret = -1; 263 break; 264 } 265 pos++; 266 267 ok = 0; 268 len = os_strlen(pos); 269 if (len == 64 && hexstr2bin(pos, psk->psk, PMK_LEN) == 0) 270 ok = 1; 271 else if (len >= 8 && len < 64) { 272 pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len, 273 4096, psk->psk, PMK_LEN); 274 ok = 1; 275 } 276 if (!ok) { 277 wpa_printf(MSG_ERROR, "Invalid PSK '%s' on line %d in " 278 "'%s'", pos, line, fname); 279 os_free(psk); 280 ret = -1; 281 break; 282 } 283 284 psk->next = ssid->wpa_psk; 285 ssid->wpa_psk = psk; 286 } 287 288 fclose(f); 289 290 return ret; 291 } 292 293 294 static int hostapd_derive_psk(struct hostapd_ssid *ssid) 295 { 296 ssid->wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk)); 297 if (ssid->wpa_psk == NULL) { 298 wpa_printf(MSG_ERROR, "Unable to alloc space for PSK"); 299 return -1; 300 } 301 wpa_hexdump_ascii(MSG_DEBUG, "SSID", 302 (u8 *) ssid->ssid, ssid->ssid_len); 303 wpa_hexdump_ascii_key(MSG_DEBUG, "PSK (ASCII passphrase)", 304 (u8 *) ssid->wpa_passphrase, 305 os_strlen(ssid->wpa_passphrase)); 306 pbkdf2_sha1(ssid->wpa_passphrase, 307 ssid->ssid, ssid->ssid_len, 308 4096, ssid->wpa_psk->psk, PMK_LEN); 309 wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)", 310 ssid->wpa_psk->psk, PMK_LEN); 311 return 0; 312 } 313 314 315 int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf) 316 { 317 struct hostapd_ssid *ssid = &conf->ssid; 318 319 if (ssid->wpa_passphrase != NULL) { 320 if (ssid->wpa_psk != NULL) { 321 wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK " 322 "instead of passphrase"); 323 } else { 324 wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on " 325 "passphrase"); 326 if (hostapd_derive_psk(ssid) < 0) 327 return -1; 328 } 329 ssid->wpa_psk->group = 1; 330 } 331 332 if (ssid->wpa_psk_file) { 333 if (hostapd_config_read_wpa_psk(ssid->wpa_psk_file, 334 &conf->ssid)) 335 return -1; 336 } 337 338 return 0; 339 } 340 341 342 static void hostapd_config_free_radius(struct hostapd_radius_server *servers, 343 int num_servers) 344 { 345 int i; 346 347 for (i = 0; i < num_servers; i++) { 348 os_free(servers[i].shared_secret); 349 } 350 os_free(servers); 351 } 352 353 354 struct hostapd_radius_attr * 355 hostapd_config_get_radius_attr(struct hostapd_radius_attr *attr, u8 type) 356 { 357 for (; attr; attr = attr->next) { 358 if (attr->type == type) 359 return attr; 360 } 361 return NULL; 362 } 363 364 365 static void hostapd_config_free_radius_attr(struct hostapd_radius_attr *attr) 366 { 367 struct hostapd_radius_attr *prev; 368 369 while (attr) { 370 prev = attr; 371 attr = attr->next; 372 wpabuf_free(prev->val); 373 os_free(prev); 374 } 375 } 376 377 378 void hostapd_config_free_eap_user(struct hostapd_eap_user *user) 379 { 380 hostapd_config_free_radius_attr(user->accept_attr); 381 os_free(user->identity); 382 bin_clear_free(user->password, user->password_len); 383 os_free(user); 384 } 385 386 387 static void hostapd_config_free_wep(struct hostapd_wep_keys *keys) 388 { 389 int i; 390 for (i = 0; i < NUM_WEP_KEYS; i++) { 391 bin_clear_free(keys->key[i], keys->len[i]); 392 keys->key[i] = NULL; 393 } 394 } 395 396 397 void hostapd_config_free_bss(struct hostapd_bss_config *conf) 398 { 399 struct hostapd_wpa_psk *psk, *prev; 400 struct hostapd_eap_user *user, *prev_user; 401 402 if (conf == NULL) 403 return; 404 405 psk = conf->ssid.wpa_psk; 406 while (psk) { 407 prev = psk; 408 psk = psk->next; 409 bin_clear_free(prev, sizeof(*prev)); 410 } 411 412 str_clear_free(conf->ssid.wpa_passphrase); 413 os_free(conf->ssid.wpa_psk_file); 414 hostapd_config_free_wep(&conf->ssid.wep); 415 #ifdef CONFIG_FULL_DYNAMIC_VLAN 416 os_free(conf->ssid.vlan_tagged_interface); 417 #endif /* CONFIG_FULL_DYNAMIC_VLAN */ 418 419 user = conf->eap_user; 420 while (user) { 421 prev_user = user; 422 user = user->next; 423 hostapd_config_free_eap_user(prev_user); 424 } 425 os_free(conf->eap_user_sqlite); 426 427 os_free(conf->eap_req_id_text); 428 os_free(conf->accept_mac); 429 os_free(conf->deny_mac); 430 os_free(conf->nas_identifier); 431 if (conf->radius) { 432 hostapd_config_free_radius(conf->radius->auth_servers, 433 conf->radius->num_auth_servers); 434 hostapd_config_free_radius(conf->radius->acct_servers, 435 conf->radius->num_acct_servers); 436 } 437 hostapd_config_free_radius_attr(conf->radius_auth_req_attr); 438 hostapd_config_free_radius_attr(conf->radius_acct_req_attr); 439 os_free(conf->rsn_preauth_interfaces); 440 os_free(conf->ctrl_interface); 441 os_free(conf->ca_cert); 442 os_free(conf->server_cert); 443 os_free(conf->private_key); 444 os_free(conf->private_key_passwd); 445 os_free(conf->ocsp_stapling_response); 446 os_free(conf->dh_file); 447 os_free(conf->pac_opaque_encr_key); 448 os_free(conf->eap_fast_a_id); 449 os_free(conf->eap_fast_a_id_info); 450 os_free(conf->eap_sim_db); 451 os_free(conf->radius_server_clients); 452 os_free(conf->test_socket); 453 os_free(conf->radius); 454 os_free(conf->radius_das_shared_secret); 455 hostapd_config_free_vlan(conf); 456 os_free(conf->time_zone); 457 458 #ifdef CONFIG_IEEE80211R 459 { 460 struct ft_remote_r0kh *r0kh, *r0kh_prev; 461 struct ft_remote_r1kh *r1kh, *r1kh_prev; 462 463 r0kh = conf->r0kh_list; 464 conf->r0kh_list = NULL; 465 while (r0kh) { 466 r0kh_prev = r0kh; 467 r0kh = r0kh->next; 468 os_free(r0kh_prev); 469 } 470 471 r1kh = conf->r1kh_list; 472 conf->r1kh_list = NULL; 473 while (r1kh) { 474 r1kh_prev = r1kh; 475 r1kh = r1kh->next; 476 os_free(r1kh_prev); 477 } 478 } 479 #endif /* CONFIG_IEEE80211R */ 480 481 #ifdef CONFIG_WPS 482 os_free(conf->wps_pin_requests); 483 os_free(conf->device_name); 484 os_free(conf->manufacturer); 485 os_free(conf->model_name); 486 os_free(conf->model_number); 487 os_free(conf->serial_number); 488 os_free(conf->config_methods); 489 os_free(conf->ap_pin); 490 os_free(conf->extra_cred); 491 os_free(conf->ap_settings); 492 os_free(conf->upnp_iface); 493 os_free(conf->friendly_name); 494 os_free(conf->manufacturer_url); 495 os_free(conf->model_description); 496 os_free(conf->model_url); 497 os_free(conf->upc); 498 wpabuf_free(conf->wps_nfc_dh_pubkey); 499 wpabuf_free(conf->wps_nfc_dh_privkey); 500 wpabuf_free(conf->wps_nfc_dev_pw); 501 #endif /* CONFIG_WPS */ 502 503 os_free(conf->roaming_consortium); 504 os_free(conf->venue_name); 505 os_free(conf->nai_realm_data); 506 os_free(conf->network_auth_type); 507 os_free(conf->anqp_3gpp_cell_net); 508 os_free(conf->domain_name); 509 510 #ifdef CONFIG_RADIUS_TEST 511 os_free(conf->dump_msk_file); 512 #endif /* CONFIG_RADIUS_TEST */ 513 514 #ifdef CONFIG_HS20 515 os_free(conf->hs20_oper_friendly_name); 516 os_free(conf->hs20_wan_metrics); 517 os_free(conf->hs20_connection_capability); 518 os_free(conf->hs20_operating_class); 519 os_free(conf->hs20_icons); 520 if (conf->hs20_osu_providers) { 521 size_t i; 522 for (i = 0; i < conf->hs20_osu_providers_count; i++) { 523 struct hs20_osu_provider *p; 524 size_t j; 525 p = &conf->hs20_osu_providers[i]; 526 os_free(p->friendly_name); 527 os_free(p->server_uri); 528 os_free(p->method_list); 529 for (j = 0; j < p->icons_count; j++) 530 os_free(p->icons[j]); 531 os_free(p->icons); 532 os_free(p->osu_nai); 533 os_free(p->service_desc); 534 } 535 os_free(conf->hs20_osu_providers); 536 } 537 os_free(conf->subscr_remediation_url); 538 #endif /* CONFIG_HS20 */ 539 540 wpabuf_free(conf->vendor_elements); 541 542 os_free(conf->sae_groups); 543 544 os_free(conf->server_id); 545 546 os_free(conf); 547 } 548 549 550 /** 551 * hostapd_config_free - Free hostapd configuration 552 * @conf: Configuration data from hostapd_config_read(). 553 */ 554 void hostapd_config_free(struct hostapd_config *conf) 555 { 556 size_t i; 557 558 if (conf == NULL) 559 return; 560 561 for (i = 0; i < conf->num_bss; i++) 562 hostapd_config_free_bss(conf->bss[i]); 563 os_free(conf->bss); 564 os_free(conf->supported_rates); 565 os_free(conf->basic_rates); 566 os_free(conf->chanlist); 567 568 os_free(conf); 569 } 570 571 572 /** 573 * hostapd_maclist_found - Find a MAC address from a list 574 * @list: MAC address list 575 * @num_entries: Number of addresses in the list 576 * @addr: Address to search for 577 * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed 578 * Returns: 1 if address is in the list or 0 if not. 579 * 580 * Perform a binary search for given MAC address from a pre-sorted list. 581 */ 582 int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries, 583 const u8 *addr, int *vlan_id) 584 { 585 int start, end, middle, res; 586 587 start = 0; 588 end = num_entries - 1; 589 590 while (start <= end) { 591 middle = (start + end) / 2; 592 res = os_memcmp(list[middle].addr, addr, ETH_ALEN); 593 if (res == 0) { 594 if (vlan_id) 595 *vlan_id = list[middle].vlan_id; 596 return 1; 597 } 598 if (res < 0) 599 start = middle + 1; 600 else 601 end = middle - 1; 602 } 603 604 return 0; 605 } 606 607 608 int hostapd_rate_found(int *list, int rate) 609 { 610 int i; 611 612 if (list == NULL) 613 return 0; 614 615 for (i = 0; list[i] >= 0; i++) 616 if (list[i] == rate) 617 return 1; 618 619 return 0; 620 } 621 622 623 int hostapd_vlan_id_valid(struct hostapd_vlan *vlan, int vlan_id) 624 { 625 struct hostapd_vlan *v = vlan; 626 while (v) { 627 if (v->vlan_id == vlan_id || v->vlan_id == VLAN_ID_WILDCARD) 628 return 1; 629 v = v->next; 630 } 631 return 0; 632 } 633 634 635 const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id) 636 { 637 struct hostapd_vlan *v = vlan; 638 while (v) { 639 if (v->vlan_id == vlan_id) 640 return v->ifname; 641 v = v->next; 642 } 643 return NULL; 644 } 645 646 647 const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf, 648 const u8 *addr, const u8 *p2p_dev_addr, 649 const u8 *prev_psk) 650 { 651 struct hostapd_wpa_psk *psk; 652 int next_ok = prev_psk == NULL; 653 654 if (p2p_dev_addr && !is_zero_ether_addr(p2p_dev_addr)) { 655 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR 656 " p2p_dev_addr=" MACSTR " prev_psk=%p", 657 MAC2STR(addr), MAC2STR(p2p_dev_addr), prev_psk); 658 addr = NULL; /* Use P2P Device Address for matching */ 659 } else { 660 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR 661 " prev_psk=%p", 662 MAC2STR(addr), prev_psk); 663 } 664 665 for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) { 666 if (next_ok && 667 (psk->group || 668 (addr && os_memcmp(psk->addr, addr, ETH_ALEN) == 0) || 669 (!addr && p2p_dev_addr && 670 os_memcmp(psk->p2p_dev_addr, p2p_dev_addr, ETH_ALEN) == 671 0))) 672 return psk->psk; 673 674 if (psk->psk == prev_psk) 675 next_ok = 1; 676 } 677 678 return NULL; 679 } 680 681 682 static int hostapd_config_check_bss(struct hostapd_bss_config *bss, 683 struct hostapd_config *conf, 684 int full_config) 685 { 686 if (full_config && bss->ieee802_1x && !bss->eap_server && 687 !bss->radius->auth_servers) { 688 wpa_printf(MSG_ERROR, "Invalid IEEE 802.1X configuration (no " 689 "EAP authenticator configured)."); 690 return -1; 691 } 692 693 if (bss->wpa) { 694 int wep, i; 695 696 wep = bss->default_wep_key_len > 0 || 697 bss->individual_wep_key_len > 0; 698 for (i = 0; i < NUM_WEP_KEYS; i++) { 699 if (bss->ssid.wep.keys_set) { 700 wep = 1; 701 break; 702 } 703 } 704 705 if (wep) { 706 wpa_printf(MSG_ERROR, "WEP configuration in a WPA network is not supported"); 707 return -1; 708 } 709 } 710 711 if (full_config && bss->wpa && 712 bss->wpa_psk_radius != PSK_RADIUS_IGNORED && 713 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) { 714 wpa_printf(MSG_ERROR, "WPA-PSK using RADIUS enabled, but no " 715 "RADIUS checking (macaddr_acl=2) enabled."); 716 return -1; 717 } 718 719 if (full_config && bss->wpa && (bss->wpa_key_mgmt & WPA_KEY_MGMT_PSK) && 720 bss->ssid.wpa_psk == NULL && bss->ssid.wpa_passphrase == NULL && 721 bss->ssid.wpa_psk_file == NULL && 722 (bss->wpa_psk_radius != PSK_RADIUS_REQUIRED || 723 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH)) { 724 wpa_printf(MSG_ERROR, "WPA-PSK enabled, but PSK or passphrase " 725 "is not configured."); 726 return -1; 727 } 728 729 if (full_config && hostapd_mac_comp_empty(bss->bssid) != 0) { 730 size_t i; 731 732 for (i = 0; i < conf->num_bss; i++) { 733 if (conf->bss[i] != bss && 734 (hostapd_mac_comp(conf->bss[i]->bssid, 735 bss->bssid) == 0)) { 736 wpa_printf(MSG_ERROR, "Duplicate BSSID " MACSTR 737 " on interface '%s' and '%s'.", 738 MAC2STR(bss->bssid), 739 conf->bss[i]->iface, bss->iface); 740 return -1; 741 } 742 } 743 } 744 745 #ifdef CONFIG_IEEE80211R 746 if (full_config && wpa_key_mgmt_ft(bss->wpa_key_mgmt) && 747 (bss->nas_identifier == NULL || 748 os_strlen(bss->nas_identifier) < 1 || 749 os_strlen(bss->nas_identifier) > FT_R0KH_ID_MAX_LEN)) { 750 wpa_printf(MSG_ERROR, "FT (IEEE 802.11r) requires " 751 "nas_identifier to be configured as a 1..48 octet " 752 "string"); 753 return -1; 754 } 755 #endif /* CONFIG_IEEE80211R */ 756 757 #ifdef CONFIG_IEEE80211N 758 if (full_config && conf->ieee80211n && 759 conf->hw_mode == HOSTAPD_MODE_IEEE80211B) { 760 bss->disable_11n = 1; 761 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) in 11b mode is not " 762 "allowed, disabling HT capabilities"); 763 } 764 765 if (full_config && conf->ieee80211n && 766 bss->ssid.security_policy == SECURITY_STATIC_WEP) { 767 bss->disable_11n = 1; 768 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WEP is not " 769 "allowed, disabling HT capabilities"); 770 } 771 772 if (full_config && conf->ieee80211n && bss->wpa && 773 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) && 774 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | 775 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256))) 776 { 777 bss->disable_11n = 1; 778 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WPA/WPA2 " 779 "requires CCMP/GCMP to be enabled, disabling HT " 780 "capabilities"); 781 } 782 #endif /* CONFIG_IEEE80211N */ 783 784 #ifdef CONFIG_WPS 785 if (full_config && bss->wps_state && bss->ignore_broadcast_ssid) { 786 wpa_printf(MSG_INFO, "WPS: ignore_broadcast_ssid " 787 "configuration forced WPS to be disabled"); 788 bss->wps_state = 0; 789 } 790 791 if (full_config && bss->wps_state && 792 bss->ssid.wep.keys_set && bss->wpa == 0) { 793 wpa_printf(MSG_INFO, "WPS: WEP configuration forced WPS to be " 794 "disabled"); 795 bss->wps_state = 0; 796 } 797 798 if (full_config && bss->wps_state && bss->wpa && 799 (!(bss->wpa & 2) || 800 !(bss->rsn_pairwise & WPA_CIPHER_CCMP))) { 801 wpa_printf(MSG_INFO, "WPS: WPA/TKIP configuration without " 802 "WPA2/CCMP forced WPS to be disabled"); 803 bss->wps_state = 0; 804 } 805 #endif /* CONFIG_WPS */ 806 807 #ifdef CONFIG_HS20 808 if (full_config && bss->hs20 && 809 (!(bss->wpa & 2) || 810 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | 811 WPA_CIPHER_CCMP_256 | 812 WPA_CIPHER_GCMP_256)))) { 813 wpa_printf(MSG_ERROR, "HS 2.0: WPA2-Enterprise/CCMP " 814 "configuration is required for Hotspot 2.0 " 815 "functionality"); 816 return -1; 817 } 818 #endif /* CONFIG_HS20 */ 819 820 return 0; 821 } 822 823 824 int hostapd_config_check(struct hostapd_config *conf, int full_config) 825 { 826 size_t i; 827 828 if (full_config && conf->ieee80211d && 829 (!conf->country[0] || !conf->country[1])) { 830 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11d without " 831 "setting the country_code"); 832 return -1; 833 } 834 835 if (full_config && conf->ieee80211h && !conf->ieee80211d) { 836 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11h without " 837 "IEEE 802.11d enabled"); 838 return -1; 839 } 840 841 if (full_config && conf->local_pwr_constraint != -1 && 842 !conf->ieee80211d) { 843 wpa_printf(MSG_ERROR, "Cannot add Power Constraint element without Country element"); 844 return -1; 845 } 846 847 if (full_config && conf->spectrum_mgmt_required && 848 conf->local_pwr_constraint == -1) { 849 wpa_printf(MSG_ERROR, "Cannot set Spectrum Management bit without Country and Power Constraint elements"); 850 return -1; 851 } 852 853 for (i = 0; i < conf->num_bss; i++) { 854 if (hostapd_config_check_bss(conf->bss[i], conf, full_config)) 855 return -1; 856 } 857 858 return 0; 859 } 860 861 862 void hostapd_set_security_params(struct hostapd_bss_config *bss, 863 int full_config) 864 { 865 if (bss->individual_wep_key_len == 0) { 866 /* individual keys are not use; can use key idx0 for 867 * broadcast keys */ 868 bss->broadcast_key_idx_min = 0; 869 } 870 871 if ((bss->wpa & 2) && bss->rsn_pairwise == 0) 872 bss->rsn_pairwise = bss->wpa_pairwise; 873 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, bss->wpa_pairwise, 874 bss->rsn_pairwise); 875 876 if (full_config) { 877 bss->radius->auth_server = bss->radius->auth_servers; 878 bss->radius->acct_server = bss->radius->acct_servers; 879 } 880 881 if (bss->wpa && bss->ieee802_1x) { 882 bss->ssid.security_policy = SECURITY_WPA; 883 } else if (bss->wpa) { 884 bss->ssid.security_policy = SECURITY_WPA_PSK; 885 } else if (bss->ieee802_1x) { 886 int cipher = WPA_CIPHER_NONE; 887 bss->ssid.security_policy = SECURITY_IEEE_802_1X; 888 bss->ssid.wep.default_len = bss->default_wep_key_len; 889 if (bss->default_wep_key_len) 890 cipher = bss->default_wep_key_len >= 13 ? 891 WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40; 892 bss->wpa_group = cipher; 893 bss->wpa_pairwise = cipher; 894 bss->rsn_pairwise = cipher; 895 } else if (bss->ssid.wep.keys_set) { 896 int cipher = WPA_CIPHER_WEP40; 897 if (bss->ssid.wep.len[0] >= 13) 898 cipher = WPA_CIPHER_WEP104; 899 bss->ssid.security_policy = SECURITY_STATIC_WEP; 900 bss->wpa_group = cipher; 901 bss->wpa_pairwise = cipher; 902 bss->rsn_pairwise = cipher; 903 } else if (bss->osen) { 904 bss->ssid.security_policy = SECURITY_OSEN; 905 bss->wpa_group = WPA_CIPHER_CCMP; 906 bss->wpa_pairwise = 0; 907 bss->rsn_pairwise = WPA_CIPHER_CCMP; 908 } else { 909 bss->ssid.security_policy = SECURITY_PLAINTEXT; 910 bss->wpa_group = WPA_CIPHER_NONE; 911 bss->wpa_pairwise = WPA_CIPHER_NONE; 912 bss->rsn_pairwise = WPA_CIPHER_NONE; 913 } 914 } 915