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 "crypto/tls.h" 14 #include "radius/radius_client.h" 15 #include "common/ieee802_11_defs.h" 16 #include "common/eapol_common.h" 17 #include "common/dhcp.h" 18 #include "eap_common/eap_wsc_common.h" 19 #include "eap_server/eap.h" 20 #include "wpa_auth.h" 21 #include "sta_info.h" 22 #include "ap_config.h" 23 24 25 static void hostapd_config_free_vlan(struct hostapd_bss_config *bss) 26 { 27 struct hostapd_vlan *vlan, *prev; 28 29 vlan = bss->vlan; 30 prev = NULL; 31 while (vlan) { 32 prev = vlan; 33 vlan = vlan->next; 34 os_free(prev); 35 } 36 37 bss->vlan = NULL; 38 } 39 40 41 #ifndef DEFAULT_WPA_DISABLE_EAPOL_KEY_RETRIES 42 #define DEFAULT_WPA_DISABLE_EAPOL_KEY_RETRIES 0 43 #endif /* DEFAULT_WPA_DISABLE_EAPOL_KEY_RETRIES */ 44 45 void hostapd_config_defaults_bss(struct hostapd_bss_config *bss) 46 { 47 dl_list_init(&bss->anqp_elem); 48 49 bss->logger_syslog_level = HOSTAPD_LEVEL_INFO; 50 bss->logger_stdout_level = HOSTAPD_LEVEL_INFO; 51 bss->logger_syslog = (unsigned int) -1; 52 bss->logger_stdout = (unsigned int) -1; 53 54 bss->auth_algs = WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED; 55 56 bss->wep_rekeying_period = 300; 57 /* use key0 in individual key and key1 in broadcast key */ 58 bss->broadcast_key_idx_min = 1; 59 bss->broadcast_key_idx_max = 2; 60 bss->eap_reauth_period = 3600; 61 62 bss->wpa_group_rekey = 600; 63 bss->wpa_gmk_rekey = 86400; 64 bss->wpa_group_update_count = 4; 65 bss->wpa_pairwise_update_count = 4; 66 bss->wpa_disable_eapol_key_retries = 67 DEFAULT_WPA_DISABLE_EAPOL_KEY_RETRIES; 68 bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK; 69 bss->wpa_pairwise = WPA_CIPHER_TKIP; 70 bss->wpa_group = WPA_CIPHER_TKIP; 71 bss->rsn_pairwise = 0; 72 73 bss->max_num_sta = MAX_STA_COUNT; 74 75 bss->dtim_period = 2; 76 77 bss->radius_server_auth_port = 1812; 78 bss->eap_sim_db_timeout = 1; 79 bss->ap_max_inactivity = AP_MAX_INACTIVITY; 80 bss->eapol_version = EAPOL_VERSION; 81 82 bss->max_listen_interval = 65535; 83 84 bss->pwd_group = 19; /* ECC: GF(p=256) */ 85 86 #ifdef CONFIG_IEEE80211W 87 bss->assoc_sa_query_max_timeout = 1000; 88 bss->assoc_sa_query_retry_timeout = 201; 89 bss->group_mgmt_cipher = WPA_CIPHER_AES_128_CMAC; 90 #endif /* CONFIG_IEEE80211W */ 91 #ifdef EAP_SERVER_FAST 92 /* both anonymous and authenticated provisioning */ 93 bss->eap_fast_prov = 3; 94 bss->pac_key_lifetime = 7 * 24 * 60 * 60; 95 bss->pac_key_refresh_time = 1 * 24 * 60 * 60; 96 #endif /* EAP_SERVER_FAST */ 97 98 /* Set to -1 as defaults depends on HT in setup */ 99 bss->wmm_enabled = -1; 100 101 #ifdef CONFIG_IEEE80211R_AP 102 bss->ft_over_ds = 1; 103 bss->rkh_pos_timeout = 86400; 104 bss->rkh_neg_timeout = 60; 105 bss->rkh_pull_timeout = 1000; 106 bss->rkh_pull_retries = 4; 107 bss->r0_key_lifetime = 1209600; 108 #endif /* CONFIG_IEEE80211R_AP */ 109 110 bss->radius_das_time_window = 300; 111 112 bss->sae_anti_clogging_threshold = 5; 113 bss->sae_sync = 5; 114 115 bss->gas_frag_limit = 1400; 116 117 #ifdef CONFIG_FILS 118 dl_list_init(&bss->fils_realms); 119 bss->fils_hlp_wait_time = 30; 120 bss->dhcp_server_port = DHCP_SERVER_PORT; 121 bss->dhcp_relay_port = DHCP_SERVER_PORT; 122 #endif /* CONFIG_FILS */ 123 124 bss->broadcast_deauth = 1; 125 126 #ifdef CONFIG_MBO 127 bss->mbo_cell_data_conn_pref = -1; 128 #endif /* CONFIG_MBO */ 129 130 /* Disable TLS v1.3 by default for now to avoid interoperability issue. 131 * This can be enabled by default once the implementation has been fully 132 * completed and tested with other implementations. */ 133 bss->tls_flags = TLS_CONN_DISABLE_TLSv1_3; 134 135 bss->send_probe_response = 1; 136 137 #ifdef CONFIG_HS20 138 bss->hs20_release = (HS20_VERSION >> 4) + 1; 139 #endif /* CONFIG_HS20 */ 140 141 /* Default to strict CRL checking. */ 142 bss->check_crl_strict = 1; 143 } 144 145 146 struct hostapd_config * hostapd_config_defaults(void) 147 { 148 #define ecw2cw(ecw) ((1 << (ecw)) - 1) 149 150 struct hostapd_config *conf; 151 struct hostapd_bss_config *bss; 152 const int aCWmin = 4, aCWmax = 10; 153 const struct hostapd_wmm_ac_params ac_bk = 154 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */ 155 const struct hostapd_wmm_ac_params ac_be = 156 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */ 157 const struct hostapd_wmm_ac_params ac_vi = /* video traffic */ 158 { aCWmin - 1, aCWmin, 2, 3008 / 32, 0 }; 159 const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */ 160 { aCWmin - 2, aCWmin - 1, 2, 1504 / 32, 0 }; 161 const struct hostapd_tx_queue_params txq_bk = 162 { 7, ecw2cw(aCWmin), ecw2cw(aCWmax), 0 }; 163 const struct hostapd_tx_queue_params txq_be = 164 { 3, ecw2cw(aCWmin), 4 * (ecw2cw(aCWmin) + 1) - 1, 0}; 165 const struct hostapd_tx_queue_params txq_vi = 166 { 1, (ecw2cw(aCWmin) + 1) / 2 - 1, ecw2cw(aCWmin), 30}; 167 const struct hostapd_tx_queue_params txq_vo = 168 { 1, (ecw2cw(aCWmin) + 1) / 4 - 1, 169 (ecw2cw(aCWmin) + 1) / 2 - 1, 15}; 170 171 #undef ecw2cw 172 173 conf = os_zalloc(sizeof(*conf)); 174 bss = os_zalloc(sizeof(*bss)); 175 if (conf == NULL || bss == NULL) { 176 wpa_printf(MSG_ERROR, "Failed to allocate memory for " 177 "configuration data."); 178 os_free(conf); 179 os_free(bss); 180 return NULL; 181 } 182 conf->bss = os_calloc(1, sizeof(struct hostapd_bss_config *)); 183 if (conf->bss == NULL) { 184 os_free(conf); 185 os_free(bss); 186 return NULL; 187 } 188 conf->bss[0] = bss; 189 190 bss->radius = os_zalloc(sizeof(*bss->radius)); 191 if (bss->radius == NULL) { 192 os_free(conf->bss); 193 os_free(conf); 194 os_free(bss); 195 return NULL; 196 } 197 198 hostapd_config_defaults_bss(bss); 199 200 conf->num_bss = 1; 201 202 conf->beacon_int = 100; 203 conf->rts_threshold = -2; /* use driver default: 2347 */ 204 conf->fragm_threshold = -2; /* user driver default: 2346 */ 205 /* Set to invalid value means do not add Power Constraint IE */ 206 conf->local_pwr_constraint = -1; 207 208 conf->wmm_ac_params[0] = ac_be; 209 conf->wmm_ac_params[1] = ac_bk; 210 conf->wmm_ac_params[2] = ac_vi; 211 conf->wmm_ac_params[3] = ac_vo; 212 213 conf->tx_queue[0] = txq_vo; 214 conf->tx_queue[1] = txq_vi; 215 conf->tx_queue[2] = txq_be; 216 conf->tx_queue[3] = txq_bk; 217 218 conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED; 219 220 conf->ap_table_max_size = 255; 221 conf->ap_table_expiration_time = 60; 222 conf->track_sta_max_age = 180; 223 224 #ifdef CONFIG_TESTING_OPTIONS 225 conf->ignore_probe_probability = 0.0; 226 conf->ignore_auth_probability = 0.0; 227 conf->ignore_assoc_probability = 0.0; 228 conf->ignore_reassoc_probability = 0.0; 229 conf->corrupt_gtk_rekey_mic_probability = 0.0; 230 conf->ecsa_ie_only = 0; 231 #endif /* CONFIG_TESTING_OPTIONS */ 232 233 conf->acs = 0; 234 conf->acs_ch_list.num = 0; 235 #ifdef CONFIG_ACS 236 conf->acs_num_scans = 5; 237 #endif /* CONFIG_ACS */ 238 239 /* The third octet of the country string uses an ASCII space character 240 * by default to indicate that the regulations encompass all 241 * environments for the current frequency band in the country. */ 242 conf->country[2] = ' '; 243 244 conf->rssi_reject_assoc_rssi = 0; 245 conf->rssi_reject_assoc_timeout = 30; 246 247 return conf; 248 } 249 250 251 int hostapd_mac_comp(const void *a, const void *b) 252 { 253 return os_memcmp(a, b, sizeof(macaddr)); 254 } 255 256 257 static int hostapd_config_read_wpa_psk(const char *fname, 258 struct hostapd_ssid *ssid) 259 { 260 FILE *f; 261 char buf[128], *pos; 262 const char *keyid; 263 char *context; 264 char *context2; 265 char *token; 266 char *name; 267 char *value; 268 int line = 0, ret = 0, len, ok; 269 u8 addr[ETH_ALEN]; 270 struct hostapd_wpa_psk *psk; 271 272 if (!fname) 273 return 0; 274 275 f = fopen(fname, "r"); 276 if (!f) { 277 wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname); 278 return -1; 279 } 280 281 while (fgets(buf, sizeof(buf), f)) { 282 int vlan_id = 0; 283 284 line++; 285 286 if (buf[0] == '#') 287 continue; 288 pos = buf; 289 while (*pos != '\0') { 290 if (*pos == '\n') { 291 *pos = '\0'; 292 break; 293 } 294 pos++; 295 } 296 if (buf[0] == '\0') 297 continue; 298 299 context = NULL; 300 keyid = NULL; 301 while ((token = str_token(buf, " ", &context))) { 302 if (!os_strchr(token, '=')) 303 break; 304 context2 = NULL; 305 name = str_token(token, "=", &context2); 306 if (!name) 307 break; 308 value = str_token(token, "", &context2); 309 if (!value) 310 value = ""; 311 if (!os_strcmp(name, "keyid")) { 312 keyid = value; 313 } else if (!os_strcmp(name, "vlanid")) { 314 vlan_id = atoi(value); 315 } else { 316 wpa_printf(MSG_ERROR, 317 "Unrecognized '%s=%s' on line %d in '%s'", 318 name, value, line, fname); 319 ret = -1; 320 break; 321 } 322 } 323 324 if (ret == -1) 325 break; 326 327 if (!token) 328 token = ""; 329 if (hwaddr_aton(token, addr)) { 330 wpa_printf(MSG_ERROR, "Invalid MAC address '%s' on " 331 "line %d in '%s'", token, line, fname); 332 ret = -1; 333 break; 334 } 335 336 psk = os_zalloc(sizeof(*psk)); 337 if (psk == NULL) { 338 wpa_printf(MSG_ERROR, "WPA PSK allocation failed"); 339 ret = -1; 340 break; 341 } 342 psk->vlan_id = vlan_id; 343 if (is_zero_ether_addr(addr)) 344 psk->group = 1; 345 else 346 os_memcpy(psk->addr, addr, ETH_ALEN); 347 348 pos = str_token(buf, "", &context); 349 if (!pos) { 350 wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'", 351 line, fname); 352 os_free(psk); 353 ret = -1; 354 break; 355 } 356 357 ok = 0; 358 len = os_strlen(pos); 359 if (len == 64 && hexstr2bin(pos, psk->psk, PMK_LEN) == 0) 360 ok = 1; 361 else if (len >= 8 && len < 64) { 362 pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len, 363 4096, psk->psk, PMK_LEN); 364 ok = 1; 365 } 366 if (!ok) { 367 wpa_printf(MSG_ERROR, "Invalid PSK '%s' on line %d in " 368 "'%s'", pos, line, fname); 369 os_free(psk); 370 ret = -1; 371 break; 372 } 373 374 if (keyid) { 375 len = os_strlcpy(psk->keyid, keyid, sizeof(psk->keyid)); 376 if ((size_t) len >= sizeof(psk->keyid)) { 377 wpa_printf(MSG_ERROR, 378 "PSK keyid too long on line %d in '%s'", 379 line, fname); 380 os_free(psk); 381 ret = -1; 382 break; 383 } 384 } 385 386 psk->next = ssid->wpa_psk; 387 ssid->wpa_psk = psk; 388 } 389 390 fclose(f); 391 392 return ret; 393 } 394 395 396 static int hostapd_derive_psk(struct hostapd_ssid *ssid) 397 { 398 ssid->wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk)); 399 if (ssid->wpa_psk == NULL) { 400 wpa_printf(MSG_ERROR, "Unable to alloc space for PSK"); 401 return -1; 402 } 403 wpa_hexdump_ascii(MSG_DEBUG, "SSID", 404 (u8 *) ssid->ssid, ssid->ssid_len); 405 wpa_hexdump_ascii_key(MSG_DEBUG, "PSK (ASCII passphrase)", 406 (u8 *) ssid->wpa_passphrase, 407 os_strlen(ssid->wpa_passphrase)); 408 pbkdf2_sha1(ssid->wpa_passphrase, 409 ssid->ssid, ssid->ssid_len, 410 4096, ssid->wpa_psk->psk, PMK_LEN); 411 wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)", 412 ssid->wpa_psk->psk, PMK_LEN); 413 return 0; 414 } 415 416 417 int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf) 418 { 419 struct hostapd_ssid *ssid = &conf->ssid; 420 421 if (ssid->wpa_passphrase != NULL) { 422 if (ssid->wpa_psk != NULL) { 423 wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK " 424 "instead of passphrase"); 425 } else { 426 wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on " 427 "passphrase"); 428 if (hostapd_derive_psk(ssid) < 0) 429 return -1; 430 } 431 ssid->wpa_psk->group = 1; 432 } 433 434 return hostapd_config_read_wpa_psk(ssid->wpa_psk_file, &conf->ssid); 435 } 436 437 438 static void hostapd_config_free_radius(struct hostapd_radius_server *servers, 439 int num_servers) 440 { 441 int i; 442 443 for (i = 0; i < num_servers; i++) { 444 os_free(servers[i].shared_secret); 445 } 446 os_free(servers); 447 } 448 449 450 struct hostapd_radius_attr * 451 hostapd_config_get_radius_attr(struct hostapd_radius_attr *attr, u8 type) 452 { 453 for (; attr; attr = attr->next) { 454 if (attr->type == type) 455 return attr; 456 } 457 return NULL; 458 } 459 460 461 static void hostapd_config_free_radius_attr(struct hostapd_radius_attr *attr) 462 { 463 struct hostapd_radius_attr *prev; 464 465 while (attr) { 466 prev = attr; 467 attr = attr->next; 468 wpabuf_free(prev->val); 469 os_free(prev); 470 } 471 } 472 473 474 void hostapd_config_free_eap_user(struct hostapd_eap_user *user) 475 { 476 hostapd_config_free_radius_attr(user->accept_attr); 477 os_free(user->identity); 478 bin_clear_free(user->password, user->password_len); 479 bin_clear_free(user->salt, user->salt_len); 480 os_free(user); 481 } 482 483 484 void hostapd_config_free_eap_users(struct hostapd_eap_user *user) 485 { 486 struct hostapd_eap_user *prev_user; 487 488 while (user) { 489 prev_user = user; 490 user = user->next; 491 hostapd_config_free_eap_user(prev_user); 492 } 493 } 494 495 496 static void hostapd_config_free_wep(struct hostapd_wep_keys *keys) 497 { 498 int i; 499 for (i = 0; i < NUM_WEP_KEYS; i++) { 500 bin_clear_free(keys->key[i], keys->len[i]); 501 keys->key[i] = NULL; 502 } 503 } 504 505 506 void hostapd_config_clear_wpa_psk(struct hostapd_wpa_psk **l) 507 { 508 struct hostapd_wpa_psk *psk, *tmp; 509 510 for (psk = *l; psk;) { 511 tmp = psk; 512 psk = psk->next; 513 bin_clear_free(tmp, sizeof(*tmp)); 514 } 515 *l = NULL; 516 } 517 518 519 static void hostapd_config_free_anqp_elem(struct hostapd_bss_config *conf) 520 { 521 struct anqp_element *elem; 522 523 while ((elem = dl_list_first(&conf->anqp_elem, struct anqp_element, 524 list))) { 525 dl_list_del(&elem->list); 526 wpabuf_free(elem->payload); 527 os_free(elem); 528 } 529 } 530 531 532 static void hostapd_config_free_fils_realms(struct hostapd_bss_config *conf) 533 { 534 #ifdef CONFIG_FILS 535 struct fils_realm *realm; 536 537 while ((realm = dl_list_first(&conf->fils_realms, struct fils_realm, 538 list))) { 539 dl_list_del(&realm->list); 540 os_free(realm); 541 } 542 #endif /* CONFIG_FILS */ 543 } 544 545 546 static void hostapd_config_free_sae_passwords(struct hostapd_bss_config *conf) 547 { 548 struct sae_password_entry *pw, *tmp; 549 550 pw = conf->sae_passwords; 551 conf->sae_passwords = NULL; 552 while (pw) { 553 tmp = pw; 554 pw = pw->next; 555 str_clear_free(tmp->password); 556 os_free(tmp->identifier); 557 os_free(tmp); 558 } 559 } 560 561 562 void hostapd_config_free_bss(struct hostapd_bss_config *conf) 563 { 564 if (conf == NULL) 565 return; 566 567 hostapd_config_clear_wpa_psk(&conf->ssid.wpa_psk); 568 569 str_clear_free(conf->ssid.wpa_passphrase); 570 os_free(conf->ssid.wpa_psk_file); 571 hostapd_config_free_wep(&conf->ssid.wep); 572 #ifdef CONFIG_FULL_DYNAMIC_VLAN 573 os_free(conf->ssid.vlan_tagged_interface); 574 #endif /* CONFIG_FULL_DYNAMIC_VLAN */ 575 576 hostapd_config_free_eap_users(conf->eap_user); 577 os_free(conf->eap_user_sqlite); 578 579 os_free(conf->eap_req_id_text); 580 os_free(conf->erp_domain); 581 os_free(conf->accept_mac); 582 os_free(conf->deny_mac); 583 os_free(conf->nas_identifier); 584 if (conf->radius) { 585 hostapd_config_free_radius(conf->radius->auth_servers, 586 conf->radius->num_auth_servers); 587 hostapd_config_free_radius(conf->radius->acct_servers, 588 conf->radius->num_acct_servers); 589 } 590 hostapd_config_free_radius_attr(conf->radius_auth_req_attr); 591 hostapd_config_free_radius_attr(conf->radius_acct_req_attr); 592 os_free(conf->rsn_preauth_interfaces); 593 os_free(conf->ctrl_interface); 594 os_free(conf->ca_cert); 595 os_free(conf->server_cert); 596 os_free(conf->private_key); 597 os_free(conf->private_key_passwd); 598 os_free(conf->check_cert_subject); 599 os_free(conf->ocsp_stapling_response); 600 os_free(conf->ocsp_stapling_response_multi); 601 os_free(conf->dh_file); 602 os_free(conf->openssl_ciphers); 603 os_free(conf->openssl_ecdh_curves); 604 os_free(conf->pac_opaque_encr_key); 605 os_free(conf->eap_fast_a_id); 606 os_free(conf->eap_fast_a_id_info); 607 os_free(conf->eap_sim_db); 608 os_free(conf->radius_server_clients); 609 os_free(conf->radius); 610 os_free(conf->radius_das_shared_secret); 611 hostapd_config_free_vlan(conf); 612 os_free(conf->time_zone); 613 614 #ifdef CONFIG_IEEE80211R_AP 615 { 616 struct ft_remote_r0kh *r0kh, *r0kh_prev; 617 struct ft_remote_r1kh *r1kh, *r1kh_prev; 618 619 r0kh = conf->r0kh_list; 620 conf->r0kh_list = NULL; 621 while (r0kh) { 622 r0kh_prev = r0kh; 623 r0kh = r0kh->next; 624 os_free(r0kh_prev); 625 } 626 627 r1kh = conf->r1kh_list; 628 conf->r1kh_list = NULL; 629 while (r1kh) { 630 r1kh_prev = r1kh; 631 r1kh = r1kh->next; 632 os_free(r1kh_prev); 633 } 634 } 635 #endif /* CONFIG_IEEE80211R_AP */ 636 637 #ifdef CONFIG_WPS 638 os_free(conf->wps_pin_requests); 639 os_free(conf->device_name); 640 os_free(conf->manufacturer); 641 os_free(conf->model_name); 642 os_free(conf->model_number); 643 os_free(conf->serial_number); 644 os_free(conf->config_methods); 645 os_free(conf->ap_pin); 646 os_free(conf->extra_cred); 647 os_free(conf->ap_settings); 648 hostapd_config_clear_wpa_psk(&conf->multi_ap_backhaul_ssid.wpa_psk); 649 str_clear_free(conf->multi_ap_backhaul_ssid.wpa_passphrase); 650 os_free(conf->upnp_iface); 651 os_free(conf->friendly_name); 652 os_free(conf->manufacturer_url); 653 os_free(conf->model_description); 654 os_free(conf->model_url); 655 os_free(conf->upc); 656 { 657 unsigned int i; 658 659 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) 660 wpabuf_free(conf->wps_vendor_ext[i]); 661 } 662 wpabuf_free(conf->wps_nfc_dh_pubkey); 663 wpabuf_free(conf->wps_nfc_dh_privkey); 664 wpabuf_free(conf->wps_nfc_dev_pw); 665 #endif /* CONFIG_WPS */ 666 667 os_free(conf->roaming_consortium); 668 os_free(conf->venue_name); 669 os_free(conf->venue_url); 670 os_free(conf->nai_realm_data); 671 os_free(conf->network_auth_type); 672 os_free(conf->anqp_3gpp_cell_net); 673 os_free(conf->domain_name); 674 hostapd_config_free_anqp_elem(conf); 675 676 #ifdef CONFIG_RADIUS_TEST 677 os_free(conf->dump_msk_file); 678 #endif /* CONFIG_RADIUS_TEST */ 679 680 #ifdef CONFIG_HS20 681 os_free(conf->hs20_oper_friendly_name); 682 os_free(conf->hs20_wan_metrics); 683 os_free(conf->hs20_connection_capability); 684 os_free(conf->hs20_operating_class); 685 os_free(conf->hs20_icons); 686 if (conf->hs20_osu_providers) { 687 size_t i; 688 for (i = 0; i < conf->hs20_osu_providers_count; i++) { 689 struct hs20_osu_provider *p; 690 size_t j; 691 p = &conf->hs20_osu_providers[i]; 692 os_free(p->friendly_name); 693 os_free(p->server_uri); 694 os_free(p->method_list); 695 for (j = 0; j < p->icons_count; j++) 696 os_free(p->icons[j]); 697 os_free(p->icons); 698 os_free(p->osu_nai); 699 os_free(p->osu_nai2); 700 os_free(p->service_desc); 701 } 702 os_free(conf->hs20_osu_providers); 703 } 704 if (conf->hs20_operator_icon) { 705 size_t i; 706 707 for (i = 0; i < conf->hs20_operator_icon_count; i++) 708 os_free(conf->hs20_operator_icon[i]); 709 os_free(conf->hs20_operator_icon); 710 } 711 os_free(conf->subscr_remediation_url); 712 os_free(conf->hs20_sim_provisioning_url); 713 os_free(conf->t_c_filename); 714 os_free(conf->t_c_server_url); 715 #endif /* CONFIG_HS20 */ 716 717 wpabuf_free(conf->vendor_elements); 718 wpabuf_free(conf->assocresp_elements); 719 720 os_free(conf->sae_groups); 721 #ifdef CONFIG_OWE 722 os_free(conf->owe_groups); 723 #endif /* CONFIG_OWE */ 724 725 os_free(conf->wowlan_triggers); 726 727 os_free(conf->server_id); 728 729 #ifdef CONFIG_TESTING_OPTIONS 730 wpabuf_free(conf->own_ie_override); 731 wpabuf_free(conf->sae_commit_override); 732 #endif /* CONFIG_TESTING_OPTIONS */ 733 734 os_free(conf->no_probe_resp_if_seen_on); 735 os_free(conf->no_auth_if_seen_on); 736 737 hostapd_config_free_fils_realms(conf); 738 739 #ifdef CONFIG_DPP 740 os_free(conf->dpp_connector); 741 wpabuf_free(conf->dpp_netaccesskey); 742 wpabuf_free(conf->dpp_csign); 743 #endif /* CONFIG_DPP */ 744 745 hostapd_config_free_sae_passwords(conf); 746 747 os_free(conf); 748 } 749 750 751 /** 752 * hostapd_config_free - Free hostapd configuration 753 * @conf: Configuration data from hostapd_config_read(). 754 */ 755 void hostapd_config_free(struct hostapd_config *conf) 756 { 757 size_t i; 758 759 if (conf == NULL) 760 return; 761 762 for (i = 0; i < conf->num_bss; i++) 763 hostapd_config_free_bss(conf->bss[i]); 764 os_free(conf->bss); 765 os_free(conf->supported_rates); 766 os_free(conf->basic_rates); 767 os_free(conf->acs_ch_list.range); 768 os_free(conf->driver_params); 769 #ifdef CONFIG_ACS 770 os_free(conf->acs_chan_bias); 771 #endif /* CONFIG_ACS */ 772 wpabuf_free(conf->lci); 773 wpabuf_free(conf->civic); 774 775 os_free(conf); 776 } 777 778 779 /** 780 * hostapd_maclist_found - Find a MAC address from a list 781 * @list: MAC address list 782 * @num_entries: Number of addresses in the list 783 * @addr: Address to search for 784 * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed 785 * Returns: 1 if address is in the list or 0 if not. 786 * 787 * Perform a binary search for given MAC address from a pre-sorted list. 788 */ 789 int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries, 790 const u8 *addr, struct vlan_description *vlan_id) 791 { 792 int start, end, middle, res; 793 794 start = 0; 795 end = num_entries - 1; 796 797 while (start <= end) { 798 middle = (start + end) / 2; 799 res = os_memcmp(list[middle].addr, addr, ETH_ALEN); 800 if (res == 0) { 801 if (vlan_id) 802 *vlan_id = list[middle].vlan_id; 803 return 1; 804 } 805 if (res < 0) 806 start = middle + 1; 807 else 808 end = middle - 1; 809 } 810 811 return 0; 812 } 813 814 815 int hostapd_rate_found(int *list, int rate) 816 { 817 int i; 818 819 if (list == NULL) 820 return 0; 821 822 for (i = 0; list[i] >= 0; i++) 823 if (list[i] == rate) 824 return 1; 825 826 return 0; 827 } 828 829 830 int hostapd_vlan_valid(struct hostapd_vlan *vlan, 831 struct vlan_description *vlan_desc) 832 { 833 struct hostapd_vlan *v = vlan; 834 int i; 835 836 if (!vlan_desc->notempty || vlan_desc->untagged < 0 || 837 vlan_desc->untagged > MAX_VLAN_ID) 838 return 0; 839 for (i = 0; i < MAX_NUM_TAGGED_VLAN; i++) { 840 if (vlan_desc->tagged[i] < 0 || 841 vlan_desc->tagged[i] > MAX_VLAN_ID) 842 return 0; 843 } 844 if (!vlan_desc->untagged && !vlan_desc->tagged[0]) 845 return 0; 846 847 while (v) { 848 if (!vlan_compare(&v->vlan_desc, vlan_desc) || 849 v->vlan_id == VLAN_ID_WILDCARD) 850 return 1; 851 v = v->next; 852 } 853 return 0; 854 } 855 856 857 const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id) 858 { 859 struct hostapd_vlan *v = vlan; 860 while (v) { 861 if (v->vlan_id == vlan_id) 862 return v->ifname; 863 v = v->next; 864 } 865 return NULL; 866 } 867 868 869 const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf, 870 const u8 *addr, const u8 *p2p_dev_addr, 871 const u8 *prev_psk, int *vlan_id) 872 { 873 struct hostapd_wpa_psk *psk; 874 int next_ok = prev_psk == NULL; 875 876 if (vlan_id) 877 *vlan_id = 0; 878 879 if (p2p_dev_addr && !is_zero_ether_addr(p2p_dev_addr)) { 880 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR 881 " p2p_dev_addr=" MACSTR " prev_psk=%p", 882 MAC2STR(addr), MAC2STR(p2p_dev_addr), prev_psk); 883 addr = NULL; /* Use P2P Device Address for matching */ 884 } else { 885 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR 886 " prev_psk=%p", 887 MAC2STR(addr), prev_psk); 888 } 889 890 for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) { 891 if (next_ok && 892 (psk->group || 893 (addr && os_memcmp(psk->addr, addr, ETH_ALEN) == 0) || 894 (!addr && p2p_dev_addr && 895 os_memcmp(psk->p2p_dev_addr, p2p_dev_addr, ETH_ALEN) == 896 0))) { 897 if (vlan_id) 898 *vlan_id = psk->vlan_id; 899 return psk->psk; 900 } 901 902 if (psk->psk == prev_psk) 903 next_ok = 1; 904 } 905 906 return NULL; 907 } 908 909 910 static int hostapd_config_check_bss(struct hostapd_bss_config *bss, 911 struct hostapd_config *conf, 912 int full_config) 913 { 914 if (full_config && bss->ieee802_1x && !bss->eap_server && 915 !bss->radius->auth_servers) { 916 wpa_printf(MSG_ERROR, "Invalid IEEE 802.1X configuration (no " 917 "EAP authenticator configured)."); 918 return -1; 919 } 920 921 if (bss->wpa) { 922 int wep, i; 923 924 wep = bss->default_wep_key_len > 0 || 925 bss->individual_wep_key_len > 0; 926 for (i = 0; i < NUM_WEP_KEYS; i++) { 927 if (bss->ssid.wep.keys_set) { 928 wep = 1; 929 break; 930 } 931 } 932 933 if (wep) { 934 wpa_printf(MSG_ERROR, "WEP configuration in a WPA network is not supported"); 935 return -1; 936 } 937 } 938 939 if (full_config && bss->wpa && 940 bss->wpa_psk_radius != PSK_RADIUS_IGNORED && 941 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) { 942 wpa_printf(MSG_ERROR, "WPA-PSK using RADIUS enabled, but no " 943 "RADIUS checking (macaddr_acl=2) enabled."); 944 return -1; 945 } 946 947 if (full_config && bss->wpa && (bss->wpa_key_mgmt & WPA_KEY_MGMT_PSK) && 948 bss->ssid.wpa_psk == NULL && bss->ssid.wpa_passphrase == NULL && 949 bss->ssid.wpa_psk_file == NULL && 950 (bss->wpa_psk_radius != PSK_RADIUS_REQUIRED || 951 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH)) { 952 wpa_printf(MSG_ERROR, "WPA-PSK enabled, but PSK or passphrase " 953 "is not configured."); 954 return -1; 955 } 956 957 if (full_config && !is_zero_ether_addr(bss->bssid)) { 958 size_t i; 959 960 for (i = 0; i < conf->num_bss; i++) { 961 if (conf->bss[i] != bss && 962 (hostapd_mac_comp(conf->bss[i]->bssid, 963 bss->bssid) == 0)) { 964 wpa_printf(MSG_ERROR, "Duplicate BSSID " MACSTR 965 " on interface '%s' and '%s'.", 966 MAC2STR(bss->bssid), 967 conf->bss[i]->iface, bss->iface); 968 return -1; 969 } 970 } 971 } 972 973 #ifdef CONFIG_IEEE80211R_AP 974 if (full_config && wpa_key_mgmt_ft(bss->wpa_key_mgmt) && 975 (bss->nas_identifier == NULL || 976 os_strlen(bss->nas_identifier) < 1 || 977 os_strlen(bss->nas_identifier) > FT_R0KH_ID_MAX_LEN)) { 978 wpa_printf(MSG_ERROR, "FT (IEEE 802.11r) requires " 979 "nas_identifier to be configured as a 1..48 octet " 980 "string"); 981 return -1; 982 } 983 #endif /* CONFIG_IEEE80211R_AP */ 984 985 #ifdef CONFIG_IEEE80211N 986 if (full_config && conf->ieee80211n && 987 conf->hw_mode == HOSTAPD_MODE_IEEE80211B) { 988 bss->disable_11n = 1; 989 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) in 11b mode is not " 990 "allowed, disabling HT capabilities"); 991 } 992 993 if (full_config && conf->ieee80211n && 994 bss->ssid.security_policy == SECURITY_STATIC_WEP) { 995 bss->disable_11n = 1; 996 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WEP is not " 997 "allowed, disabling HT capabilities"); 998 } 999 1000 if (full_config && conf->ieee80211n && bss->wpa && 1001 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) && 1002 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | 1003 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256))) 1004 { 1005 bss->disable_11n = 1; 1006 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WPA/WPA2 " 1007 "requires CCMP/GCMP to be enabled, disabling HT " 1008 "capabilities"); 1009 } 1010 #endif /* CONFIG_IEEE80211N */ 1011 1012 #ifdef CONFIG_IEEE80211AC 1013 if (full_config && conf->ieee80211ac && 1014 bss->ssid.security_policy == SECURITY_STATIC_WEP) { 1015 bss->disable_11ac = 1; 1016 wpa_printf(MSG_ERROR, 1017 "VHT (IEEE 802.11ac) with WEP is not allowed, disabling VHT capabilities"); 1018 } 1019 1020 if (full_config && conf->ieee80211ac && bss->wpa && 1021 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) && 1022 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | 1023 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256))) 1024 { 1025 bss->disable_11ac = 1; 1026 wpa_printf(MSG_ERROR, 1027 "VHT (IEEE 802.11ac) with WPA/WPA2 requires CCMP/GCMP to be enabled, disabling VHT capabilities"); 1028 } 1029 #endif /* CONFIG_IEEE80211AC */ 1030 1031 #ifdef CONFIG_WPS 1032 if (full_config && bss->wps_state && bss->ignore_broadcast_ssid) { 1033 wpa_printf(MSG_INFO, "WPS: ignore_broadcast_ssid " 1034 "configuration forced WPS to be disabled"); 1035 bss->wps_state = 0; 1036 } 1037 1038 if (full_config && bss->wps_state && 1039 bss->ssid.wep.keys_set && bss->wpa == 0) { 1040 wpa_printf(MSG_INFO, "WPS: WEP configuration forced WPS to be " 1041 "disabled"); 1042 bss->wps_state = 0; 1043 } 1044 1045 if (full_config && bss->wps_state && bss->wpa && 1046 (!(bss->wpa & 2) || 1047 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | 1048 WPA_CIPHER_CCMP_256 | 1049 WPA_CIPHER_GCMP_256)))) { 1050 wpa_printf(MSG_INFO, "WPS: WPA/TKIP configuration without " 1051 "WPA2/CCMP/GCMP forced WPS to be disabled"); 1052 bss->wps_state = 0; 1053 } 1054 #endif /* CONFIG_WPS */ 1055 1056 #ifdef CONFIG_HS20 1057 if (full_config && bss->hs20 && 1058 (!(bss->wpa & 2) || 1059 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | 1060 WPA_CIPHER_CCMP_256 | 1061 WPA_CIPHER_GCMP_256)))) { 1062 wpa_printf(MSG_ERROR, "HS 2.0: WPA2-Enterprise/CCMP " 1063 "configuration is required for Hotspot 2.0 " 1064 "functionality"); 1065 return -1; 1066 } 1067 #endif /* CONFIG_HS20 */ 1068 1069 #ifdef CONFIG_MBO 1070 if (full_config && bss->mbo_enabled && (bss->wpa & 2) && 1071 bss->ieee80211w == NO_MGMT_FRAME_PROTECTION) { 1072 wpa_printf(MSG_ERROR, 1073 "MBO: PMF needs to be enabled whenever using WPA2 with MBO"); 1074 return -1; 1075 } 1076 #endif /* CONFIG_MBO */ 1077 1078 #ifdef CONFIG_OCV 1079 if (full_config && bss->ieee80211w == NO_MGMT_FRAME_PROTECTION && 1080 bss->ocv) { 1081 wpa_printf(MSG_ERROR, 1082 "OCV: PMF needs to be enabled whenever using OCV"); 1083 return -1; 1084 } 1085 #endif /* CONFIG_OCV */ 1086 1087 return 0; 1088 } 1089 1090 1091 static int hostapd_config_check_cw(struct hostapd_config *conf, int queue) 1092 { 1093 int tx_cwmin = conf->tx_queue[queue].cwmin; 1094 int tx_cwmax = conf->tx_queue[queue].cwmax; 1095 int ac_cwmin = conf->wmm_ac_params[queue].cwmin; 1096 int ac_cwmax = conf->wmm_ac_params[queue].cwmax; 1097 1098 if (tx_cwmin > tx_cwmax) { 1099 wpa_printf(MSG_ERROR, 1100 "Invalid TX queue cwMin/cwMax values. cwMin(%d) greater than cwMax(%d)", 1101 tx_cwmin, tx_cwmax); 1102 return -1; 1103 } 1104 if (ac_cwmin > ac_cwmax) { 1105 wpa_printf(MSG_ERROR, 1106 "Invalid WMM AC cwMin/cwMax values. cwMin(%d) greater than cwMax(%d)", 1107 ac_cwmin, ac_cwmax); 1108 return -1; 1109 } 1110 return 0; 1111 } 1112 1113 1114 int hostapd_config_check(struct hostapd_config *conf, int full_config) 1115 { 1116 size_t i; 1117 1118 if (full_config && conf->ieee80211d && 1119 (!conf->country[0] || !conf->country[1])) { 1120 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11d without " 1121 "setting the country_code"); 1122 return -1; 1123 } 1124 1125 if (full_config && conf->ieee80211h && !conf->ieee80211d) { 1126 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11h without " 1127 "IEEE 802.11d enabled"); 1128 return -1; 1129 } 1130 1131 if (full_config && conf->local_pwr_constraint != -1 && 1132 !conf->ieee80211d) { 1133 wpa_printf(MSG_ERROR, "Cannot add Power Constraint element without Country element"); 1134 return -1; 1135 } 1136 1137 if (full_config && conf->spectrum_mgmt_required && 1138 conf->local_pwr_constraint == -1) { 1139 wpa_printf(MSG_ERROR, "Cannot set Spectrum Management bit without Country and Power Constraint elements"); 1140 return -1; 1141 } 1142 1143 for (i = 0; i < NUM_TX_QUEUES; i++) { 1144 if (hostapd_config_check_cw(conf, i)) 1145 return -1; 1146 } 1147 1148 for (i = 0; i < conf->num_bss; i++) { 1149 if (hostapd_config_check_bss(conf->bss[i], conf, full_config)) 1150 return -1; 1151 } 1152 1153 return 0; 1154 } 1155 1156 1157 void hostapd_set_security_params(struct hostapd_bss_config *bss, 1158 int full_config) 1159 { 1160 if (bss->individual_wep_key_len == 0) { 1161 /* individual keys are not use; can use key idx0 for 1162 * broadcast keys */ 1163 bss->broadcast_key_idx_min = 0; 1164 } 1165 1166 if ((bss->wpa & 2) && bss->rsn_pairwise == 0) 1167 bss->rsn_pairwise = bss->wpa_pairwise; 1168 if (bss->group_cipher) 1169 bss->wpa_group = bss->group_cipher; 1170 else 1171 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, 1172 bss->wpa_pairwise, 1173 bss->rsn_pairwise); 1174 if (!bss->wpa_group_rekey_set) 1175 bss->wpa_group_rekey = bss->wpa_group == WPA_CIPHER_TKIP ? 1176 600 : 86400; 1177 1178 if (full_config) { 1179 bss->radius->auth_server = bss->radius->auth_servers; 1180 bss->radius->acct_server = bss->radius->acct_servers; 1181 } 1182 1183 if (bss->wpa && bss->ieee802_1x) { 1184 bss->ssid.security_policy = SECURITY_WPA; 1185 } else if (bss->wpa) { 1186 bss->ssid.security_policy = SECURITY_WPA_PSK; 1187 } else if (bss->ieee802_1x) { 1188 int cipher = WPA_CIPHER_NONE; 1189 bss->ssid.security_policy = SECURITY_IEEE_802_1X; 1190 bss->ssid.wep.default_len = bss->default_wep_key_len; 1191 if (full_config && bss->default_wep_key_len) { 1192 cipher = bss->default_wep_key_len >= 13 ? 1193 WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40; 1194 } else if (full_config && bss->ssid.wep.keys_set) { 1195 if (bss->ssid.wep.len[0] >= 13) 1196 cipher = WPA_CIPHER_WEP104; 1197 else 1198 cipher = WPA_CIPHER_WEP40; 1199 } 1200 bss->wpa_group = cipher; 1201 bss->wpa_pairwise = cipher; 1202 bss->rsn_pairwise = cipher; 1203 if (full_config) 1204 bss->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA; 1205 } else if (bss->ssid.wep.keys_set) { 1206 int cipher = WPA_CIPHER_WEP40; 1207 if (bss->ssid.wep.len[0] >= 13) 1208 cipher = WPA_CIPHER_WEP104; 1209 bss->ssid.security_policy = SECURITY_STATIC_WEP; 1210 bss->wpa_group = cipher; 1211 bss->wpa_pairwise = cipher; 1212 bss->rsn_pairwise = cipher; 1213 if (full_config) 1214 bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE; 1215 } else if (bss->osen) { 1216 bss->ssid.security_policy = SECURITY_OSEN; 1217 bss->wpa_group = WPA_CIPHER_CCMP; 1218 bss->wpa_pairwise = 0; 1219 bss->rsn_pairwise = WPA_CIPHER_CCMP; 1220 } else { 1221 bss->ssid.security_policy = SECURITY_PLAINTEXT; 1222 if (full_config) { 1223 bss->wpa_group = WPA_CIPHER_NONE; 1224 bss->wpa_pairwise = WPA_CIPHER_NONE; 1225 bss->rsn_pairwise = WPA_CIPHER_NONE; 1226 bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE; 1227 } 1228 } 1229 } 1230 1231 1232 int hostapd_sae_pw_id_in_use(struct hostapd_bss_config *conf) 1233 { 1234 int with_id = 0, without_id = 0; 1235 struct sae_password_entry *pw; 1236 1237 if (conf->ssid.wpa_passphrase) 1238 without_id = 1; 1239 1240 for (pw = conf->sae_passwords; pw; pw = pw->next) { 1241 if (pw->identifier) 1242 with_id = 1; 1243 else 1244 without_id = 1; 1245 if (with_id && without_id) 1246 break; 1247 } 1248 1249 if (with_id && !without_id) 1250 return 2; 1251 return with_id; 1252 } 1253
