1/* 2 * hostapd / Configuration helper functions 3 * Copyright (c) 2003-2014, Jouni Malinen <j@w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9#include "utils/includes.h" 10 11#include "utils/common.h" 12#include "crypto/sha1.h" 13#include "radius/radius_client.h" 14#include "common/ieee802_11_defs.h" 15#include "common/eapol_common.h" 16#include "common/dhcp.h" 17#include "eap_common/eap_wsc_common.h" 18#include "eap_server/eap.h" 19#include "wpa_auth.h" 20#include "sta_info.h" 21#include "ap_config.h" 22 23 24static void hostapd_config_free_vlan(struct hostapd_bss_config *bss) 25{ 26 struct hostapd_vlan *vlan, *prev; 27 28 vlan = bss->vlan; 29 prev = NULL; 30 while (vlan) { 31 prev = vlan; 32 vlan = vlan->next; 33 os_free(prev); 34 } 35 36 bss->vlan = NULL; 37} 38 39 40void hostapd_config_defaults_bss(struct hostapd_bss_config *bss) 41{ 42 dl_list_init(&bss->anqp_elem); 43 44 bss->logger_syslog_level = HOSTAPD_LEVEL_INFO; 45 bss->logger_stdout_level = HOSTAPD_LEVEL_INFO; 46 bss->logger_syslog = (unsigned int) -1; 47 bss->logger_stdout = (unsigned int) -1; 48 49 bss->auth_algs = WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED; 50 51 bss->wep_rekeying_period = 300; 52 /* use key0 in individual key and key1 in broadcast key */ 53 bss->broadcast_key_idx_min = 1; 54 bss->broadcast_key_idx_max = 2; 55 bss->eap_reauth_period = 3600; 56 57 bss->wpa_group_rekey = 600; 58 bss->wpa_gmk_rekey = 86400; 59 bss->wpa_group_update_count = 4; 60 bss->wpa_pairwise_update_count = 4; 61 bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK; 62 bss->wpa_pairwise = WPA_CIPHER_TKIP; 63 bss->wpa_group = WPA_CIPHER_TKIP; 64 bss->rsn_pairwise = 0; 65 66 bss->max_num_sta = MAX_STA_COUNT; 67 68 bss->dtim_period = 2; 69 70 bss->radius_server_auth_port = 1812; 71 bss->eap_sim_db_timeout = 1; 72 bss->ap_max_inactivity = AP_MAX_INACTIVITY; 73 bss->eapol_version = EAPOL_VERSION; 74 75 bss->max_listen_interval = 65535; 76 77 bss->pwd_group = 19; /* ECC: GF(p=256) */ 78 79#ifdef CONFIG_IEEE80211W 80 bss->assoc_sa_query_max_timeout = 1000; 81 bss->assoc_sa_query_retry_timeout = 201; 82 bss->group_mgmt_cipher = WPA_CIPHER_AES_128_CMAC; 83#endif /* CONFIG_IEEE80211W */ 84#ifdef EAP_SERVER_FAST 85 /* both anonymous and authenticated provisioning */ 86 bss->eap_fast_prov = 3; 87 bss->pac_key_lifetime = 7 * 24 * 60 * 60; 88 bss->pac_key_refresh_time = 1 * 24 * 60 * 60; 89#endif /* EAP_SERVER_FAST */ 90 91 /* Set to -1 as defaults depends on HT in setup */ 92 bss->wmm_enabled = -1; 93 94#ifdef CONFIG_IEEE80211R_AP 95 bss->ft_over_ds = 1; 96#endif /* CONFIG_IEEE80211R_AP */ 97 98 bss->radius_das_time_window = 300; 99 100 bss->sae_anti_clogging_threshold = 5; 101 102 bss->gas_frag_limit = 1400; 103 104#ifdef CONFIG_FILS 105 dl_list_init(&bss->fils_realms); 106 bss->fils_hlp_wait_time = 30; 107 bss->dhcp_server_port = DHCP_SERVER_PORT; 108 bss->dhcp_relay_port = DHCP_SERVER_PORT; 109#endif /* CONFIG_FILS */ 110} 111 112 113struct hostapd_config * hostapd_config_defaults(void) 114{ 115#define ecw2cw(ecw) ((1 << (ecw)) - 1) 116 117 struct hostapd_config *conf; 118 struct hostapd_bss_config *bss; 119 const int aCWmin = 4, aCWmax = 10; 120 const struct hostapd_wmm_ac_params ac_bk = 121 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */ 122 const struct hostapd_wmm_ac_params ac_be = 123 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */ 124 const struct hostapd_wmm_ac_params ac_vi = /* video traffic */ 125 { aCWmin - 1, aCWmin, 2, 3008 / 32, 0 }; 126 const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */ 127 { aCWmin - 2, aCWmin - 1, 2, 1504 / 32, 0 }; 128 const struct hostapd_tx_queue_params txq_bk = 129 { 7, ecw2cw(aCWmin), ecw2cw(aCWmax), 0 }; 130 const struct hostapd_tx_queue_params txq_be = 131 { 3, ecw2cw(aCWmin), 4 * (ecw2cw(aCWmin) + 1) - 1, 0}; 132 const struct hostapd_tx_queue_params txq_vi = 133 { 1, (ecw2cw(aCWmin) + 1) / 2 - 1, ecw2cw(aCWmin), 30}; 134 const struct hostapd_tx_queue_params txq_vo = 135 { 1, (ecw2cw(aCWmin) + 1) / 4 - 1, 136 (ecw2cw(aCWmin) + 1) / 2 - 1, 15}; 137 138#undef ecw2cw 139 140 conf = os_zalloc(sizeof(*conf)); 141 bss = os_zalloc(sizeof(*bss)); 142 if (conf == NULL || bss == NULL) { 143 wpa_printf(MSG_ERROR, "Failed to allocate memory for " 144 "configuration data."); 145 os_free(conf); 146 os_free(bss); 147 return NULL; 148 } 149 conf->bss = os_calloc(1, sizeof(struct hostapd_bss_config *)); 150 if (conf->bss == NULL) { 151 os_free(conf); 152 os_free(bss); 153 return NULL; 154 } 155 conf->bss[0] = bss; 156 157 bss->radius = os_zalloc(sizeof(*bss->radius)); 158 if (bss->radius == NULL) { 159 os_free(conf->bss); 160 os_free(conf); 161 os_free(bss); 162 return NULL; 163 } 164 165 hostapd_config_defaults_bss(bss); 166 167 conf->num_bss = 1; 168 169 conf->beacon_int = 100; 170 conf->rts_threshold = -1; /* use driver default: 2347 */ 171 conf->fragm_threshold = -1; /* user driver default: 2346 */ 172 conf->send_probe_response = 1; 173 /* Set to invalid value means do not add Power Constraint IE */ 174 conf->local_pwr_constraint = -1; 175 176 conf->wmm_ac_params[0] = ac_be; 177 conf->wmm_ac_params[1] = ac_bk; 178 conf->wmm_ac_params[2] = ac_vi; 179 conf->wmm_ac_params[3] = ac_vo; 180 181 conf->tx_queue[0] = txq_vo; 182 conf->tx_queue[1] = txq_vi; 183 conf->tx_queue[2] = txq_be; 184 conf->tx_queue[3] = txq_bk; 185 186 conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED; 187 188 conf->ap_table_max_size = 255; 189 conf->ap_table_expiration_time = 60; 190 conf->track_sta_max_age = 180; 191 192#ifdef CONFIG_TESTING_OPTIONS 193 conf->ignore_probe_probability = 0.0; 194 conf->ignore_auth_probability = 0.0; 195 conf->ignore_assoc_probability = 0.0; 196 conf->ignore_reassoc_probability = 0.0; 197 conf->corrupt_gtk_rekey_mic_probability = 0.0; 198 conf->ecsa_ie_only = 0; 199#endif /* CONFIG_TESTING_OPTIONS */ 200 201 conf->acs = 0; 202 conf->acs_ch_list.num = 0; 203#ifdef CONFIG_ACS 204 conf->acs_num_scans = 5; 205#endif /* CONFIG_ACS */ 206 207 return conf; 208} 209 210 211int hostapd_mac_comp(const void *a, const void *b) 212{ 213 return os_memcmp(a, b, sizeof(macaddr)); 214} 215 216 217static int hostapd_config_read_wpa_psk(const char *fname, 218 struct hostapd_ssid *ssid) 219{ 220 FILE *f; 221 char buf[128], *pos; 222 int line = 0, ret = 0, len, ok; 223 u8 addr[ETH_ALEN]; 224 struct hostapd_wpa_psk *psk; 225 226 if (!fname) 227 return 0; 228 229 f = fopen(fname, "r"); 230 if (!f) { 231 wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname); 232 return -1; 233 } 234 235 while (fgets(buf, sizeof(buf), f)) { 236 line++; 237 238 if (buf[0] == '#') 239 continue; 240 pos = buf; 241 while (*pos != '\0') { 242 if (*pos == '\n') { 243 *pos = '\0'; 244 break; 245 } 246 pos++; 247 } 248 if (buf[0] == '\0') 249 continue; 250 251 if (hwaddr_aton(buf, addr)) { 252 wpa_printf(MSG_ERROR, "Invalid MAC address '%s' on " 253 "line %d in '%s'", buf, line, fname); 254 ret = -1; 255 break; 256 } 257 258 psk = os_zalloc(sizeof(*psk)); 259 if (psk == NULL) { 260 wpa_printf(MSG_ERROR, "WPA PSK allocation failed"); 261 ret = -1; 262 break; 263 } 264 if (is_zero_ether_addr(addr)) 265 psk->group = 1; 266 else 267 os_memcpy(psk->addr, addr, ETH_ALEN); 268 269 pos = buf + 17; 270 if (*pos == '\0') { 271 wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'", 272 line, fname); 273 os_free(psk); 274 ret = -1; 275 break; 276 } 277 pos++; 278 279 ok = 0; 280 len = os_strlen(pos); 281 if (len == 64 && hexstr2bin(pos, psk->psk, PMK_LEN) == 0) 282 ok = 1; 283 else if (len >= 8 && len < 64) { 284 pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len, 285 4096, psk->psk, PMK_LEN); 286 ok = 1; 287 } 288 if (!ok) { 289 wpa_printf(MSG_ERROR, "Invalid PSK '%s' on line %d in " 290 "'%s'", pos, line, fname); 291 os_free(psk); 292 ret = -1; 293 break; 294 } 295 296 psk->next = ssid->wpa_psk; 297 ssid->wpa_psk = psk; 298 } 299 300 fclose(f); 301 302 return ret; 303} 304 305 306static int hostapd_derive_psk(struct hostapd_ssid *ssid) 307{ 308 ssid->wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk)); 309 if (ssid->wpa_psk == NULL) { 310 wpa_printf(MSG_ERROR, "Unable to alloc space for PSK"); 311 return -1; 312 } 313 wpa_hexdump_ascii(MSG_DEBUG, "SSID", 314 (u8 *) ssid->ssid, ssid->ssid_len); 315 wpa_hexdump_ascii_key(MSG_DEBUG, "PSK (ASCII passphrase)", 316 (u8 *) ssid->wpa_passphrase, 317 os_strlen(ssid->wpa_passphrase)); 318 pbkdf2_sha1(ssid->wpa_passphrase, 319 ssid->ssid, ssid->ssid_len, 320 4096, ssid->wpa_psk->psk, PMK_LEN); 321 wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)", 322 ssid->wpa_psk->psk, PMK_LEN); 323 return 0; 324} 325 326 327int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf) 328{ 329 struct hostapd_ssid *ssid = &conf->ssid; 330 331 if (ssid->wpa_passphrase != NULL) { 332 if (ssid->wpa_psk != NULL) { 333 wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK " 334 "instead of passphrase"); 335 } else { 336 wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on " 337 "passphrase"); 338 if (hostapd_derive_psk(ssid) < 0) 339 return -1; 340 } 341 ssid->wpa_psk->group = 1; 342 } 343 344 return hostapd_config_read_wpa_psk(ssid->wpa_psk_file, &conf->ssid); 345} 346 347 348static void hostapd_config_free_radius(struct hostapd_radius_server *servers, 349 int num_servers) 350{ 351 int i; 352 353 for (i = 0; i < num_servers; i++) { 354 os_free(servers[i].shared_secret); 355 } 356 os_free(servers); 357} 358 359 360struct hostapd_radius_attr * 361hostapd_config_get_radius_attr(struct hostapd_radius_attr *attr, u8 type) 362{ 363 for (; attr; attr = attr->next) { 364 if (attr->type == type) 365 return attr; 366 } 367 return NULL; 368} 369 370 371static void hostapd_config_free_radius_attr(struct hostapd_radius_attr *attr) 372{ 373 struct hostapd_radius_attr *prev; 374 375 while (attr) { 376 prev = attr; 377 attr = attr->next; 378 wpabuf_free(prev->val); 379 os_free(prev); 380 } 381} 382 383 384void hostapd_config_free_eap_user(struct hostapd_eap_user *user) 385{ 386 hostapd_config_free_radius_attr(user->accept_attr); 387 os_free(user->identity); 388 bin_clear_free(user->password, user->password_len); 389 os_free(user); 390} 391 392 393void hostapd_config_free_eap_users(struct hostapd_eap_user *user) 394{ 395 struct hostapd_eap_user *prev_user; 396 397 while (user) { 398 prev_user = user; 399 user = user->next; 400 hostapd_config_free_eap_user(prev_user); 401 } 402} 403 404 405static void hostapd_config_free_wep(struct hostapd_wep_keys *keys) 406{ 407 int i; 408 for (i = 0; i < NUM_WEP_KEYS; i++) { 409 bin_clear_free(keys->key[i], keys->len[i]); 410 keys->key[i] = NULL; 411 } 412} 413 414 415void hostapd_config_clear_wpa_psk(struct hostapd_wpa_psk **l) 416{ 417 struct hostapd_wpa_psk *psk, *tmp; 418 419 for (psk = *l; psk;) { 420 tmp = psk; 421 psk = psk->next; 422 bin_clear_free(tmp, sizeof(*tmp)); 423 } 424 *l = NULL; 425} 426 427 428static void hostapd_config_free_anqp_elem(struct hostapd_bss_config *conf) 429{ 430 struct anqp_element *elem; 431 432 while ((elem = dl_list_first(&conf->anqp_elem, struct anqp_element, 433 list))) { 434 dl_list_del(&elem->list); 435 wpabuf_free(elem->payload); 436 os_free(elem); 437 } 438} 439 440 441static void hostapd_config_free_fils_realms(struct hostapd_bss_config *conf) 442{ 443#ifdef CONFIG_FILS 444 struct fils_realm *realm; 445 446 while ((realm = dl_list_first(&conf->fils_realms, struct fils_realm, 447 list))) { 448 dl_list_del(&realm->list); 449 os_free(realm); 450 } 451#endif /* CONFIG_FILS */ 452} 453 454 455void hostapd_config_free_bss(struct hostapd_bss_config *conf) 456{ 457 if (conf == NULL) 458 return; 459 460 hostapd_config_clear_wpa_psk(&conf->ssid.wpa_psk); 461 462 str_clear_free(conf->ssid.wpa_passphrase); 463 os_free(conf->ssid.wpa_psk_file); 464 hostapd_config_free_wep(&conf->ssid.wep); 465#ifdef CONFIG_FULL_DYNAMIC_VLAN 466 os_free(conf->ssid.vlan_tagged_interface); 467#endif /* CONFIG_FULL_DYNAMIC_VLAN */ 468 469 hostapd_config_free_eap_users(conf->eap_user); 470 os_free(conf->eap_user_sqlite); 471 472 os_free(conf->eap_req_id_text); 473 os_free(conf->erp_domain); 474 os_free(conf->accept_mac); 475 os_free(conf->deny_mac); 476 os_free(conf->nas_identifier); 477 if (conf->radius) { 478 hostapd_config_free_radius(conf->radius->auth_servers, 479 conf->radius->num_auth_servers); 480 hostapd_config_free_radius(conf->radius->acct_servers, 481 conf->radius->num_acct_servers); 482 } 483 hostapd_config_free_radius_attr(conf->radius_auth_req_attr); 484 hostapd_config_free_radius_attr(conf->radius_acct_req_attr); 485 os_free(conf->rsn_preauth_interfaces); 486 os_free(conf->ctrl_interface); 487 os_free(conf->ca_cert); 488 os_free(conf->server_cert); 489 os_free(conf->private_key); 490 os_free(conf->private_key_passwd); 491 os_free(conf->ocsp_stapling_response); 492 os_free(conf->ocsp_stapling_response_multi); 493 os_free(conf->dh_file); 494 os_free(conf->openssl_ciphers); 495 os_free(conf->pac_opaque_encr_key); 496 os_free(conf->eap_fast_a_id); 497 os_free(conf->eap_fast_a_id_info); 498 os_free(conf->eap_sim_db); 499 os_free(conf->radius_server_clients); 500 os_free(conf->radius); 501 os_free(conf->radius_das_shared_secret); 502 hostapd_config_free_vlan(conf); 503 os_free(conf->time_zone); 504 505#ifdef CONFIG_IEEE80211R_AP 506 { 507 struct ft_remote_r0kh *r0kh, *r0kh_prev; 508 struct ft_remote_r1kh *r1kh, *r1kh_prev; 509 510 r0kh = conf->r0kh_list; 511 conf->r0kh_list = NULL; 512 while (r0kh) { 513 r0kh_prev = r0kh; 514 r0kh = r0kh->next; 515 os_free(r0kh_prev); 516 } 517 518 r1kh = conf->r1kh_list; 519 conf->r1kh_list = NULL; 520 while (r1kh) { 521 r1kh_prev = r1kh; 522 r1kh = r1kh->next; 523 os_free(r1kh_prev); 524 } 525 } 526#endif /* CONFIG_IEEE80211R_AP */ 527 528#ifdef CONFIG_WPS 529 os_free(conf->wps_pin_requests); 530 os_free(conf->device_name); 531 os_free(conf->manufacturer); 532 os_free(conf->model_name); 533 os_free(conf->model_number); 534 os_free(conf->serial_number); 535 os_free(conf->config_methods); 536 os_free(conf->ap_pin); 537 os_free(conf->extra_cred); 538 os_free(conf->ap_settings); 539 os_free(conf->upnp_iface); 540 os_free(conf->friendly_name); 541 os_free(conf->manufacturer_url); 542 os_free(conf->model_description); 543 os_free(conf->model_url); 544 os_free(conf->upc); 545 { 546 unsigned int i; 547 548 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) 549 wpabuf_free(conf->wps_vendor_ext[i]); 550 } 551 wpabuf_free(conf->wps_nfc_dh_pubkey); 552 wpabuf_free(conf->wps_nfc_dh_privkey); 553 wpabuf_free(conf->wps_nfc_dev_pw); 554#endif /* CONFIG_WPS */ 555 556 os_free(conf->roaming_consortium); 557 os_free(conf->venue_name); 558 os_free(conf->nai_realm_data); 559 os_free(conf->network_auth_type); 560 os_free(conf->anqp_3gpp_cell_net); 561 os_free(conf->domain_name); 562 hostapd_config_free_anqp_elem(conf); 563 564#ifdef CONFIG_RADIUS_TEST 565 os_free(conf->dump_msk_file); 566#endif /* CONFIG_RADIUS_TEST */ 567 568#ifdef CONFIG_HS20 569 os_free(conf->hs20_oper_friendly_name); 570 os_free(conf->hs20_wan_metrics); 571 os_free(conf->hs20_connection_capability); 572 os_free(conf->hs20_operating_class); 573 os_free(conf->hs20_icons); 574 if (conf->hs20_osu_providers) { 575 size_t i; 576 for (i = 0; i < conf->hs20_osu_providers_count; i++) { 577 struct hs20_osu_provider *p; 578 size_t j; 579 p = &conf->hs20_osu_providers[i]; 580 os_free(p->friendly_name); 581 os_free(p->server_uri); 582 os_free(p->method_list); 583 for (j = 0; j < p->icons_count; j++) 584 os_free(p->icons[j]); 585 os_free(p->icons); 586 os_free(p->osu_nai); 587 os_free(p->service_desc); 588 } 589 os_free(conf->hs20_osu_providers); 590 } 591 os_free(conf->subscr_remediation_url); 592#endif /* CONFIG_HS20 */ 593 594 wpabuf_free(conf->vendor_elements); 595 wpabuf_free(conf->assocresp_elements); 596 597 os_free(conf->sae_groups); 598 599 os_free(conf->wowlan_triggers); 600 601 os_free(conf->server_id); 602 603#ifdef CONFIG_TESTING_OPTIONS 604 wpabuf_free(conf->own_ie_override); 605#endif /* CONFIG_TESTING_OPTIONS */ 606 607 os_free(conf->no_probe_resp_if_seen_on); 608 os_free(conf->no_auth_if_seen_on); 609 610 hostapd_config_free_fils_realms(conf); 611 612 os_free(conf); 613} 614 615 616/** 617 * hostapd_config_free - Free hostapd configuration 618 * @conf: Configuration data from hostapd_config_read(). 619 */ 620void hostapd_config_free(struct hostapd_config *conf) 621{ 622 size_t i; 623 624 if (conf == NULL) 625 return; 626 627 for (i = 0; i < conf->num_bss; i++) 628 hostapd_config_free_bss(conf->bss[i]); 629 os_free(conf->bss); 630 os_free(conf->supported_rates); 631 os_free(conf->basic_rates); 632 os_free(conf->acs_ch_list.range); 633 os_free(conf->driver_params); 634#ifdef CONFIG_ACS 635 os_free(conf->acs_chan_bias); 636#endif /* CONFIG_ACS */ 637 wpabuf_free(conf->lci); 638 wpabuf_free(conf->civic); 639 640 os_free(conf); 641} 642 643 644/** 645 * hostapd_maclist_found - Find a MAC address from a list 646 * @list: MAC address list 647 * @num_entries: Number of addresses in the list 648 * @addr: Address to search for 649 * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed 650 * Returns: 1 if address is in the list or 0 if not. 651 * 652 * Perform a binary search for given MAC address from a pre-sorted list. 653 */ 654int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries, 655 const u8 *addr, struct vlan_description *vlan_id) 656{ 657 int start, end, middle, res; 658 659 start = 0; 660 end = num_entries - 1; 661 662 while (start <= end) { 663 middle = (start + end) / 2; 664 res = os_memcmp(list[middle].addr, addr, ETH_ALEN); 665 if (res == 0) { 666 if (vlan_id) 667 *vlan_id = list[middle].vlan_id; 668 return 1; 669 } 670 if (res < 0) 671 start = middle + 1; 672 else 673 end = middle - 1; 674 } 675 676 return 0; 677} 678 679 680int hostapd_rate_found(int *list, int rate) 681{ 682 int i; 683 684 if (list == NULL) 685 return 0; 686 687 for (i = 0; list[i] >= 0; i++) 688 if (list[i] == rate) 689 return 1; 690 691 return 0; 692} 693 694 695int hostapd_vlan_valid(struct hostapd_vlan *vlan, 696 struct vlan_description *vlan_desc) 697{ 698 struct hostapd_vlan *v = vlan; 699 int i; 700 701 if (!vlan_desc->notempty || vlan_desc->untagged < 0 || 702 vlan_desc->untagged > MAX_VLAN_ID) 703 return 0; 704 for (i = 0; i < MAX_NUM_TAGGED_VLAN; i++) { 705 if (vlan_desc->tagged[i] < 0 || 706 vlan_desc->tagged[i] > MAX_VLAN_ID) 707 return 0; 708 } 709 if (!vlan_desc->untagged && !vlan_desc->tagged[0]) 710 return 0; 711 712 while (v) { 713 if (!vlan_compare(&v->vlan_desc, vlan_desc) || 714 v->vlan_id == VLAN_ID_WILDCARD) 715 return 1; 716 v = v->next; 717 } 718 return 0; 719} 720 721 722const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id) 723{ 724 struct hostapd_vlan *v = vlan; 725 while (v) { 726 if (v->vlan_id == vlan_id) 727 return v->ifname; 728 v = v->next; 729 } 730 return NULL; 731} 732 733 734const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf, 735 const u8 *addr, const u8 *p2p_dev_addr, 736 const u8 *prev_psk) 737{ 738 struct hostapd_wpa_psk *psk; 739 int next_ok = prev_psk == NULL; 740 741 if (p2p_dev_addr && !is_zero_ether_addr(p2p_dev_addr)) { 742 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR 743 " p2p_dev_addr=" MACSTR " prev_psk=%p", 744 MAC2STR(addr), MAC2STR(p2p_dev_addr), prev_psk); 745 addr = NULL; /* Use P2P Device Address for matching */ 746 } else { 747 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR 748 " prev_psk=%p", 749 MAC2STR(addr), prev_psk); 750 } 751 752 for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) { 753 if (next_ok && 754 (psk->group || 755 (addr && os_memcmp(psk->addr, addr, ETH_ALEN) == 0) || 756 (!addr && p2p_dev_addr && 757 os_memcmp(psk->p2p_dev_addr, p2p_dev_addr, ETH_ALEN) == 758 0))) 759 return psk->psk; 760 761 if (psk->psk == prev_psk) 762 next_ok = 1; 763 } 764 765 return NULL; 766} 767 768 769static int hostapd_config_check_bss(struct hostapd_bss_config *bss, 770 struct hostapd_config *conf, 771 int full_config) 772{ 773 if (full_config && bss->ieee802_1x && !bss->eap_server && 774 !bss->radius->auth_servers) { 775 wpa_printf(MSG_ERROR, "Invalid IEEE 802.1X configuration (no " 776 "EAP authenticator configured)."); 777 return -1; 778 } 779 780 if (bss->wpa) { 781 int wep, i; 782 783 wep = bss->default_wep_key_len > 0 || 784 bss->individual_wep_key_len > 0; 785 for (i = 0; i < NUM_WEP_KEYS; i++) { 786 if (bss->ssid.wep.keys_set) { 787 wep = 1; 788 break; 789 } 790 } 791 792 if (wep) { 793 wpa_printf(MSG_ERROR, "WEP configuration in a WPA network is not supported"); 794 return -1; 795 } 796 } 797 798 if (full_config && bss->wpa && 799 bss->wpa_psk_radius != PSK_RADIUS_IGNORED && 800 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) { 801 wpa_printf(MSG_ERROR, "WPA-PSK using RADIUS enabled, but no " 802 "RADIUS checking (macaddr_acl=2) enabled."); 803 return -1; 804 } 805 806 if (full_config && bss->wpa && (bss->wpa_key_mgmt & WPA_KEY_MGMT_PSK) && 807 bss->ssid.wpa_psk == NULL && bss->ssid.wpa_passphrase == NULL && 808 bss->ssid.wpa_psk_file == NULL && 809 (bss->wpa_psk_radius != PSK_RADIUS_REQUIRED || 810 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH)) { 811 wpa_printf(MSG_ERROR, "WPA-PSK enabled, but PSK or passphrase " 812 "is not configured."); 813 return -1; 814 } 815 816 if (full_config && !is_zero_ether_addr(bss->bssid)) { 817 size_t i; 818 819 for (i = 0; i < conf->num_bss; i++) { 820 if (conf->bss[i] != bss && 821 (hostapd_mac_comp(conf->bss[i]->bssid, 822 bss->bssid) == 0)) { 823 wpa_printf(MSG_ERROR, "Duplicate BSSID " MACSTR 824 " on interface '%s' and '%s'.", 825 MAC2STR(bss->bssid), 826 conf->bss[i]->iface, bss->iface); 827 return -1; 828 } 829 } 830 } 831 832#ifdef CONFIG_IEEE80211R_AP 833 if (full_config && wpa_key_mgmt_ft(bss->wpa_key_mgmt) && 834 (bss->nas_identifier == NULL || 835 os_strlen(bss->nas_identifier) < 1 || 836 os_strlen(bss->nas_identifier) > FT_R0KH_ID_MAX_LEN)) { 837 wpa_printf(MSG_ERROR, "FT (IEEE 802.11r) requires " 838 "nas_identifier to be configured as a 1..48 octet " 839 "string"); 840 return -1; 841 } 842#endif /* CONFIG_IEEE80211R_AP */ 843 844#ifdef CONFIG_IEEE80211N 845 if (full_config && conf->ieee80211n && 846 conf->hw_mode == HOSTAPD_MODE_IEEE80211B) { 847 bss->disable_11n = 1; 848 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) in 11b mode is not " 849 "allowed, disabling HT capabilities"); 850 } 851 852 if (full_config && conf->ieee80211n && 853 bss->ssid.security_policy == SECURITY_STATIC_WEP) { 854 bss->disable_11n = 1; 855 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WEP is not " 856 "allowed, disabling HT capabilities"); 857 } 858 859 if (full_config && conf->ieee80211n && bss->wpa && 860 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) && 861 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | 862 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256))) 863 { 864 bss->disable_11n = 1; 865 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WPA/WPA2 " 866 "requires CCMP/GCMP to be enabled, disabling HT " 867 "capabilities"); 868 } 869#endif /* CONFIG_IEEE80211N */ 870 871#ifdef CONFIG_IEEE80211AC 872 if (full_config && conf->ieee80211ac && 873 bss->ssid.security_policy == SECURITY_STATIC_WEP) { 874 bss->disable_11ac = 1; 875 wpa_printf(MSG_ERROR, 876 "VHT (IEEE 802.11ac) with WEP is not allowed, disabling VHT capabilities"); 877 } 878 879 if (full_config && conf->ieee80211ac && bss->wpa && 880 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) && 881 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | 882 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256))) 883 { 884 bss->disable_11ac = 1; 885 wpa_printf(MSG_ERROR, 886 "VHT (IEEE 802.11ac) with WPA/WPA2 requires CCMP/GCMP to be enabled, disabling VHT capabilities"); 887 } 888#endif /* CONFIG_IEEE80211AC */ 889 890#ifdef CONFIG_WPS 891 if (full_config && bss->wps_state && bss->ignore_broadcast_ssid) { 892 wpa_printf(MSG_INFO, "WPS: ignore_broadcast_ssid " 893 "configuration forced WPS to be disabled"); 894 bss->wps_state = 0; 895 } 896 897 if (full_config && bss->wps_state && 898 bss->ssid.wep.keys_set && bss->wpa == 0) { 899 wpa_printf(MSG_INFO, "WPS: WEP configuration forced WPS to be " 900 "disabled"); 901 bss->wps_state = 0; 902 } 903 904 if (full_config && bss->wps_state && bss->wpa && 905 (!(bss->wpa & 2) || 906 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)))) { 907 wpa_printf(MSG_INFO, "WPS: WPA/TKIP configuration without " 908 "WPA2/CCMP/GCMP forced WPS to be disabled"); 909 bss->wps_state = 0; 910 } 911#endif /* CONFIG_WPS */ 912 913#ifdef CONFIG_HS20 914 if (full_config && bss->hs20 && 915 (!(bss->wpa & 2) || 916 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | 917 WPA_CIPHER_CCMP_256 | 918 WPA_CIPHER_GCMP_256)))) { 919 wpa_printf(MSG_ERROR, "HS 2.0: WPA2-Enterprise/CCMP " 920 "configuration is required for Hotspot 2.0 " 921 "functionality"); 922 return -1; 923 } 924#endif /* CONFIG_HS20 */ 925 926#ifdef CONFIG_MBO 927 if (full_config && bss->mbo_enabled && (bss->wpa & 2) && 928 bss->ieee80211w == NO_MGMT_FRAME_PROTECTION) { 929 wpa_printf(MSG_ERROR, 930 "MBO: PMF needs to be enabled whenever using WPA2 with MBO"); 931 return -1; 932 } 933#endif /* CONFIG_MBO */ 934 935 return 0; 936} 937 938 939static int hostapd_config_check_cw(struct hostapd_config *conf, int queue) 940{ 941 int tx_cwmin = conf->tx_queue[queue].cwmin; 942 int tx_cwmax = conf->tx_queue[queue].cwmax; 943 int ac_cwmin = conf->wmm_ac_params[queue].cwmin; 944 int ac_cwmax = conf->wmm_ac_params[queue].cwmax; 945 946 if (tx_cwmin > tx_cwmax) { 947 wpa_printf(MSG_ERROR, 948 "Invalid TX queue cwMin/cwMax values. cwMin(%d) greater than cwMax(%d)", 949 tx_cwmin, tx_cwmax); 950 return -1; 951 } 952 if (ac_cwmin > ac_cwmax) { 953 wpa_printf(MSG_ERROR, 954 "Invalid WMM AC cwMin/cwMax values. cwMin(%d) greater than cwMax(%d)", 955 ac_cwmin, ac_cwmax); 956 return -1; 957 } 958 return 0; 959} 960 961 962int hostapd_config_check(struct hostapd_config *conf, int full_config) 963{ 964 size_t i; 965 966 if (full_config && conf->ieee80211d && 967 (!conf->country[0] || !conf->country[1])) { 968 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11d without " 969 "setting the country_code"); 970 return -1; 971 } 972 973 if (full_config && conf->ieee80211h && !conf->ieee80211d) { 974 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11h without " 975 "IEEE 802.11d enabled"); 976 return -1; 977 } 978 979 if (full_config && conf->local_pwr_constraint != -1 && 980 !conf->ieee80211d) { 981 wpa_printf(MSG_ERROR, "Cannot add Power Constraint element without Country element"); 982 return -1; 983 } 984 985 if (full_config && conf->spectrum_mgmt_required && 986 conf->local_pwr_constraint == -1) { 987 wpa_printf(MSG_ERROR, "Cannot set Spectrum Management bit without Country and Power Constraint elements"); 988 return -1; 989 } 990 991 for (i = 0; i < NUM_TX_QUEUES; i++) { 992 if (hostapd_config_check_cw(conf, i)) 993 return -1; 994 } 995 996 for (i = 0; i < conf->num_bss; i++) { 997 if (hostapd_config_check_bss(conf->bss[i], conf, full_config)) 998 return -1; 999 } 1000 1001 return 0; 1002} 1003 1004 1005void hostapd_set_security_params(struct hostapd_bss_config *bss, 1006 int full_config) 1007{ 1008 if (bss->individual_wep_key_len == 0) { 1009 /* individual keys are not use; can use key idx0 for 1010 * broadcast keys */ 1011 bss->broadcast_key_idx_min = 0; 1012 } 1013 1014 if ((bss->wpa & 2) && bss->rsn_pairwise == 0) 1015 bss->rsn_pairwise = bss->wpa_pairwise; 1016 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, bss->wpa_pairwise, 1017 bss->rsn_pairwise); 1018 1019 if (full_config) { 1020 bss->radius->auth_server = bss->radius->auth_servers; 1021 bss->radius->acct_server = bss->radius->acct_servers; 1022 } 1023 1024 if (bss->wpa && bss->ieee802_1x) { 1025 bss->ssid.security_policy = SECURITY_WPA; 1026 } else if (bss->wpa) { 1027 bss->ssid.security_policy = SECURITY_WPA_PSK; 1028 } else if (bss->ieee802_1x) { 1029 int cipher = WPA_CIPHER_NONE; 1030 bss->ssid.security_policy = SECURITY_IEEE_802_1X; 1031 bss->ssid.wep.default_len = bss->default_wep_key_len; 1032 if (full_config && bss->default_wep_key_len) { 1033 cipher = bss->default_wep_key_len >= 13 ? 1034 WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40; 1035 } else if (full_config && bss->ssid.wep.keys_set) { 1036 if (bss->ssid.wep.len[0] >= 13) 1037 cipher = WPA_CIPHER_WEP104; 1038 else 1039 cipher = WPA_CIPHER_WEP40; 1040 } 1041 bss->wpa_group = cipher; 1042 bss->wpa_pairwise = cipher; 1043 bss->rsn_pairwise = cipher; 1044 if (full_config) 1045 bss->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA; 1046 } else if (bss->ssid.wep.keys_set) { 1047 int cipher = WPA_CIPHER_WEP40; 1048 if (bss->ssid.wep.len[0] >= 13) 1049 cipher = WPA_CIPHER_WEP104; 1050 bss->ssid.security_policy = SECURITY_STATIC_WEP; 1051 bss->wpa_group = cipher; 1052 bss->wpa_pairwise = cipher; 1053 bss->rsn_pairwise = cipher; 1054 if (full_config) 1055 bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE; 1056 } else if (bss->osen) { 1057 bss->ssid.security_policy = SECURITY_OSEN; 1058 bss->wpa_group = WPA_CIPHER_CCMP; 1059 bss->wpa_pairwise = 0; 1060 bss->rsn_pairwise = WPA_CIPHER_CCMP; 1061 } else { 1062 bss->ssid.security_policy = SECURITY_PLAINTEXT; 1063 if (full_config) { 1064 bss->wpa_group = WPA_CIPHER_NONE; 1065 bss->wpa_pairwise = WPA_CIPHER_NONE; 1066 bss->rsn_pairwise = WPA_CIPHER_NONE; 1067 bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE; 1068 } 1069 } 1070} 1071