src/ap/ap_config.c

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