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