ap_config.c revision cce06667447b5aec83452adb0c15100ada531095
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->dump_log_name); 437 os_free(conf->eap_req_id_text); 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->pac_opaque_encr_key); 458 os_free(conf->eap_fast_a_id); 459 os_free(conf->eap_fast_a_id_info); 460 os_free(conf->eap_sim_db); 461 os_free(conf->radius_server_clients); 462 os_free(conf->test_socket); 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 wpabuf_free(conf->wps_nfc_dh_pubkey); 509 wpabuf_free(conf->wps_nfc_dh_privkey); 510 wpabuf_free(conf->wps_nfc_dev_pw); 511#endif /* CONFIG_WPS */ 512 513 os_free(conf->roaming_consortium); 514 os_free(conf->venue_name); 515 os_free(conf->nai_realm_data); 516 os_free(conf->network_auth_type); 517 os_free(conf->anqp_3gpp_cell_net); 518 os_free(conf->domain_name); 519 520#ifdef CONFIG_RADIUS_TEST 521 os_free(conf->dump_msk_file); 522#endif /* CONFIG_RADIUS_TEST */ 523 524#ifdef CONFIG_HS20 525 os_free(conf->hs20_oper_friendly_name); 526 os_free(conf->hs20_wan_metrics); 527 os_free(conf->hs20_connection_capability); 528 os_free(conf->hs20_operating_class); 529#endif /* CONFIG_HS20 */ 530 531 wpabuf_free(conf->vendor_elements); 532 533 os_free(conf->sae_groups); 534 535 os_free(conf->server_id); 536 537 os_free(conf); 538} 539 540 541/** 542 * hostapd_config_free - Free hostapd configuration 543 * @conf: Configuration data from hostapd_config_read(). 544 */ 545void hostapd_config_free(struct hostapd_config *conf) 546{ 547 size_t i; 548 549 if (conf == NULL) 550 return; 551 552 for (i = 0; i < conf->num_bss; i++) 553 hostapd_config_free_bss(conf->bss[i]); 554 os_free(conf->bss); 555 os_free(conf->supported_rates); 556 os_free(conf->basic_rates); 557 558 os_free(conf); 559} 560 561 562/** 563 * hostapd_maclist_found - Find a MAC address from a list 564 * @list: MAC address list 565 * @num_entries: Number of addresses in the list 566 * @addr: Address to search for 567 * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed 568 * Returns: 1 if address is in the list or 0 if not. 569 * 570 * Perform a binary search for given MAC address from a pre-sorted list. 571 */ 572int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries, 573 const u8 *addr, int *vlan_id) 574{ 575 int start, end, middle, res; 576 577 start = 0; 578 end = num_entries - 1; 579 580 while (start <= end) { 581 middle = (start + end) / 2; 582 res = os_memcmp(list[middle].addr, addr, ETH_ALEN); 583 if (res == 0) { 584 if (vlan_id) 585 *vlan_id = list[middle].vlan_id; 586 return 1; 587 } 588 if (res < 0) 589 start = middle + 1; 590 else 591 end = middle - 1; 592 } 593 594 return 0; 595} 596 597 598int hostapd_rate_found(int *list, int rate) 599{ 600 int i; 601 602 if (list == NULL) 603 return 0; 604 605 for (i = 0; list[i] >= 0; i++) 606 if (list[i] == rate) 607 return 1; 608 609 return 0; 610} 611 612 613int hostapd_vlan_id_valid(struct hostapd_vlan *vlan, int vlan_id) 614{ 615 struct hostapd_vlan *v = vlan; 616 while (v) { 617 if (v->vlan_id == vlan_id || v->vlan_id == VLAN_ID_WILDCARD) 618 return 1; 619 v = v->next; 620 } 621 return 0; 622} 623 624 625const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id) 626{ 627 struct hostapd_vlan *v = vlan; 628 while (v) { 629 if (v->vlan_id == vlan_id) 630 return v->ifname; 631 v = v->next; 632 } 633 return NULL; 634} 635 636 637const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf, 638 const u8 *addr, const u8 *p2p_dev_addr, 639 const u8 *prev_psk) 640{ 641 struct hostapd_wpa_psk *psk; 642 int next_ok = prev_psk == NULL; 643 644 if (p2p_dev_addr) { 645 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR 646 " p2p_dev_addr=" MACSTR " prev_psk=%p", 647 MAC2STR(addr), MAC2STR(p2p_dev_addr), prev_psk); 648 if (!is_zero_ether_addr(p2p_dev_addr)) 649 addr = NULL; /* Use P2P Device Address for matching */ 650 } else { 651 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR 652 " prev_psk=%p", 653 MAC2STR(addr), prev_psk); 654 } 655 656 for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) { 657 if (next_ok && 658 (psk->group || 659 (addr && os_memcmp(psk->addr, addr, ETH_ALEN) == 0) || 660 (!addr && p2p_dev_addr && 661 os_memcmp(psk->p2p_dev_addr, p2p_dev_addr, ETH_ALEN) == 662 0))) 663 return psk->psk; 664 665 if (psk->psk == prev_psk) 666 next_ok = 1; 667 } 668 669 return NULL; 670} 671 672 673static int hostapd_config_check_bss(struct hostapd_bss_config *bss, 674 struct hostapd_config *conf) 675{ 676 if (bss->ieee802_1x && !bss->eap_server && 677 !bss->radius->auth_servers) { 678 wpa_printf(MSG_ERROR, "Invalid IEEE 802.1X configuration (no " 679 "EAP authenticator configured)."); 680 return -1; 681 } 682 683 if (bss->wpa) { 684 int wep, i; 685 686 wep = bss->default_wep_key_len > 0 || 687 bss->individual_wep_key_len > 0; 688 for (i = 0; i < NUM_WEP_KEYS; i++) { 689 if (bss->ssid.wep.keys_set) { 690 wep = 1; 691 break; 692 } 693 } 694 695 if (wep) { 696 wpa_printf(MSG_ERROR, "WEP configuration in a WPA network is not supported"); 697 return -1; 698 } 699 } 700 701 if (bss->wpa && bss->wpa_psk_radius != PSK_RADIUS_IGNORED && 702 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) { 703 wpa_printf(MSG_ERROR, "WPA-PSK using RADIUS enabled, but no " 704 "RADIUS checking (macaddr_acl=2) enabled."); 705 return -1; 706 } 707 708 if (bss->wpa && (bss->wpa_key_mgmt & WPA_KEY_MGMT_PSK) && 709 bss->ssid.wpa_psk == NULL && bss->ssid.wpa_passphrase == NULL && 710 bss->ssid.wpa_psk_file == NULL && 711 (bss->wpa_psk_radius != PSK_RADIUS_REQUIRED || 712 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH)) { 713 wpa_printf(MSG_ERROR, "WPA-PSK enabled, but PSK or passphrase " 714 "is not configured."); 715 return -1; 716 } 717 718 if (hostapd_mac_comp_empty(bss->bssid) != 0) { 719 size_t i; 720 721 for (i = 0; i < conf->num_bss; i++) { 722 if (conf->bss[i] != bss && 723 (hostapd_mac_comp(conf->bss[i]->bssid, 724 bss->bssid) == 0)) { 725 wpa_printf(MSG_ERROR, "Duplicate BSSID " MACSTR 726 " on interface '%s' and '%s'.", 727 MAC2STR(bss->bssid), 728 conf->bss[i]->iface, bss->iface); 729 return -1; 730 } 731 } 732 } 733 734#ifdef CONFIG_IEEE80211R 735 if (wpa_key_mgmt_ft(bss->wpa_key_mgmt) && 736 (bss->nas_identifier == NULL || 737 os_strlen(bss->nas_identifier) < 1 || 738 os_strlen(bss->nas_identifier) > FT_R0KH_ID_MAX_LEN)) { 739 wpa_printf(MSG_ERROR, "FT (IEEE 802.11r) requires " 740 "nas_identifier to be configured as a 1..48 octet " 741 "string"); 742 return -1; 743 } 744#endif /* CONFIG_IEEE80211R */ 745 746#ifdef CONFIG_IEEE80211N 747 if (conf->ieee80211n && conf->hw_mode == HOSTAPD_MODE_IEEE80211B) { 748 bss->disable_11n = 1; 749 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) in 11b mode is not " 750 "allowed, disabling HT capabilites"); 751 } 752 753 if (conf->ieee80211n && 754 bss->ssid.security_policy == SECURITY_STATIC_WEP) { 755 bss->disable_11n = 1; 756 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WEP is not " 757 "allowed, disabling HT capabilities"); 758 } 759 760 if (conf->ieee80211n && bss->wpa && 761 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) && 762 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP))) { 763 bss->disable_11n = 1; 764 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WPA/WPA2 " 765 "requires CCMP/GCMP to be enabled, disabling HT " 766 "capabilities"); 767 } 768#endif /* CONFIG_IEEE80211N */ 769 770#ifdef CONFIG_WPS2 771 if (bss->wps_state && bss->ignore_broadcast_ssid) { 772 wpa_printf(MSG_INFO, "WPS: ignore_broadcast_ssid " 773 "configuration forced WPS to be disabled"); 774 bss->wps_state = 0; 775 } 776 777 if (bss->wps_state && bss->ssid.wep.keys_set && bss->wpa == 0) { 778 wpa_printf(MSG_INFO, "WPS: WEP configuration forced WPS to be " 779 "disabled"); 780 bss->wps_state = 0; 781 } 782 783 if (bss->wps_state && bss->wpa && 784 (!(bss->wpa & 2) || 785 !(bss->rsn_pairwise & WPA_CIPHER_CCMP))) { 786 wpa_printf(MSG_INFO, "WPS: WPA/TKIP configuration without " 787 "WPA2/CCMP forced WPS to be disabled"); 788 bss->wps_state = 0; 789 } 790#endif /* CONFIG_WPS2 */ 791 792#ifdef CONFIG_HS20 793 if (bss->hs20 && 794 (!(bss->wpa & 2) || 795 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)))) { 796 wpa_printf(MSG_ERROR, "HS 2.0: WPA2-Enterprise/CCMP " 797 "configuration is required for Hotspot 2.0 " 798 "functionality"); 799 return -1; 800 } 801#endif /* CONFIG_HS20 */ 802 803 return 0; 804} 805 806 807int hostapd_config_check(struct hostapd_config *conf) 808{ 809 size_t i; 810 811 if (conf->ieee80211d && (!conf->country[0] || !conf->country[1])) { 812 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11d without " 813 "setting the country_code"); 814 return -1; 815 } 816 817 if (conf->ieee80211h && !conf->ieee80211d) { 818 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11h without " 819 "IEEE 802.11d enabled"); 820 return -1; 821 } 822 823 for (i = 0; i < conf->num_bss; i++) { 824 if (hostapd_config_check_bss(conf->bss[i], conf)) 825 return -1; 826 } 827 828 return 0; 829} 830 831 832void hostapd_set_security_params(struct hostapd_bss_config *bss) 833{ 834 if (bss->individual_wep_key_len == 0) { 835 /* individual keys are not use; can use key idx0 for 836 * broadcast keys */ 837 bss->broadcast_key_idx_min = 0; 838 } 839 840 if ((bss->wpa & 2) && bss->rsn_pairwise == 0) 841 bss->rsn_pairwise = bss->wpa_pairwise; 842 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, bss->wpa_pairwise, 843 bss->rsn_pairwise); 844 845 bss->radius->auth_server = bss->radius->auth_servers; 846 bss->radius->acct_server = bss->radius->acct_servers; 847 848 if (bss->wpa && bss->ieee802_1x) { 849 bss->ssid.security_policy = SECURITY_WPA; 850 } else if (bss->wpa) { 851 bss->ssid.security_policy = SECURITY_WPA_PSK; 852 } else if (bss->ieee802_1x) { 853 int cipher = WPA_CIPHER_NONE; 854 bss->ssid.security_policy = SECURITY_IEEE_802_1X; 855 bss->ssid.wep.default_len = bss->default_wep_key_len; 856 if (bss->default_wep_key_len) 857 cipher = bss->default_wep_key_len >= 13 ? 858 WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40; 859 bss->wpa_group = cipher; 860 bss->wpa_pairwise = cipher; 861 bss->rsn_pairwise = cipher; 862 } else if (bss->ssid.wep.keys_set) { 863 int cipher = WPA_CIPHER_WEP40; 864 if (bss->ssid.wep.len[0] >= 13) 865 cipher = WPA_CIPHER_WEP104; 866 bss->ssid.security_policy = SECURITY_STATIC_WEP; 867 bss->wpa_group = cipher; 868 bss->wpa_pairwise = cipher; 869 bss->rsn_pairwise = cipher; 870 } else { 871 bss->ssid.security_policy = SECURITY_PLAINTEXT; 872 bss->wpa_group = WPA_CIPHER_NONE; 873 bss->wpa_pairwise = WPA_CIPHER_NONE; 874 bss->rsn_pairwise = WPA_CIPHER_NONE; 875 } 876} 877