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_clear_wpa_psk(struct hostapd_wpa_psk **l) 398 { 399 struct hostapd_wpa_psk *psk, *tmp; 400 401 for (psk = *l; psk;) { 402 tmp = psk; 403 psk = psk->next; 404 bin_clear_free(tmp, sizeof(*tmp)); 405 } 406 *l = NULL; 407 } 408 409 410 void hostapd_config_free_bss(struct hostapd_bss_config *conf) 411 { 412 struct hostapd_eap_user *user, *prev_user; 413 414 if (conf == NULL) 415 return; 416 417 hostapd_config_clear_wpa_psk(&conf->ssid.wpa_psk); 418 419 str_clear_free(conf->ssid.wpa_passphrase); 420 os_free(conf->ssid.wpa_psk_file); 421 hostapd_config_free_wep(&conf->ssid.wep); 422 #ifdef CONFIG_FULL_DYNAMIC_VLAN 423 os_free(conf->ssid.vlan_tagged_interface); 424 #endif /* CONFIG_FULL_DYNAMIC_VLAN */ 425 426 user = conf->eap_user; 427 while (user) { 428 prev_user = user; 429 user = user->next; 430 hostapd_config_free_eap_user(prev_user); 431 } 432 os_free(conf->eap_user_sqlite); 433 434 os_free(conf->eap_req_id_text); 435 os_free(conf->erp_domain); 436 os_free(conf->accept_mac); 437 os_free(conf->deny_mac); 438 os_free(conf->nas_identifier); 439 if (conf->radius) { 440 hostapd_config_free_radius(conf->radius->auth_servers, 441 conf->radius->num_auth_servers); 442 hostapd_config_free_radius(conf->radius->acct_servers, 443 conf->radius->num_acct_servers); 444 } 445 hostapd_config_free_radius_attr(conf->radius_auth_req_attr); 446 hostapd_config_free_radius_attr(conf->radius_acct_req_attr); 447 os_free(conf->rsn_preauth_interfaces); 448 os_free(conf->ctrl_interface); 449 os_free(conf->ca_cert); 450 os_free(conf->server_cert); 451 os_free(conf->private_key); 452 os_free(conf->private_key_passwd); 453 os_free(conf->ocsp_stapling_response); 454 os_free(conf->dh_file); 455 os_free(conf->openssl_ciphers); 456 os_free(conf->pac_opaque_encr_key); 457 os_free(conf->eap_fast_a_id); 458 os_free(conf->eap_fast_a_id_info); 459 os_free(conf->eap_sim_db); 460 os_free(conf->radius_server_clients); 461 os_free(conf->radius); 462 os_free(conf->radius_das_shared_secret); 463 hostapd_config_free_vlan(conf); 464 os_free(conf->time_zone); 465 466 #ifdef CONFIG_IEEE80211R 467 { 468 struct ft_remote_r0kh *r0kh, *r0kh_prev; 469 struct ft_remote_r1kh *r1kh, *r1kh_prev; 470 471 r0kh = conf->r0kh_list; 472 conf->r0kh_list = NULL; 473 while (r0kh) { 474 r0kh_prev = r0kh; 475 r0kh = r0kh->next; 476 os_free(r0kh_prev); 477 } 478 479 r1kh = conf->r1kh_list; 480 conf->r1kh_list = NULL; 481 while (r1kh) { 482 r1kh_prev = r1kh; 483 r1kh = r1kh->next; 484 os_free(r1kh_prev); 485 } 486 } 487 #endif /* CONFIG_IEEE80211R */ 488 489 #ifdef CONFIG_WPS 490 os_free(conf->wps_pin_requests); 491 os_free(conf->device_name); 492 os_free(conf->manufacturer); 493 os_free(conf->model_name); 494 os_free(conf->model_number); 495 os_free(conf->serial_number); 496 os_free(conf->config_methods); 497 os_free(conf->ap_pin); 498 os_free(conf->extra_cred); 499 os_free(conf->ap_settings); 500 os_free(conf->upnp_iface); 501 os_free(conf->friendly_name); 502 os_free(conf->manufacturer_url); 503 os_free(conf->model_description); 504 os_free(conf->model_url); 505 os_free(conf->upc); 506 { 507 unsigned int i; 508 509 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) 510 wpabuf_free(conf->wps_vendor_ext[i]); 511 } 512 wpabuf_free(conf->wps_nfc_dh_pubkey); 513 wpabuf_free(conf->wps_nfc_dh_privkey); 514 wpabuf_free(conf->wps_nfc_dev_pw); 515 #endif /* CONFIG_WPS */ 516 517 os_free(conf->roaming_consortium); 518 os_free(conf->venue_name); 519 os_free(conf->nai_realm_data); 520 os_free(conf->network_auth_type); 521 os_free(conf->anqp_3gpp_cell_net); 522 os_free(conf->domain_name); 523 524 #ifdef CONFIG_RADIUS_TEST 525 os_free(conf->dump_msk_file); 526 #endif /* CONFIG_RADIUS_TEST */ 527 528 #ifdef CONFIG_HS20 529 os_free(conf->hs20_oper_friendly_name); 530 os_free(conf->hs20_wan_metrics); 531 os_free(conf->hs20_connection_capability); 532 os_free(conf->hs20_operating_class); 533 os_free(conf->hs20_icons); 534 if (conf->hs20_osu_providers) { 535 size_t i; 536 for (i = 0; i < conf->hs20_osu_providers_count; i++) { 537 struct hs20_osu_provider *p; 538 size_t j; 539 p = &conf->hs20_osu_providers[i]; 540 os_free(p->friendly_name); 541 os_free(p->server_uri); 542 os_free(p->method_list); 543 for (j = 0; j < p->icons_count; j++) 544 os_free(p->icons[j]); 545 os_free(p->icons); 546 os_free(p->osu_nai); 547 os_free(p->service_desc); 548 } 549 os_free(conf->hs20_osu_providers); 550 } 551 os_free(conf->subscr_remediation_url); 552 #endif /* CONFIG_HS20 */ 553 554 wpabuf_free(conf->vendor_elements); 555 556 os_free(conf->sae_groups); 557 558 os_free(conf->wowlan_triggers); 559 560 os_free(conf->server_id); 561 562 os_free(conf); 563 } 564 565 566 /** 567 * hostapd_config_free - Free hostapd configuration 568 * @conf: Configuration data from hostapd_config_read(). 569 */ 570 void hostapd_config_free(struct hostapd_config *conf) 571 { 572 size_t i; 573 574 if (conf == NULL) 575 return; 576 577 for (i = 0; i < conf->num_bss; i++) 578 hostapd_config_free_bss(conf->bss[i]); 579 os_free(conf->bss); 580 os_free(conf->supported_rates); 581 os_free(conf->basic_rates); 582 os_free(conf->chanlist); 583 os_free(conf->driver_params); 584 #ifdef CONFIG_ACS 585 os_free(conf->acs_chan_bias); 586 #endif /* CONFIG_ACS */ 587 588 os_free(conf); 589 } 590 591 592 /** 593 * hostapd_maclist_found - Find a MAC address from a list 594 * @list: MAC address list 595 * @num_entries: Number of addresses in the list 596 * @addr: Address to search for 597 * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed 598 * Returns: 1 if address is in the list or 0 if not. 599 * 600 * Perform a binary search for given MAC address from a pre-sorted list. 601 */ 602 int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries, 603 const u8 *addr, int *vlan_id) 604 { 605 int start, end, middle, res; 606 607 start = 0; 608 end = num_entries - 1; 609 610 while (start <= end) { 611 middle = (start + end) / 2; 612 res = os_memcmp(list[middle].addr, addr, ETH_ALEN); 613 if (res == 0) { 614 if (vlan_id) 615 *vlan_id = list[middle].vlan_id; 616 return 1; 617 } 618 if (res < 0) 619 start = middle + 1; 620 else 621 end = middle - 1; 622 } 623 624 return 0; 625 } 626 627 628 int hostapd_rate_found(int *list, int rate) 629 { 630 int i; 631 632 if (list == NULL) 633 return 0; 634 635 for (i = 0; list[i] >= 0; i++) 636 if (list[i] == rate) 637 return 1; 638 639 return 0; 640 } 641 642 643 int hostapd_vlan_id_valid(struct hostapd_vlan *vlan, int vlan_id) 644 { 645 struct hostapd_vlan *v = vlan; 646 while (v) { 647 if (v->vlan_id == vlan_id || v->vlan_id == VLAN_ID_WILDCARD) 648 return 1; 649 v = v->next; 650 } 651 return 0; 652 } 653 654 655 const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id) 656 { 657 struct hostapd_vlan *v = vlan; 658 while (v) { 659 if (v->vlan_id == vlan_id) 660 return v->ifname; 661 v = v->next; 662 } 663 return NULL; 664 } 665 666 667 const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf, 668 const u8 *addr, const u8 *p2p_dev_addr, 669 const u8 *prev_psk) 670 { 671 struct hostapd_wpa_psk *psk; 672 int next_ok = prev_psk == NULL; 673 674 if (p2p_dev_addr && !is_zero_ether_addr(p2p_dev_addr)) { 675 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR 676 " p2p_dev_addr=" MACSTR " prev_psk=%p", 677 MAC2STR(addr), MAC2STR(p2p_dev_addr), prev_psk); 678 addr = NULL; /* Use P2P Device Address for matching */ 679 } else { 680 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR 681 " prev_psk=%p", 682 MAC2STR(addr), prev_psk); 683 } 684 685 for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) { 686 if (next_ok && 687 (psk->group || 688 (addr && os_memcmp(psk->addr, addr, ETH_ALEN) == 0) || 689 (!addr && p2p_dev_addr && 690 os_memcmp(psk->p2p_dev_addr, p2p_dev_addr, ETH_ALEN) == 691 0))) 692 return psk->psk; 693 694 if (psk->psk == prev_psk) 695 next_ok = 1; 696 } 697 698 return NULL; 699 } 700 701 702 static int hostapd_config_check_bss(struct hostapd_bss_config *bss, 703 struct hostapd_config *conf, 704 int full_config) 705 { 706 if (full_config && bss->ieee802_1x && !bss->eap_server && 707 !bss->radius->auth_servers) { 708 wpa_printf(MSG_ERROR, "Invalid IEEE 802.1X configuration (no " 709 "EAP authenticator configured)."); 710 return -1; 711 } 712 713 if (bss->wpa) { 714 int wep, i; 715 716 wep = bss->default_wep_key_len > 0 || 717 bss->individual_wep_key_len > 0; 718 for (i = 0; i < NUM_WEP_KEYS; i++) { 719 if (bss->ssid.wep.keys_set) { 720 wep = 1; 721 break; 722 } 723 } 724 725 if (wep) { 726 wpa_printf(MSG_ERROR, "WEP configuration in a WPA network is not supported"); 727 return -1; 728 } 729 } 730 731 if (full_config && bss->wpa && 732 bss->wpa_psk_radius != PSK_RADIUS_IGNORED && 733 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) { 734 wpa_printf(MSG_ERROR, "WPA-PSK using RADIUS enabled, but no " 735 "RADIUS checking (macaddr_acl=2) enabled."); 736 return -1; 737 } 738 739 if (full_config && bss->wpa && (bss->wpa_key_mgmt & WPA_KEY_MGMT_PSK) && 740 bss->ssid.wpa_psk == NULL && bss->ssid.wpa_passphrase == NULL && 741 bss->ssid.wpa_psk_file == NULL && 742 (bss->wpa_psk_radius != PSK_RADIUS_REQUIRED || 743 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH)) { 744 wpa_printf(MSG_ERROR, "WPA-PSK enabled, but PSK or passphrase " 745 "is not configured."); 746 return -1; 747 } 748 749 if (full_config && hostapd_mac_comp_empty(bss->bssid) != 0) { 750 size_t i; 751 752 for (i = 0; i < conf->num_bss; i++) { 753 if (conf->bss[i] != bss && 754 (hostapd_mac_comp(conf->bss[i]->bssid, 755 bss->bssid) == 0)) { 756 wpa_printf(MSG_ERROR, "Duplicate BSSID " MACSTR 757 " on interface '%s' and '%s'.", 758 MAC2STR(bss->bssid), 759 conf->bss[i]->iface, bss->iface); 760 return -1; 761 } 762 } 763 } 764 765 #ifdef CONFIG_IEEE80211R 766 if (full_config && wpa_key_mgmt_ft(bss->wpa_key_mgmt) && 767 (bss->nas_identifier == NULL || 768 os_strlen(bss->nas_identifier) < 1 || 769 os_strlen(bss->nas_identifier) > FT_R0KH_ID_MAX_LEN)) { 770 wpa_printf(MSG_ERROR, "FT (IEEE 802.11r) requires " 771 "nas_identifier to be configured as a 1..48 octet " 772 "string"); 773 return -1; 774 } 775 #endif /* CONFIG_IEEE80211R */ 776 777 #ifdef CONFIG_IEEE80211N 778 if (full_config && conf->ieee80211n && 779 conf->hw_mode == HOSTAPD_MODE_IEEE80211B) { 780 bss->disable_11n = 1; 781 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) in 11b mode is not " 782 "allowed, disabling HT capabilities"); 783 } 784 785 if (full_config && conf->ieee80211n && 786 bss->ssid.security_policy == SECURITY_STATIC_WEP) { 787 bss->disable_11n = 1; 788 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WEP is not " 789 "allowed, disabling HT capabilities"); 790 } 791 792 if (full_config && conf->ieee80211n && bss->wpa && 793 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) && 794 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | 795 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256))) 796 { 797 bss->disable_11n = 1; 798 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WPA/WPA2 " 799 "requires CCMP/GCMP to be enabled, disabling HT " 800 "capabilities"); 801 } 802 #endif /* CONFIG_IEEE80211N */ 803 804 #ifdef CONFIG_WPS 805 if (full_config && bss->wps_state && bss->ignore_broadcast_ssid) { 806 wpa_printf(MSG_INFO, "WPS: ignore_broadcast_ssid " 807 "configuration forced WPS to be disabled"); 808 bss->wps_state = 0; 809 } 810 811 if (full_config && bss->wps_state && 812 bss->ssid.wep.keys_set && bss->wpa == 0) { 813 wpa_printf(MSG_INFO, "WPS: WEP configuration forced WPS to be " 814 "disabled"); 815 bss->wps_state = 0; 816 } 817 818 if (full_config && bss->wps_state && bss->wpa && 819 (!(bss->wpa & 2) || 820 !(bss->rsn_pairwise & WPA_CIPHER_CCMP))) { 821 wpa_printf(MSG_INFO, "WPS: WPA/TKIP configuration without " 822 "WPA2/CCMP forced WPS to be disabled"); 823 bss->wps_state = 0; 824 } 825 #endif /* CONFIG_WPS */ 826 827 #ifdef CONFIG_HS20 828 if (full_config && bss->hs20 && 829 (!(bss->wpa & 2) || 830 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | 831 WPA_CIPHER_CCMP_256 | 832 WPA_CIPHER_GCMP_256)))) { 833 wpa_printf(MSG_ERROR, "HS 2.0: WPA2-Enterprise/CCMP " 834 "configuration is required for Hotspot 2.0 " 835 "functionality"); 836 return -1; 837 } 838 #endif /* CONFIG_HS20 */ 839 840 return 0; 841 } 842 843 844 int hostapd_config_check(struct hostapd_config *conf, int full_config) 845 { 846 size_t i; 847 848 if (full_config && conf->ieee80211d && 849 (!conf->country[0] || !conf->country[1])) { 850 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11d without " 851 "setting the country_code"); 852 return -1; 853 } 854 855 if (full_config && conf->ieee80211h && !conf->ieee80211d) { 856 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11h without " 857 "IEEE 802.11d enabled"); 858 return -1; 859 } 860 861 if (full_config && conf->local_pwr_constraint != -1 && 862 !conf->ieee80211d) { 863 wpa_printf(MSG_ERROR, "Cannot add Power Constraint element without Country element"); 864 return -1; 865 } 866 867 if (full_config && conf->spectrum_mgmt_required && 868 conf->local_pwr_constraint == -1) { 869 wpa_printf(MSG_ERROR, "Cannot set Spectrum Management bit without Country and Power Constraint elements"); 870 return -1; 871 } 872 873 for (i = 0; i < conf->num_bss; i++) { 874 if (hostapd_config_check_bss(conf->bss[i], conf, full_config)) 875 return -1; 876 } 877 878 return 0; 879 } 880 881 882 void hostapd_set_security_params(struct hostapd_bss_config *bss, 883 int full_config) 884 { 885 if (bss->individual_wep_key_len == 0) { 886 /* individual keys are not use; can use key idx0 for 887 * broadcast keys */ 888 bss->broadcast_key_idx_min = 0; 889 } 890 891 if ((bss->wpa & 2) && bss->rsn_pairwise == 0) 892 bss->rsn_pairwise = bss->wpa_pairwise; 893 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, bss->wpa_pairwise, 894 bss->rsn_pairwise); 895 896 if (full_config) { 897 bss->radius->auth_server = bss->radius->auth_servers; 898 bss->radius->acct_server = bss->radius->acct_servers; 899 } 900 901 if (bss->wpa && bss->ieee802_1x) { 902 bss->ssid.security_policy = SECURITY_WPA; 903 } else if (bss->wpa) { 904 bss->ssid.security_policy = SECURITY_WPA_PSK; 905 } else if (bss->ieee802_1x) { 906 int cipher = WPA_CIPHER_NONE; 907 bss->ssid.security_policy = SECURITY_IEEE_802_1X; 908 bss->ssid.wep.default_len = bss->default_wep_key_len; 909 if (full_config && bss->default_wep_key_len) { 910 cipher = bss->default_wep_key_len >= 13 ? 911 WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40; 912 } else if (full_config && bss->ssid.wep.keys_set) { 913 if (bss->ssid.wep.len[0] >= 13) 914 cipher = WPA_CIPHER_WEP104; 915 else 916 cipher = WPA_CIPHER_WEP40; 917 } 918 bss->wpa_group = cipher; 919 bss->wpa_pairwise = cipher; 920 bss->rsn_pairwise = cipher; 921 if (full_config) 922 bss->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA; 923 } else if (bss->ssid.wep.keys_set) { 924 int cipher = WPA_CIPHER_WEP40; 925 if (bss->ssid.wep.len[0] >= 13) 926 cipher = WPA_CIPHER_WEP104; 927 bss->ssid.security_policy = SECURITY_STATIC_WEP; 928 bss->wpa_group = cipher; 929 bss->wpa_pairwise = cipher; 930 bss->rsn_pairwise = cipher; 931 if (full_config) 932 bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE; 933 } else if (bss->osen) { 934 bss->ssid.security_policy = SECURITY_OSEN; 935 bss->wpa_group = WPA_CIPHER_CCMP; 936 bss->wpa_pairwise = 0; 937 bss->rsn_pairwise = WPA_CIPHER_CCMP; 938 } else { 939 bss->ssid.security_policy = SECURITY_PLAINTEXT; 940 bss->wpa_group = WPA_CIPHER_NONE; 941 bss->wpa_pairwise = WPA_CIPHER_NONE; 942 bss->rsn_pairwise = WPA_CIPHER_NONE; 943 if (full_config) 944 bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE; 945 } 946 } 947