1 /* 2 * hostapd / Configuration helper functions 3 * Copyright (c) 2003-2014, 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 "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 conf->acs = 0; 185 conf->acs_ch_list.num = 0; 186 #ifdef CONFIG_ACS 187 conf->acs_num_scans = 5; 188 #endif /* CONFIG_ACS */ 189 190 return conf; 191 } 192 193 194 int hostapd_mac_comp(const void *a, const void *b) 195 { 196 return os_memcmp(a, b, sizeof(macaddr)); 197 } 198 199 200 int hostapd_mac_comp_empty(const void *a) 201 { 202 macaddr empty = { 0 }; 203 return os_memcmp(a, empty, sizeof(macaddr)); 204 } 205 206 207 static int hostapd_config_read_wpa_psk(const char *fname, 208 struct hostapd_ssid *ssid) 209 { 210 FILE *f; 211 char buf[128], *pos; 212 int line = 0, ret = 0, len, ok; 213 u8 addr[ETH_ALEN]; 214 struct hostapd_wpa_psk *psk; 215 216 if (!fname) 217 return 0; 218 219 f = fopen(fname, "r"); 220 if (!f) { 221 wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname); 222 return -1; 223 } 224 225 while (fgets(buf, sizeof(buf), f)) { 226 line++; 227 228 if (buf[0] == '#') 229 continue; 230 pos = buf; 231 while (*pos != '\0') { 232 if (*pos == '\n') { 233 *pos = '\0'; 234 break; 235 } 236 pos++; 237 } 238 if (buf[0] == '\0') 239 continue; 240 241 if (hwaddr_aton(buf, addr)) { 242 wpa_printf(MSG_ERROR, "Invalid MAC address '%s' on " 243 "line %d in '%s'", buf, line, fname); 244 ret = -1; 245 break; 246 } 247 248 psk = os_zalloc(sizeof(*psk)); 249 if (psk == NULL) { 250 wpa_printf(MSG_ERROR, "WPA PSK allocation failed"); 251 ret = -1; 252 break; 253 } 254 if (is_zero_ether_addr(addr)) 255 psk->group = 1; 256 else 257 os_memcpy(psk->addr, addr, ETH_ALEN); 258 259 pos = buf + 17; 260 if (*pos == '\0') { 261 wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'", 262 line, fname); 263 os_free(psk); 264 ret = -1; 265 break; 266 } 267 pos++; 268 269 ok = 0; 270 len = os_strlen(pos); 271 if (len == 64 && hexstr2bin(pos, psk->psk, PMK_LEN) == 0) 272 ok = 1; 273 else if (len >= 8 && len < 64) { 274 pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len, 275 4096, psk->psk, PMK_LEN); 276 ok = 1; 277 } 278 if (!ok) { 279 wpa_printf(MSG_ERROR, "Invalid PSK '%s' on line %d in " 280 "'%s'", pos, line, fname); 281 os_free(psk); 282 ret = -1; 283 break; 284 } 285 286 psk->next = ssid->wpa_psk; 287 ssid->wpa_psk = psk; 288 } 289 290 fclose(f); 291 292 return ret; 293 } 294 295 296 static int hostapd_derive_psk(struct hostapd_ssid *ssid) 297 { 298 ssid->wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk)); 299 if (ssid->wpa_psk == NULL) { 300 wpa_printf(MSG_ERROR, "Unable to alloc space for PSK"); 301 return -1; 302 } 303 wpa_hexdump_ascii(MSG_DEBUG, "SSID", 304 (u8 *) ssid->ssid, ssid->ssid_len); 305 wpa_hexdump_ascii_key(MSG_DEBUG, "PSK (ASCII passphrase)", 306 (u8 *) ssid->wpa_passphrase, 307 os_strlen(ssid->wpa_passphrase)); 308 pbkdf2_sha1(ssid->wpa_passphrase, 309 ssid->ssid, ssid->ssid_len, 310 4096, ssid->wpa_psk->psk, PMK_LEN); 311 wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)", 312 ssid->wpa_psk->psk, PMK_LEN); 313 return 0; 314 } 315 316 317 int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf) 318 { 319 struct hostapd_ssid *ssid = &conf->ssid; 320 321 if (ssid->wpa_passphrase != NULL) { 322 if (ssid->wpa_psk != NULL) { 323 wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK " 324 "instead of passphrase"); 325 } else { 326 wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on " 327 "passphrase"); 328 if (hostapd_derive_psk(ssid) < 0) 329 return -1; 330 } 331 ssid->wpa_psk->group = 1; 332 } 333 334 if (ssid->wpa_psk_file) { 335 if (hostapd_config_read_wpa_psk(ssid->wpa_psk_file, 336 &conf->ssid)) 337 return -1; 338 } 339 340 return 0; 341 } 342 343 344 static void hostapd_config_free_radius(struct hostapd_radius_server *servers, 345 int num_servers) 346 { 347 int i; 348 349 for (i = 0; i < num_servers; i++) { 350 os_free(servers[i].shared_secret); 351 } 352 os_free(servers); 353 } 354 355 356 struct hostapd_radius_attr * 357 hostapd_config_get_radius_attr(struct hostapd_radius_attr *attr, u8 type) 358 { 359 for (; attr; attr = attr->next) { 360 if (attr->type == type) 361 return attr; 362 } 363 return NULL; 364 } 365 366 367 static void hostapd_config_free_radius_attr(struct hostapd_radius_attr *attr) 368 { 369 struct hostapd_radius_attr *prev; 370 371 while (attr) { 372 prev = attr; 373 attr = attr->next; 374 wpabuf_free(prev->val); 375 os_free(prev); 376 } 377 } 378 379 380 void hostapd_config_free_eap_user(struct hostapd_eap_user *user) 381 { 382 hostapd_config_free_radius_attr(user->accept_attr); 383 os_free(user->identity); 384 bin_clear_free(user->password, user->password_len); 385 os_free(user); 386 } 387 388 389 static void hostapd_config_free_wep(struct hostapd_wep_keys *keys) 390 { 391 int i; 392 for (i = 0; i < NUM_WEP_KEYS; i++) { 393 bin_clear_free(keys->key[i], keys->len[i]); 394 keys->key[i] = NULL; 395 } 396 } 397 398 399 void hostapd_config_clear_wpa_psk(struct hostapd_wpa_psk **l) 400 { 401 struct hostapd_wpa_psk *psk, *tmp; 402 403 for (psk = *l; psk;) { 404 tmp = psk; 405 psk = psk->next; 406 bin_clear_free(tmp, sizeof(*tmp)); 407 } 408 *l = NULL; 409 } 410 411 412 void hostapd_config_free_bss(struct hostapd_bss_config *conf) 413 { 414 struct hostapd_eap_user *user, *prev_user; 415 416 if (conf == NULL) 417 return; 418 419 hostapd_config_clear_wpa_psk(&conf->ssid.wpa_psk); 420 421 str_clear_free(conf->ssid.wpa_passphrase); 422 os_free(conf->ssid.wpa_psk_file); 423 hostapd_config_free_wep(&conf->ssid.wep); 424 #ifdef CONFIG_FULL_DYNAMIC_VLAN 425 os_free(conf->ssid.vlan_tagged_interface); 426 #endif /* CONFIG_FULL_DYNAMIC_VLAN */ 427 428 user = conf->eap_user; 429 while (user) { 430 prev_user = user; 431 user = user->next; 432 hostapd_config_free_eap_user(prev_user); 433 } 434 os_free(conf->eap_user_sqlite); 435 436 os_free(conf->eap_req_id_text); 437 os_free(conf->erp_domain); 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->openssl_ciphers); 458 os_free(conf->pac_opaque_encr_key); 459 os_free(conf->eap_fast_a_id); 460 os_free(conf->eap_fast_a_id_info); 461 os_free(conf->eap_sim_db); 462 os_free(conf->radius_server_clients); 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 { 509 unsigned int i; 510 511 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) 512 wpabuf_free(conf->wps_vendor_ext[i]); 513 } 514 wpabuf_free(conf->wps_nfc_dh_pubkey); 515 wpabuf_free(conf->wps_nfc_dh_privkey); 516 wpabuf_free(conf->wps_nfc_dev_pw); 517 #endif /* CONFIG_WPS */ 518 519 os_free(conf->roaming_consortium); 520 os_free(conf->venue_name); 521 os_free(conf->nai_realm_data); 522 os_free(conf->network_auth_type); 523 os_free(conf->anqp_3gpp_cell_net); 524 os_free(conf->domain_name); 525 526 #ifdef CONFIG_RADIUS_TEST 527 os_free(conf->dump_msk_file); 528 #endif /* CONFIG_RADIUS_TEST */ 529 530 #ifdef CONFIG_HS20 531 os_free(conf->hs20_oper_friendly_name); 532 os_free(conf->hs20_wan_metrics); 533 os_free(conf->hs20_connection_capability); 534 os_free(conf->hs20_operating_class); 535 os_free(conf->hs20_icons); 536 if (conf->hs20_osu_providers) { 537 size_t i; 538 for (i = 0; i < conf->hs20_osu_providers_count; i++) { 539 struct hs20_osu_provider *p; 540 size_t j; 541 p = &conf->hs20_osu_providers[i]; 542 os_free(p->friendly_name); 543 os_free(p->server_uri); 544 os_free(p->method_list); 545 for (j = 0; j < p->icons_count; j++) 546 os_free(p->icons[j]); 547 os_free(p->icons); 548 os_free(p->osu_nai); 549 os_free(p->service_desc); 550 } 551 os_free(conf->hs20_osu_providers); 552 } 553 os_free(conf->subscr_remediation_url); 554 #endif /* CONFIG_HS20 */ 555 556 wpabuf_free(conf->vendor_elements); 557 558 os_free(conf->sae_groups); 559 560 os_free(conf->wowlan_triggers); 561 562 os_free(conf->server_id); 563 564 os_free(conf); 565 } 566 567 568 /** 569 * hostapd_config_free - Free hostapd configuration 570 * @conf: Configuration data from hostapd_config_read(). 571 */ 572 void hostapd_config_free(struct hostapd_config *conf) 573 { 574 size_t i; 575 576 if (conf == NULL) 577 return; 578 579 for (i = 0; i < conf->num_bss; i++) 580 hostapd_config_free_bss(conf->bss[i]); 581 os_free(conf->bss); 582 os_free(conf->supported_rates); 583 os_free(conf->basic_rates); 584 os_free(conf->acs_ch_list.range); 585 os_free(conf->driver_params); 586 #ifdef CONFIG_ACS 587 os_free(conf->acs_chan_bias); 588 #endif /* CONFIG_ACS */ 589 590 os_free(conf); 591 } 592 593 594 /** 595 * hostapd_maclist_found - Find a MAC address from a list 596 * @list: MAC address list 597 * @num_entries: Number of addresses in the list 598 * @addr: Address to search for 599 * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed 600 * Returns: 1 if address is in the list or 0 if not. 601 * 602 * Perform a binary search for given MAC address from a pre-sorted list. 603 */ 604 int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries, 605 const u8 *addr, int *vlan_id) 606 { 607 int start, end, middle, res; 608 609 start = 0; 610 end = num_entries - 1; 611 612 while (start <= end) { 613 middle = (start + end) / 2; 614 res = os_memcmp(list[middle].addr, addr, ETH_ALEN); 615 if (res == 0) { 616 if (vlan_id) 617 *vlan_id = list[middle].vlan_id; 618 return 1; 619 } 620 if (res < 0) 621 start = middle + 1; 622 else 623 end = middle - 1; 624 } 625 626 return 0; 627 } 628 629 630 int hostapd_rate_found(int *list, int rate) 631 { 632 int i; 633 634 if (list == NULL) 635 return 0; 636 637 for (i = 0; list[i] >= 0; i++) 638 if (list[i] == rate) 639 return 1; 640 641 return 0; 642 } 643 644 645 int hostapd_vlan_id_valid(struct hostapd_vlan *vlan, int vlan_id) 646 { 647 struct hostapd_vlan *v = vlan; 648 while (v) { 649 if (v->vlan_id == vlan_id || v->vlan_id == VLAN_ID_WILDCARD) 650 return 1; 651 v = v->next; 652 } 653 return 0; 654 } 655 656 657 const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id) 658 { 659 struct hostapd_vlan *v = vlan; 660 while (v) { 661 if (v->vlan_id == vlan_id) 662 return v->ifname; 663 v = v->next; 664 } 665 return NULL; 666 } 667 668 669 const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf, 670 const u8 *addr, const u8 *p2p_dev_addr, 671 const u8 *prev_psk) 672 { 673 struct hostapd_wpa_psk *psk; 674 int next_ok = prev_psk == NULL; 675 676 if (p2p_dev_addr && !is_zero_ether_addr(p2p_dev_addr)) { 677 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR 678 " p2p_dev_addr=" MACSTR " prev_psk=%p", 679 MAC2STR(addr), MAC2STR(p2p_dev_addr), prev_psk); 680 addr = NULL; /* Use P2P Device Address for matching */ 681 } else { 682 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR 683 " prev_psk=%p", 684 MAC2STR(addr), prev_psk); 685 } 686 687 for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) { 688 if (next_ok && 689 (psk->group || 690 (addr && os_memcmp(psk->addr, addr, ETH_ALEN) == 0) || 691 (!addr && p2p_dev_addr && 692 os_memcmp(psk->p2p_dev_addr, p2p_dev_addr, ETH_ALEN) == 693 0))) 694 return psk->psk; 695 696 if (psk->psk == prev_psk) 697 next_ok = 1; 698 } 699 700 return NULL; 701 } 702 703 704 static int hostapd_config_check_bss(struct hostapd_bss_config *bss, 705 struct hostapd_config *conf, 706 int full_config) 707 { 708 if (full_config && bss->ieee802_1x && !bss->eap_server && 709 !bss->radius->auth_servers) { 710 wpa_printf(MSG_ERROR, "Invalid IEEE 802.1X configuration (no " 711 "EAP authenticator configured)."); 712 return -1; 713 } 714 715 if (bss->wpa) { 716 int wep, i; 717 718 wep = bss->default_wep_key_len > 0 || 719 bss->individual_wep_key_len > 0; 720 for (i = 0; i < NUM_WEP_KEYS; i++) { 721 if (bss->ssid.wep.keys_set) { 722 wep = 1; 723 break; 724 } 725 } 726 727 if (wep) { 728 wpa_printf(MSG_ERROR, "WEP configuration in a WPA network is not supported"); 729 return -1; 730 } 731 } 732 733 if (full_config && bss->wpa && 734 bss->wpa_psk_radius != PSK_RADIUS_IGNORED && 735 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) { 736 wpa_printf(MSG_ERROR, "WPA-PSK using RADIUS enabled, but no " 737 "RADIUS checking (macaddr_acl=2) enabled."); 738 return -1; 739 } 740 741 if (full_config && bss->wpa && (bss->wpa_key_mgmt & WPA_KEY_MGMT_PSK) && 742 bss->ssid.wpa_psk == NULL && bss->ssid.wpa_passphrase == NULL && 743 bss->ssid.wpa_psk_file == NULL && 744 (bss->wpa_psk_radius != PSK_RADIUS_REQUIRED || 745 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH)) { 746 wpa_printf(MSG_ERROR, "WPA-PSK enabled, but PSK or passphrase " 747 "is not configured."); 748 return -1; 749 } 750 751 if (full_config && hostapd_mac_comp_empty(bss->bssid) != 0) { 752 size_t i; 753 754 for (i = 0; i < conf->num_bss; i++) { 755 if (conf->bss[i] != bss && 756 (hostapd_mac_comp(conf->bss[i]->bssid, 757 bss->bssid) == 0)) { 758 wpa_printf(MSG_ERROR, "Duplicate BSSID " MACSTR 759 " on interface '%s' and '%s'.", 760 MAC2STR(bss->bssid), 761 conf->bss[i]->iface, bss->iface); 762 return -1; 763 } 764 } 765 } 766 767 #ifdef CONFIG_IEEE80211R 768 if (full_config && wpa_key_mgmt_ft(bss->wpa_key_mgmt) && 769 (bss->nas_identifier == NULL || 770 os_strlen(bss->nas_identifier) < 1 || 771 os_strlen(bss->nas_identifier) > FT_R0KH_ID_MAX_LEN)) { 772 wpa_printf(MSG_ERROR, "FT (IEEE 802.11r) requires " 773 "nas_identifier to be configured as a 1..48 octet " 774 "string"); 775 return -1; 776 } 777 #endif /* CONFIG_IEEE80211R */ 778 779 #ifdef CONFIG_IEEE80211N 780 if (full_config && conf->ieee80211n && 781 conf->hw_mode == HOSTAPD_MODE_IEEE80211B) { 782 bss->disable_11n = 1; 783 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) in 11b mode is not " 784 "allowed, disabling HT capabilities"); 785 } 786 787 if (full_config && conf->ieee80211n && 788 bss->ssid.security_policy == SECURITY_STATIC_WEP) { 789 bss->disable_11n = 1; 790 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WEP is not " 791 "allowed, disabling HT capabilities"); 792 } 793 794 if (full_config && conf->ieee80211n && bss->wpa && 795 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) && 796 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | 797 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256))) 798 { 799 bss->disable_11n = 1; 800 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WPA/WPA2 " 801 "requires CCMP/GCMP to be enabled, disabling HT " 802 "capabilities"); 803 } 804 #endif /* CONFIG_IEEE80211N */ 805 806 #ifdef CONFIG_WPS 807 if (full_config && bss->wps_state && bss->ignore_broadcast_ssid) { 808 wpa_printf(MSG_INFO, "WPS: ignore_broadcast_ssid " 809 "configuration forced WPS to be disabled"); 810 bss->wps_state = 0; 811 } 812 813 if (full_config && bss->wps_state && 814 bss->ssid.wep.keys_set && bss->wpa == 0) { 815 wpa_printf(MSG_INFO, "WPS: WEP configuration forced WPS to be " 816 "disabled"); 817 bss->wps_state = 0; 818 } 819 820 if (full_config && bss->wps_state && bss->wpa && 821 (!(bss->wpa & 2) || 822 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)))) { 823 wpa_printf(MSG_INFO, "WPS: WPA/TKIP configuration without " 824 "WPA2/CCMP/GCMP forced WPS to be disabled"); 825 bss->wps_state = 0; 826 } 827 #endif /* CONFIG_WPS */ 828 829 #ifdef CONFIG_HS20 830 if (full_config && bss->hs20 && 831 (!(bss->wpa & 2) || 832 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | 833 WPA_CIPHER_CCMP_256 | 834 WPA_CIPHER_GCMP_256)))) { 835 wpa_printf(MSG_ERROR, "HS 2.0: WPA2-Enterprise/CCMP " 836 "configuration is required for Hotspot 2.0 " 837 "functionality"); 838 return -1; 839 } 840 #endif /* CONFIG_HS20 */ 841 842 return 0; 843 } 844 845 846 static int hostapd_config_check_cw(struct hostapd_config *conf, int queue) 847 { 848 int tx_cwmin = conf->tx_queue[queue].cwmin; 849 int tx_cwmax = conf->tx_queue[queue].cwmax; 850 int ac_cwmin = conf->wmm_ac_params[queue].cwmin; 851 int ac_cwmax = conf->wmm_ac_params[queue].cwmax; 852 853 if (tx_cwmin > tx_cwmax) { 854 wpa_printf(MSG_ERROR, 855 "Invalid TX queue cwMin/cwMax values. cwMin(%d) greater than cwMax(%d)", 856 tx_cwmin, tx_cwmax); 857 return -1; 858 } 859 if (ac_cwmin > ac_cwmax) { 860 wpa_printf(MSG_ERROR, 861 "Invalid WMM AC cwMin/cwMax values. cwMin(%d) greater than cwMax(%d)", 862 ac_cwmin, ac_cwmax); 863 return -1; 864 } 865 return 0; 866 } 867 868 869 int hostapd_config_check(struct hostapd_config *conf, int full_config) 870 { 871 size_t i; 872 873 if (full_config && conf->ieee80211d && 874 (!conf->country[0] || !conf->country[1])) { 875 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11d without " 876 "setting the country_code"); 877 return -1; 878 } 879 880 if (full_config && conf->ieee80211h && !conf->ieee80211d) { 881 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11h without " 882 "IEEE 802.11d enabled"); 883 return -1; 884 } 885 886 if (full_config && conf->local_pwr_constraint != -1 && 887 !conf->ieee80211d) { 888 wpa_printf(MSG_ERROR, "Cannot add Power Constraint element without Country element"); 889 return -1; 890 } 891 892 if (full_config && conf->spectrum_mgmt_required && 893 conf->local_pwr_constraint == -1) { 894 wpa_printf(MSG_ERROR, "Cannot set Spectrum Management bit without Country and Power Constraint elements"); 895 return -1; 896 } 897 898 for (i = 0; i < NUM_TX_QUEUES; i++) { 899 if (hostapd_config_check_cw(conf, i)) 900 return -1; 901 } 902 903 for (i = 0; i < conf->num_bss; i++) { 904 if (hostapd_config_check_bss(conf->bss[i], conf, full_config)) 905 return -1; 906 } 907 908 return 0; 909 } 910 911 912 void hostapd_set_security_params(struct hostapd_bss_config *bss, 913 int full_config) 914 { 915 if (bss->individual_wep_key_len == 0) { 916 /* individual keys are not use; can use key idx0 for 917 * broadcast keys */ 918 bss->broadcast_key_idx_min = 0; 919 } 920 921 if ((bss->wpa & 2) && bss->rsn_pairwise == 0) 922 bss->rsn_pairwise = bss->wpa_pairwise; 923 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, bss->wpa_pairwise, 924 bss->rsn_pairwise); 925 926 if (full_config) { 927 bss->radius->auth_server = bss->radius->auth_servers; 928 bss->radius->acct_server = bss->radius->acct_servers; 929 } 930 931 if (bss->wpa && bss->ieee802_1x) { 932 bss->ssid.security_policy = SECURITY_WPA; 933 } else if (bss->wpa) { 934 bss->ssid.security_policy = SECURITY_WPA_PSK; 935 } else if (bss->ieee802_1x) { 936 int cipher = WPA_CIPHER_NONE; 937 bss->ssid.security_policy = SECURITY_IEEE_802_1X; 938 bss->ssid.wep.default_len = bss->default_wep_key_len; 939 if (full_config && bss->default_wep_key_len) { 940 cipher = bss->default_wep_key_len >= 13 ? 941 WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40; 942 } else if (full_config && bss->ssid.wep.keys_set) { 943 if (bss->ssid.wep.len[0] >= 13) 944 cipher = WPA_CIPHER_WEP104; 945 else 946 cipher = WPA_CIPHER_WEP40; 947 } 948 bss->wpa_group = cipher; 949 bss->wpa_pairwise = cipher; 950 bss->rsn_pairwise = cipher; 951 if (full_config) 952 bss->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA; 953 } else if (bss->ssid.wep.keys_set) { 954 int cipher = WPA_CIPHER_WEP40; 955 if (bss->ssid.wep.len[0] >= 13) 956 cipher = WPA_CIPHER_WEP104; 957 bss->ssid.security_policy = SECURITY_STATIC_WEP; 958 bss->wpa_group = cipher; 959 bss->wpa_pairwise = cipher; 960 bss->rsn_pairwise = cipher; 961 if (full_config) 962 bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE; 963 } else if (bss->osen) { 964 bss->ssid.security_policy = SECURITY_OSEN; 965 bss->wpa_group = WPA_CIPHER_CCMP; 966 bss->wpa_pairwise = 0; 967 bss->rsn_pairwise = WPA_CIPHER_CCMP; 968 } else { 969 bss->ssid.security_policy = SECURITY_PLAINTEXT; 970 bss->wpa_group = WPA_CIPHER_NONE; 971 bss->wpa_pairwise = WPA_CIPHER_NONE; 972 bss->rsn_pairwise = WPA_CIPHER_NONE; 973 if (full_config) 974 bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE; 975 } 976 } 977
