ap_config.c revision fb79edc9df1f20461e90e478363d207348213d35
1/* 2 * hostapd / Configuration helper functions 3 * Copyright (c) 2003-2013, 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 23static 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 39void hostapd_config_defaults_bss(struct hostapd_bss_config *bss) 40{ 41 bss->logger_syslog_level = HOSTAPD_LEVEL_INFO; 42 bss->logger_stdout_level = HOSTAPD_LEVEL_INFO; 43 bss->logger_syslog = (unsigned int) -1; 44 bss->logger_stdout = (unsigned int) -1; 45 46 bss->auth_algs = WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED; 47 48 bss->wep_rekeying_period = 300; 49 /* use key0 in individual key and key1 in broadcast key */ 50 bss->broadcast_key_idx_min = 1; 51 bss->broadcast_key_idx_max = 2; 52 bss->eap_reauth_period = 3600; 53 54 bss->wpa_group_rekey = 600; 55 bss->wpa_gmk_rekey = 86400; 56 bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK; 57 bss->wpa_pairwise = WPA_CIPHER_TKIP; 58 bss->wpa_group = WPA_CIPHER_TKIP; 59 bss->rsn_pairwise = 0; 60 61 bss->max_num_sta = MAX_STA_COUNT; 62 63 bss->dtim_period = 2; 64 65 bss->radius_server_auth_port = 1812; 66 bss->ap_max_inactivity = AP_MAX_INACTIVITY; 67 bss->eapol_version = EAPOL_VERSION; 68 69 bss->max_listen_interval = 65535; 70 71 bss->pwd_group = 19; /* ECC: GF(p=256) */ 72 73#ifdef CONFIG_IEEE80211W 74 bss->assoc_sa_query_max_timeout = 1000; 75 bss->assoc_sa_query_retry_timeout = 201; 76#endif /* CONFIG_IEEE80211W */ 77#ifdef EAP_SERVER_FAST 78 /* both anonymous and authenticated provisioning */ 79 bss->eap_fast_prov = 3; 80 bss->pac_key_lifetime = 7 * 24 * 60 * 60; 81 bss->pac_key_refresh_time = 1 * 24 * 60 * 60; 82#endif /* EAP_SERVER_FAST */ 83 84 /* Set to -1 as defaults depends on HT in setup */ 85 bss->wmm_enabled = -1; 86 87#ifdef CONFIG_IEEE80211R 88 bss->ft_over_ds = 1; 89#endif /* CONFIG_IEEE80211R */ 90 91 bss->radius_das_time_window = 300; 92 93 bss->sae_anti_clogging_threshold = 5; 94} 95 96 97struct hostapd_config * hostapd_config_defaults(void) 98{ 99#define ecw2cw(ecw) ((1 << (ecw)) - 1) 100 101 struct hostapd_config *conf; 102 struct hostapd_bss_config *bss; 103 const int aCWmin = 4, aCWmax = 10; 104 const struct hostapd_wmm_ac_params ac_bk = 105 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */ 106 const struct hostapd_wmm_ac_params ac_be = 107 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */ 108 const struct hostapd_wmm_ac_params ac_vi = /* video traffic */ 109 { aCWmin - 1, aCWmin, 2, 3000 / 32, 0 }; 110 const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */ 111 { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 }; 112 const struct hostapd_tx_queue_params txq_bk = 113 { 7, ecw2cw(aCWmin), ecw2cw(aCWmax), 0 }; 114 const struct hostapd_tx_queue_params txq_be = 115 { 3, ecw2cw(aCWmin), 4 * (ecw2cw(aCWmin) + 1) - 1, 0}; 116 const struct hostapd_tx_queue_params txq_vi = 117 { 1, (ecw2cw(aCWmin) + 1) / 2 - 1, ecw2cw(aCWmin), 30}; 118 const struct hostapd_tx_queue_params txq_vo = 119 { 1, (ecw2cw(aCWmin) + 1) / 4 - 1, 120 (ecw2cw(aCWmin) + 1) / 2 - 1, 15}; 121 122#undef ecw2cw 123 124 conf = os_zalloc(sizeof(*conf)); 125 bss = os_zalloc(sizeof(*bss)); 126 if (conf == NULL || bss == NULL) { 127 wpa_printf(MSG_ERROR, "Failed to allocate memory for " 128 "configuration data."); 129 os_free(conf); 130 os_free(bss); 131 return NULL; 132 } 133 conf->bss = os_calloc(1, sizeof(struct hostapd_bss_config *)); 134 if (conf->bss == NULL) { 135 os_free(conf); 136 os_free(bss); 137 return NULL; 138 } 139 conf->bss[0] = bss; 140 141 bss->radius = os_zalloc(sizeof(*bss->radius)); 142 if (bss->radius == NULL) { 143 os_free(conf); 144 os_free(bss); 145 return NULL; 146 } 147 148 hostapd_config_defaults_bss(bss); 149 150 conf->num_bss = 1; 151 152 conf->beacon_int = 100; 153 conf->rts_threshold = -1; /* use driver default: 2347 */ 154 conf->fragm_threshold = -1; /* user driver default: 2346 */ 155 conf->send_probe_response = 1; 156 157 conf->wmm_ac_params[0] = ac_be; 158 conf->wmm_ac_params[1] = ac_bk; 159 conf->wmm_ac_params[2] = ac_vi; 160 conf->wmm_ac_params[3] = ac_vo; 161 162 conf->tx_queue[0] = txq_vo; 163 conf->tx_queue[1] = txq_vi; 164 conf->tx_queue[2] = txq_be; 165 conf->tx_queue[3] = txq_bk; 166 167 conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED; 168 169 conf->ap_table_max_size = 255; 170 conf->ap_table_expiration_time = 60; 171 172#ifdef CONFIG_TESTING_OPTIONS 173 conf->ignore_probe_probability = 0.0d; 174 conf->ignore_auth_probability = 0.0d; 175 conf->ignore_assoc_probability = 0.0d; 176 conf->ignore_reassoc_probability = 0.0d; 177 conf->corrupt_gtk_rekey_mic_probability = 0.0d; 178#endif /* CONFIG_TESTING_OPTIONS */ 179 180#ifdef CONFIG_ACS 181 conf->acs_num_scans = 5; 182#endif /* CONFIG_ACS */ 183 184 return conf; 185} 186 187 188int hostapd_mac_comp(const void *a, const void *b) 189{ 190 return os_memcmp(a, b, sizeof(macaddr)); 191} 192 193 194int hostapd_mac_comp_empty(const void *a) 195{ 196 macaddr empty = { 0 }; 197 return os_memcmp(a, empty, sizeof(macaddr)); 198} 199 200 201static int hostapd_config_read_wpa_psk(const char *fname, 202 struct hostapd_ssid *ssid) 203{ 204 FILE *f; 205 char buf[128], *pos; 206 int line = 0, ret = 0, len, ok; 207 u8 addr[ETH_ALEN]; 208 struct hostapd_wpa_psk *psk; 209 210 if (!fname) 211 return 0; 212 213 f = fopen(fname, "r"); 214 if (!f) { 215 wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname); 216 return -1; 217 } 218 219 while (fgets(buf, sizeof(buf), f)) { 220 line++; 221 222 if (buf[0] == '#') 223 continue; 224 pos = buf; 225 while (*pos != '\0') { 226 if (*pos == '\n') { 227 *pos = '\0'; 228 break; 229 } 230 pos++; 231 } 232 if (buf[0] == '\0') 233 continue; 234 235 if (hwaddr_aton(buf, addr)) { 236 wpa_printf(MSG_ERROR, "Invalid MAC address '%s' on " 237 "line %d in '%s'", buf, line, fname); 238 ret = -1; 239 break; 240 } 241 242 psk = os_zalloc(sizeof(*psk)); 243 if (psk == NULL) { 244 wpa_printf(MSG_ERROR, "WPA PSK allocation failed"); 245 ret = -1; 246 break; 247 } 248 if (is_zero_ether_addr(addr)) 249 psk->group = 1; 250 else 251 os_memcpy(psk->addr, addr, ETH_ALEN); 252 253 pos = buf + 17; 254 if (*pos == '\0') { 255 wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'", 256 line, fname); 257 os_free(psk); 258 ret = -1; 259 break; 260 } 261 pos++; 262 263 ok = 0; 264 len = os_strlen(pos); 265 if (len == 64 && hexstr2bin(pos, psk->psk, PMK_LEN) == 0) 266 ok = 1; 267 else if (len >= 8 && len < 64) { 268 pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len, 269 4096, psk->psk, PMK_LEN); 270 ok = 1; 271 } 272 if (!ok) { 273 wpa_printf(MSG_ERROR, "Invalid PSK '%s' on line %d in " 274 "'%s'", pos, line, fname); 275 os_free(psk); 276 ret = -1; 277 break; 278 } 279 280 psk->next = ssid->wpa_psk; 281 ssid->wpa_psk = psk; 282 } 283 284 fclose(f); 285 286 return ret; 287} 288 289 290static int hostapd_derive_psk(struct hostapd_ssid *ssid) 291{ 292 ssid->wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk)); 293 if (ssid->wpa_psk == NULL) { 294 wpa_printf(MSG_ERROR, "Unable to alloc space for PSK"); 295 return -1; 296 } 297 wpa_hexdump_ascii(MSG_DEBUG, "SSID", 298 (u8 *) ssid->ssid, ssid->ssid_len); 299 wpa_hexdump_ascii_key(MSG_DEBUG, "PSK (ASCII passphrase)", 300 (u8 *) ssid->wpa_passphrase, 301 os_strlen(ssid->wpa_passphrase)); 302 pbkdf2_sha1(ssid->wpa_passphrase, 303 ssid->ssid, ssid->ssid_len, 304 4096, ssid->wpa_psk->psk, PMK_LEN); 305 wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)", 306 ssid->wpa_psk->psk, PMK_LEN); 307 return 0; 308} 309 310 311int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf) 312{ 313 struct hostapd_ssid *ssid = &conf->ssid; 314 315 if (ssid->wpa_passphrase != NULL) { 316 if (ssid->wpa_psk != NULL) { 317 wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK " 318 "instead of passphrase"); 319 } else { 320 wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on " 321 "passphrase"); 322 if (hostapd_derive_psk(ssid) < 0) 323 return -1; 324 } 325 ssid->wpa_psk->group = 1; 326 } 327 328 if (ssid->wpa_psk_file) { 329 if (hostapd_config_read_wpa_psk(ssid->wpa_psk_file, 330 &conf->ssid)) 331 return -1; 332 } 333 334 return 0; 335} 336 337 338int hostapd_wep_key_cmp(struct hostapd_wep_keys *a, struct hostapd_wep_keys *b) 339{ 340 int i; 341 342 if (a->idx != b->idx || a->default_len != b->default_len) 343 return 1; 344 for (i = 0; i < NUM_WEP_KEYS; i++) 345 if (a->len[i] != b->len[i] || 346 os_memcmp(a->key[i], b->key[i], a->len[i]) != 0) 347 return 1; 348 return 0; 349} 350 351 352static void hostapd_config_free_radius(struct hostapd_radius_server *servers, 353 int num_servers) 354{ 355 int i; 356 357 for (i = 0; i < num_servers; i++) { 358 os_free(servers[i].shared_secret); 359 } 360 os_free(servers); 361} 362 363 364struct hostapd_radius_attr * 365hostapd_config_get_radius_attr(struct hostapd_radius_attr *attr, u8 type) 366{ 367 for (; attr; attr = attr->next) { 368 if (attr->type == type) 369 return attr; 370 } 371 return NULL; 372} 373 374 375static void hostapd_config_free_radius_attr(struct hostapd_radius_attr *attr) 376{ 377 struct hostapd_radius_attr *prev; 378 379 while (attr) { 380 prev = attr; 381 attr = attr->next; 382 wpabuf_free(prev->val); 383 os_free(prev); 384 } 385} 386 387 388static void hostapd_config_free_eap_user(struct hostapd_eap_user *user) 389{ 390 os_free(user->identity); 391 os_free(user->password); 392 os_free(user); 393} 394 395 396static void hostapd_config_free_wep(struct hostapd_wep_keys *keys) 397{ 398 int i; 399 for (i = 0; i < NUM_WEP_KEYS; i++) { 400 os_free(keys->key[i]); 401 keys->key[i] = NULL; 402 } 403} 404 405 406void hostapd_config_free_bss(struct hostapd_bss_config *conf) 407{ 408 struct hostapd_wpa_psk *psk, *prev; 409 struct hostapd_eap_user *user, *prev_user; 410 411 if (conf == NULL) 412 return; 413 414 psk = conf->ssid.wpa_psk; 415 while (psk) { 416 prev = psk; 417 psk = psk->next; 418 os_free(prev); 419 } 420 421 os_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->accept_mac); 438 os_free(conf->deny_mac); 439 os_free(conf->nas_identifier); 440 if (conf->radius) { 441 hostapd_config_free_radius(conf->radius->auth_servers, 442 conf->radius->num_auth_servers); 443 hostapd_config_free_radius(conf->radius->acct_servers, 444 conf->radius->num_acct_servers); 445 } 446 hostapd_config_free_radius_attr(conf->radius_auth_req_attr); 447 hostapd_config_free_radius_attr(conf->radius_acct_req_attr); 448 os_free(conf->rsn_preauth_interfaces); 449 os_free(conf->ctrl_interface); 450 os_free(conf->ca_cert); 451 os_free(conf->server_cert); 452 os_free(conf->private_key); 453 os_free(conf->private_key_passwd); 454 os_free(conf->ocsp_stapling_response); 455 os_free(conf->dh_file); 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->test_socket); 462 os_free(conf->radius); 463 os_free(conf->radius_das_shared_secret); 464 hostapd_config_free_vlan(conf); 465 os_free(conf->time_zone); 466 467#ifdef CONFIG_IEEE80211R 468 { 469 struct ft_remote_r0kh *r0kh, *r0kh_prev; 470 struct ft_remote_r1kh *r1kh, *r1kh_prev; 471 472 r0kh = conf->r0kh_list; 473 conf->r0kh_list = NULL; 474 while (r0kh) { 475 r0kh_prev = r0kh; 476 r0kh = r0kh->next; 477 os_free(r0kh_prev); 478 } 479 480 r1kh = conf->r1kh_list; 481 conf->r1kh_list = NULL; 482 while (r1kh) { 483 r1kh_prev = r1kh; 484 r1kh = r1kh->next; 485 os_free(r1kh_prev); 486 } 487 } 488#endif /* CONFIG_IEEE80211R */ 489 490#ifdef CONFIG_WPS 491 os_free(conf->wps_pin_requests); 492 os_free(conf->device_name); 493 os_free(conf->manufacturer); 494 os_free(conf->model_name); 495 os_free(conf->model_number); 496 os_free(conf->serial_number); 497 os_free(conf->config_methods); 498 os_free(conf->ap_pin); 499 os_free(conf->extra_cred); 500 os_free(conf->ap_settings); 501 os_free(conf->upnp_iface); 502 os_free(conf->friendly_name); 503 os_free(conf->manufacturer_url); 504 os_free(conf->model_description); 505 os_free(conf->model_url); 506 os_free(conf->upc); 507 wpabuf_free(conf->wps_nfc_dh_pubkey); 508 wpabuf_free(conf->wps_nfc_dh_privkey); 509 wpabuf_free(conf->wps_nfc_dev_pw); 510#endif /* CONFIG_WPS */ 511 512 os_free(conf->roaming_consortium); 513 os_free(conf->venue_name); 514 os_free(conf->nai_realm_data); 515 os_free(conf->network_auth_type); 516 os_free(conf->anqp_3gpp_cell_net); 517 os_free(conf->domain_name); 518 519#ifdef CONFIG_RADIUS_TEST 520 os_free(conf->dump_msk_file); 521#endif /* CONFIG_RADIUS_TEST */ 522 523#ifdef CONFIG_HS20 524 os_free(conf->hs20_oper_friendly_name); 525 os_free(conf->hs20_wan_metrics); 526 os_free(conf->hs20_connection_capability); 527 os_free(conf->hs20_operating_class); 528#endif /* CONFIG_HS20 */ 529 530 wpabuf_free(conf->vendor_elements); 531 532 os_free(conf->sae_groups); 533 534 os_free(conf->server_id); 535 536 os_free(conf); 537} 538 539 540/** 541 * hostapd_config_free - Free hostapd configuration 542 * @conf: Configuration data from hostapd_config_read(). 543 */ 544void hostapd_config_free(struct hostapd_config *conf) 545{ 546 size_t i; 547 548 if (conf == NULL) 549 return; 550 551 for (i = 0; i < conf->num_bss; i++) 552 hostapd_config_free_bss(conf->bss[i]); 553 os_free(conf->bss); 554 os_free(conf->supported_rates); 555 os_free(conf->basic_rates); 556 557 os_free(conf); 558} 559 560 561/** 562 * hostapd_maclist_found - Find a MAC address from a list 563 * @list: MAC address list 564 * @num_entries: Number of addresses in the list 565 * @addr: Address to search for 566 * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed 567 * Returns: 1 if address is in the list or 0 if not. 568 * 569 * Perform a binary search for given MAC address from a pre-sorted list. 570 */ 571int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries, 572 const u8 *addr, int *vlan_id) 573{ 574 int start, end, middle, res; 575 576 start = 0; 577 end = num_entries - 1; 578 579 while (start <= end) { 580 middle = (start + end) / 2; 581 res = os_memcmp(list[middle].addr, addr, ETH_ALEN); 582 if (res == 0) { 583 if (vlan_id) 584 *vlan_id = list[middle].vlan_id; 585 return 1; 586 } 587 if (res < 0) 588 start = middle + 1; 589 else 590 end = middle - 1; 591 } 592 593 return 0; 594} 595 596 597int hostapd_rate_found(int *list, int rate) 598{ 599 int i; 600 601 if (list == NULL) 602 return 0; 603 604 for (i = 0; list[i] >= 0; i++) 605 if (list[i] == rate) 606 return 1; 607 608 return 0; 609} 610 611 612int hostapd_vlan_id_valid(struct hostapd_vlan *vlan, int vlan_id) 613{ 614 struct hostapd_vlan *v = vlan; 615 while (v) { 616 if (v->vlan_id == vlan_id || v->vlan_id == VLAN_ID_WILDCARD) 617 return 1; 618 v = v->next; 619 } 620 return 0; 621} 622 623 624const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id) 625{ 626 struct hostapd_vlan *v = vlan; 627 while (v) { 628 if (v->vlan_id == vlan_id) 629 return v->ifname; 630 v = v->next; 631 } 632 return NULL; 633} 634 635 636const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf, 637 const u8 *addr, const u8 *p2p_dev_addr, 638 const u8 *prev_psk) 639{ 640 struct hostapd_wpa_psk *psk; 641 int next_ok = prev_psk == NULL; 642 643 if (p2p_dev_addr) { 644 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR 645 " p2p_dev_addr=" MACSTR " prev_psk=%p", 646 MAC2STR(addr), MAC2STR(p2p_dev_addr), prev_psk); 647 if (!is_zero_ether_addr(p2p_dev_addr)) 648 addr = NULL; /* Use P2P Device Address for matching */ 649 } else { 650 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR 651 " prev_psk=%p", 652 MAC2STR(addr), prev_psk); 653 } 654 655 for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) { 656 if (next_ok && 657 (psk->group || 658 (addr && os_memcmp(psk->addr, addr, ETH_ALEN) == 0) || 659 (!addr && p2p_dev_addr && 660 os_memcmp(psk->p2p_dev_addr, p2p_dev_addr, ETH_ALEN) == 661 0))) 662 return psk->psk; 663 664 if (psk->psk == prev_psk) 665 next_ok = 1; 666 } 667 668 return NULL; 669} 670 671 672static int hostapd_config_check_bss(struct hostapd_bss_config *bss, 673 struct hostapd_config *conf) 674{ 675 if (bss->ieee802_1x && !bss->eap_server && 676 !bss->radius->auth_servers) { 677 wpa_printf(MSG_ERROR, "Invalid IEEE 802.1X configuration (no " 678 "EAP authenticator configured)."); 679 return -1; 680 } 681 682 if (bss->wpa) { 683 int wep, i; 684 685 wep = bss->default_wep_key_len > 0 || 686 bss->individual_wep_key_len > 0; 687 for (i = 0; i < NUM_WEP_KEYS; i++) { 688 if (bss->ssid.wep.keys_set) { 689 wep = 1; 690 break; 691 } 692 } 693 694 if (wep) { 695 wpa_printf(MSG_ERROR, "WEP configuration in a WPA network is not supported"); 696 return -1; 697 } 698 } 699 700 if (bss->wpa && bss->wpa_psk_radius != PSK_RADIUS_IGNORED && 701 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) { 702 wpa_printf(MSG_ERROR, "WPA-PSK using RADIUS enabled, but no " 703 "RADIUS checking (macaddr_acl=2) enabled."); 704 return -1; 705 } 706 707 if (bss->wpa && (bss->wpa_key_mgmt & WPA_KEY_MGMT_PSK) && 708 bss->ssid.wpa_psk == NULL && bss->ssid.wpa_passphrase == NULL && 709 bss->ssid.wpa_psk_file == NULL && 710 (bss->wpa_psk_radius != PSK_RADIUS_REQUIRED || 711 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH)) { 712 wpa_printf(MSG_ERROR, "WPA-PSK enabled, but PSK or passphrase " 713 "is not configured."); 714 return -1; 715 } 716 717 if (hostapd_mac_comp_empty(bss->bssid) != 0) { 718 size_t i; 719 720 for (i = 0; i < conf->num_bss; i++) { 721 if (conf->bss[i] != bss && 722 (hostapd_mac_comp(conf->bss[i]->bssid, 723 bss->bssid) == 0)) { 724 wpa_printf(MSG_ERROR, "Duplicate BSSID " MACSTR 725 " on interface '%s' and '%s'.", 726 MAC2STR(bss->bssid), 727 conf->bss[i]->iface, bss->iface); 728 return -1; 729 } 730 } 731 } 732 733#ifdef CONFIG_IEEE80211R 734 if (wpa_key_mgmt_ft(bss->wpa_key_mgmt) && 735 (bss->nas_identifier == NULL || 736 os_strlen(bss->nas_identifier) < 1 || 737 os_strlen(bss->nas_identifier) > FT_R0KH_ID_MAX_LEN)) { 738 wpa_printf(MSG_ERROR, "FT (IEEE 802.11r) requires " 739 "nas_identifier to be configured as a 1..48 octet " 740 "string"); 741 return -1; 742 } 743#endif /* CONFIG_IEEE80211R */ 744 745#ifdef CONFIG_IEEE80211N 746 if (conf->ieee80211n && conf->hw_mode == HOSTAPD_MODE_IEEE80211B) { 747 bss->disable_11n = 1; 748 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) in 11b mode is not " 749 "allowed, disabling HT capabilites"); 750 } 751 752 if (conf->ieee80211n && 753 bss->ssid.security_policy == SECURITY_STATIC_WEP) { 754 bss->disable_11n = 1; 755 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WEP is not " 756 "allowed, disabling HT capabilities"); 757 } 758 759 if (conf->ieee80211n && bss->wpa && 760 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) && 761 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | 762 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256))) 763 { 764 bss->disable_11n = 1; 765 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WPA/WPA2 " 766 "requires CCMP/GCMP to be enabled, disabling HT " 767 "capabilities"); 768 } 769#endif /* CONFIG_IEEE80211N */ 770 771#ifdef CONFIG_WPS2 772 if (bss->wps_state && bss->ignore_broadcast_ssid) { 773 wpa_printf(MSG_INFO, "WPS: ignore_broadcast_ssid " 774 "configuration forced WPS to be disabled"); 775 bss->wps_state = 0; 776 } 777 778 if (bss->wps_state && bss->ssid.wep.keys_set && bss->wpa == 0) { 779 wpa_printf(MSG_INFO, "WPS: WEP configuration forced WPS to be " 780 "disabled"); 781 bss->wps_state = 0; 782 } 783 784 if (bss->wps_state && bss->wpa && 785 (!(bss->wpa & 2) || 786 !(bss->rsn_pairwise & WPA_CIPHER_CCMP))) { 787 wpa_printf(MSG_INFO, "WPS: WPA/TKIP configuration without " 788 "WPA2/CCMP forced WPS to be disabled"); 789 bss->wps_state = 0; 790 } 791#endif /* CONFIG_WPS2 */ 792 793#ifdef CONFIG_HS20 794 if (bss->hs20 && 795 (!(bss->wpa & 2) || 796 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | 797 WPA_CIPHER_CCMP_256 | 798 WPA_CIPHER_GCMP_256)))) { 799 wpa_printf(MSG_ERROR, "HS 2.0: WPA2-Enterprise/CCMP " 800 "configuration is required for Hotspot 2.0 " 801 "functionality"); 802 return -1; 803 } 804#endif /* CONFIG_HS20 */ 805 806 return 0; 807} 808 809 810int hostapd_config_check(struct hostapd_config *conf) 811{ 812 size_t i; 813 814 if (conf->ieee80211d && (!conf->country[0] || !conf->country[1])) { 815 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11d without " 816 "setting the country_code"); 817 return -1; 818 } 819 820 if (conf->ieee80211h && !conf->ieee80211d) { 821 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11h without " 822 "IEEE 802.11d enabled"); 823 return -1; 824 } 825 826 for (i = 0; i < conf->num_bss; i++) { 827 if (hostapd_config_check_bss(conf->bss[i], conf)) 828 return -1; 829 } 830 831 return 0; 832} 833 834 835void hostapd_set_security_params(struct hostapd_bss_config *bss) 836{ 837 if (bss->individual_wep_key_len == 0) { 838 /* individual keys are not use; can use key idx0 for 839 * broadcast keys */ 840 bss->broadcast_key_idx_min = 0; 841 } 842 843 if ((bss->wpa & 2) && bss->rsn_pairwise == 0) 844 bss->rsn_pairwise = bss->wpa_pairwise; 845 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, bss->wpa_pairwise, 846 bss->rsn_pairwise); 847 848 bss->radius->auth_server = bss->radius->auth_servers; 849 bss->radius->acct_server = bss->radius->acct_servers; 850 851 if (bss->wpa && bss->ieee802_1x) { 852 bss->ssid.security_policy = SECURITY_WPA; 853 } else if (bss->wpa) { 854 bss->ssid.security_policy = SECURITY_WPA_PSK; 855 } else if (bss->ieee802_1x) { 856 int cipher = WPA_CIPHER_NONE; 857 bss->ssid.security_policy = SECURITY_IEEE_802_1X; 858 bss->ssid.wep.default_len = bss->default_wep_key_len; 859 if (bss->default_wep_key_len) 860 cipher = bss->default_wep_key_len >= 13 ? 861 WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40; 862 bss->wpa_group = cipher; 863 bss->wpa_pairwise = cipher; 864 bss->rsn_pairwise = cipher; 865 } else if (bss->ssid.wep.keys_set) { 866 int cipher = WPA_CIPHER_WEP40; 867 if (bss->ssid.wep.len[0] >= 13) 868 cipher = WPA_CIPHER_WEP104; 869 bss->ssid.security_policy = SECURITY_STATIC_WEP; 870 bss->wpa_group = cipher; 871 bss->wpa_pairwise = cipher; 872 bss->rsn_pairwise = cipher; 873 } else { 874 bss->ssid.security_policy = SECURITY_PLAINTEXT; 875 bss->wpa_group = WPA_CIPHER_NONE; 876 bss->wpa_pairwise = WPA_CIPHER_NONE; 877 bss->rsn_pairwise = WPA_CIPHER_NONE; 878 } 879} 880