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 dl_list_init(&bss->anqp_elem); 42 43 bss->logger_syslog_level = HOSTAPD_LEVEL_INFO; 44 bss->logger_stdout_level = HOSTAPD_LEVEL_INFO; 45 bss->logger_syslog = (unsigned int) -1; 46 bss->logger_stdout = (unsigned int) -1; 47 48 bss->auth_algs = WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED; 49 50 bss->wep_rekeying_period = 300; 51 /* use key0 in individual key and key1 in broadcast key */ 52 bss->broadcast_key_idx_min = 1; 53 bss->broadcast_key_idx_max = 2; 54 bss->eap_reauth_period = 3600; 55 56 bss->wpa_group_rekey = 600; 57 bss->wpa_gmk_rekey = 86400; 58 bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK; 59 bss->wpa_pairwise = WPA_CIPHER_TKIP; 60 bss->wpa_group = WPA_CIPHER_TKIP; 61 bss->rsn_pairwise = 0; 62 63 bss->max_num_sta = MAX_STA_COUNT; 64 65 bss->dtim_period = 2; 66 67 bss->radius_server_auth_port = 1812; 68 bss->eap_sim_db_timeout = 1; 69 bss->ap_max_inactivity = AP_MAX_INACTIVITY; 70 bss->eapol_version = EAPOL_VERSION; 71 72 bss->max_listen_interval = 65535; 73 74 bss->pwd_group = 19; /* ECC: GF(p=256) */ 75 76 #ifdef CONFIG_IEEE80211W 77 bss->assoc_sa_query_max_timeout = 1000; 78 bss->assoc_sa_query_retry_timeout = 201; 79 bss->group_mgmt_cipher = WPA_CIPHER_AES_128_CMAC; 80 #endif /* CONFIG_IEEE80211W */ 81 #ifdef EAP_SERVER_FAST 82 /* both anonymous and authenticated provisioning */ 83 bss->eap_fast_prov = 3; 84 bss->pac_key_lifetime = 7 * 24 * 60 * 60; 85 bss->pac_key_refresh_time = 1 * 24 * 60 * 60; 86 #endif /* EAP_SERVER_FAST */ 87 88 /* Set to -1 as defaults depends on HT in setup */ 89 bss->wmm_enabled = -1; 90 91 #ifdef CONFIG_IEEE80211R 92 bss->ft_over_ds = 1; 93 #endif /* CONFIG_IEEE80211R */ 94 95 bss->radius_das_time_window = 300; 96 97 bss->sae_anti_clogging_threshold = 5; 98 } 99 100 101 struct hostapd_config * hostapd_config_defaults(void) 102 { 103 #define ecw2cw(ecw) ((1 << (ecw)) - 1) 104 105 struct hostapd_config *conf; 106 struct hostapd_bss_config *bss; 107 const int aCWmin = 4, aCWmax = 10; 108 const struct hostapd_wmm_ac_params ac_bk = 109 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */ 110 const struct hostapd_wmm_ac_params ac_be = 111 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */ 112 const struct hostapd_wmm_ac_params ac_vi = /* video traffic */ 113 { aCWmin - 1, aCWmin, 2, 3008 / 32, 0 }; 114 const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */ 115 { aCWmin - 2, aCWmin - 1, 2, 1504 / 32, 0 }; 116 const struct hostapd_tx_queue_params txq_bk = 117 { 7, ecw2cw(aCWmin), ecw2cw(aCWmax), 0 }; 118 const struct hostapd_tx_queue_params txq_be = 119 { 3, ecw2cw(aCWmin), 4 * (ecw2cw(aCWmin) + 1) - 1, 0}; 120 const struct hostapd_tx_queue_params txq_vi = 121 { 1, (ecw2cw(aCWmin) + 1) / 2 - 1, ecw2cw(aCWmin), 30}; 122 const struct hostapd_tx_queue_params txq_vo = 123 { 1, (ecw2cw(aCWmin) + 1) / 4 - 1, 124 (ecw2cw(aCWmin) + 1) / 2 - 1, 15}; 125 126 #undef ecw2cw 127 128 conf = os_zalloc(sizeof(*conf)); 129 bss = os_zalloc(sizeof(*bss)); 130 if (conf == NULL || bss == NULL) { 131 wpa_printf(MSG_ERROR, "Failed to allocate memory for " 132 "configuration data."); 133 os_free(conf); 134 os_free(bss); 135 return NULL; 136 } 137 conf->bss = os_calloc(1, sizeof(struct hostapd_bss_config *)); 138 if (conf->bss == NULL) { 139 os_free(conf); 140 os_free(bss); 141 return NULL; 142 } 143 conf->bss[0] = bss; 144 145 bss->radius = os_zalloc(sizeof(*bss->radius)); 146 if (bss->radius == NULL) { 147 os_free(conf->bss); 148 os_free(conf); 149 os_free(bss); 150 return NULL; 151 } 152 153 hostapd_config_defaults_bss(bss); 154 155 conf->num_bss = 1; 156 157 conf->beacon_int = 100; 158 conf->rts_threshold = -1; /* use driver default: 2347 */ 159 conf->fragm_threshold = -1; /* user driver default: 2346 */ 160 conf->send_probe_response = 1; 161 /* Set to invalid value means do not add Power Constraint IE */ 162 conf->local_pwr_constraint = -1; 163 164 conf->wmm_ac_params[0] = ac_be; 165 conf->wmm_ac_params[1] = ac_bk; 166 conf->wmm_ac_params[2] = ac_vi; 167 conf->wmm_ac_params[3] = ac_vo; 168 169 conf->tx_queue[0] = txq_vo; 170 conf->tx_queue[1] = txq_vi; 171 conf->tx_queue[2] = txq_be; 172 conf->tx_queue[3] = txq_bk; 173 174 conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED; 175 176 conf->ap_table_max_size = 255; 177 conf->ap_table_expiration_time = 60; 178 conf->track_sta_max_age = 180; 179 180 #ifdef CONFIG_TESTING_OPTIONS 181 conf->ignore_probe_probability = 0.0; 182 conf->ignore_auth_probability = 0.0; 183 conf->ignore_assoc_probability = 0.0; 184 conf->ignore_reassoc_probability = 0.0; 185 conf->corrupt_gtk_rekey_mic_probability = 0.0; 186 conf->ecsa_ie_only = 0; 187 #endif /* CONFIG_TESTING_OPTIONS */ 188 189 conf->acs = 0; 190 conf->acs_ch_list.num = 0; 191 #ifdef CONFIG_ACS 192 conf->acs_num_scans = 5; 193 #endif /* CONFIG_ACS */ 194 195 return conf; 196 } 197 198 199 int hostapd_mac_comp(const void *a, const void *b) 200 { 201 return os_memcmp(a, b, 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 static void hostapd_config_free_anqp_elem(struct hostapd_bss_config *conf) 411 { 412 struct anqp_element *elem; 413 414 while ((elem = dl_list_first(&conf->anqp_elem, struct anqp_element, 415 list))) { 416 dl_list_del(&elem->list); 417 wpabuf_free(elem->payload); 418 os_free(elem); 419 } 420 } 421 422 423 void hostapd_config_free_bss(struct hostapd_bss_config *conf) 424 { 425 struct hostapd_eap_user *user, *prev_user; 426 427 if (conf == NULL) 428 return; 429 430 hostapd_config_clear_wpa_psk(&conf->ssid.wpa_psk); 431 432 str_clear_free(conf->ssid.wpa_passphrase); 433 os_free(conf->ssid.wpa_psk_file); 434 hostapd_config_free_wep(&conf->ssid.wep); 435 #ifdef CONFIG_FULL_DYNAMIC_VLAN 436 os_free(conf->ssid.vlan_tagged_interface); 437 #endif /* CONFIG_FULL_DYNAMIC_VLAN */ 438 439 user = conf->eap_user; 440 while (user) { 441 prev_user = user; 442 user = user->next; 443 hostapd_config_free_eap_user(prev_user); 444 } 445 os_free(conf->eap_user_sqlite); 446 447 os_free(conf->eap_req_id_text); 448 os_free(conf->erp_domain); 449 os_free(conf->accept_mac); 450 os_free(conf->deny_mac); 451 os_free(conf->nas_identifier); 452 if (conf->radius) { 453 hostapd_config_free_radius(conf->radius->auth_servers, 454 conf->radius->num_auth_servers); 455 hostapd_config_free_radius(conf->radius->acct_servers, 456 conf->radius->num_acct_servers); 457 } 458 hostapd_config_free_radius_attr(conf->radius_auth_req_attr); 459 hostapd_config_free_radius_attr(conf->radius_acct_req_attr); 460 os_free(conf->rsn_preauth_interfaces); 461 os_free(conf->ctrl_interface); 462 os_free(conf->ca_cert); 463 os_free(conf->server_cert); 464 os_free(conf->private_key); 465 os_free(conf->private_key_passwd); 466 os_free(conf->ocsp_stapling_response); 467 os_free(conf->ocsp_stapling_response_multi); 468 os_free(conf->dh_file); 469 os_free(conf->openssl_ciphers); 470 os_free(conf->pac_opaque_encr_key); 471 os_free(conf->eap_fast_a_id); 472 os_free(conf->eap_fast_a_id_info); 473 os_free(conf->eap_sim_db); 474 os_free(conf->radius_server_clients); 475 os_free(conf->radius); 476 os_free(conf->radius_das_shared_secret); 477 hostapd_config_free_vlan(conf); 478 os_free(conf->time_zone); 479 480 #ifdef CONFIG_IEEE80211R 481 { 482 struct ft_remote_r0kh *r0kh, *r0kh_prev; 483 struct ft_remote_r1kh *r1kh, *r1kh_prev; 484 485 r0kh = conf->r0kh_list; 486 conf->r0kh_list = NULL; 487 while (r0kh) { 488 r0kh_prev = r0kh; 489 r0kh = r0kh->next; 490 os_free(r0kh_prev); 491 } 492 493 r1kh = conf->r1kh_list; 494 conf->r1kh_list = NULL; 495 while (r1kh) { 496 r1kh_prev = r1kh; 497 r1kh = r1kh->next; 498 os_free(r1kh_prev); 499 } 500 } 501 #endif /* CONFIG_IEEE80211R */ 502 503 #ifdef CONFIG_WPS 504 os_free(conf->wps_pin_requests); 505 os_free(conf->device_name); 506 os_free(conf->manufacturer); 507 os_free(conf->model_name); 508 os_free(conf->model_number); 509 os_free(conf->serial_number); 510 os_free(conf->config_methods); 511 os_free(conf->ap_pin); 512 os_free(conf->extra_cred); 513 os_free(conf->ap_settings); 514 os_free(conf->upnp_iface); 515 os_free(conf->friendly_name); 516 os_free(conf->manufacturer_url); 517 os_free(conf->model_description); 518 os_free(conf->model_url); 519 os_free(conf->upc); 520 { 521 unsigned int i; 522 523 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) 524 wpabuf_free(conf->wps_vendor_ext[i]); 525 } 526 wpabuf_free(conf->wps_nfc_dh_pubkey); 527 wpabuf_free(conf->wps_nfc_dh_privkey); 528 wpabuf_free(conf->wps_nfc_dev_pw); 529 #endif /* CONFIG_WPS */ 530 531 os_free(conf->roaming_consortium); 532 os_free(conf->venue_name); 533 os_free(conf->nai_realm_data); 534 os_free(conf->network_auth_type); 535 os_free(conf->anqp_3gpp_cell_net); 536 os_free(conf->domain_name); 537 hostapd_config_free_anqp_elem(conf); 538 539 #ifdef CONFIG_RADIUS_TEST 540 os_free(conf->dump_msk_file); 541 #endif /* CONFIG_RADIUS_TEST */ 542 543 #ifdef CONFIG_HS20 544 os_free(conf->hs20_oper_friendly_name); 545 os_free(conf->hs20_wan_metrics); 546 os_free(conf->hs20_connection_capability); 547 os_free(conf->hs20_operating_class); 548 os_free(conf->hs20_icons); 549 if (conf->hs20_osu_providers) { 550 size_t i; 551 for (i = 0; i < conf->hs20_osu_providers_count; i++) { 552 struct hs20_osu_provider *p; 553 size_t j; 554 p = &conf->hs20_osu_providers[i]; 555 os_free(p->friendly_name); 556 os_free(p->server_uri); 557 os_free(p->method_list); 558 for (j = 0; j < p->icons_count; j++) 559 os_free(p->icons[j]); 560 os_free(p->icons); 561 os_free(p->osu_nai); 562 os_free(p->service_desc); 563 } 564 os_free(conf->hs20_osu_providers); 565 } 566 os_free(conf->subscr_remediation_url); 567 #endif /* CONFIG_HS20 */ 568 569 wpabuf_free(conf->vendor_elements); 570 571 os_free(conf->sae_groups); 572 573 os_free(conf->wowlan_triggers); 574 575 os_free(conf->server_id); 576 577 #ifdef CONFIG_TESTING_OPTIONS 578 wpabuf_free(conf->own_ie_override); 579 #endif /* CONFIG_TESTING_OPTIONS */ 580 581 os_free(conf->no_probe_resp_if_seen_on); 582 os_free(conf->no_auth_if_seen_on); 583 584 os_free(conf); 585 } 586 587 588 /** 589 * hostapd_config_free - Free hostapd configuration 590 * @conf: Configuration data from hostapd_config_read(). 591 */ 592 void hostapd_config_free(struct hostapd_config *conf) 593 { 594 size_t i; 595 596 if (conf == NULL) 597 return; 598 599 for (i = 0; i < conf->num_bss; i++) 600 hostapd_config_free_bss(conf->bss[i]); 601 os_free(conf->bss); 602 os_free(conf->supported_rates); 603 os_free(conf->basic_rates); 604 os_free(conf->acs_ch_list.range); 605 os_free(conf->driver_params); 606 #ifdef CONFIG_ACS 607 os_free(conf->acs_chan_bias); 608 #endif /* CONFIG_ACS */ 609 610 os_free(conf); 611 } 612 613 614 /** 615 * hostapd_maclist_found - Find a MAC address from a list 616 * @list: MAC address list 617 * @num_entries: Number of addresses in the list 618 * @addr: Address to search for 619 * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed 620 * Returns: 1 if address is in the list or 0 if not. 621 * 622 * Perform a binary search for given MAC address from a pre-sorted list. 623 */ 624 int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries, 625 const u8 *addr, struct vlan_description *vlan_id) 626 { 627 int start, end, middle, res; 628 629 start = 0; 630 end = num_entries - 1; 631 632 while (start <= end) { 633 middle = (start + end) / 2; 634 res = os_memcmp(list[middle].addr, addr, ETH_ALEN); 635 if (res == 0) { 636 if (vlan_id) 637 *vlan_id = list[middle].vlan_id; 638 return 1; 639 } 640 if (res < 0) 641 start = middle + 1; 642 else 643 end = middle - 1; 644 } 645 646 return 0; 647 } 648 649 650 int hostapd_rate_found(int *list, int rate) 651 { 652 int i; 653 654 if (list == NULL) 655 return 0; 656 657 for (i = 0; list[i] >= 0; i++) 658 if (list[i] == rate) 659 return 1; 660 661 return 0; 662 } 663 664 665 int hostapd_vlan_valid(struct hostapd_vlan *vlan, 666 struct vlan_description *vlan_desc) 667 { 668 struct hostapd_vlan *v = vlan; 669 int i; 670 671 if (!vlan_desc->notempty || vlan_desc->untagged < 0 || 672 vlan_desc->untagged > MAX_VLAN_ID) 673 return 0; 674 for (i = 0; i < MAX_NUM_TAGGED_VLAN; i++) { 675 if (vlan_desc->tagged[i] < 0 || 676 vlan_desc->tagged[i] > MAX_VLAN_ID) 677 return 0; 678 } 679 if (!vlan_desc->untagged && !vlan_desc->tagged[0]) 680 return 0; 681 682 while (v) { 683 if (!vlan_compare(&v->vlan_desc, vlan_desc) || 684 v->vlan_id == VLAN_ID_WILDCARD) 685 return 1; 686 v = v->next; 687 } 688 return 0; 689 } 690 691 692 const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id) 693 { 694 struct hostapd_vlan *v = vlan; 695 while (v) { 696 if (v->vlan_id == vlan_id) 697 return v->ifname; 698 v = v->next; 699 } 700 return NULL; 701 } 702 703 704 const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf, 705 const u8 *addr, const u8 *p2p_dev_addr, 706 const u8 *prev_psk) 707 { 708 struct hostapd_wpa_psk *psk; 709 int next_ok = prev_psk == NULL; 710 711 if (p2p_dev_addr && !is_zero_ether_addr(p2p_dev_addr)) { 712 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR 713 " p2p_dev_addr=" MACSTR " prev_psk=%p", 714 MAC2STR(addr), MAC2STR(p2p_dev_addr), prev_psk); 715 addr = NULL; /* Use P2P Device Address for matching */ 716 } else { 717 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR 718 " prev_psk=%p", 719 MAC2STR(addr), prev_psk); 720 } 721 722 for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) { 723 if (next_ok && 724 (psk->group || 725 (addr && os_memcmp(psk->addr, addr, ETH_ALEN) == 0) || 726 (!addr && p2p_dev_addr && 727 os_memcmp(psk->p2p_dev_addr, p2p_dev_addr, ETH_ALEN) == 728 0))) 729 return psk->psk; 730 731 if (psk->psk == prev_psk) 732 next_ok = 1; 733 } 734 735 return NULL; 736 } 737 738 739 static int hostapd_config_check_bss(struct hostapd_bss_config *bss, 740 struct hostapd_config *conf, 741 int full_config) 742 { 743 if (full_config && bss->ieee802_1x && !bss->eap_server && 744 !bss->radius->auth_servers) { 745 wpa_printf(MSG_ERROR, "Invalid IEEE 802.1X configuration (no " 746 "EAP authenticator configured)."); 747 return -1; 748 } 749 750 if (bss->wpa) { 751 int wep, i; 752 753 wep = bss->default_wep_key_len > 0 || 754 bss->individual_wep_key_len > 0; 755 for (i = 0; i < NUM_WEP_KEYS; i++) { 756 if (bss->ssid.wep.keys_set) { 757 wep = 1; 758 break; 759 } 760 } 761 762 if (wep) { 763 wpa_printf(MSG_ERROR, "WEP configuration in a WPA network is not supported"); 764 return -1; 765 } 766 } 767 768 if (full_config && bss->wpa && 769 bss->wpa_psk_radius != PSK_RADIUS_IGNORED && 770 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) { 771 wpa_printf(MSG_ERROR, "WPA-PSK using RADIUS enabled, but no " 772 "RADIUS checking (macaddr_acl=2) enabled."); 773 return -1; 774 } 775 776 if (full_config && bss->wpa && (bss->wpa_key_mgmt & WPA_KEY_MGMT_PSK) && 777 bss->ssid.wpa_psk == NULL && bss->ssid.wpa_passphrase == NULL && 778 bss->ssid.wpa_psk_file == NULL && 779 (bss->wpa_psk_radius != PSK_RADIUS_REQUIRED || 780 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH)) { 781 wpa_printf(MSG_ERROR, "WPA-PSK enabled, but PSK or passphrase " 782 "is not configured."); 783 return -1; 784 } 785 786 if (full_config && !is_zero_ether_addr(bss->bssid)) { 787 size_t i; 788 789 for (i = 0; i < conf->num_bss; i++) { 790 if (conf->bss[i] != bss && 791 (hostapd_mac_comp(conf->bss[i]->bssid, 792 bss->bssid) == 0)) { 793 wpa_printf(MSG_ERROR, "Duplicate BSSID " MACSTR 794 " on interface '%s' and '%s'.", 795 MAC2STR(bss->bssid), 796 conf->bss[i]->iface, bss->iface); 797 return -1; 798 } 799 } 800 } 801 802 #ifdef CONFIG_IEEE80211R 803 if (full_config && wpa_key_mgmt_ft(bss->wpa_key_mgmt) && 804 (bss->nas_identifier == NULL || 805 os_strlen(bss->nas_identifier) < 1 || 806 os_strlen(bss->nas_identifier) > FT_R0KH_ID_MAX_LEN)) { 807 wpa_printf(MSG_ERROR, "FT (IEEE 802.11r) requires " 808 "nas_identifier to be configured as a 1..48 octet " 809 "string"); 810 return -1; 811 } 812 #endif /* CONFIG_IEEE80211R */ 813 814 #ifdef CONFIG_IEEE80211N 815 if (full_config && conf->ieee80211n && 816 conf->hw_mode == HOSTAPD_MODE_IEEE80211B) { 817 bss->disable_11n = 1; 818 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) in 11b mode is not " 819 "allowed, disabling HT capabilities"); 820 } 821 822 if (full_config && conf->ieee80211n && 823 bss->ssid.security_policy == SECURITY_STATIC_WEP) { 824 bss->disable_11n = 1; 825 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WEP is not " 826 "allowed, disabling HT capabilities"); 827 } 828 829 if (full_config && conf->ieee80211n && bss->wpa && 830 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) && 831 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | 832 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256))) 833 { 834 bss->disable_11n = 1; 835 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WPA/WPA2 " 836 "requires CCMP/GCMP to be enabled, disabling HT " 837 "capabilities"); 838 } 839 #endif /* CONFIG_IEEE80211N */ 840 841 #ifdef CONFIG_WPS 842 if (full_config && bss->wps_state && bss->ignore_broadcast_ssid) { 843 wpa_printf(MSG_INFO, "WPS: ignore_broadcast_ssid " 844 "configuration forced WPS to be disabled"); 845 bss->wps_state = 0; 846 } 847 848 if (full_config && bss->wps_state && 849 bss->ssid.wep.keys_set && bss->wpa == 0) { 850 wpa_printf(MSG_INFO, "WPS: WEP configuration forced WPS to be " 851 "disabled"); 852 bss->wps_state = 0; 853 } 854 855 if (full_config && bss->wps_state && bss->wpa && 856 (!(bss->wpa & 2) || 857 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)))) { 858 wpa_printf(MSG_INFO, "WPS: WPA/TKIP configuration without " 859 "WPA2/CCMP/GCMP forced WPS to be disabled"); 860 bss->wps_state = 0; 861 } 862 #endif /* CONFIG_WPS */ 863 864 #ifdef CONFIG_HS20 865 if (full_config && bss->hs20 && 866 (!(bss->wpa & 2) || 867 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | 868 WPA_CIPHER_CCMP_256 | 869 WPA_CIPHER_GCMP_256)))) { 870 wpa_printf(MSG_ERROR, "HS 2.0: WPA2-Enterprise/CCMP " 871 "configuration is required for Hotspot 2.0 " 872 "functionality"); 873 return -1; 874 } 875 #endif /* CONFIG_HS20 */ 876 877 #ifdef CONFIG_MBO 878 if (full_config && bss->mbo_enabled && (bss->wpa & 2) && 879 bss->ieee80211w == NO_MGMT_FRAME_PROTECTION) { 880 wpa_printf(MSG_ERROR, 881 "MBO: PMF needs to be enabled whenever using WPA2 with MBO"); 882 return -1; 883 } 884 #endif /* CONFIG_MBO */ 885 886 return 0; 887 } 888 889 890 static int hostapd_config_check_cw(struct hostapd_config *conf, int queue) 891 { 892 int tx_cwmin = conf->tx_queue[queue].cwmin; 893 int tx_cwmax = conf->tx_queue[queue].cwmax; 894 int ac_cwmin = conf->wmm_ac_params[queue].cwmin; 895 int ac_cwmax = conf->wmm_ac_params[queue].cwmax; 896 897 if (tx_cwmin > tx_cwmax) { 898 wpa_printf(MSG_ERROR, 899 "Invalid TX queue cwMin/cwMax values. cwMin(%d) greater than cwMax(%d)", 900 tx_cwmin, tx_cwmax); 901 return -1; 902 } 903 if (ac_cwmin > ac_cwmax) { 904 wpa_printf(MSG_ERROR, 905 "Invalid WMM AC cwMin/cwMax values. cwMin(%d) greater than cwMax(%d)", 906 ac_cwmin, ac_cwmax); 907 return -1; 908 } 909 return 0; 910 } 911 912 913 int hostapd_config_check(struct hostapd_config *conf, int full_config) 914 { 915 size_t i; 916 917 if (full_config && conf->ieee80211d && 918 (!conf->country[0] || !conf->country[1])) { 919 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11d without " 920 "setting the country_code"); 921 return -1; 922 } 923 924 if (full_config && conf->ieee80211h && !conf->ieee80211d) { 925 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11h without " 926 "IEEE 802.11d enabled"); 927 return -1; 928 } 929 930 if (full_config && conf->local_pwr_constraint != -1 && 931 !conf->ieee80211d) { 932 wpa_printf(MSG_ERROR, "Cannot add Power Constraint element without Country element"); 933 return -1; 934 } 935 936 if (full_config && conf->spectrum_mgmt_required && 937 conf->local_pwr_constraint == -1) { 938 wpa_printf(MSG_ERROR, "Cannot set Spectrum Management bit without Country and Power Constraint elements"); 939 return -1; 940 } 941 942 for (i = 0; i < NUM_TX_QUEUES; i++) { 943 if (hostapd_config_check_cw(conf, i)) 944 return -1; 945 } 946 947 for (i = 0; i < conf->num_bss; i++) { 948 if (hostapd_config_check_bss(conf->bss[i], conf, full_config)) 949 return -1; 950 } 951 952 return 0; 953 } 954 955 956 void hostapd_set_security_params(struct hostapd_bss_config *bss, 957 int full_config) 958 { 959 if (bss->individual_wep_key_len == 0) { 960 /* individual keys are not use; can use key idx0 for 961 * broadcast keys */ 962 bss->broadcast_key_idx_min = 0; 963 } 964 965 if ((bss->wpa & 2) && bss->rsn_pairwise == 0) 966 bss->rsn_pairwise = bss->wpa_pairwise; 967 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, bss->wpa_pairwise, 968 bss->rsn_pairwise); 969 970 if (full_config) { 971 bss->radius->auth_server = bss->radius->auth_servers; 972 bss->radius->acct_server = bss->radius->acct_servers; 973 } 974 975 if (bss->wpa && bss->ieee802_1x) { 976 bss->ssid.security_policy = SECURITY_WPA; 977 } else if (bss->wpa) { 978 bss->ssid.security_policy = SECURITY_WPA_PSK; 979 } else if (bss->ieee802_1x) { 980 int cipher = WPA_CIPHER_NONE; 981 bss->ssid.security_policy = SECURITY_IEEE_802_1X; 982 bss->ssid.wep.default_len = bss->default_wep_key_len; 983 if (full_config && bss->default_wep_key_len) { 984 cipher = bss->default_wep_key_len >= 13 ? 985 WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40; 986 } else if (full_config && bss->ssid.wep.keys_set) { 987 if (bss->ssid.wep.len[0] >= 13) 988 cipher = WPA_CIPHER_WEP104; 989 else 990 cipher = WPA_CIPHER_WEP40; 991 } 992 bss->wpa_group = cipher; 993 bss->wpa_pairwise = cipher; 994 bss->rsn_pairwise = cipher; 995 if (full_config) 996 bss->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA; 997 } else if (bss->ssid.wep.keys_set) { 998 int cipher = WPA_CIPHER_WEP40; 999 if (bss->ssid.wep.len[0] >= 13) 1000 cipher = WPA_CIPHER_WEP104; 1001 bss->ssid.security_policy = SECURITY_STATIC_WEP; 1002 bss->wpa_group = cipher; 1003 bss->wpa_pairwise = cipher; 1004 bss->rsn_pairwise = cipher; 1005 if (full_config) 1006 bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE; 1007 } else if (bss->osen) { 1008 bss->ssid.security_policy = SECURITY_OSEN; 1009 bss->wpa_group = WPA_CIPHER_CCMP; 1010 bss->wpa_pairwise = 0; 1011 bss->rsn_pairwise = WPA_CIPHER_CCMP; 1012 } else { 1013 bss->ssid.security_policy = SECURITY_PLAINTEXT; 1014 if (full_config) { 1015 bss->wpa_group = WPA_CIPHER_NONE; 1016 bss->wpa_pairwise = WPA_CIPHER_NONE; 1017 bss->rsn_pairwise = WPA_CIPHER_NONE; 1018 bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE; 1019 } 1020 } 1021 } 1022
