contrib/hostapd/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         bss->logger_syslog_level = HOSTAPD_LEVEL_INFO;
  42         bss->logger_stdout_level = HOSTAPD_LEVEL_INFO;
  43         bss->logger_syslog = (unsigned int) -1;
  44         bss->logger_stdout = (unsigned int) -1;
  45
  46         bss->auth_algs = WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED;
  47
  48         bss->wep_rekeying_period = 300;
  49         /* use key0 in individual key and key1 in broadcast key */
  50         bss->broadcast_key_idx_min = 1;
  51         bss->broadcast_key_idx_max = 2;
  52         bss->eap_reauth_period = 3600;
  53
  54         bss->wpa_group_rekey = 600;
  55         bss->wpa_gmk_rekey = 86400;
  56         bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK;
  57         bss->wpa_pairwise = WPA_CIPHER_TKIP;
  58         bss->wpa_group = WPA_CIPHER_TKIP;
  59         bss->rsn_pairwise = 0;
  60
  61         bss->max_num_sta = MAX_STA_COUNT;
  62
  63         bss->dtim_period = 2;
  64
  65         bss->radius_server_auth_port = 1812;
  66         bss->ap_max_inactivity = AP_MAX_INACTIVITY;
  67         bss->eapol_version = EAPOL_VERSION;
  68
  69         bss->max_listen_interval = 65535;
  70
  71         bss->pwd_group = 19; /* ECC: GF(p=256) */
  72
  73 #ifdef CONFIG_IEEE80211W
  74         bss->assoc_sa_query_max_timeout = 1000;
  75         bss->assoc_sa_query_retry_timeout = 201;
  76 #endif /* CONFIG_IEEE80211W */
  77 #ifdef EAP_SERVER_FAST
  78          /* both anonymous and authenticated provisioning */
  79         bss->eap_fast_prov = 3;
  80         bss->pac_key_lifetime = 7 * 24 * 60 * 60;
  81         bss->pac_key_refresh_time = 1 * 24 * 60 * 60;
  82 #endif /* EAP_SERVER_FAST */
  83
  84         /* Set to -1 as defaults depends on HT in setup */
  85         bss->wmm_enabled = -1;
  86
  87 #ifdef CONFIG_IEEE80211R
  88         bss->ft_over_ds = 1;
  89 #endif /* CONFIG_IEEE80211R */
  90
  91         bss->radius_das_time_window = 300;
  92
  93         bss->sae_anti_clogging_threshold = 5;
  94 }
  95
  96
  97 struct hostapd_config * hostapd_config_defaults(void)
  98 {
  99 #define ecw2cw(ecw) ((1 << (ecw)) - 1)
 100
 101         struct hostapd_config *conf;
 102         struct hostapd_bss_config *bss;
 103         const int aCWmin = 4, aCWmax = 10;
 104         const struct hostapd_wmm_ac_params ac_bk =
 105                 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
 106         const struct hostapd_wmm_ac_params ac_be =
 107                 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
 108         const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
 109                 { aCWmin - 1, aCWmin, 2, 3000 / 32, 0 };
 110         const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
 111                 { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 };
 112         const struct hostapd_tx_queue_params txq_bk =
 113                 { 7, ecw2cw(aCWmin), ecw2cw(aCWmax), 0 };
 114         const struct hostapd_tx_queue_params txq_be =
 115                 { 3, ecw2cw(aCWmin), 4 * (ecw2cw(aCWmin) + 1) - 1, 0};
 116         const struct hostapd_tx_queue_params txq_vi =
 117                 { 1, (ecw2cw(aCWmin) + 1) / 2 - 1, ecw2cw(aCWmin), 30};
 118         const struct hostapd_tx_queue_params txq_vo =
 119                 { 1, (ecw2cw(aCWmin) + 1) / 4 - 1,
 120                   (ecw2cw(aCWmin) + 1) / 2 - 1, 15};
 121
 122 #undef ecw2cw
 123
 124         conf = os_zalloc(sizeof(*conf));
 125         bss = os_zalloc(sizeof(*bss));
 126         if (conf == NULL || bss == NULL) {
 127                 wpa_printf(MSG_ERROR, "Failed to allocate memory for "
 128                            "configuration data.");
 129                 os_free(conf);
 130                 os_free(bss);
 131                 return NULL;
 132         }
 133         conf->bss = os_calloc(1, sizeof(struct hostapd_bss_config *));
 134         if (conf->bss == NULL) {
 135                 os_free(conf);
 136                 os_free(bss);
 137                 return NULL;
 138         }
 139         conf->bss[0] = bss;
 140
 141         bss->radius = os_zalloc(sizeof(*bss->radius));
 142         if (bss->radius == NULL) {
 143                 os_free(conf->bss);
 144                 os_free(conf);
 145                 os_free(bss);
 146                 return NULL;
 147         }
 148
 149         hostapd_config_defaults_bss(bss);
 150
 151         conf->num_bss = 1;
 152
 153         conf->beacon_int = 100;
 154         conf->rts_threshold = -1; /* use driver default: 2347 */
 155         conf->fragm_threshold = -1; /* user driver default: 2346 */
 156         conf->send_probe_response = 1;
 157
 158         conf->wmm_ac_params[0] = ac_be;
 159         conf->wmm_ac_params[1] = ac_bk;
 160         conf->wmm_ac_params[2] = ac_vi;
 161         conf->wmm_ac_params[3] = ac_vo;
 162
 163         conf->tx_queue[0] = txq_vo;
 164         conf->tx_queue[1] = txq_vi;
 165         conf->tx_queue[2] = txq_be;
 166         conf->tx_queue[3] = txq_bk;
 167
 168         conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED;
 169
 170         conf->ap_table_max_size = 255;
 171         conf->ap_table_expiration_time = 60;
 172
 173 #ifdef CONFIG_TESTING_OPTIONS
 174         conf->ignore_probe_probability = 0.0d;
 175         conf->ignore_auth_probability = 0.0d;
 176         conf->ignore_assoc_probability = 0.0d;
 177         conf->ignore_reassoc_probability = 0.0d;
 178         conf->corrupt_gtk_rekey_mic_probability = 0.0d;
 179 #endif /* CONFIG_TESTING_OPTIONS */
 180
 181 #ifdef CONFIG_ACS
 182         conf->acs_num_scans = 5;
 183 #endif /* CONFIG_ACS */
 184
 185         return conf;
 186 }
 187
 188
 189 int hostapd_mac_comp(const void *a, const void *b)
 190 {
 191         return os_memcmp(a, b, sizeof(macaddr));
 192 }
 193
 194
 195 int hostapd_mac_comp_empty(const void *a)
 196 {
 197         macaddr empty = { 0 };
 198         return os_memcmp(a, empty, sizeof(macaddr));
 199 }
 200
 201
 202 static int hostapd_config_read_wpa_psk(const char *fname,
 203                                        struct hostapd_ssid *ssid)
 204 {
 205         FILE *f;
 206         char buf[128], *pos;
 207         int line = 0, ret = 0, len, ok;
 208         u8 addr[ETH_ALEN];
 209         struct hostapd_wpa_psk *psk;
 210
 211         if (!fname)
 212                 return 0;
 213
 214         f = fopen(fname, "r");
 215         if (!f) {
 216                 wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname);
 217                 return -1;
 218         }
 219
 220         while (fgets(buf, sizeof(buf), f)) {
 221                 line++;
 222
 223                 if (buf[0] == '#')
 224                         continue;
 225                 pos = buf;
 226                 while (*pos != '\0') {
 227                         if (*pos == '\n') {
 228                                 *pos = '\0';
 229                                 break;
 230                         }
 231                         pos++;
 232                 }
 233                 if (buf[0] == '\0')
 234                         continue;
 235
 236                 if (hwaddr_aton(buf, addr)) {
 237                         wpa_printf(MSG_ERROR, "Invalid MAC address '%s' on "
 238                                    "line %d in '%s'", buf, line, fname);
 239                         ret = -1;
 240                         break;
 241                 }
 242
 243                 psk = os_zalloc(sizeof(*psk));
 244                 if (psk == NULL) {
 245                         wpa_printf(MSG_ERROR, "WPA PSK allocation failed");
 246                         ret = -1;
 247                         break;
 248                 }
 249                 if (is_zero_ether_addr(addr))
 250                         psk->group = 1;
 251                 else
 252                         os_memcpy(psk->addr, addr, ETH_ALEN);
 253
 254                 pos = buf + 17;
 255                 if (*pos == '\0') {
 256                         wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'",
 257                                    line, fname);
 258                         os_free(psk);
 259                         ret = -1;
 260                         break;
 261                 }
 262                 pos++;
 263
 264                 ok = 0;
 265                 len = os_strlen(pos);
 266                 if (len == 64 && hexstr2bin(pos, psk->psk, PMK_LEN) == 0)
 267                         ok = 1;
 268                 else if (len >= 8 && len < 64) {
 269                         pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len,
 270                                     4096, psk->psk, PMK_LEN);
 271                         ok = 1;
 272                 }
 273                 if (!ok) {
 274                         wpa_printf(MSG_ERROR, "Invalid PSK '%s' on line %d in "
 275                                    "'%s'", pos, line, fname);
 276                         os_free(psk);
 277                         ret = -1;
 278                         break;
 279                 }
 280
 281                 psk->next = ssid->wpa_psk;
 282                 ssid->wpa_psk = psk;
 283         }
 284
 285         fclose(f);
 286
 287         return ret;
 288 }
 289
 290
 291 static int hostapd_derive_psk(struct hostapd_ssid *ssid)
 292 {
 293         ssid->wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
 294         if (ssid->wpa_psk == NULL) {
 295                 wpa_printf(MSG_ERROR, "Unable to alloc space for PSK");
 296                 return -1;
 297         }
 298         wpa_hexdump_ascii(MSG_DEBUG, "SSID",
 299                           (u8 *) ssid->ssid, ssid->ssid_len);
 300         wpa_hexdump_ascii_key(MSG_DEBUG, "PSK (ASCII passphrase)",
 301                               (u8 *) ssid->wpa_passphrase,
 302                               os_strlen(ssid->wpa_passphrase));
 303         pbkdf2_sha1(ssid->wpa_passphrase,
 304                     ssid->ssid, ssid->ssid_len,
 305                     4096, ssid->wpa_psk->psk, PMK_LEN);
 306         wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)",
 307                         ssid->wpa_psk->psk, PMK_LEN);
 308         return 0;
 309 }
 310
 311
 312 int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf)
 313 {
 314         struct hostapd_ssid *ssid = &conf->ssid;
 315
 316         if (ssid->wpa_passphrase != NULL) {
 317                 if (ssid->wpa_psk != NULL) {
 318                         wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK "
 319                                    "instead of passphrase");
 320                 } else {
 321                         wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on "
 322                                    "passphrase");
 323                         if (hostapd_derive_psk(ssid) < 0)
 324                                 return -1;
 325                 }
 326                 ssid->wpa_psk->group = 1;
 327         }
 328
 329         if (ssid->wpa_psk_file) {
 330                 if (hostapd_config_read_wpa_psk(ssid->wpa_psk_file,
 331                                                 &conf->ssid))
 332                         return -1;
 333         }
 334
 335         return 0;
 336 }
 337
 338
 339 int hostapd_wep_key_cmp(struct hostapd_wep_keys *a, struct hostapd_wep_keys *b)
 340 {
 341         int i;
 342
 343         if (a->idx != b->idx || a->default_len != b->default_len)
 344                 return 1;
 345         for (i = 0; i < NUM_WEP_KEYS; i++)
 346                 if (a->len[i] != b->len[i] ||
 347                     os_memcmp(a->key[i], b->key[i], a->len[i]) != 0)
 348                         return 1;
 349         return 0;
 350 }
 351
 352
 353 static void hostapd_config_free_radius(struct hostapd_radius_server *servers,
 354                                        int num_servers)
 355 {
 356         int i;
 357
 358         for (i = 0; i < num_servers; i++) {
 359                 os_free(servers[i].shared_secret);
 360         }
 361         os_free(servers);
 362 }
 363
 364
 365 struct hostapd_radius_attr *
 366 hostapd_config_get_radius_attr(struct hostapd_radius_attr *attr, u8 type)
 367 {
 368         for (; attr; attr = attr->next) {
 369                 if (attr->type == type)
 370                         return attr;
 371         }
 372         return NULL;
 373 }
 374
 375
 376 static void hostapd_config_free_radius_attr(struct hostapd_radius_attr *attr)
 377 {
 378         struct hostapd_radius_attr *prev;
 379
 380         while (attr) {
 381                 prev = attr;
 382                 attr = attr->next;
 383                 wpabuf_free(prev->val);
 384                 os_free(prev);
 385         }
 386 }
 387
 388
 389 static void hostapd_config_free_eap_user(struct hostapd_eap_user *user)
 390 {
 391         os_free(user->identity);
 392         os_free(user->password);
 393         os_free(user);
 394 }
 395
 396
 397 static void hostapd_config_free_wep(struct hostapd_wep_keys *keys)
 398 {
 399         int i;
 400         for (i = 0; i < NUM_WEP_KEYS; i++) {
 401                 os_free(keys->key[i]);
 402                 keys->key[i] = NULL;
 403         }
 404 }
 405
 406
 407 void hostapd_config_free_bss(struct hostapd_bss_config *conf)
 408 {
 409         struct hostapd_wpa_psk *psk, *prev;
 410         struct hostapd_eap_user *user, *prev_user;
 411
 412         if (conf == NULL)
 413                 return;
 414
 415         psk = conf->ssid.wpa_psk;
 416         while (psk) {
 417                 prev = psk;
 418                 psk = psk->next;
 419                 os_free(prev);
 420         }
 421
 422         os_free(conf->ssid.wpa_passphrase);
 423         os_free(conf->ssid.wpa_psk_file);
 424         hostapd_config_free_wep(&conf->ssid.wep);
 425 #ifdef CONFIG_FULL_DYNAMIC_VLAN
 426         os_free(conf->ssid.vlan_tagged_interface);
 427 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
 428
 429         user = conf->eap_user;
 430         while (user) {
 431                 prev_user = user;
 432                 user = user->next;
 433                 hostapd_config_free_eap_user(prev_user);
 434         }
 435         os_free(conf->eap_user_sqlite);
 436
 437         os_free(conf->eap_req_id_text);
 438         os_free(conf->accept_mac);
 439         os_free(conf->deny_mac);
 440         os_free(conf->nas_identifier);
 441         if (conf->radius) {
 442                 hostapd_config_free_radius(conf->radius->auth_servers,
 443                                            conf->radius->num_auth_servers);
 444                 hostapd_config_free_radius(conf->radius->acct_servers,
 445                                            conf->radius->num_acct_servers);
 446         }
 447         hostapd_config_free_radius_attr(conf->radius_auth_req_attr);
 448         hostapd_config_free_radius_attr(conf->radius_acct_req_attr);
 449         os_free(conf->rsn_preauth_interfaces);
 450         os_free(conf->ctrl_interface);
 451         os_free(conf->ca_cert);
 452         os_free(conf->server_cert);
 453         os_free(conf->private_key);
 454         os_free(conf->private_key_passwd);
 455         os_free(conf->ocsp_stapling_response);
 456         os_free(conf->dh_file);
 457         os_free(conf->pac_opaque_encr_key);
 458         os_free(conf->eap_fast_a_id);
 459         os_free(conf->eap_fast_a_id_info);
 460         os_free(conf->eap_sim_db);
 461         os_free(conf->radius_server_clients);
 462         os_free(conf->test_socket);
 463         os_free(conf->radius);
 464         os_free(conf->radius_das_shared_secret);
 465         hostapd_config_free_vlan(conf);
 466         os_free(conf->time_zone);
 467
 468 #ifdef CONFIG_IEEE80211R
 469         {
 470                 struct ft_remote_r0kh *r0kh, *r0kh_prev;
 471                 struct ft_remote_r1kh *r1kh, *r1kh_prev;
 472
 473                 r0kh = conf->r0kh_list;
 474                 conf->r0kh_list = NULL;
 475                 while (r0kh) {
 476                         r0kh_prev = r0kh;
 477                         r0kh = r0kh->next;
 478                         os_free(r0kh_prev);
 479                 }
 480
 481                 r1kh = conf->r1kh_list;
 482                 conf->r1kh_list = NULL;
 483                 while (r1kh) {
 484                         r1kh_prev = r1kh;
 485                         r1kh = r1kh->next;
 486                         os_free(r1kh_prev);
 487                 }
 488         }
 489 #endif /* CONFIG_IEEE80211R */
 490
 491 #ifdef CONFIG_WPS
 492         os_free(conf->wps_pin_requests);
 493         os_free(conf->device_name);
 494         os_free(conf->manufacturer);
 495         os_free(conf->model_name);
 496         os_free(conf->model_number);
 497         os_free(conf->serial_number);
 498         os_free(conf->config_methods);
 499         os_free(conf->ap_pin);
 500         os_free(conf->extra_cred);
 501         os_free(conf->ap_settings);
 502         os_free(conf->upnp_iface);
 503         os_free(conf->friendly_name);
 504         os_free(conf->manufacturer_url);
 505         os_free(conf->model_description);
 506         os_free(conf->model_url);
 507         os_free(conf->upc);
 508         wpabuf_free(conf->wps_nfc_dh_pubkey);
 509         wpabuf_free(conf->wps_nfc_dh_privkey);
 510         wpabuf_free(conf->wps_nfc_dev_pw);
 511 #endif /* CONFIG_WPS */
 512
 513         os_free(conf->roaming_consortium);
 514         os_free(conf->venue_name);
 515         os_free(conf->nai_realm_data);
 516         os_free(conf->network_auth_type);
 517         os_free(conf->anqp_3gpp_cell_net);
 518         os_free(conf->domain_name);
 519
 520 #ifdef CONFIG_RADIUS_TEST
 521         os_free(conf->dump_msk_file);
 522 #endif /* CONFIG_RADIUS_TEST */
 523
 524 #ifdef CONFIG_HS20
 525         os_free(conf->hs20_oper_friendly_name);
 526         os_free(conf->hs20_wan_metrics);
 527         os_free(conf->hs20_connection_capability);
 528         os_free(conf->hs20_operating_class);
 529 #endif /* CONFIG_HS20 */
 530
 531         wpabuf_free(conf->vendor_elements);
 532
 533         os_free(conf->sae_groups);
 534
 535         os_free(conf->server_id);
 536
 537         os_free(conf);
 538 }
 539
 540
 541 /**
 542  * hostapd_config_free - Free hostapd configuration
 543  * @conf: Configuration data from hostapd_config_read().
 544  */
 545 void hostapd_config_free(struct hostapd_config *conf)
 546 {
 547         size_t i;
 548
 549         if (conf == NULL)
 550                 return;
 551
 552         for (i = 0; i < conf->num_bss; i++)
 553                 hostapd_config_free_bss(conf->bss[i]);
 554         os_free(conf->bss);
 555         os_free(conf->supported_rates);
 556         os_free(conf->basic_rates);
 557
 558         os_free(conf);
 559 }
 560
 561
 562 /**
 563  * hostapd_maclist_found - Find a MAC address from a list
 564  * @list: MAC address list
 565  * @num_entries: Number of addresses in the list
 566  * @addr: Address to search for
 567  * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed
 568  * Returns: 1 if address is in the list or 0 if not.
 569  *
 570  * Perform a binary search for given MAC address from a pre-sorted list.
 571  */
 572 int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries,
 573                           const u8 *addr, int *vlan_id)
 574 {
 575         int start, end, middle, res;
 576
 577         start = 0;
 578         end = num_entries - 1;
 579
 580         while (start <= end) {
 581                 middle = (start + end) / 2;
 582                 res = os_memcmp(list[middle].addr, addr, ETH_ALEN);
 583                 if (res == 0) {
 584                         if (vlan_id)
 585                                 *vlan_id = list[middle].vlan_id;
 586                         return 1;
 587                 }
 588                 if (res < 0)
 589                         start = middle + 1;
 590                 else
 591                         end = middle - 1;
 592         }
 593
 594         return 0;
 595 }
 596
 597
 598 int hostapd_rate_found(int *list, int rate)
 599 {
 600         int i;
 601
 602         if (list == NULL)
 603                 return 0;
 604
 605         for (i = 0; list[i] >= 0; i++)
 606                 if (list[i] == rate)
 607                         return 1;
 608
 609         return 0;
 610 }
 611
 612
 613 int hostapd_vlan_id_valid(struct hostapd_vlan *vlan, int vlan_id)
 614 {
 615         struct hostapd_vlan *v = vlan;
 616         while (v) {
 617                 if (v->vlan_id == vlan_id || v->vlan_id == VLAN_ID_WILDCARD)
 618                         return 1;
 619                 v = v->next;
 620         }
 621         return 0;
 622 }
 623
 624
 625 const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id)
 626 {
 627         struct hostapd_vlan *v = vlan;
 628         while (v) {
 629                 if (v->vlan_id == vlan_id)
 630                         return v->ifname;
 631                 v = v->next;
 632         }
 633         return NULL;
 634 }
 635
 636
 637 const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf,
 638                            const u8 *addr, const u8 *p2p_dev_addr,
 639                            const u8 *prev_psk)
 640 {
 641         struct hostapd_wpa_psk *psk;
 642         int next_ok = prev_psk == NULL;
 643
 644         if (p2p_dev_addr) {
 645                 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR
 646                            " p2p_dev_addr=" MACSTR " prev_psk=%p",
 647                            MAC2STR(addr), MAC2STR(p2p_dev_addr), prev_psk);
 648                 if (!is_zero_ether_addr(p2p_dev_addr))
 649                         addr = NULL; /* Use P2P Device Address for matching */
 650         } else {
 651                 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR
 652                            " prev_psk=%p",
 653                            MAC2STR(addr), prev_psk);
 654         }
 655
 656         for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) {
 657                 if (next_ok &&
 658                     (psk->group ||
 659                      (addr && os_memcmp(psk->addr, addr, ETH_ALEN) == 0) ||
 660                      (!addr && p2p_dev_addr &&
 661                       os_memcmp(psk->p2p_dev_addr, p2p_dev_addr, ETH_ALEN) ==
 662                       0)))
 663                         return psk->psk;
 664
 665                 if (psk->psk == prev_psk)
 666                         next_ok = 1;
 667         }
 668
 669         return NULL;
 670 }
 671
 672
 673 static int hostapd_config_check_bss(struct hostapd_bss_config *bss,
 674                                     struct hostapd_config *conf,
 675                                     int full_config)
 676 {
 677         if (full_config && bss->ieee802_1x && !bss->eap_server &&
 678             !bss->radius->auth_servers) {
 679                 wpa_printf(MSG_ERROR, "Invalid IEEE 802.1X configuration (no "
 680                            "EAP authenticator configured).");
 681                 return -1;
 682         }
 683
 684         if (bss->wpa) {
 685                 int wep, i;
 686
 687                 wep = bss->default_wep_key_len > 0 ||
 688                        bss->individual_wep_key_len > 0;
 689                 for (i = 0; i < NUM_WEP_KEYS; i++) {
 690                         if (bss->ssid.wep.keys_set) {
 691                                 wep = 1;
 692                                 break;
 693                         }
 694                 }
 695
 696                 if (wep) {
 697                         wpa_printf(MSG_ERROR, "WEP configuration in a WPA network is not supported");
 698                         return -1;
 699                 }
 700         }
 701
 702         if (full_config && bss->wpa &&
 703             bss->wpa_psk_radius != PSK_RADIUS_IGNORED &&
 704             bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) {
 705                 wpa_printf(MSG_ERROR, "WPA-PSK using RADIUS enabled, but no "
 706                            "RADIUS checking (macaddr_acl=2) enabled.");
 707                 return -1;
 708         }
 709
 710         if (full_config && bss->wpa && (bss->wpa_key_mgmt & WPA_KEY_MGMT_PSK) &&
 711             bss->ssid.wpa_psk == NULL && bss->ssid.wpa_passphrase == NULL &&
 712             bss->ssid.wpa_psk_file == NULL &&
 713             (bss->wpa_psk_radius != PSK_RADIUS_REQUIRED ||
 714              bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH)) {
 715                 wpa_printf(MSG_ERROR, "WPA-PSK enabled, but PSK or passphrase "
 716                            "is not configured.");
 717                 return -1;
 718         }
 719
 720         if (full_config && hostapd_mac_comp_empty(bss->bssid) != 0) {
 721                 size_t i;
 722
 723                 for (i = 0; i < conf->num_bss; i++) {
 724                         if (conf->bss[i] != bss &&
 725                             (hostapd_mac_comp(conf->bss[i]->bssid,
 726                                               bss->bssid) == 0)) {
 727                                 wpa_printf(MSG_ERROR, "Duplicate BSSID " MACSTR
 728                                            " on interface '%s' and '%s'.",
 729                                            MAC2STR(bss->bssid),
 730                                            conf->bss[i]->iface, bss->iface);
 731                                 return -1;
 732                         }
 733                 }
 734         }
 735
 736 #ifdef CONFIG_IEEE80211R
 737         if (full_config && wpa_key_mgmt_ft(bss->wpa_key_mgmt) &&
 738             (bss->nas_identifier == NULL ||
 739              os_strlen(bss->nas_identifier) < 1 ||
 740              os_strlen(bss->nas_identifier) > FT_R0KH_ID_MAX_LEN)) {
 741                 wpa_printf(MSG_ERROR, "FT (IEEE 802.11r) requires "
 742                            "nas_identifier to be configured as a 1..48 octet "
 743                            "string");
 744                 return -1;
 745         }
 746 #endif /* CONFIG_IEEE80211R */
 747
 748 #ifdef CONFIG_IEEE80211N
 749         if (full_config && conf->ieee80211n &&
 750             conf->hw_mode == HOSTAPD_MODE_IEEE80211B) {
 751                 bss->disable_11n = 1;
 752                 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) in 11b mode is not "
 753                            "allowed, disabling HT capabilites");
 754         }
 755
 756         if (full_config && conf->ieee80211n &&
 757             bss->ssid.security_policy == SECURITY_STATIC_WEP) {
 758                 bss->disable_11n = 1;
 759                 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WEP is not "
 760                            "allowed, disabling HT capabilities");
 761         }
 762
 763         if (full_config && conf->ieee80211n && bss->wpa &&
 764             !(bss->wpa_pairwise & WPA_CIPHER_CCMP) &&
 765             !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
 766                                    WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256)))
 767         {
 768                 bss->disable_11n = 1;
 769                 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WPA/WPA2 "
 770                            "requires CCMP/GCMP to be enabled, disabling HT "
 771                            "capabilities");
 772         }
 773 #endif /* CONFIG_IEEE80211N */
 774
 775 #ifdef CONFIG_WPS2
 776         if (full_config && bss->wps_state && bss->ignore_broadcast_ssid) {
 777                 wpa_printf(MSG_INFO, "WPS: ignore_broadcast_ssid "
 778                            "configuration forced WPS to be disabled");
 779                 bss->wps_state = 0;
 780         }
 781
 782         if (full_config && bss->wps_state &&
 783             bss->ssid.wep.keys_set && bss->wpa == 0) {
 784                 wpa_printf(MSG_INFO, "WPS: WEP configuration forced WPS to be "
 785                            "disabled");
 786                 bss->wps_state = 0;
 787         }
 788
 789         if (full_config && bss->wps_state && bss->wpa &&
 790             (!(bss->wpa & 2) ||
 791              !(bss->rsn_pairwise & WPA_CIPHER_CCMP))) {
 792                 wpa_printf(MSG_INFO, "WPS: WPA/TKIP configuration without "
 793                            "WPA2/CCMP forced WPS to be disabled");
 794                 bss->wps_state = 0;
 795         }
 796 #endif /* CONFIG_WPS2 */
 797
 798 #ifdef CONFIG_HS20
 799         if (full_config && bss->hs20 &&
 800             (!(bss->wpa & 2) ||
 801              !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
 802                                     WPA_CIPHER_CCMP_256 |
 803                                     WPA_CIPHER_GCMP_256)))) {
 804                 wpa_printf(MSG_ERROR, "HS 2.0: WPA2-Enterprise/CCMP "
 805                            "configuration is required for Hotspot 2.0 "
 806                            "functionality");
 807                 return -1;
 808         }
 809 #endif /* CONFIG_HS20 */
 810
 811         return 0;
 812 }
 813
 814
 815 int hostapd_config_check(struct hostapd_config *conf, int full_config)
 816 {
 817         size_t i;
 818
 819         if (full_config && conf->ieee80211d &&
 820             (!conf->country[0] || !conf->country[1])) {
 821                 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11d without "
 822                            "setting the country_code");
 823                 return -1;
 824         }
 825
 826         if (full_config && conf->ieee80211h && !conf->ieee80211d) {
 827                 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11h without "
 828                            "IEEE 802.11d enabled");
 829                 return -1;
 830         }
 831
 832         for (i = 0; i < conf->num_bss; i++) {
 833                 if (hostapd_config_check_bss(conf->bss[i], conf, full_config))
 834                         return -1;
 835         }
 836
 837         return 0;
 838 }
 839
 840
 841 void hostapd_set_security_params(struct hostapd_bss_config *bss)
 842 {
 843         if (bss->individual_wep_key_len == 0) {
 844                 /* individual keys are not use; can use key idx0 for
 845                  * broadcast keys */
 846                 bss->broadcast_key_idx_min = 0;
 847         }
 848
 849         if ((bss->wpa & 2) && bss->rsn_pairwise == 0)
 850                 bss->rsn_pairwise = bss->wpa_pairwise;
 851         bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, bss->wpa_pairwise,
 852                                                     bss->rsn_pairwise);
 853
 854         bss->radius->auth_server = bss->radius->auth_servers;
 855         bss->radius->acct_server = bss->radius->acct_servers;
 856
 857         if (bss->wpa && bss->ieee802_1x) {
 858                 bss->ssid.security_policy = SECURITY_WPA;
 859         } else if (bss->wpa) {
 860                 bss->ssid.security_policy = SECURITY_WPA_PSK;
 861         } else if (bss->ieee802_1x) {
 862                 int cipher = WPA_CIPHER_NONE;
 863                 bss->ssid.security_policy = SECURITY_IEEE_802_1X;
 864                 bss->ssid.wep.default_len = bss->default_wep_key_len;
 865                 if (bss->default_wep_key_len)
 866                         cipher = bss->default_wep_key_len >= 13 ?
 867                                 WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40;
 868                 bss->wpa_group = cipher;
 869                 bss->wpa_pairwise = cipher;
 870                 bss->rsn_pairwise = cipher;
 871         } else if (bss->ssid.wep.keys_set) {
 872                 int cipher = WPA_CIPHER_WEP40;
 873                 if (bss->ssid.wep.len[0] >= 13)
 874                         cipher = WPA_CIPHER_WEP104;
 875                 bss->ssid.security_policy = SECURITY_STATIC_WEP;
 876                 bss->wpa_group = cipher;
 877                 bss->wpa_pairwise = cipher;
 878                 bss->rsn_pairwise = cipher;
 879         } else {
 880                 bss->ssid.security_policy = SECURITY_PLAINTEXT;
 881                 bss->wpa_group = WPA_CIPHER_NONE;
 882                 bss->wpa_pairwise = WPA_CIPHER_NONE;
 883                 bss->rsn_pairwise = WPA_CIPHER_NONE;
 884         }
 885 }