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