contrib/wpa/src/ap/hostapd.c

   1 /*
   2  * hostapd / Initialization and configuration
   3  * Copyright (c) 2002-2019, 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 #ifdef CONFIG_SQLITE
  11 #include <sqlite3.h>
  12 #endif /* CONFIG_SQLITE */
  13
  14 #include "utils/common.h"
  15 #include "utils/eloop.h"
  16 #include "common/ieee802_11_defs.h"
  17 #include "common/wpa_ctrl.h"
  18 #include "common/hw_features_common.h"
  19 #include "radius/radius_client.h"
  20 #include "radius/radius_das.h"
  21 #include "eap_server/tncs.h"
  22 #include "eapol_auth/eapol_auth_sm.h"
  23 #include "eapol_auth/eapol_auth_sm_i.h"
  24 #include "fst/fst.h"
  25 #include "hostapd.h"
  26 #include "authsrv.h"
  27 #include "sta_info.h"
  28 #include "accounting.h"
  29 #include "ap_list.h"
  30 #include "beacon.h"
  31 #include "iapp.h"
  32 #include "ieee802_1x.h"
  33 #include "ieee802_11_auth.h"
  34 #include "vlan_init.h"
  35 #include "wpa_auth.h"
  36 #include "wps_hostapd.h"
  37 #include "dpp_hostapd.h"
  38 #include "gas_query_ap.h"
  39 #include "hw_features.h"
  40 #include "wpa_auth_glue.h"
  41 #include "ap_drv_ops.h"
  42 #include "ap_config.h"
  43 #include "p2p_hostapd.h"
  44 #include "gas_serv.h"
  45 #include "dfs.h"
  46 #include "ieee802_11.h"
  47 #include "bss_load.h"
  48 #include "x_snoop.h"
  49 #include "dhcp_snoop.h"
  50 #include "ndisc_snoop.h"
  51 #include "neighbor_db.h"
  52 #include "rrm.h"
  53 #include "fils_hlp.h"
  54 #include "acs.h"
  55 #include "hs20.h"
  56 #include "airtime_policy.h"
  57 #include "wpa_auth_kay.h"
  58
  59
  60 static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason);
  61 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd);
  62 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd);
  63 static int setup_interface2(struct hostapd_iface *iface);
  64 static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx);
  65 static void hostapd_interface_setup_failure_handler(void *eloop_ctx,
  66                                                     void *timeout_ctx);
  67
  68
  69 int hostapd_for_each_interface(struct hapd_interfaces *interfaces,
  70                                int (*cb)(struct hostapd_iface *iface,
  71                                          void *ctx), void *ctx)
  72 {
  73         size_t i;
  74         int ret;
  75
  76         for (i = 0; i < interfaces->count; i++) {
  77                 ret = cb(interfaces->iface[i], ctx);
  78                 if (ret)
  79                         return ret;
  80         }
  81
  82         return 0;
  83 }
  84
  85
  86 void hostapd_reconfig_encryption(struct hostapd_data *hapd)
  87 {
  88         if (hapd->wpa_auth)
  89                 return;
  90
  91         hostapd_set_privacy(hapd, 0);
  92         hostapd_setup_encryption(hapd->conf->iface, hapd);
  93 }
  94
  95
  96 static void hostapd_reload_bss(struct hostapd_data *hapd)
  97 {
  98         struct hostapd_ssid *ssid;
  99
 100         if (!hapd->started)
 101                 return;
 102
 103         if (hapd->conf->wmm_enabled < 0)
 104                 hapd->conf->wmm_enabled = hapd->iconf->ieee80211n;
 105
 106 #ifndef CONFIG_NO_RADIUS
 107         radius_client_reconfig(hapd->radius, hapd->conf->radius);
 108 #endif /* CONFIG_NO_RADIUS */
 109
 110         ssid = &hapd->conf->ssid;
 111         if (!ssid->wpa_psk_set && ssid->wpa_psk && !ssid->wpa_psk->next &&
 112             ssid->wpa_passphrase_set && ssid->wpa_passphrase) {
 113                 /*
 114                  * Force PSK to be derived again since SSID or passphrase may
 115                  * have changed.
 116                  */
 117                 hostapd_config_clear_wpa_psk(&hapd->conf->ssid.wpa_psk);
 118         }
 119         if (hostapd_setup_wpa_psk(hapd->conf)) {
 120                 wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
 121                            "after reloading configuration");
 122         }
 123
 124         if (hapd->conf->ieee802_1x || hapd->conf->wpa)
 125                 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1);
 126         else
 127                 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
 128
 129         if ((hapd->conf->wpa || hapd->conf->osen) && hapd->wpa_auth == NULL) {
 130                 hostapd_setup_wpa(hapd);
 131                 if (hapd->wpa_auth)
 132                         wpa_init_keys(hapd->wpa_auth);
 133         } else if (hapd->conf->wpa) {
 134                 const u8 *wpa_ie;
 135                 size_t wpa_ie_len;
 136                 hostapd_reconfig_wpa(hapd);
 137                 wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
 138                 if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len))
 139                         wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
 140                                    "the kernel driver.");
 141         } else if (hapd->wpa_auth) {
 142                 wpa_deinit(hapd->wpa_auth);
 143                 hapd->wpa_auth = NULL;
 144                 hostapd_set_privacy(hapd, 0);
 145                 hostapd_setup_encryption(hapd->conf->iface, hapd);
 146                 hostapd_set_generic_elem(hapd, (u8 *) "", 0);
 147         }
 148
 149         ieee802_11_set_beacon(hapd);
 150         hostapd_update_wps(hapd);
 151
 152         if (hapd->conf->ssid.ssid_set &&
 153             hostapd_set_ssid(hapd, hapd->conf->ssid.ssid,
 154                              hapd->conf->ssid.ssid_len)) {
 155                 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
 156                 /* try to continue */
 157         }
 158         wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface);
 159 }
 160
 161
 162 static void hostapd_clear_old(struct hostapd_iface *iface)
 163 {
 164         size_t j;
 165
 166         /*
 167          * Deauthenticate all stations since the new configuration may not
 168          * allow them to use the BSS anymore.
 169          */
 170         for (j = 0; j < iface->num_bss; j++) {
 171                 hostapd_flush_old_stations(iface->bss[j],
 172                                            WLAN_REASON_PREV_AUTH_NOT_VALID);
 173                 hostapd_broadcast_wep_clear(iface->bss[j]);
 174
 175 #ifndef CONFIG_NO_RADIUS
 176                 /* TODO: update dynamic data based on changed configuration
 177                  * items (e.g., open/close sockets, etc.) */
 178                 radius_client_flush(iface->bss[j]->radius, 0);
 179 #endif /* CONFIG_NO_RADIUS */
 180         }
 181 }
 182
 183
 184 static int hostapd_iface_conf_changed(struct hostapd_config *newconf,
 185                                       struct hostapd_config *oldconf)
 186 {
 187         size_t i;
 188
 189         if (newconf->num_bss != oldconf->num_bss)
 190                 return 1;
 191
 192         for (i = 0; i < newconf->num_bss; i++) {
 193                 if (os_strcmp(newconf->bss[i]->iface,
 194                               oldconf->bss[i]->iface) != 0)
 195                         return 1;
 196         }
 197
 198         return 0;
 199 }
 200
 201
 202 int hostapd_reload_config(struct hostapd_iface *iface)
 203 {
 204         struct hapd_interfaces *interfaces = iface->interfaces;
 205         struct hostapd_data *hapd = iface->bss[0];
 206         struct hostapd_config *newconf, *oldconf;
 207         size_t j;
 208
 209         if (iface->config_fname == NULL) {
 210                 /* Only in-memory config in use - assume it has been updated */
 211                 hostapd_clear_old(iface);
 212                 for (j = 0; j < iface->num_bss; j++)
 213                         hostapd_reload_bss(iface->bss[j]);
 214                 return 0;
 215         }
 216
 217         if (iface->interfaces == NULL ||
 218             iface->interfaces->config_read_cb == NULL)
 219                 return -1;
 220         newconf = iface->interfaces->config_read_cb(iface->config_fname);
 221         if (newconf == NULL)
 222                 return -1;
 223
 224         hostapd_clear_old(iface);
 225
 226         oldconf = hapd->iconf;
 227         if (hostapd_iface_conf_changed(newconf, oldconf)) {
 228                 char *fname;
 229                 int res;
 230
 231                 wpa_printf(MSG_DEBUG,
 232                            "Configuration changes include interface/BSS modification - force full disable+enable sequence");
 233                 fname = os_strdup(iface->config_fname);
 234                 if (!fname) {
 235                         hostapd_config_free(newconf);
 236                         return -1;
 237                 }
 238                 hostapd_remove_iface(interfaces, hapd->conf->iface);
 239                 iface = hostapd_init(interfaces, fname);
 240                 os_free(fname);
 241                 hostapd_config_free(newconf);
 242                 if (!iface) {
 243                         wpa_printf(MSG_ERROR,
 244                                    "Failed to initialize interface on config reload");
 245                         return -1;
 246                 }
 247                 iface->interfaces = interfaces;
 248                 interfaces->iface[interfaces->count] = iface;
 249                 interfaces->count++;
 250                 res = hostapd_enable_iface(iface);
 251                 if (res < 0)
 252                         wpa_printf(MSG_ERROR,
 253                                    "Failed to enable interface on config reload");
 254                 return res;
 255         }
 256         iface->conf = newconf;
 257
 258         for (j = 0; j < iface->num_bss; j++) {
 259                 hapd = iface->bss[j];
 260                 hapd->iconf = newconf;
 261                 hapd->iconf->channel = oldconf->channel;
 262                 hapd->iconf->acs = oldconf->acs;
 263                 hapd->iconf->secondary_channel = oldconf->secondary_channel;
 264                 hapd->iconf->ieee80211n = oldconf->ieee80211n;
 265                 hapd->iconf->ieee80211ac = oldconf->ieee80211ac;
 266                 hapd->iconf->ht_capab = oldconf->ht_capab;
 267                 hapd->iconf->vht_capab = oldconf->vht_capab;
 268                 hostapd_set_oper_chwidth(hapd->iconf,
 269                                          hostapd_get_oper_chwidth(oldconf));
 270                 hostapd_set_oper_centr_freq_seg0_idx(
 271                         hapd->iconf,
 272                         hostapd_get_oper_centr_freq_seg0_idx(oldconf));
 273                 hostapd_set_oper_centr_freq_seg1_idx(
 274                         hapd->iconf,
 275                         hostapd_get_oper_centr_freq_seg1_idx(oldconf));
 276                 hapd->conf = newconf->bss[j];
 277                 hostapd_reload_bss(hapd);
 278         }
 279
 280         hostapd_config_free(oldconf);
 281
 282
 283         return 0;
 284 }
 285
 286
 287 static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd,
 288                                               const char *ifname)
 289 {
 290         int i;
 291
 292         if (!ifname || !hapd->drv_priv)
 293                 return;
 294         for (i = 0; i < NUM_WEP_KEYS; i++) {
 295                 if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE, NULL, i,
 296                                         0, NULL, 0, NULL, 0)) {
 297                         wpa_printf(MSG_DEBUG, "Failed to clear default "
 298                                    "encryption keys (ifname=%s keyidx=%d)",
 299                                    ifname, i);
 300                 }
 301         }
 302 #ifdef CONFIG_IEEE80211W
 303         if (hapd->conf->ieee80211w) {
 304                 for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) {
 305                         if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE,
 306                                                 NULL, i, 0, NULL,
 307                                                 0, NULL, 0)) {
 308                                 wpa_printf(MSG_DEBUG, "Failed to clear "
 309                                            "default mgmt encryption keys "
 310                                            "(ifname=%s keyidx=%d)", ifname, i);
 311                         }
 312                 }
 313         }
 314 #endif /* CONFIG_IEEE80211W */
 315 }
 316
 317
 318 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd)
 319 {
 320         hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface);
 321         return 0;
 322 }
 323
 324
 325 static int hostapd_broadcast_wep_set(struct hostapd_data *hapd)
 326 {
 327         int errors = 0, idx;
 328         struct hostapd_ssid *ssid = &hapd->conf->ssid;
 329
 330         idx = ssid->wep.idx;
 331         if (ssid->wep.default_len &&
 332             hostapd_drv_set_key(hapd->conf->iface,
 333                                 hapd, WPA_ALG_WEP, broadcast_ether_addr, idx,
 334                                 1, NULL, 0, ssid->wep.key[idx],
 335                                 ssid->wep.len[idx])) {
 336                 wpa_printf(MSG_WARNING, "Could not set WEP encryption.");
 337                 errors++;
 338         }
 339
 340         return errors;
 341 }
 342
 343
 344 static void hostapd_free_hapd_data(struct hostapd_data *hapd)
 345 {
 346         os_free(hapd->probereq_cb);
 347         hapd->probereq_cb = NULL;
 348         hapd->num_probereq_cb = 0;
 349
 350 #ifdef CONFIG_P2P
 351         wpabuf_free(hapd->p2p_beacon_ie);
 352         hapd->p2p_beacon_ie = NULL;
 353         wpabuf_free(hapd->p2p_probe_resp_ie);
 354         hapd->p2p_probe_resp_ie = NULL;
 355 #endif /* CONFIG_P2P */
 356
 357         if (!hapd->started) {
 358                 wpa_printf(MSG_ERROR, "%s: Interface %s wasn't started",
 359                            __func__, hapd->conf ? hapd->conf->iface : "N/A");
 360                 return;
 361         }
 362         hapd->started = 0;
 363         hapd->beacon_set_done = 0;
 364
 365         wpa_printf(MSG_DEBUG, "%s(%s)", __func__, hapd->conf->iface);
 366         iapp_deinit(hapd->iapp);
 367         hapd->iapp = NULL;
 368         accounting_deinit(hapd);
 369         hostapd_deinit_wpa(hapd);
 370         vlan_deinit(hapd);
 371         hostapd_acl_deinit(hapd);
 372 #ifndef CONFIG_NO_RADIUS
 373         radius_client_deinit(hapd->radius);
 374         hapd->radius = NULL;
 375         radius_das_deinit(hapd->radius_das);
 376         hapd->radius_das = NULL;
 377 #endif /* CONFIG_NO_RADIUS */
 378
 379         hostapd_deinit_wps(hapd);
 380         ieee802_1x_dealloc_kay_sm_hapd(hapd);
 381 #ifdef CONFIG_DPP
 382         hostapd_dpp_deinit(hapd);
 383         gas_query_ap_deinit(hapd->gas);
 384 #endif /* CONFIG_DPP */
 385
 386         authsrv_deinit(hapd);
 387
 388         if (hapd->interface_added) {
 389                 hapd->interface_added = 0;
 390                 if (hostapd_if_remove(hapd, WPA_IF_AP_BSS, hapd->conf->iface)) {
 391                         wpa_printf(MSG_WARNING,
 392                                    "Failed to remove BSS interface %s",
 393                                    hapd->conf->iface);
 394                         hapd->interface_added = 1;
 395                 } else {
 396                         /*
 397                          * Since this was a dynamically added interface, the
 398                          * driver wrapper may have removed its internal instance
 399                          * and hapd->drv_priv is not valid anymore.
 400                          */
 401                         hapd->drv_priv = NULL;
 402                 }
 403         }
 404
 405         wpabuf_free(hapd->time_adv);
 406
 407 #ifdef CONFIG_INTERWORKING
 408         gas_serv_deinit(hapd);
 409 #endif /* CONFIG_INTERWORKING */
 410
 411         bss_load_update_deinit(hapd);
 412         ndisc_snoop_deinit(hapd);
 413         dhcp_snoop_deinit(hapd);
 414         x_snoop_deinit(hapd);
 415
 416 #ifdef CONFIG_SQLITE
 417         bin_clear_free(hapd->tmp_eap_user.identity,
 418                        hapd->tmp_eap_user.identity_len);
 419         bin_clear_free(hapd->tmp_eap_user.password,
 420                        hapd->tmp_eap_user.password_len);
 421 #endif /* CONFIG_SQLITE */
 422
 423 #ifdef CONFIG_MESH
 424         wpabuf_free(hapd->mesh_pending_auth);
 425         hapd->mesh_pending_auth = NULL;
 426 #endif /* CONFIG_MESH */
 427
 428         hostapd_clean_rrm(hapd);
 429         fils_hlp_deinit(hapd);
 430
 431 #ifdef CONFIG_SAE
 432         {
 433                 struct hostapd_sae_commit_queue *q;
 434
 435                 while ((q = dl_list_first(&hapd->sae_commit_queue,
 436                                           struct hostapd_sae_commit_queue,
 437                                           list))) {
 438                         dl_list_del(&q->list);
 439                         os_free(q);
 440                 }
 441         }
 442         eloop_cancel_timeout(auth_sae_process_commit, hapd, NULL);
 443 #endif /* CONFIG_SAE */
 444 }
 445
 446
 447 /**
 448  * hostapd_cleanup - Per-BSS cleanup (deinitialization)
 449  * @hapd: Pointer to BSS data
 450  *
 451  * This function is used to free all per-BSS data structures and resources.
 452  * Most of the modules that are initialized in hostapd_setup_bss() are
 453  * deinitialized here.
 454  */
 455 static void hostapd_cleanup(struct hostapd_data *hapd)
 456 {
 457         wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s))", __func__, hapd,
 458                    hapd->conf ? hapd->conf->iface : "N/A");
 459         if (hapd->iface->interfaces &&
 460             hapd->iface->interfaces->ctrl_iface_deinit) {
 461                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPA_EVENT_TERMINATING);
 462                 hapd->iface->interfaces->ctrl_iface_deinit(hapd);
 463         }
 464         hostapd_free_hapd_data(hapd);
 465 }
 466
 467
 468 static void sta_track_deinit(struct hostapd_iface *iface)
 469 {
 470         struct hostapd_sta_info *info;
 471
 472         if (!iface->num_sta_seen)
 473                 return;
 474
 475         while ((info = dl_list_first(&iface->sta_seen, struct hostapd_sta_info,
 476                                      list))) {
 477                 dl_list_del(&info->list);
 478                 iface->num_sta_seen--;
 479                 sta_track_del(info);
 480         }
 481 }
 482
 483
 484 static void hostapd_cleanup_iface_partial(struct hostapd_iface *iface)
 485 {
 486         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
 487 #ifdef CONFIG_IEEE80211N
 488 #ifdef NEED_AP_MLME
 489         hostapd_stop_setup_timers(iface);
 490 #endif /* NEED_AP_MLME */
 491 #endif /* CONFIG_IEEE80211N */
 492         if (iface->current_mode)
 493                 acs_cleanup(iface);
 494         hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
 495         iface->hw_features = NULL;
 496         iface->current_mode = NULL;
 497         os_free(iface->current_rates);
 498         iface->current_rates = NULL;
 499         os_free(iface->basic_rates);
 500         iface->basic_rates = NULL;
 501         ap_list_deinit(iface);
 502         sta_track_deinit(iface);
 503         airtime_policy_update_deinit(iface);
 504 }
 505
 506
 507 /**
 508  * hostapd_cleanup_iface - Complete per-interface cleanup
 509  * @iface: Pointer to interface data
 510  *
 511  * This function is called after per-BSS data structures are deinitialized
 512  * with hostapd_cleanup().
 513  */
 514 static void hostapd_cleanup_iface(struct hostapd_iface *iface)
 515 {
 516         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
 517         eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
 518         eloop_cancel_timeout(hostapd_interface_setup_failure_handler, iface,
 519                              NULL);
 520
 521         hostapd_cleanup_iface_partial(iface);
 522         hostapd_config_free(iface->conf);
 523         iface->conf = NULL;
 524
 525         os_free(iface->config_fname);
 526         os_free(iface->bss);
 527         wpa_printf(MSG_DEBUG, "%s: free iface=%p", __func__, iface);
 528         os_free(iface);
 529 }
 530
 531
 532 static void hostapd_clear_wep(struct hostapd_data *hapd)
 533 {
 534         if (hapd->drv_priv && !hapd->iface->driver_ap_teardown && hapd->conf) {
 535                 hostapd_set_privacy(hapd, 0);
 536                 hostapd_broadcast_wep_clear(hapd);
 537         }
 538 }
 539
 540
 541 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
 542 {
 543         int i;
 544
 545         hostapd_broadcast_wep_set(hapd);
 546
 547         if (hapd->conf->ssid.wep.default_len) {
 548                 hostapd_set_privacy(hapd, 1);
 549                 return 0;
 550         }
 551
 552         /*
 553          * When IEEE 802.1X is not enabled, the driver may need to know how to
 554          * set authentication algorithms for static WEP.
 555          */
 556         hostapd_drv_set_authmode(hapd, hapd->conf->auth_algs);
 557
 558         for (i = 0; i < 4; i++) {
 559                 if (hapd->conf->ssid.wep.key[i] &&
 560                     hostapd_drv_set_key(iface, hapd, WPA_ALG_WEP, NULL, i,
 561                                         i == hapd->conf->ssid.wep.idx, NULL, 0,
 562                                         hapd->conf->ssid.wep.key[i],
 563                                         hapd->conf->ssid.wep.len[i])) {
 564                         wpa_printf(MSG_WARNING, "Could not set WEP "
 565                                    "encryption.");
 566                         return -1;
 567                 }
 568                 if (hapd->conf->ssid.wep.key[i] &&
 569                     i == hapd->conf->ssid.wep.idx)
 570                         hostapd_set_privacy(hapd, 1);
 571         }
 572
 573         return 0;
 574 }
 575
 576
 577 static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason)
 578 {
 579         int ret = 0;
 580         u8 addr[ETH_ALEN];
 581
 582         if (hostapd_drv_none(hapd) || hapd->drv_priv == NULL)
 583                 return 0;
 584
 585         if (!hapd->iface->driver_ap_teardown) {
 586                 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
 587                         "Flushing old station entries");
 588
 589                 if (hostapd_flush(hapd)) {
 590                         wpa_msg(hapd->msg_ctx, MSG_WARNING,
 591                                 "Could not connect to kernel driver");
 592                         ret = -1;
 593                 }
 594         }
 595         if (hapd->conf && hapd->conf->broadcast_deauth) {
 596                 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
 597                         "Deauthenticate all stations");
 598                 os_memset(addr, 0xff, ETH_ALEN);
 599                 hostapd_drv_sta_deauth(hapd, addr, reason);
 600         }
 601         hostapd_free_stas(hapd);
 602
 603         return ret;
 604 }
 605
 606
 607 static void hostapd_bss_deinit_no_free(struct hostapd_data *hapd)
 608 {
 609         hostapd_free_stas(hapd);
 610         hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING);
 611         hostapd_clear_wep(hapd);
 612 }
 613
 614
 615 /**
 616  * hostapd_validate_bssid_configuration - Validate BSSID configuration
 617  * @iface: Pointer to interface data
 618  * Returns: 0 on success, -1 on failure
 619  *
 620  * This function is used to validate that the configured BSSIDs are valid.
 621  */
 622 static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
 623 {
 624         u8 mask[ETH_ALEN] = { 0 };
 625         struct hostapd_data *hapd = iface->bss[0];
 626         unsigned int i = iface->conf->num_bss, bits = 0, j;
 627         int auto_addr = 0;
 628
 629         if (hostapd_drv_none(hapd))
 630                 return 0;
 631
 632         if (iface->conf->use_driver_iface_addr)
 633                 return 0;
 634
 635         /* Generate BSSID mask that is large enough to cover the BSSIDs. */
 636
 637         /* Determine the bits necessary to cover the number of BSSIDs. */
 638         for (i--; i; i >>= 1)
 639                 bits++;
 640
 641         /* Determine the bits necessary to any configured BSSIDs,
 642            if they are higher than the number of BSSIDs. */
 643         for (j = 0; j < iface->conf->num_bss; j++) {
 644                 if (is_zero_ether_addr(iface->conf->bss[j]->bssid)) {
 645                         if (j)
 646                                 auto_addr++;
 647                         continue;
 648                 }
 649
 650                 for (i = 0; i < ETH_ALEN; i++) {
 651                         mask[i] |=
 652                                 iface->conf->bss[j]->bssid[i] ^
 653                                 hapd->own_addr[i];
 654                 }
 655         }
 656
 657         if (!auto_addr)
 658                 goto skip_mask_ext;
 659
 660         for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
 661                 ;
 662         j = 0;
 663         if (i < ETH_ALEN) {
 664                 j = (5 - i) * 8;
 665
 666                 while (mask[i] != 0) {
 667                         mask[i] >>= 1;
 668                         j++;
 669                 }
 670         }
 671
 672         if (bits < j)
 673                 bits = j;
 674
 675         if (bits > 40) {
 676                 wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)",
 677                            bits);
 678                 return -1;
 679         }
 680
 681         os_memset(mask, 0xff, ETH_ALEN);
 682         j = bits / 8;
 683         for (i = 5; i > 5 - j; i--)
 684                 mask[i] = 0;
 685         j = bits % 8;
 686         while (j) {
 687                 j--;
 688                 mask[i] <<= 1;
 689         }
 690
 691 skip_mask_ext:
 692         wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
 693                    (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
 694
 695         if (!auto_addr)
 696                 return 0;
 697
 698         for (i = 0; i < ETH_ALEN; i++) {
 699                 if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
 700                         wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR
 701                                    " for start address " MACSTR ".",
 702                                    MAC2STR(mask), MAC2STR(hapd->own_addr));
 703                         wpa_printf(MSG_ERROR, "Start address must be the "
 704                                    "first address in the block (i.e., addr "
 705                                    "AND mask == addr).");
 706                         return -1;
 707                 }
 708         }
 709
 710         return 0;
 711 }
 712
 713
 714 static int mac_in_conf(struct hostapd_config *conf, const void *a)
 715 {
 716         size_t i;
 717
 718         for (i = 0; i < conf->num_bss; i++) {
 719                 if (hostapd_mac_comp(conf->bss[i]->bssid, a) == 0) {
 720                         return 1;
 721                 }
 722         }
 723
 724         return 0;
 725 }
 726
 727
 728 #ifndef CONFIG_NO_RADIUS
 729
 730 static int hostapd_das_nas_mismatch(struct hostapd_data *hapd,
 731                                     struct radius_das_attrs *attr)
 732 {
 733         if (attr->nas_identifier &&
 734             (!hapd->conf->nas_identifier ||
 735              os_strlen(hapd->conf->nas_identifier) !=
 736              attr->nas_identifier_len ||
 737              os_memcmp(hapd->conf->nas_identifier, attr->nas_identifier,
 738                        attr->nas_identifier_len) != 0)) {
 739                 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-Identifier mismatch");
 740                 return 1;
 741         }
 742
 743         if (attr->nas_ip_addr &&
 744             (hapd->conf->own_ip_addr.af != AF_INET ||
 745              os_memcmp(&hapd->conf->own_ip_addr.u.v4, attr->nas_ip_addr, 4) !=
 746              0)) {
 747                 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IP-Address mismatch");
 748                 return 1;
 749         }
 750
 751 #ifdef CONFIG_IPV6
 752         if (attr->nas_ipv6_addr &&
 753             (hapd->conf->own_ip_addr.af != AF_INET6 ||
 754              os_memcmp(&hapd->conf->own_ip_addr.u.v6, attr->nas_ipv6_addr, 16)
 755              != 0)) {
 756                 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IPv6-Address mismatch");
 757                 return 1;
 758         }
 759 #endif /* CONFIG_IPV6 */
 760
 761         return 0;
 762 }
 763
 764
 765 static struct sta_info * hostapd_das_find_sta(struct hostapd_data *hapd,
 766                                               struct radius_das_attrs *attr,
 767                                               int *multi)
 768 {
 769         struct sta_info *selected, *sta;
 770         char buf[128];
 771         int num_attr = 0;
 772         int count;
 773
 774         *multi = 0;
 775
 776         for (sta = hapd->sta_list; sta; sta = sta->next)
 777                 sta->radius_das_match = 1;
 778
 779         if (attr->sta_addr) {
 780                 num_attr++;
 781                 sta = ap_get_sta(hapd, attr->sta_addr);
 782                 if (!sta) {
 783                         wpa_printf(MSG_DEBUG,
 784                                    "RADIUS DAS: No Calling-Station-Id match");
 785                         return NULL;
 786                 }
 787
 788                 selected = sta;
 789                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 790                         if (sta != selected)
 791                                 sta->radius_das_match = 0;
 792                 }
 793                 wpa_printf(MSG_DEBUG, "RADIUS DAS: Calling-Station-Id match");
 794         }
 795
 796         if (attr->acct_session_id) {
 797                 num_attr++;
 798                 if (attr->acct_session_id_len != 16) {
 799                         wpa_printf(MSG_DEBUG,
 800                                    "RADIUS DAS: Acct-Session-Id cannot match");
 801                         return NULL;
 802                 }
 803                 count = 0;
 804
 805                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 806                         if (!sta->radius_das_match)
 807                                 continue;
 808                         os_snprintf(buf, sizeof(buf), "%016llX",
 809                                     (unsigned long long) sta->acct_session_id);
 810                         if (os_memcmp(attr->acct_session_id, buf, 16) != 0)
 811                                 sta->radius_das_match = 0;
 812                         else
 813                                 count++;
 814                 }
 815
 816                 if (count == 0) {
 817                         wpa_printf(MSG_DEBUG,
 818                                    "RADIUS DAS: No matches remaining after Acct-Session-Id check");
 819                         return NULL;
 820                 }
 821                 wpa_printf(MSG_DEBUG, "RADIUS DAS: Acct-Session-Id match");
 822         }
 823
 824         if (attr->acct_multi_session_id) {
 825                 num_attr++;
 826                 if (attr->acct_multi_session_id_len != 16) {
 827                         wpa_printf(MSG_DEBUG,
 828                                    "RADIUS DAS: Acct-Multi-Session-Id cannot match");
 829                         return NULL;
 830                 }
 831                 count = 0;
 832
 833                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 834                         if (!sta->radius_das_match)
 835                                 continue;
 836                         if (!sta->eapol_sm ||
 837                             !sta->eapol_sm->acct_multi_session_id) {
 838                                 sta->radius_das_match = 0;
 839                                 continue;
 840                         }
 841                         os_snprintf(buf, sizeof(buf), "%016llX",
 842                                     (unsigned long long)
 843                                     sta->eapol_sm->acct_multi_session_id);
 844                         if (os_memcmp(attr->acct_multi_session_id, buf, 16) !=
 845                             0)
 846                                 sta->radius_das_match = 0;
 847                         else
 848                                 count++;
 849                 }
 850
 851                 if (count == 0) {
 852                         wpa_printf(MSG_DEBUG,
 853                                    "RADIUS DAS: No matches remaining after Acct-Multi-Session-Id check");
 854                         return NULL;
 855                 }
 856                 wpa_printf(MSG_DEBUG,
 857                            "RADIUS DAS: Acct-Multi-Session-Id match");
 858         }
 859
 860         if (attr->cui) {
 861                 num_attr++;
 862                 count = 0;
 863
 864                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 865                         struct wpabuf *cui;
 866
 867                         if (!sta->radius_das_match)
 868                                 continue;
 869                         cui = ieee802_1x_get_radius_cui(sta->eapol_sm);
 870                         if (!cui || wpabuf_len(cui) != attr->cui_len ||
 871                             os_memcmp(wpabuf_head(cui), attr->cui,
 872                                       attr->cui_len) != 0)
 873                                 sta->radius_das_match = 0;
 874                         else
 875                                 count++;
 876                 }
 877
 878                 if (count == 0) {
 879                         wpa_printf(MSG_DEBUG,
 880                                    "RADIUS DAS: No matches remaining after Chargeable-User-Identity check");
 881                         return NULL;
 882                 }
 883                 wpa_printf(MSG_DEBUG,
 884                            "RADIUS DAS: Chargeable-User-Identity match");
 885         }
 886
 887         if (attr->user_name) {
 888                 num_attr++;
 889                 count = 0;
 890
 891                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 892                         u8 *identity;
 893                         size_t identity_len;
 894
 895                         if (!sta->radius_das_match)
 896                                 continue;
 897                         identity = ieee802_1x_get_identity(sta->eapol_sm,
 898                                                            &identity_len);
 899                         if (!identity ||
 900                             identity_len != attr->user_name_len ||
 901                             os_memcmp(identity, attr->user_name, identity_len)
 902                             != 0)
 903                                 sta->radius_das_match = 0;
 904                         else
 905                                 count++;
 906                 }
 907
 908                 if (count == 0) {
 909                         wpa_printf(MSG_DEBUG,
 910                                    "RADIUS DAS: No matches remaining after User-Name check");
 911                         return NULL;
 912                 }
 913                 wpa_printf(MSG_DEBUG,
 914                            "RADIUS DAS: User-Name match");
 915         }
 916
 917         if (num_attr == 0) {
 918                 /*
 919                  * In theory, we could match all current associations, but it
 920                  * seems safer to just reject requests that do not include any
 921                  * session identification attributes.
 922                  */
 923                 wpa_printf(MSG_DEBUG,
 924                            "RADIUS DAS: No session identification attributes included");
 925                 return NULL;
 926         }
 927
 928         selected = NULL;
 929         for (sta = hapd->sta_list; sta; sta = sta->next) {
 930                 if (sta->radius_das_match) {
 931                         if (selected) {
 932                                 *multi = 1;
 933                                 return NULL;
 934                         }
 935                         selected = sta;
 936                 }
 937         }
 938
 939         return selected;
 940 }
 941
 942
 943 static int hostapd_das_disconnect_pmksa(struct hostapd_data *hapd,
 944                                         struct radius_das_attrs *attr)
 945 {
 946         if (!hapd->wpa_auth)
 947                 return -1;
 948         return wpa_auth_radius_das_disconnect_pmksa(hapd->wpa_auth, attr);
 949 }
 950
 951
 952 static enum radius_das_res
 953 hostapd_das_disconnect(void *ctx, struct radius_das_attrs *attr)
 954 {
 955         struct hostapd_data *hapd = ctx;
 956         struct sta_info *sta;
 957         int multi;
 958
 959         if (hostapd_das_nas_mismatch(hapd, attr))
 960                 return RADIUS_DAS_NAS_MISMATCH;
 961
 962         sta = hostapd_das_find_sta(hapd, attr, &multi);
 963         if (sta == NULL) {
 964                 if (multi) {
 965                         wpa_printf(MSG_DEBUG,
 966                                    "RADIUS DAS: Multiple sessions match - not supported");
 967                         return RADIUS_DAS_MULTI_SESSION_MATCH;
 968                 }
 969                 if (hostapd_das_disconnect_pmksa(hapd, attr) == 0) {
 970                         wpa_printf(MSG_DEBUG,
 971                                    "RADIUS DAS: PMKSA cache entry matched");
 972                         return RADIUS_DAS_SUCCESS;
 973                 }
 974                 wpa_printf(MSG_DEBUG, "RADIUS DAS: No matching session found");
 975                 return RADIUS_DAS_SESSION_NOT_FOUND;
 976         }
 977
 978         wpa_printf(MSG_DEBUG, "RADIUS DAS: Found a matching session " MACSTR
 979                    " - disconnecting", MAC2STR(sta->addr));
 980         wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr);
 981
 982         hostapd_drv_sta_deauth(hapd, sta->addr,
 983                                WLAN_REASON_PREV_AUTH_NOT_VALID);
 984         ap_sta_deauthenticate(hapd, sta, WLAN_REASON_PREV_AUTH_NOT_VALID);
 985
 986         return RADIUS_DAS_SUCCESS;
 987 }
 988
 989
 990 #ifdef CONFIG_HS20
 991 static enum radius_das_res
 992 hostapd_das_coa(void *ctx, struct radius_das_attrs *attr)
 993 {
 994         struct hostapd_data *hapd = ctx;
 995         struct sta_info *sta;
 996         int multi;
 997
 998         if (hostapd_das_nas_mismatch(hapd, attr))
 999                 return RADIUS_DAS_NAS_MISMATCH;
1000
1001         sta = hostapd_das_find_sta(hapd, attr, &multi);
1002         if (!sta) {
1003                 if (multi) {
1004                         wpa_printf(MSG_DEBUG,
1005                                    "RADIUS DAS: Multiple sessions match - not supported");
1006                         return RADIUS_DAS_MULTI_SESSION_MATCH;
1007                 }
1008                 wpa_printf(MSG_DEBUG, "RADIUS DAS: No matching session found");
1009                 return RADIUS_DAS_SESSION_NOT_FOUND;
1010         }
1011
1012         wpa_printf(MSG_DEBUG, "RADIUS DAS: Found a matching session " MACSTR
1013                    " - CoA", MAC2STR(sta->addr));
1014
1015         if (attr->hs20_t_c_filtering) {
1016                 if (attr->hs20_t_c_filtering[0] & BIT(0)) {
1017                         wpa_printf(MSG_DEBUG,
1018                                    "HS 2.0: Unexpected Terms and Conditions filtering required in CoA-Request");
1019                         return RADIUS_DAS_COA_FAILED;
1020                 }
1021
1022                 hs20_t_c_filtering(hapd, sta, 0);
1023         }
1024
1025         return RADIUS_DAS_SUCCESS;
1026 }
1027 #else /* CONFIG_HS20 */
1028 #define hostapd_das_coa NULL
1029 #endif /* CONFIG_HS20 */
1030
1031
1032 #ifdef CONFIG_SQLITE
1033
1034 static int db_table_exists(sqlite3 *db, const char *name)
1035 {
1036         char cmd[128];
1037
1038         os_snprintf(cmd, sizeof(cmd), "SELECT 1 FROM %s;", name);
1039         return sqlite3_exec(db, cmd, NULL, NULL, NULL) == SQLITE_OK;
1040 }
1041
1042
1043 static int db_table_create_radius_attributes(sqlite3 *db)
1044 {
1045         char *err = NULL;
1046         const char *sql =
1047                 "CREATE TABLE radius_attributes("
1048                 " id INTEGER PRIMARY KEY,"
1049                 " sta TEXT,"
1050                 " reqtype TEXT,"
1051                 " attr TEXT"
1052                 ");"
1053                 "CREATE INDEX idx_sta_reqtype ON radius_attributes(sta,reqtype);";
1054
1055         wpa_printf(MSG_DEBUG,
1056                    "Adding database table for RADIUS attribute information");
1057         if (sqlite3_exec(db, sql, NULL, NULL, &err) != SQLITE_OK) {
1058                 wpa_printf(MSG_ERROR, "SQLite error: %s", err);
1059                 sqlite3_free(err);
1060                 return -1;
1061         }
1062
1063         return 0;
1064 }
1065
1066 #endif /* CONFIG_SQLITE */
1067
1068 #endif /* CONFIG_NO_RADIUS */
1069
1070
1071 /**
1072  * hostapd_setup_bss - Per-BSS setup (initialization)
1073  * @hapd: Pointer to BSS data
1074  * @first: Whether this BSS is the first BSS of an interface; -1 = not first,
1075  *      but interface may exist
1076  *
1077  * This function is used to initialize all per-BSS data structures and
1078  * resources. This gets called in a loop for each BSS when an interface is
1079  * initialized. Most of the modules that are initialized here will be
1080  * deinitialized in hostapd_cleanup().
1081  */
1082 static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
1083 {
1084         struct hostapd_bss_config *conf = hapd->conf;
1085         u8 ssid[SSID_MAX_LEN + 1];
1086         int ssid_len, set_ssid;
1087         char force_ifname[IFNAMSIZ];
1088         u8 if_addr[ETH_ALEN];
1089         int flush_old_stations = 1;
1090
1091         wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s), first=%d)",
1092                    __func__, hapd, conf->iface, first);
1093
1094 #ifdef EAP_SERVER_TNC
1095         if (conf->tnc && tncs_global_init() < 0) {
1096                 wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
1097                 return -1;
1098         }
1099 #endif /* EAP_SERVER_TNC */
1100
1101         if (hapd->started) {
1102                 wpa_printf(MSG_ERROR, "%s: Interface %s was already started",
1103                            __func__, conf->iface);
1104                 return -1;
1105         }
1106         hapd->started = 1;
1107
1108         if (!first || first == -1) {
1109                 u8 *addr = hapd->own_addr;
1110
1111                 if (!is_zero_ether_addr(conf->bssid)) {
1112                         /* Allocate the configured BSSID. */
1113                         os_memcpy(hapd->own_addr, conf->bssid, ETH_ALEN);
1114
1115                         if (hostapd_mac_comp(hapd->own_addr,
1116                                              hapd->iface->bss[0]->own_addr) ==
1117                             0) {
1118                                 wpa_printf(MSG_ERROR, "BSS '%s' may not have "
1119                                            "BSSID set to the MAC address of "
1120                                            "the radio", conf->iface);
1121                                 return -1;
1122                         }
1123                 } else if (hapd->iconf->use_driver_iface_addr) {
1124                         addr = NULL;
1125                 } else {
1126                         /* Allocate the next available BSSID. */
1127                         do {
1128                                 inc_byte_array(hapd->own_addr, ETH_ALEN);
1129                         } while (mac_in_conf(hapd->iconf, hapd->own_addr));
1130                 }
1131
1132                 hapd->interface_added = 1;
1133                 if (hostapd_if_add(hapd->iface->bss[0], WPA_IF_AP_BSS,
1134                                    conf->iface, addr, hapd,
1135                                    &hapd->drv_priv, force_ifname, if_addr,
1136                                    conf->bridge[0] ? conf->bridge : NULL,
1137                                    first == -1)) {
1138                         wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
1139                                    MACSTR ")", MAC2STR(hapd->own_addr));
1140                         hapd->interface_added = 0;
1141                         return -1;
1142                 }
1143
1144                 if (!addr)
1145                         os_memcpy(hapd->own_addr, if_addr, ETH_ALEN);
1146         }
1147
1148         if (conf->wmm_enabled < 0)
1149                 conf->wmm_enabled = hapd->iconf->ieee80211n;
1150
1151 #ifdef CONFIG_IEEE80211R_AP
1152         if (is_zero_ether_addr(conf->r1_key_holder))
1153                 os_memcpy(conf->r1_key_holder, hapd->own_addr, ETH_ALEN);
1154 #endif /* CONFIG_IEEE80211R_AP */
1155
1156 #ifdef CONFIG_MESH
1157         if ((hapd->conf->mesh & MESH_ENABLED) && hapd->iface->mconf == NULL)
1158                 flush_old_stations = 0;
1159 #endif /* CONFIG_MESH */
1160
1161         if (flush_old_stations)
1162                 hostapd_flush_old_stations(hapd,
1163                                            WLAN_REASON_PREV_AUTH_NOT_VALID);
1164         hostapd_set_privacy(hapd, 0);
1165
1166         hostapd_broadcast_wep_clear(hapd);
1167         if (hostapd_setup_encryption(conf->iface, hapd))
1168                 return -1;
1169
1170         /*
1171          * Fetch the SSID from the system and use it or,
1172          * if one was specified in the config file, verify they
1173          * match.
1174          */
1175         ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
1176         if (ssid_len < 0) {
1177                 wpa_printf(MSG_ERROR, "Could not read SSID from system");
1178                 return -1;
1179         }
1180         if (conf->ssid.ssid_set) {
1181                 /*
1182                  * If SSID is specified in the config file and it differs
1183                  * from what is being used then force installation of the
1184                  * new SSID.
1185                  */
1186                 set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
1187                             os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
1188         } else {
1189                 /*
1190                  * No SSID in the config file; just use the one we got
1191                  * from the system.
1192                  */
1193                 set_ssid = 0;
1194                 conf->ssid.ssid_len = ssid_len;
1195                 os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
1196         }
1197
1198         if (!hostapd_drv_none(hapd)) {
1199                 wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR
1200                            " and ssid \"%s\"",
1201                            conf->iface, MAC2STR(hapd->own_addr),
1202                            wpa_ssid_txt(conf->ssid.ssid, conf->ssid.ssid_len));
1203         }
1204
1205         if (hostapd_setup_wpa_psk(conf)) {
1206                 wpa_printf(MSG_ERROR, "WPA-PSK setup failed.");
1207                 return -1;
1208         }
1209
1210         /* Set SSID for the kernel driver (to be used in beacon and probe
1211          * response frames) */
1212         if (set_ssid && hostapd_set_ssid(hapd, conf->ssid.ssid,
1213                                          conf->ssid.ssid_len)) {
1214                 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
1215                 return -1;
1216         }
1217
1218         if (wpa_debug_level <= MSG_MSGDUMP)
1219                 conf->radius->msg_dumps = 1;
1220 #ifndef CONFIG_NO_RADIUS
1221
1222 #ifdef CONFIG_SQLITE
1223         if (conf->radius_req_attr_sqlite) {
1224                 if (sqlite3_open(conf->radius_req_attr_sqlite,
1225                                  &hapd->rad_attr_db)) {
1226                         wpa_printf(MSG_ERROR, "Could not open SQLite file '%s'",
1227                                    conf->radius_req_attr_sqlite);
1228                         return -1;
1229                 }
1230
1231                 wpa_printf(MSG_DEBUG, "Opening RADIUS attribute database: %s",
1232                            conf->radius_req_attr_sqlite);
1233                 if (!db_table_exists(hapd->rad_attr_db, "radius_attributes") &&
1234                     db_table_create_radius_attributes(hapd->rad_attr_db) < 0)
1235                         return -1;
1236         }
1237 #endif /* CONFIG_SQLITE */
1238
1239         hapd->radius = radius_client_init(hapd, conf->radius);
1240         if (hapd->radius == NULL) {
1241                 wpa_printf(MSG_ERROR, "RADIUS client initialization failed.");
1242                 return -1;
1243         }
1244
1245         if (conf->radius_das_port) {
1246                 struct radius_das_conf das_conf;
1247                 os_memset(&das_conf, 0, sizeof(das_conf));
1248                 das_conf.port = conf->radius_das_port;
1249                 das_conf.shared_secret = conf->radius_das_shared_secret;
1250                 das_conf.shared_secret_len =
1251                         conf->radius_das_shared_secret_len;
1252                 das_conf.client_addr = &conf->radius_das_client_addr;
1253                 das_conf.time_window = conf->radius_das_time_window;
1254                 das_conf.require_event_timestamp =
1255                         conf->radius_das_require_event_timestamp;
1256                 das_conf.require_message_authenticator =
1257                         conf->radius_das_require_message_authenticator;
1258                 das_conf.ctx = hapd;
1259                 das_conf.disconnect = hostapd_das_disconnect;
1260                 das_conf.coa = hostapd_das_coa;
1261                 hapd->radius_das = radius_das_init(&das_conf);
1262                 if (hapd->radius_das == NULL) {
1263                         wpa_printf(MSG_ERROR, "RADIUS DAS initialization "
1264                                    "failed.");
1265                         return -1;
1266                 }
1267         }
1268 #endif /* CONFIG_NO_RADIUS */
1269
1270         if (hostapd_acl_init(hapd)) {
1271                 wpa_printf(MSG_ERROR, "ACL initialization failed.");
1272                 return -1;
1273         }
1274         if (hostapd_init_wps(hapd, conf))
1275                 return -1;
1276
1277 #ifdef CONFIG_DPP
1278         hapd->gas = gas_query_ap_init(hapd, hapd->msg_ctx);
1279         if (!hapd->gas)
1280                 return -1;
1281         if (hostapd_dpp_init(hapd))
1282                 return -1;
1283 #endif /* CONFIG_DPP */
1284
1285         if (authsrv_init(hapd) < 0)
1286                 return -1;
1287
1288         if (ieee802_1x_init(hapd)) {
1289                 wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed.");
1290                 return -1;
1291         }
1292
1293         if ((conf->wpa || conf->osen) && hostapd_setup_wpa(hapd))
1294                 return -1;
1295
1296         if (accounting_init(hapd)) {
1297                 wpa_printf(MSG_ERROR, "Accounting initialization failed.");
1298                 return -1;
1299         }
1300
1301         if (conf->ieee802_11f &&
1302             (hapd->iapp = iapp_init(hapd, conf->iapp_iface)) == NULL) {
1303                 wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization "
1304                            "failed.");
1305                 return -1;
1306         }
1307
1308 #ifdef CONFIG_INTERWORKING
1309         if (gas_serv_init(hapd)) {
1310                 wpa_printf(MSG_ERROR, "GAS server initialization failed");
1311                 return -1;
1312         }
1313
1314         if (conf->qos_map_set_len &&
1315             hostapd_drv_set_qos_map(hapd, conf->qos_map_set,
1316                                     conf->qos_map_set_len)) {
1317                 wpa_printf(MSG_ERROR, "Failed to initialize QoS Map");
1318                 return -1;
1319         }
1320 #endif /* CONFIG_INTERWORKING */
1321
1322         if (conf->bss_load_update_period && bss_load_update_init(hapd)) {
1323                 wpa_printf(MSG_ERROR, "BSS Load initialization failed");
1324                 return -1;
1325         }
1326
1327         if (conf->proxy_arp) {
1328                 if (x_snoop_init(hapd)) {
1329                         wpa_printf(MSG_ERROR,
1330                                    "Generic snooping infrastructure initialization failed");
1331                         return -1;
1332                 }
1333
1334                 if (dhcp_snoop_init(hapd)) {
1335                         wpa_printf(MSG_ERROR,
1336                                    "DHCP snooping initialization failed");
1337                         return -1;
1338                 }
1339
1340                 if (ndisc_snoop_init(hapd)) {
1341                         wpa_printf(MSG_ERROR,
1342                                    "Neighbor Discovery snooping initialization failed");
1343                         return -1;
1344                 }
1345         }
1346
1347         if (!hostapd_drv_none(hapd) && vlan_init(hapd)) {
1348                 wpa_printf(MSG_ERROR, "VLAN initialization failed.");
1349                 return -1;
1350         }
1351
1352         if (!conf->start_disabled && ieee802_11_set_beacon(hapd) < 0)
1353                 return -1;
1354
1355         if (hapd->wpa_auth && wpa_init_keys(hapd->wpa_auth) < 0)
1356                 return -1;
1357
1358         if (hapd->driver && hapd->driver->set_operstate)
1359                 hapd->driver->set_operstate(hapd->drv_priv, 1);
1360
1361         return 0;
1362 }
1363
1364
1365 static void hostapd_tx_queue_params(struct hostapd_iface *iface)
1366 {
1367         struct hostapd_data *hapd = iface->bss[0];
1368         int i;
1369         struct hostapd_tx_queue_params *p;
1370
1371 #ifdef CONFIG_MESH
1372         if ((hapd->conf->mesh & MESH_ENABLED) && iface->mconf == NULL)
1373                 return;
1374 #endif /* CONFIG_MESH */
1375
1376         for (i = 0; i < NUM_TX_QUEUES; i++) {
1377                 p = &iface->conf->tx_queue[i];
1378
1379                 if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin,
1380                                                 p->cwmax, p->burst)) {
1381                         wpa_printf(MSG_DEBUG, "Failed to set TX queue "
1382                                    "parameters for queue %d.", i);
1383                         /* Continue anyway */
1384                 }
1385         }
1386 }
1387
1388
1389 static int hostapd_set_acl_list(struct hostapd_data *hapd,
1390                                 struct mac_acl_entry *mac_acl,
1391                                 int n_entries, u8 accept_acl)
1392 {
1393         struct hostapd_acl_params *acl_params;
1394         int i, err;
1395
1396         acl_params = os_zalloc(sizeof(*acl_params) +
1397                                (n_entries * sizeof(acl_params->mac_acl[0])));
1398         if (!acl_params)
1399                 return -ENOMEM;
1400
1401         for (i = 0; i < n_entries; i++)
1402                 os_memcpy(acl_params->mac_acl[i].addr, mac_acl[i].addr,
1403                           ETH_ALEN);
1404
1405         acl_params->acl_policy = accept_acl;
1406         acl_params->num_mac_acl = n_entries;
1407
1408         err = hostapd_drv_set_acl(hapd, acl_params);
1409
1410         os_free(acl_params);
1411
1412         return err;
1413 }
1414
1415
1416 static void hostapd_set_acl(struct hostapd_data *hapd)
1417 {
1418         struct hostapd_config *conf = hapd->iconf;
1419         int err;
1420         u8 accept_acl;
1421
1422         if (hapd->iface->drv_max_acl_mac_addrs == 0)
1423                 return;
1424
1425         if (conf->bss[0]->macaddr_acl == DENY_UNLESS_ACCEPTED) {
1426                 accept_acl = 1;
1427                 err = hostapd_set_acl_list(hapd, conf->bss[0]->accept_mac,
1428                                            conf->bss[0]->num_accept_mac,
1429                                            accept_acl);
1430                 if (err) {
1431                         wpa_printf(MSG_DEBUG, "Failed to set accept acl");
1432                         return;
1433                 }
1434         } else if (conf->bss[0]->macaddr_acl == ACCEPT_UNLESS_DENIED) {
1435                 accept_acl = 0;
1436                 err = hostapd_set_acl_list(hapd, conf->bss[0]->deny_mac,
1437                                            conf->bss[0]->num_deny_mac,
1438                                            accept_acl);
1439                 if (err) {
1440                         wpa_printf(MSG_DEBUG, "Failed to set deny acl");
1441                         return;
1442                 }
1443         }
1444 }
1445
1446
1447 static int start_ctrl_iface_bss(struct hostapd_data *hapd)
1448 {
1449         if (!hapd->iface->interfaces ||
1450             !hapd->iface->interfaces->ctrl_iface_init)
1451                 return 0;
1452
1453         if (hapd->iface->interfaces->ctrl_iface_init(hapd)) {
1454                 wpa_printf(MSG_ERROR,
1455                            "Failed to setup control interface for %s",
1456                            hapd->conf->iface);
1457                 return -1;
1458         }
1459
1460         return 0;
1461 }
1462
1463
1464 static int start_ctrl_iface(struct hostapd_iface *iface)
1465 {
1466         size_t i;
1467
1468         if (!iface->interfaces || !iface->interfaces->ctrl_iface_init)
1469                 return 0;
1470
1471         for (i = 0; i < iface->num_bss; i++) {
1472                 struct hostapd_data *hapd = iface->bss[i];
1473                 if (iface->interfaces->ctrl_iface_init(hapd)) {
1474                         wpa_printf(MSG_ERROR,
1475                                    "Failed to setup control interface for %s",
1476                                    hapd->conf->iface);
1477                         return -1;
1478                 }
1479         }
1480
1481         return 0;
1482 }
1483
1484
1485 static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx)
1486 {
1487         struct hostapd_iface *iface = eloop_ctx;
1488
1489         if (!iface->wait_channel_update) {
1490                 wpa_printf(MSG_INFO, "Channel list update timeout, but interface was not waiting for it");
1491                 return;
1492         }
1493
1494         /*
1495          * It is possible that the existing channel list is acceptable, so try
1496          * to proceed.
1497          */
1498         wpa_printf(MSG_DEBUG, "Channel list update timeout - try to continue anyway");
1499         setup_interface2(iface);
1500 }
1501
1502
1503 void hostapd_channel_list_updated(struct hostapd_iface *iface, int initiator)
1504 {
1505         if (!iface->wait_channel_update || initiator != REGDOM_SET_BY_USER)
1506                 return;
1507
1508         wpa_printf(MSG_DEBUG, "Channel list updated - continue setup");
1509         eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
1510         setup_interface2(iface);
1511 }
1512
1513
1514 static int setup_interface(struct hostapd_iface *iface)
1515 {
1516         struct hostapd_data *hapd = iface->bss[0];
1517         size_t i;
1518
1519         /*
1520          * It is possible that setup_interface() is called after the interface
1521          * was disabled etc., in which case driver_ap_teardown is possibly set
1522          * to 1. Clear it here so any other key/station deletion, which is not
1523          * part of a teardown flow, would also call the relevant driver
1524          * callbacks.
1525          */
1526         iface->driver_ap_teardown = 0;
1527
1528         if (!iface->phy[0]) {
1529                 const char *phy = hostapd_drv_get_radio_name(hapd);
1530                 if (phy) {
1531                         wpa_printf(MSG_DEBUG, "phy: %s", phy);
1532                         os_strlcpy(iface->phy, phy, sizeof(iface->phy));
1533                 }
1534         }
1535
1536         /*
1537          * Make sure that all BSSes get configured with a pointer to the same
1538          * driver interface.
1539          */
1540         for (i = 1; i < iface->num_bss; i++) {
1541                 iface->bss[i]->driver = hapd->driver;
1542                 iface->bss[i]->drv_priv = hapd->drv_priv;
1543         }
1544
1545         if (hostapd_validate_bssid_configuration(iface))
1546                 return -1;
1547
1548         /*
1549          * Initialize control interfaces early to allow external monitoring of
1550          * channel setup operations that may take considerable amount of time
1551          * especially for DFS cases.
1552          */
1553         if (start_ctrl_iface(iface))
1554                 return -1;
1555
1556         if (hapd->iconf->country[0] && hapd->iconf->country[1]) {
1557                 char country[4], previous_country[4];
1558
1559                 hostapd_set_state(iface, HAPD_IFACE_COUNTRY_UPDATE);
1560                 if (hostapd_get_country(hapd, previous_country) < 0)
1561                         previous_country[0] = '\0';
1562
1563                 os_memcpy(country, hapd->iconf->country, 3);
1564                 country[3] = '\0';
1565                 if (hostapd_set_country(hapd, country) < 0) {
1566                         wpa_printf(MSG_ERROR, "Failed to set country code");
1567                         return -1;
1568                 }
1569
1570                 wpa_printf(MSG_DEBUG, "Previous country code %s, new country code %s",
1571                            previous_country, country);
1572
1573                 if (os_strncmp(previous_country, country, 2) != 0) {
1574                         wpa_printf(MSG_DEBUG, "Continue interface setup after channel list update");
1575                         iface->wait_channel_update = 1;
1576                         eloop_register_timeout(5, 0,
1577                                                channel_list_update_timeout,
1578                                                iface, NULL);
1579                         return 0;
1580                 }
1581         }
1582
1583         return setup_interface2(iface);
1584 }
1585
1586
1587 static int setup_interface2(struct hostapd_iface *iface)
1588 {
1589         iface->wait_channel_update = 0;
1590
1591         if (hostapd_get_hw_features(iface)) {
1592                 /* Not all drivers support this yet, so continue without hw
1593                  * feature data. */
1594         } else {
1595                 int ret = hostapd_select_hw_mode(iface);
1596                 if (ret < 0) {
1597                         wpa_printf(MSG_ERROR, "Could not select hw_mode and "
1598                                    "channel. (%d)", ret);
1599                         goto fail;
1600                 }
1601                 if (ret == 1) {
1602                         wpa_printf(MSG_DEBUG, "Interface initialization will be completed in a callback (ACS)");
1603                         return 0;
1604                 }
1605                 ret = hostapd_check_ht_capab(iface);
1606                 if (ret < 0)
1607                         goto fail;
1608                 if (ret == 1) {
1609                         wpa_printf(MSG_DEBUG, "Interface initialization will "
1610                                    "be completed in a callback");
1611                         return 0;
1612                 }
1613
1614                 if (iface->conf->ieee80211h)
1615                         wpa_printf(MSG_DEBUG, "DFS support is enabled");
1616         }
1617         return hostapd_setup_interface_complete(iface, 0);
1618
1619 fail:
1620         hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1621         wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1622         if (iface->interfaces && iface->interfaces->terminate_on_error)
1623                 eloop_terminate();
1624         return -1;
1625 }
1626
1627
1628 #ifdef CONFIG_FST
1629
1630 static const u8 * fst_hostapd_get_bssid_cb(void *ctx)
1631 {
1632         struct hostapd_data *hapd = ctx;
1633
1634         return hapd->own_addr;
1635 }
1636
1637
1638 static void fst_hostapd_get_channel_info_cb(void *ctx,
1639                                             enum hostapd_hw_mode *hw_mode,
1640                                             u8 *channel)
1641 {
1642         struct hostapd_data *hapd = ctx;
1643
1644         *hw_mode = ieee80211_freq_to_chan(hapd->iface->freq, channel);
1645 }
1646
1647
1648 static void fst_hostapd_set_ies_cb(void *ctx, const struct wpabuf *fst_ies)
1649 {
1650         struct hostapd_data *hapd = ctx;
1651
1652         if (hapd->iface->fst_ies != fst_ies) {
1653                 hapd->iface->fst_ies = fst_ies;
1654                 if (ieee802_11_set_beacon(hapd))
1655                         wpa_printf(MSG_WARNING, "FST: Cannot set beacon");
1656         }
1657 }
1658
1659
1660 static int fst_hostapd_send_action_cb(void *ctx, const u8 *da,
1661                                       struct wpabuf *buf)
1662 {
1663         struct hostapd_data *hapd = ctx;
1664
1665         return hostapd_drv_send_action(hapd, hapd->iface->freq, 0, da,
1666                                        wpabuf_head(buf), wpabuf_len(buf));
1667 }
1668
1669
1670 static const struct wpabuf * fst_hostapd_get_mb_ie_cb(void *ctx, const u8 *addr)
1671 {
1672         struct hostapd_data *hapd = ctx;
1673         struct sta_info *sta = ap_get_sta(hapd, addr);
1674
1675         return sta ? sta->mb_ies : NULL;
1676 }
1677
1678
1679 static void fst_hostapd_update_mb_ie_cb(void *ctx, const u8 *addr,
1680                                         const u8 *buf, size_t size)
1681 {
1682         struct hostapd_data *hapd = ctx;
1683         struct sta_info *sta = ap_get_sta(hapd, addr);
1684
1685         if (sta) {
1686                 struct mb_ies_info info;
1687
1688                 if (!mb_ies_info_by_ies(&info, buf, size)) {
1689                         wpabuf_free(sta->mb_ies);
1690                         sta->mb_ies = mb_ies_by_info(&info);
1691                 }
1692         }
1693 }
1694
1695
1696 static const u8 * fst_hostapd_get_sta(struct fst_get_peer_ctx **get_ctx,
1697                                       Boolean mb_only)
1698 {
1699         struct sta_info *s = (struct sta_info *) *get_ctx;
1700
1701         if (mb_only) {
1702                 for (; s && !s->mb_ies; s = s->next)
1703                         ;
1704         }
1705
1706         if (s) {
1707                 *get_ctx = (struct fst_get_peer_ctx *) s->next;
1708
1709                 return s->addr;
1710         }
1711
1712         *get_ctx = NULL;
1713         return NULL;
1714 }
1715
1716
1717 static const u8 * fst_hostapd_get_peer_first(void *ctx,
1718                                              struct fst_get_peer_ctx **get_ctx,
1719                                              Boolean mb_only)
1720 {
1721         struct hostapd_data *hapd = ctx;
1722
1723         *get_ctx = (struct fst_get_peer_ctx *) hapd->sta_list;
1724
1725         return fst_hostapd_get_sta(get_ctx, mb_only);
1726 }
1727
1728
1729 static const u8 * fst_hostapd_get_peer_next(void *ctx,
1730                                             struct fst_get_peer_ctx **get_ctx,
1731                                             Boolean mb_only)
1732 {
1733         return fst_hostapd_get_sta(get_ctx, mb_only);
1734 }
1735
1736
1737 void fst_hostapd_fill_iface_obj(struct hostapd_data *hapd,
1738                                 struct fst_wpa_obj *iface_obj)
1739 {
1740         iface_obj->ctx = hapd;
1741         iface_obj->get_bssid = fst_hostapd_get_bssid_cb;
1742         iface_obj->get_channel_info = fst_hostapd_get_channel_info_cb;
1743         iface_obj->set_ies = fst_hostapd_set_ies_cb;
1744         iface_obj->send_action = fst_hostapd_send_action_cb;
1745         iface_obj->get_mb_ie = fst_hostapd_get_mb_ie_cb;
1746         iface_obj->update_mb_ie = fst_hostapd_update_mb_ie_cb;
1747         iface_obj->get_peer_first = fst_hostapd_get_peer_first;
1748         iface_obj->get_peer_next = fst_hostapd_get_peer_next;
1749 }
1750
1751 #endif /* CONFIG_FST */
1752
1753 #ifdef CONFIG_OWE
1754
1755 static int hostapd_owe_iface_iter(struct hostapd_iface *iface, void *ctx)
1756 {
1757         struct hostapd_data *hapd = ctx;
1758         size_t i;
1759
1760         for (i = 0; i < iface->num_bss; i++) {
1761                 struct hostapd_data *bss = iface->bss[i];
1762
1763                 if (os_strcmp(hapd->conf->owe_transition_ifname,
1764                               bss->conf->iface) != 0)
1765                         continue;
1766
1767                 wpa_printf(MSG_DEBUG,
1768                            "OWE: ifname=%s found transition mode ifname=%s BSSID "
1769                            MACSTR " SSID %s",
1770                            hapd->conf->iface, bss->conf->iface,
1771                            MAC2STR(bss->own_addr),
1772                            wpa_ssid_txt(bss->conf->ssid.ssid,
1773                                         bss->conf->ssid.ssid_len));
1774                 if (!bss->conf->ssid.ssid_set || !bss->conf->ssid.ssid_len ||
1775                     is_zero_ether_addr(bss->own_addr))
1776                         continue;
1777
1778                 os_memcpy(hapd->conf->owe_transition_bssid, bss->own_addr,
1779                           ETH_ALEN);
1780                 os_memcpy(hapd->conf->owe_transition_ssid,
1781                           bss->conf->ssid.ssid, bss->conf->ssid.ssid_len);
1782                 hapd->conf->owe_transition_ssid_len = bss->conf->ssid.ssid_len;
1783                 wpa_printf(MSG_DEBUG,
1784                            "OWE: Copied transition mode information");
1785                 return 1;
1786         }
1787
1788         return 0;
1789 }
1790
1791
1792 int hostapd_owe_trans_get_info(struct hostapd_data *hapd)
1793 {
1794         if (hapd->conf->owe_transition_ssid_len > 0 &&
1795             !is_zero_ether_addr(hapd->conf->owe_transition_bssid))
1796                 return 0;
1797
1798         /* Find transition mode SSID/BSSID information from a BSS operated by
1799          * this hostapd instance. */
1800         if (!hapd->iface->interfaces ||
1801             !hapd->iface->interfaces->for_each_interface)
1802                 return hostapd_owe_iface_iter(hapd->iface, hapd);
1803         else
1804                 return hapd->iface->interfaces->for_each_interface(
1805                         hapd->iface->interfaces, hostapd_owe_iface_iter, hapd);
1806 }
1807
1808
1809 static int hostapd_owe_iface_iter2(struct hostapd_iface *iface, void *ctx)
1810 {
1811         size_t i;
1812
1813         for (i = 0; i < iface->num_bss; i++) {
1814                 struct hostapd_data *bss = iface->bss[i];
1815                 int res;
1816
1817                 if (!bss->conf->owe_transition_ifname[0])
1818                         continue;
1819                 res = hostapd_owe_trans_get_info(bss);
1820                 if (res == 0)
1821                         continue;
1822                 wpa_printf(MSG_DEBUG,
1823                            "OWE: Matching transition mode interface enabled - update beacon data for %s",
1824                            bss->conf->iface);
1825                 ieee802_11_set_beacon(bss);
1826         }
1827
1828         return 0;
1829 }
1830
1831 #endif /* CONFIG_OWE */
1832
1833
1834 static void hostapd_owe_update_trans(struct hostapd_iface *iface)
1835 {
1836 #ifdef CONFIG_OWE
1837         /* Check whether the enabled BSS can complete OWE transition mode
1838          * configuration for any pending interface. */
1839         if (!iface->interfaces ||
1840             !iface->interfaces->for_each_interface)
1841                 hostapd_owe_iface_iter2(iface, NULL);
1842         else
1843                 iface->interfaces->for_each_interface(
1844                         iface->interfaces, hostapd_owe_iface_iter2, NULL);
1845 #endif /* CONFIG_OWE */
1846 }
1847
1848
1849 static void hostapd_interface_setup_failure_handler(void *eloop_ctx,
1850                                                     void *timeout_ctx)
1851 {
1852         struct hostapd_iface *iface = eloop_ctx;
1853         struct hostapd_data *hapd;
1854
1855         if (iface->num_bss < 1 || !iface->bss || !iface->bss[0])
1856                 return;
1857         hapd = iface->bss[0];
1858         if (hapd->setup_complete_cb)
1859                 hapd->setup_complete_cb(hapd->setup_complete_cb_ctx);
1860 }
1861
1862
1863 static int hostapd_setup_interface_complete_sync(struct hostapd_iface *iface,
1864                                                  int err)
1865 {
1866         struct hostapd_data *hapd = iface->bss[0];
1867         size_t j;
1868         u8 *prev_addr;
1869         int delay_apply_cfg = 0;
1870         int res_dfs_offload = 0;
1871
1872         if (err)
1873                 goto fail;
1874
1875         wpa_printf(MSG_DEBUG, "Completing interface initialization");
1876         if (iface->conf->channel) {
1877 #ifdef NEED_AP_MLME
1878                 int res;
1879 #endif /* NEED_AP_MLME */
1880
1881                 iface->freq = hostapd_hw_get_freq(hapd, iface->conf->channel);
1882                 wpa_printf(MSG_DEBUG, "Mode: %s  Channel: %d  "
1883                            "Frequency: %d MHz",
1884                            hostapd_hw_mode_txt(iface->conf->hw_mode),
1885                            iface->conf->channel, iface->freq);
1886
1887 #ifdef NEED_AP_MLME
1888                 /* Handle DFS only if it is not offloaded to the driver */
1889                 if (!(iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD)) {
1890                         /* Check DFS */
1891                         res = hostapd_handle_dfs(iface);
1892                         if (res <= 0) {
1893                                 if (res < 0)
1894                                         goto fail;
1895                                 return res;
1896                         }
1897                 } else {
1898                         /* If DFS is offloaded to the driver */
1899                         res_dfs_offload = hostapd_handle_dfs_offload(iface);
1900                         if (res_dfs_offload <= 0) {
1901                                 if (res_dfs_offload < 0)
1902                                         goto fail;
1903                         } else {
1904                                 wpa_printf(MSG_DEBUG,
1905                                            "Proceed with AP/channel setup");
1906                                 /*
1907                                  * If this is a DFS channel, move to completing
1908                                  * AP setup.
1909                                  */
1910                                 if (res_dfs_offload == 1)
1911                                         goto dfs_offload;
1912                                 /* Otherwise fall through. */
1913                         }
1914                 }
1915 #endif /* NEED_AP_MLME */
1916
1917 #ifdef CONFIG_MESH
1918                 if (iface->mconf != NULL) {
1919                         wpa_printf(MSG_DEBUG,
1920                                    "%s: Mesh configuration will be applied while joining the mesh network",
1921                                    iface->bss[0]->conf->iface);
1922                         delay_apply_cfg = 1;
1923                 }
1924 #endif /* CONFIG_MESH */
1925
1926                 if (!delay_apply_cfg &&
1927                     hostapd_set_freq(hapd, hapd->iconf->hw_mode, iface->freq,
1928                                      hapd->iconf->channel,
1929                                      hapd->iconf->ieee80211n,
1930                                      hapd->iconf->ieee80211ac,
1931                                      hapd->iconf->ieee80211ax,
1932                                      hapd->iconf->secondary_channel,
1933                                      hostapd_get_oper_chwidth(hapd->iconf),
1934                                      hostapd_get_oper_centr_freq_seg0_idx(
1935                                              hapd->iconf),
1936                                      hostapd_get_oper_centr_freq_seg1_idx(
1937                                              hapd->iconf))) {
1938                         wpa_printf(MSG_ERROR, "Could not set channel for "
1939                                    "kernel driver");
1940                         goto fail;
1941                 }
1942         }
1943
1944         if (iface->current_mode) {
1945                 if (hostapd_prepare_rates(iface, iface->current_mode)) {
1946                         wpa_printf(MSG_ERROR, "Failed to prepare rates "
1947                                    "table.");
1948                         hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
1949                                        HOSTAPD_LEVEL_WARNING,
1950                                        "Failed to prepare rates table.");
1951                         goto fail;
1952                 }
1953         }
1954
1955         if (hapd->iconf->rts_threshold >= -1 &&
1956             hostapd_set_rts(hapd, hapd->iconf->rts_threshold) &&
1957             hapd->iconf->rts_threshold >= -1) {
1958                 wpa_printf(MSG_ERROR, "Could not set RTS threshold for "
1959                            "kernel driver");
1960                 goto fail;
1961         }
1962
1963         if (hapd->iconf->fragm_threshold >= -1 &&
1964             hostapd_set_frag(hapd, hapd->iconf->fragm_threshold) &&
1965             hapd->iconf->fragm_threshold != -1) {
1966                 wpa_printf(MSG_ERROR, "Could not set fragmentation threshold "
1967                            "for kernel driver");
1968                 goto fail;
1969         }
1970
1971         prev_addr = hapd->own_addr;
1972
1973         for (j = 0; j < iface->num_bss; j++) {
1974                 hapd = iface->bss[j];
1975                 if (j)
1976                         os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
1977                 if (hostapd_setup_bss(hapd, j == 0)) {
1978                         for (;;) {
1979                                 hapd = iface->bss[j];
1980                                 hostapd_bss_deinit_no_free(hapd);
1981                                 hostapd_free_hapd_data(hapd);
1982                                 if (j == 0)
1983                                         break;
1984                                 j--;
1985                         }
1986                         goto fail;
1987                 }
1988                 if (is_zero_ether_addr(hapd->conf->bssid))
1989                         prev_addr = hapd->own_addr;
1990         }
1991         hapd = iface->bss[0];
1992
1993         hostapd_tx_queue_params(iface);
1994
1995         ap_list_init(iface);
1996
1997         hostapd_set_acl(hapd);
1998
1999         if (hostapd_driver_commit(hapd) < 0) {
2000                 wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
2001                            "configuration", __func__);
2002                 goto fail;
2003         }
2004
2005         /*
2006          * WPS UPnP module can be initialized only when the "upnp_iface" is up.
2007          * If "interface" and "upnp_iface" are the same (e.g., non-bridge
2008          * mode), the interface is up only after driver_commit, so initialize
2009          * WPS after driver_commit.
2010          */
2011         for (j = 0; j < iface->num_bss; j++) {
2012                 if (hostapd_init_wps_complete(iface->bss[j]))
2013                         goto fail;
2014         }
2015
2016         if ((iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
2017             !res_dfs_offload) {
2018                 /*
2019                  * If freq is DFS, and DFS is offloaded to the driver, then wait
2020                  * for CAC to complete.
2021                  */
2022                 wpa_printf(MSG_DEBUG, "%s: Wait for CAC to complete", __func__);
2023                 return res_dfs_offload;
2024         }
2025
2026 #ifdef NEED_AP_MLME
2027 dfs_offload:
2028 #endif /* NEED_AP_MLME */
2029
2030 #ifdef CONFIG_FST
2031         if (hapd->iconf->fst_cfg.group_id[0]) {
2032                 struct fst_wpa_obj iface_obj;
2033
2034                 fst_hostapd_fill_iface_obj(hapd, &iface_obj);
2035                 iface->fst = fst_attach(hapd->conf->iface, hapd->own_addr,
2036                                         &iface_obj, &hapd->iconf->fst_cfg);
2037                 if (!iface->fst) {
2038                         wpa_printf(MSG_ERROR, "Could not attach to FST %s",
2039                                    hapd->iconf->fst_cfg.group_id);
2040                         goto fail;
2041                 }
2042         }
2043 #endif /* CONFIG_FST */
2044
2045         hostapd_set_state(iface, HAPD_IFACE_ENABLED);
2046         hostapd_owe_update_trans(iface);
2047         airtime_policy_update_init(iface);
2048         wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_ENABLED);
2049         if (hapd->setup_complete_cb)
2050                 hapd->setup_complete_cb(hapd->setup_complete_cb_ctx);
2051
2052         wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
2053                    iface->bss[0]->conf->iface);
2054         if (iface->interfaces && iface->interfaces->terminate_on_error > 0)
2055                 iface->interfaces->terminate_on_error--;
2056
2057         for (j = 0; j < iface->num_bss; j++)
2058                 hostapd_neighbor_set_own_report(iface->bss[j]);
2059
2060         return 0;
2061
2062 fail:
2063         wpa_printf(MSG_ERROR, "Interface initialization failed");
2064         hostapd_set_state(iface, HAPD_IFACE_DISABLED);
2065         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
2066 #ifdef CONFIG_FST
2067         if (iface->fst) {
2068                 fst_detach(iface->fst);
2069                 iface->fst = NULL;
2070         }
2071 #endif /* CONFIG_FST */
2072
2073         if (iface->interfaces && iface->interfaces->terminate_on_error) {
2074                 eloop_terminate();
2075         } else if (hapd->setup_complete_cb) {
2076                 /*
2077                  * Calling hapd->setup_complete_cb directly may cause iface
2078                  * deinitialization which may be accessed later by the caller.
2079                  */
2080                 eloop_register_timeout(0, 0,
2081                                        hostapd_interface_setup_failure_handler,
2082                                        iface, NULL);
2083         }
2084
2085         return -1;
2086 }
2087
2088
2089 /**
2090  * hostapd_setup_interface_complete - Complete interface setup
2091  *
2092  * This function is called when previous steps in the interface setup has been
2093  * completed. This can also start operations, e.g., DFS, that will require
2094  * additional processing before interface is ready to be enabled. Such
2095  * operations will call this function from eloop callbacks when finished.
2096  */
2097 int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err)
2098 {
2099         struct hapd_interfaces *interfaces = iface->interfaces;
2100         struct hostapd_data *hapd = iface->bss[0];
2101         unsigned int i;
2102         int not_ready_in_sync_ifaces = 0;
2103
2104         if (!iface->need_to_start_in_sync)
2105                 return hostapd_setup_interface_complete_sync(iface, err);
2106
2107         if (err) {
2108                 wpa_printf(MSG_ERROR, "Interface initialization failed");
2109                 hostapd_set_state(iface, HAPD_IFACE_DISABLED);
2110                 iface->need_to_start_in_sync = 0;
2111                 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
2112                 if (interfaces && interfaces->terminate_on_error)
2113                         eloop_terminate();
2114                 return -1;
2115         }
2116
2117         if (iface->ready_to_start_in_sync) {
2118                 /* Already in ready and waiting. should never happpen */
2119                 return 0;
2120         }
2121
2122         for (i = 0; i < interfaces->count; i++) {
2123                 if (interfaces->iface[i]->need_to_start_in_sync &&
2124                     !interfaces->iface[i]->ready_to_start_in_sync)
2125                         not_ready_in_sync_ifaces++;
2126         }
2127
2128         /*
2129          * Check if this is the last interface, if yes then start all the other
2130          * waiting interfaces. If not, add this interface to the waiting list.
2131          */
2132         if (not_ready_in_sync_ifaces > 1 && iface->state == HAPD_IFACE_DFS) {
2133                 /*
2134                  * If this interface went through CAC, do not synchronize, just
2135                  * start immediately.
2136                  */
2137                 iface->need_to_start_in_sync = 0;
2138                 wpa_printf(MSG_INFO,
2139                            "%s: Finished CAC - bypass sync and start interface",
2140                            iface->bss[0]->conf->iface);
2141                 return hostapd_setup_interface_complete_sync(iface, err);
2142         }
2143
2144         if (not_ready_in_sync_ifaces > 1) {
2145                 /* need to wait as there are other interfaces still coming up */
2146                 iface->ready_to_start_in_sync = 1;
2147                 wpa_printf(MSG_INFO,
2148                            "%s: Interface waiting to sync with other interfaces",
2149                            iface->bss[0]->conf->iface);
2150                 return 0;
2151         }
2152
2153         wpa_printf(MSG_INFO,
2154                    "%s: Last interface to sync - starting all interfaces",
2155                    iface->bss[0]->conf->iface);
2156         iface->need_to_start_in_sync = 0;
2157         hostapd_setup_interface_complete_sync(iface, err);
2158         for (i = 0; i < interfaces->count; i++) {
2159                 if (interfaces->iface[i]->need_to_start_in_sync &&
2160                     interfaces->iface[i]->ready_to_start_in_sync) {
2161                         hostapd_setup_interface_complete_sync(
2162                                 interfaces->iface[i], 0);
2163                         /* Only once the interfaces are sync started */
2164                         interfaces->iface[i]->need_to_start_in_sync = 0;
2165                 }
2166         }
2167
2168         return 0;
2169 }
2170
2171
2172 /**
2173  * hostapd_setup_interface - Setup of an interface
2174  * @iface: Pointer to interface data.
2175  * Returns: 0 on success, -1 on failure
2176  *
2177  * Initializes the driver interface, validates the configuration,
2178  * and sets driver parameters based on the configuration.
2179  * Flushes old stations, sets the channel, encryption,
2180  * beacons, and WDS links based on the configuration.
2181  *
2182  * If interface setup requires more time, e.g., to perform HT co-ex scans, ACS,
2183  * or DFS operations, this function returns 0 before such operations have been
2184  * completed. The pending operations are registered into eloop and will be
2185  * completed from eloop callbacks. Those callbacks end up calling
2186  * hostapd_setup_interface_complete() once setup has been completed.
2187  */
2188 int hostapd_setup_interface(struct hostapd_iface *iface)
2189 {
2190         int ret;
2191
2192         ret = setup_interface(iface);
2193         if (ret) {
2194                 wpa_printf(MSG_ERROR, "%s: Unable to setup interface.",
2195                            iface->bss[0]->conf->iface);
2196                 return -1;
2197         }
2198
2199         return 0;
2200 }
2201
2202
2203 /**
2204  * hostapd_alloc_bss_data - Allocate and initialize per-BSS data
2205  * @hapd_iface: Pointer to interface data
2206  * @conf: Pointer to per-interface configuration
2207  * @bss: Pointer to per-BSS configuration for this BSS
2208  * Returns: Pointer to allocated BSS data
2209  *
2210  * This function is used to allocate per-BSS data structure. This data will be
2211  * freed after hostapd_cleanup() is called for it during interface
2212  * deinitialization.
2213  */
2214 struct hostapd_data *
2215 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
2216                        struct hostapd_config *conf,
2217                        struct hostapd_bss_config *bss)
2218 {
2219         struct hostapd_data *hapd;
2220
2221         hapd = os_zalloc(sizeof(*hapd));
2222         if (hapd == NULL)
2223                 return NULL;
2224
2225         hapd->new_assoc_sta_cb = hostapd_new_assoc_sta;
2226         hapd->iconf = conf;
2227         hapd->conf = bss;
2228         hapd->iface = hapd_iface;
2229         if (conf)
2230                 hapd->driver = conf->driver;
2231         hapd->ctrl_sock = -1;
2232         dl_list_init(&hapd->ctrl_dst);
2233         dl_list_init(&hapd->nr_db);
2234         hapd->dhcp_sock = -1;
2235 #ifdef CONFIG_IEEE80211R_AP
2236         dl_list_init(&hapd->l2_queue);
2237         dl_list_init(&hapd->l2_oui_queue);
2238 #endif /* CONFIG_IEEE80211R_AP */
2239 #ifdef CONFIG_SAE
2240         dl_list_init(&hapd->sae_commit_queue);
2241 #endif /* CONFIG_SAE */
2242
2243         return hapd;
2244 }
2245
2246
2247 static void hostapd_bss_deinit(struct hostapd_data *hapd)
2248 {
2249         if (!hapd)
2250                 return;
2251         wpa_printf(MSG_DEBUG, "%s: deinit bss %s", __func__,
2252                    hapd->conf ? hapd->conf->iface : "N/A");
2253         hostapd_bss_deinit_no_free(hapd);
2254         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
2255 #ifdef CONFIG_SQLITE
2256         if (hapd->rad_attr_db) {
2257                 sqlite3_close(hapd->rad_attr_db);
2258                 hapd->rad_attr_db = NULL;
2259         }
2260 #endif /* CONFIG_SQLITE */
2261         hostapd_cleanup(hapd);
2262 }
2263
2264
2265 void hostapd_interface_deinit(struct hostapd_iface *iface)
2266 {
2267         int j;
2268
2269         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
2270         if (iface == NULL)
2271                 return;
2272
2273         hostapd_set_state(iface, HAPD_IFACE_DISABLED);
2274
2275         eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
2276         iface->wait_channel_update = 0;
2277
2278 #ifdef CONFIG_FST
2279         if (iface->fst) {
2280                 fst_detach(iface->fst);
2281                 iface->fst = NULL;
2282         }
2283 #endif /* CONFIG_FST */
2284
2285         for (j = (int) iface->num_bss - 1; j >= 0; j--) {
2286                 if (!iface->bss)
2287                         break;
2288                 hostapd_bss_deinit(iface->bss[j]);
2289         }
2290
2291 #ifdef CONFIG_IEEE80211N
2292 #ifdef NEED_AP_MLME
2293         hostapd_stop_setup_timers(iface);
2294         eloop_cancel_timeout(ap_ht2040_timeout, iface, NULL);
2295 #endif /* NEED_AP_MLME */
2296 #endif /* CONFIG_IEEE80211N */
2297 }
2298
2299
2300 void hostapd_interface_free(struct hostapd_iface *iface)
2301 {
2302         size_t j;
2303         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
2304         for (j = 0; j < iface->num_bss; j++) {
2305                 if (!iface->bss)
2306                         break;
2307                 wpa_printf(MSG_DEBUG, "%s: free hapd %p",
2308                            __func__, iface->bss[j]);
2309                 os_free(iface->bss[j]);
2310         }
2311         hostapd_cleanup_iface(iface);
2312 }
2313
2314
2315 struct hostapd_iface * hostapd_alloc_iface(void)
2316 {
2317         struct hostapd_iface *hapd_iface;
2318
2319         hapd_iface = os_zalloc(sizeof(*hapd_iface));
2320         if (!hapd_iface)
2321                 return NULL;
2322
2323         dl_list_init(&hapd_iface->sta_seen);
2324
2325         return hapd_iface;
2326 }
2327
2328
2329 /**
2330  * hostapd_init - Allocate and initialize per-interface data
2331  * @config_file: Path to the configuration file
2332  * Returns: Pointer to the allocated interface data or %NULL on failure
2333  *
2334  * This function is used to allocate main data structures for per-interface
2335  * data. The allocated data buffer will be freed by calling
2336  * hostapd_cleanup_iface().
2337  */
2338 struct hostapd_iface * hostapd_init(struct hapd_interfaces *interfaces,
2339                                     const char *config_file)
2340 {
2341         struct hostapd_iface *hapd_iface = NULL;
2342         struct hostapd_config *conf = NULL;
2343         struct hostapd_data *hapd;
2344         size_t i;
2345
2346         hapd_iface = hostapd_alloc_iface();
2347         if (hapd_iface == NULL)
2348                 goto fail;
2349
2350         hapd_iface->config_fname = os_strdup(config_file);
2351         if (hapd_iface->config_fname == NULL)
2352                 goto fail;
2353
2354         conf = interfaces->config_read_cb(hapd_iface->config_fname);
2355         if (conf == NULL)
2356                 goto fail;
2357         hapd_iface->conf = conf;
2358
2359         hapd_iface->num_bss = conf->num_bss;
2360         hapd_iface->bss = os_calloc(conf->num_bss,
2361                                     sizeof(struct hostapd_data *));
2362         if (hapd_iface->bss == NULL)
2363                 goto fail;
2364
2365         for (i = 0; i < conf->num_bss; i++) {
2366                 hapd = hapd_iface->bss[i] =
2367                         hostapd_alloc_bss_data(hapd_iface, conf,
2368                                                conf->bss[i]);
2369                 if (hapd == NULL)
2370                         goto fail;
2371                 hapd->msg_ctx = hapd;
2372         }
2373
2374         return hapd_iface;
2375
2376 fail:
2377         wpa_printf(MSG_ERROR, "Failed to set up interface with %s",
2378                    config_file);
2379         if (conf)
2380                 hostapd_config_free(conf);
2381         if (hapd_iface) {
2382                 os_free(hapd_iface->config_fname);
2383                 os_free(hapd_iface->bss);
2384                 wpa_printf(MSG_DEBUG, "%s: free iface %p",
2385                            __func__, hapd_iface);
2386                 os_free(hapd_iface);
2387         }
2388         return NULL;
2389 }
2390
2391
2392 static int ifname_in_use(struct hapd_interfaces *interfaces, const char *ifname)
2393 {
2394         size_t i, j;
2395
2396         for (i = 0; i < interfaces->count; i++) {
2397                 struct hostapd_iface *iface = interfaces->iface[i];
2398                 for (j = 0; j < iface->num_bss; j++) {
2399                         struct hostapd_data *hapd = iface->bss[j];
2400                         if (os_strcmp(ifname, hapd->conf->iface) == 0)
2401                                 return 1;
2402                 }
2403         }
2404
2405         return 0;
2406 }
2407
2408
2409 /**
2410  * hostapd_interface_init_bss - Read configuration file and init BSS data
2411  *
2412  * This function is used to parse configuration file for a BSS. This BSS is
2413  * added to an existing interface sharing the same radio (if any) or a new
2414  * interface is created if this is the first interface on a radio. This
2415  * allocate memory for the BSS. No actual driver operations are started.
2416  *
2417  * This is similar to hostapd_interface_init(), but for a case where the
2418  * configuration is used to add a single BSS instead of all BSSes for a radio.
2419  */
2420 struct hostapd_iface *
2421 hostapd_interface_init_bss(struct hapd_interfaces *interfaces, const char *phy,
2422                            const char *config_fname, int debug)
2423 {
2424         struct hostapd_iface *new_iface = NULL, *iface = NULL;
2425         struct hostapd_data *hapd;
2426         int k;
2427         size_t i, bss_idx;
2428
2429         if (!phy || !*phy)
2430                 return NULL;
2431
2432         for (i = 0; i < interfaces->count; i++) {
2433                 if (os_strcmp(interfaces->iface[i]->phy, phy) == 0) {
2434                         iface = interfaces->iface[i];
2435                         break;
2436                 }
2437         }
2438
2439         wpa_printf(MSG_INFO, "Configuration file: %s (phy %s)%s",
2440                    config_fname, phy, iface ? "" : " --> new PHY");
2441         if (iface) {
2442                 struct hostapd_config *conf;
2443                 struct hostapd_bss_config **tmp_conf;
2444                 struct hostapd_data **tmp_bss;
2445                 struct hostapd_bss_config *bss;
2446                 const char *ifname;
2447
2448                 /* Add new BSS to existing iface */
2449                 conf = interfaces->config_read_cb(config_fname);
2450                 if (conf == NULL)
2451                         return NULL;
2452                 if (conf->num_bss > 1) {
2453                         wpa_printf(MSG_ERROR, "Multiple BSSes specified in BSS-config");
2454                         hostapd_config_free(conf);
2455                         return NULL;
2456                 }
2457
2458                 ifname = conf->bss[0]->iface;
2459                 if (ifname[0] != '\0' && ifname_in_use(interfaces, ifname)) {
2460                         wpa_printf(MSG_ERROR,
2461                                    "Interface name %s already in use", ifname);
2462                         hostapd_config_free(conf);
2463                         return NULL;
2464                 }
2465
2466                 tmp_conf = os_realloc_array(
2467                         iface->conf->bss, iface->conf->num_bss + 1,
2468                         sizeof(struct hostapd_bss_config *));
2469                 tmp_bss = os_realloc_array(iface->bss, iface->num_bss + 1,
2470                                            sizeof(struct hostapd_data *));
2471                 if (tmp_bss)
2472                         iface->bss = tmp_bss;
2473                 if (tmp_conf) {
2474                         iface->conf->bss = tmp_conf;
2475                         iface->conf->last_bss = tmp_conf[0];
2476                 }
2477                 if (tmp_bss == NULL || tmp_conf == NULL) {
2478                         hostapd_config_free(conf);
2479                         return NULL;
2480                 }
2481                 bss = iface->conf->bss[iface->conf->num_bss] = conf->bss[0];
2482                 iface->conf->num_bss++;
2483
2484                 hapd = hostapd_alloc_bss_data(iface, iface->conf, bss);
2485                 if (hapd == NULL) {
2486                         iface->conf->num_bss--;
2487                         hostapd_config_free(conf);
2488                         return NULL;
2489                 }
2490                 iface->conf->last_bss = bss;
2491                 iface->bss[iface->num_bss] = hapd;
2492                 hapd->msg_ctx = hapd;
2493
2494                 bss_idx = iface->num_bss++;
2495                 conf->num_bss--;
2496                 conf->bss[0] = NULL;
2497                 hostapd_config_free(conf);
2498         } else {
2499                 /* Add a new iface with the first BSS */
2500                 new_iface = iface = hostapd_init(interfaces, config_fname);
2501                 if (!iface)
2502                         return NULL;
2503                 os_strlcpy(iface->phy, phy, sizeof(iface->phy));
2504                 iface->interfaces = interfaces;
2505                 bss_idx = 0;
2506         }
2507
2508         for (k = 0; k < debug; k++) {
2509                 if (iface->bss[bss_idx]->conf->logger_stdout_level > 0)
2510                         iface->bss[bss_idx]->conf->logger_stdout_level--;
2511         }
2512
2513         if (iface->conf->bss[bss_idx]->iface[0] == '\0' &&
2514             !hostapd_drv_none(iface->bss[bss_idx])) {
2515                 wpa_printf(MSG_ERROR, "Interface name not specified in %s",
2516                            config_fname);
2517                 if (new_iface)
2518                         hostapd_interface_deinit_free(new_iface);
2519                 return NULL;
2520         }
2521
2522         return iface;
2523 }
2524
2525
2526 void hostapd_interface_deinit_free(struct hostapd_iface *iface)
2527 {
2528         const struct wpa_driver_ops *driver;
2529         void *drv_priv;
2530
2531         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
2532         if (iface == NULL)
2533                 return;
2534         wpa_printf(MSG_DEBUG, "%s: num_bss=%u conf->num_bss=%u",
2535                    __func__, (unsigned int) iface->num_bss,
2536                    (unsigned int) iface->conf->num_bss);
2537         driver = iface->bss[0]->driver;
2538         drv_priv = iface->bss[0]->drv_priv;
2539         hostapd_interface_deinit(iface);
2540         wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
2541                    __func__, driver, drv_priv);
2542         if (driver && driver->hapd_deinit && drv_priv) {
2543                 driver->hapd_deinit(drv_priv);
2544                 iface->bss[0]->drv_priv = NULL;
2545         }
2546         hostapd_interface_free(iface);
2547 }
2548
2549
2550 static void hostapd_deinit_driver(const struct wpa_driver_ops *driver,
2551                                   void *drv_priv,
2552                                   struct hostapd_iface *hapd_iface)
2553 {
2554         size_t j;
2555
2556         wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
2557                    __func__, driver, drv_priv);
2558         if (driver && driver->hapd_deinit && drv_priv) {
2559                 driver->hapd_deinit(drv_priv);
2560                 for (j = 0; j < hapd_iface->num_bss; j++) {
2561                         wpa_printf(MSG_DEBUG, "%s:bss[%d]->drv_priv=%p",
2562                                    __func__, (int) j,
2563                                    hapd_iface->bss[j]->drv_priv);
2564                         if (hapd_iface->bss[j]->drv_priv == drv_priv) {
2565                                 hapd_iface->bss[j]->drv_priv = NULL;
2566                                 hapd_iface->extended_capa = NULL;
2567                                 hapd_iface->extended_capa_mask = NULL;
2568                                 hapd_iface->extended_capa_len = 0;
2569                         }
2570                 }
2571         }
2572 }
2573
2574
2575 int hostapd_enable_iface(struct hostapd_iface *hapd_iface)
2576 {
2577         size_t j;
2578
2579         if (hapd_iface->bss[0]->drv_priv != NULL) {
2580                 wpa_printf(MSG_ERROR, "Interface %s already enabled",
2581                            hapd_iface->conf->bss[0]->iface);
2582                 return -1;
2583         }
2584
2585         wpa_printf(MSG_DEBUG, "Enable interface %s",
2586                    hapd_iface->conf->bss[0]->iface);
2587
2588         for (j = 0; j < hapd_iface->num_bss; j++)
2589                 hostapd_set_security_params(hapd_iface->conf->bss[j], 1);
2590         if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
2591                 wpa_printf(MSG_INFO, "Invalid configuration - cannot enable");
2592                 return -1;
2593         }
2594
2595         if (hapd_iface->interfaces == NULL ||
2596             hapd_iface->interfaces->driver_init == NULL ||
2597             hapd_iface->interfaces->driver_init(hapd_iface))
2598                 return -1;
2599
2600         if (hostapd_setup_interface(hapd_iface)) {
2601                 hostapd_deinit_driver(hapd_iface->bss[0]->driver,
2602                                       hapd_iface->bss[0]->drv_priv,
2603                                       hapd_iface);
2604                 return -1;
2605         }
2606
2607         return 0;
2608 }
2609
2610
2611 int hostapd_reload_iface(struct hostapd_iface *hapd_iface)
2612 {
2613         size_t j;
2614
2615         wpa_printf(MSG_DEBUG, "Reload interface %s",
2616                    hapd_iface->conf->bss[0]->iface);
2617         for (j = 0; j < hapd_iface->num_bss; j++)
2618                 hostapd_set_security_params(hapd_iface->conf->bss[j], 1);
2619         if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
2620                 wpa_printf(MSG_ERROR, "Updated configuration is invalid");
2621                 return -1;
2622         }
2623         hostapd_clear_old(hapd_iface);
2624         for (j = 0; j < hapd_iface->num_bss; j++)
2625                 hostapd_reload_bss(hapd_iface->bss[j]);
2626
2627         return 0;
2628 }
2629
2630
2631 int hostapd_disable_iface(struct hostapd_iface *hapd_iface)
2632 {
2633         size_t j;
2634         const struct wpa_driver_ops *driver;
2635         void *drv_priv;
2636
2637         if (hapd_iface == NULL)
2638                 return -1;
2639
2640         if (hapd_iface->bss[0]->drv_priv == NULL) {
2641                 wpa_printf(MSG_INFO, "Interface %s already disabled",
2642                            hapd_iface->conf->bss[0]->iface);
2643                 return -1;
2644         }
2645
2646         wpa_msg(hapd_iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
2647         driver = hapd_iface->bss[0]->driver;
2648         drv_priv = hapd_iface->bss[0]->drv_priv;
2649
2650         hapd_iface->driver_ap_teardown =
2651                 !!(hapd_iface->drv_flags &
2652                    WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
2653
2654 #ifdef NEED_AP_MLME
2655         for (j = 0; j < hapd_iface->num_bss; j++)
2656                 hostapd_cleanup_cs_params(hapd_iface->bss[j]);
2657 #endif /* NEED_AP_MLME */
2658
2659         /* same as hostapd_interface_deinit without deinitializing ctrl-iface */
2660         for (j = 0; j < hapd_iface->num_bss; j++) {
2661                 struct hostapd_data *hapd = hapd_iface->bss[j];
2662                 hostapd_bss_deinit_no_free(hapd);
2663                 hostapd_free_hapd_data(hapd);
2664         }
2665
2666         hostapd_deinit_driver(driver, drv_priv, hapd_iface);
2667
2668         /* From hostapd_cleanup_iface: These were initialized in
2669          * hostapd_setup_interface and hostapd_setup_interface_complete
2670          */
2671         hostapd_cleanup_iface_partial(hapd_iface);
2672
2673         wpa_printf(MSG_DEBUG, "Interface %s disabled",
2674                    hapd_iface->bss[0]->conf->iface);
2675         hostapd_set_state(hapd_iface, HAPD_IFACE_DISABLED);
2676         return 0;
2677 }
2678
2679
2680 static struct hostapd_iface *
2681 hostapd_iface_alloc(struct hapd_interfaces *interfaces)
2682 {
2683         struct hostapd_iface **iface, *hapd_iface;
2684
2685         iface = os_realloc_array(interfaces->iface, interfaces->count + 1,
2686                                  sizeof(struct hostapd_iface *));
2687         if (iface == NULL)
2688                 return NULL;
2689         interfaces->iface = iface;
2690         hapd_iface = interfaces->iface[interfaces->count] =
2691                 hostapd_alloc_iface();
2692         if (hapd_iface == NULL) {
2693                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
2694                            "the interface", __func__);
2695                 return NULL;
2696         }
2697         interfaces->count++;
2698         hapd_iface->interfaces = interfaces;
2699
2700         return hapd_iface;
2701 }
2702
2703
2704 static struct hostapd_config *
2705 hostapd_config_alloc(struct hapd_interfaces *interfaces, const char *ifname,
2706                      const char *ctrl_iface, const char *driver)
2707 {
2708         struct hostapd_bss_config *bss;
2709         struct hostapd_config *conf;
2710
2711         /* Allocates memory for bss and conf */
2712         conf = hostapd_config_defaults();
2713         if (conf == NULL) {
2714                  wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
2715                                 "configuration", __func__);
2716                  return NULL;
2717         }
2718
2719         if (driver) {
2720                 int j;
2721
2722                 for (j = 0; wpa_drivers[j]; j++) {
2723                         if (os_strcmp(driver, wpa_drivers[j]->name) == 0) {
2724                                 conf->driver = wpa_drivers[j];
2725                                 goto skip;
2726                         }
2727                 }
2728
2729                 wpa_printf(MSG_ERROR,
2730                            "Invalid/unknown driver '%s' - registering the default driver",
2731                            driver);
2732         }
2733
2734         conf->driver = wpa_drivers[0];
2735         if (conf->driver == NULL) {
2736                 wpa_printf(MSG_ERROR, "No driver wrappers registered!");
2737                 hostapd_config_free(conf);
2738                 return NULL;
2739         }
2740
2741 skip:
2742         bss = conf->last_bss = conf->bss[0];
2743
2744         os_strlcpy(bss->iface, ifname, sizeof(bss->iface));
2745         bss->ctrl_interface = os_strdup(ctrl_iface);
2746         if (bss->ctrl_interface == NULL) {
2747                 hostapd_config_free(conf);
2748                 return NULL;
2749         }
2750
2751         /* Reading configuration file skipped, will be done in SET!
2752          * From reading the configuration till the end has to be done in
2753          * SET
2754          */
2755         return conf;
2756 }
2757
2758
2759 static int hostapd_data_alloc(struct hostapd_iface *hapd_iface,
2760                               struct hostapd_config *conf)
2761 {
2762         size_t i;
2763         struct hostapd_data *hapd;
2764
2765         hapd_iface->bss = os_calloc(conf->num_bss,
2766                                     sizeof(struct hostapd_data *));
2767         if (hapd_iface->bss == NULL)
2768                 return -1;
2769
2770         for (i = 0; i < conf->num_bss; i++) {
2771                 hapd = hapd_iface->bss[i] =
2772                         hostapd_alloc_bss_data(hapd_iface, conf, conf->bss[i]);
2773                 if (hapd == NULL) {
2774                         while (i > 0) {
2775                                 i--;
2776                                 os_free(hapd_iface->bss[i]);
2777                                 hapd_iface->bss[i] = NULL;
2778                         }
2779                         os_free(hapd_iface->bss);
2780                         hapd_iface->bss = NULL;
2781                         return -1;
2782                 }
2783                 hapd->msg_ctx = hapd;
2784         }
2785
2786         hapd_iface->conf = conf;
2787         hapd_iface->num_bss = conf->num_bss;
2788
2789         return 0;
2790 }
2791
2792
2793 int hostapd_add_iface(struct hapd_interfaces *interfaces, char *buf)
2794 {
2795         struct hostapd_config *conf = NULL;
2796         struct hostapd_iface *hapd_iface = NULL, *new_iface = NULL;
2797         struct hostapd_data *hapd;
2798         char *ptr;
2799         size_t i, j;
2800         const char *conf_file = NULL, *phy_name = NULL;
2801
2802         if (os_strncmp(buf, "bss_config=", 11) == 0) {
2803                 char *pos;
2804                 phy_name = buf + 11;
2805                 pos = os_strchr(phy_name, ':');
2806                 if (!pos)
2807                         return -1;
2808                 *pos++ = '\0';
2809                 conf_file = pos;
2810                 if (!os_strlen(conf_file))
2811                         return -1;
2812
2813                 hapd_iface = hostapd_interface_init_bss(interfaces, phy_name,
2814                                                         conf_file, 0);
2815                 if (!hapd_iface)
2816                         return -1;
2817                 for (j = 0; j < interfaces->count; j++) {
2818                         if (interfaces->iface[j] == hapd_iface)
2819                                 break;
2820                 }
2821                 if (j == interfaces->count) {
2822                         struct hostapd_iface **tmp;
2823                         tmp = os_realloc_array(interfaces->iface,
2824                                                interfaces->count + 1,
2825                                                sizeof(struct hostapd_iface *));
2826                         if (!tmp) {
2827                                 hostapd_interface_deinit_free(hapd_iface);
2828                                 return -1;
2829                         }
2830                         interfaces->iface = tmp;
2831                         interfaces->iface[interfaces->count++] = hapd_iface;
2832                         new_iface = hapd_iface;
2833                 }
2834
2835                 if (new_iface) {
2836                         if (interfaces->driver_init(hapd_iface))
2837                                 goto fail;
2838
2839                         if (hostapd_setup_interface(hapd_iface)) {
2840                                 hostapd_deinit_driver(
2841                                         hapd_iface->bss[0]->driver,
2842                                         hapd_iface->bss[0]->drv_priv,
2843                                         hapd_iface);
2844                                 goto fail;
2845                         }
2846                 } else {
2847                         /* Assign new BSS with bss[0]'s driver info */
2848                         hapd = hapd_iface->bss[hapd_iface->num_bss - 1];
2849                         hapd->driver = hapd_iface->bss[0]->driver;
2850                         hapd->drv_priv = hapd_iface->bss[0]->drv_priv;
2851                         os_memcpy(hapd->own_addr, hapd_iface->bss[0]->own_addr,
2852                                   ETH_ALEN);
2853
2854                         if (start_ctrl_iface_bss(hapd) < 0 ||
2855                             (hapd_iface->state == HAPD_IFACE_ENABLED &&
2856                              hostapd_setup_bss(hapd, -1))) {
2857                                 hostapd_cleanup(hapd);
2858                                 hapd_iface->bss[hapd_iface->num_bss - 1] = NULL;
2859                                 hapd_iface->conf->num_bss--;
2860                                 hapd_iface->num_bss--;
2861                                 wpa_printf(MSG_DEBUG, "%s: free hapd %p %s",
2862                                            __func__, hapd, hapd->conf->iface);
2863                                 hostapd_config_free_bss(hapd->conf);
2864                                 hapd->conf = NULL;
2865                                 os_free(hapd);
2866                                 return -1;
2867                         }
2868                 }
2869                 hostapd_owe_update_trans(hapd_iface);
2870                 return 0;
2871         }
2872
2873         ptr = os_strchr(buf, ' ');
2874         if (ptr == NULL)
2875                 return -1;
2876         *ptr++ = '\0';
2877
2878         if (os_strncmp(ptr, "config=", 7) == 0)
2879                 conf_file = ptr + 7;
2880
2881         for (i = 0; i < interfaces->count; i++) {
2882                 if (!os_strcmp(interfaces->iface[i]->conf->bss[0]->iface,
2883                                buf)) {
2884                         wpa_printf(MSG_INFO, "Cannot add interface - it "
2885                                    "already exists");
2886                         return -1;
2887                 }
2888         }
2889
2890         hapd_iface = hostapd_iface_alloc(interfaces);
2891         if (hapd_iface == NULL) {
2892                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2893                            "for interface", __func__);
2894                 goto fail;
2895         }
2896         new_iface = hapd_iface;
2897
2898         if (conf_file && interfaces->config_read_cb) {
2899                 conf = interfaces->config_read_cb(conf_file);
2900                 if (conf && conf->bss)
2901                         os_strlcpy(conf->bss[0]->iface, buf,
2902                                    sizeof(conf->bss[0]->iface));
2903         } else {
2904                 char *driver = os_strchr(ptr, ' ');
2905
2906                 if (driver)
2907                         *driver++ = '\0';
2908                 conf = hostapd_config_alloc(interfaces, buf, ptr, driver);
2909         }
2910
2911         if (conf == NULL || conf->bss == NULL) {
2912                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2913                            "for configuration", __func__);
2914                 goto fail;
2915         }
2916
2917         if (hostapd_data_alloc(hapd_iface, conf) < 0) {
2918                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2919                            "for hostapd", __func__);
2920                 goto fail;
2921         }
2922         conf = NULL;
2923
2924         if (start_ctrl_iface(hapd_iface) < 0)
2925                 goto fail;
2926
2927         wpa_printf(MSG_INFO, "Add interface '%s'",
2928                    hapd_iface->conf->bss[0]->iface);
2929
2930         return 0;
2931
2932 fail:
2933         if (conf)
2934                 hostapd_config_free(conf);
2935         if (hapd_iface) {
2936                 if (hapd_iface->bss) {
2937                         for (i = 0; i < hapd_iface->num_bss; i++) {
2938                                 hapd = hapd_iface->bss[i];
2939                                 if (!hapd)
2940                                         continue;
2941                                 if (hapd_iface->interfaces &&
2942                                     hapd_iface->interfaces->ctrl_iface_deinit)
2943                                         hapd_iface->interfaces->
2944                                                 ctrl_iface_deinit(hapd);
2945                                 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
2946                                            __func__, hapd_iface->bss[i],
2947                                            hapd->conf->iface);
2948                                 hostapd_cleanup(hapd);
2949                                 os_free(hapd);
2950                                 hapd_iface->bss[i] = NULL;
2951                         }
2952                         os_free(hapd_iface->bss);
2953                         hapd_iface->bss = NULL;
2954                 }
2955                 if (new_iface) {
2956                         interfaces->count--;
2957                         interfaces->iface[interfaces->count] = NULL;
2958                 }
2959                 hostapd_cleanup_iface(hapd_iface);
2960         }
2961         return -1;
2962 }
2963
2964
2965 static int hostapd_remove_bss(struct hostapd_iface *iface, unsigned int idx)
2966 {
2967         size_t i;
2968
2969         wpa_printf(MSG_INFO, "Remove BSS '%s'", iface->conf->bss[idx]->iface);
2970
2971         /* Remove hostapd_data only if it has already been initialized */
2972         if (idx < iface->num_bss) {
2973                 struct hostapd_data *hapd = iface->bss[idx];
2974
2975                 hostapd_bss_deinit(hapd);
2976                 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
2977                            __func__, hapd, hapd->conf->iface);
2978                 hostapd_config_free_bss(hapd->conf);
2979                 hapd->conf = NULL;
2980                 os_free(hapd);
2981
2982                 iface->num_bss--;
2983
2984                 for (i = idx; i < iface->num_bss; i++)
2985                         iface->bss[i] = iface->bss[i + 1];
2986         } else {
2987                 hostapd_config_free_bss(iface->conf->bss[idx]);
2988                 iface->conf->bss[idx] = NULL;
2989         }
2990
2991         iface->conf->num_bss--;
2992         for (i = idx; i < iface->conf->num_bss; i++)
2993                 iface->conf->bss[i] = iface->conf->bss[i + 1];
2994
2995         return 0;
2996 }
2997
2998
2999 int hostapd_remove_iface(struct hapd_interfaces *interfaces, char *buf)
3000 {
3001         struct hostapd_iface *hapd_iface;
3002         size_t i, j, k = 0;
3003
3004         for (i = 0; i < interfaces->count; i++) {
3005                 hapd_iface = interfaces->iface[i];
3006                 if (hapd_iface == NULL)
3007                         return -1;
3008                 if (!os_strcmp(hapd_iface->conf->bss[0]->iface, buf)) {
3009                         wpa_printf(MSG_INFO, "Remove interface '%s'", buf);
3010                         hapd_iface->driver_ap_teardown =
3011                                 !!(hapd_iface->drv_flags &
3012                                    WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
3013
3014                         hostapd_interface_deinit_free(hapd_iface);
3015                         k = i;
3016                         while (k < (interfaces->count - 1)) {
3017                                 interfaces->iface[k] =
3018                                         interfaces->iface[k + 1];
3019                                 k++;
3020                         }
3021                         interfaces->count--;
3022                         return 0;
3023                 }
3024
3025                 for (j = 0; j < hapd_iface->conf->num_bss; j++) {
3026                         if (!os_strcmp(hapd_iface->conf->bss[j]->iface, buf)) {
3027                                 hapd_iface->driver_ap_teardown =
3028                                         !(hapd_iface->drv_flags &
3029                                           WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
3030                                 return hostapd_remove_bss(hapd_iface, j);
3031                         }
3032                 }
3033         }
3034         return -1;
3035 }
3036
3037
3038 /**
3039  * hostapd_new_assoc_sta - Notify that a new station associated with the AP
3040  * @hapd: Pointer to BSS data
3041  * @sta: Pointer to the associated STA data
3042  * @reassoc: 1 to indicate this was a re-association; 0 = first association
3043  *
3044  * This function will be called whenever a station associates with the AP. It
3045  * can be called from ieee802_11.c for drivers that export MLME to hostapd and
3046  * from drv_callbacks.c based on driver events for drivers that take care of
3047  * management frames (IEEE 802.11 authentication and association) internally.
3048  */
3049 void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
3050                            int reassoc)
3051 {
3052         if (hapd->tkip_countermeasures) {
3053                 hostapd_drv_sta_deauth(hapd, sta->addr,
3054                                        WLAN_REASON_MICHAEL_MIC_FAILURE);
3055                 return;
3056         }
3057
3058         hostapd_prune_associations(hapd, sta->addr);
3059         ap_sta_clear_disconnect_timeouts(hapd, sta);
3060
3061         /* IEEE 802.11F (IAPP) */
3062         if (hapd->conf->ieee802_11f)
3063                 iapp_new_station(hapd->iapp, sta);
3064
3065 #ifdef CONFIG_P2P
3066         if (sta->p2p_ie == NULL && !sta->no_p2p_set) {
3067                 sta->no_p2p_set = 1;
3068                 hapd->num_sta_no_p2p++;
3069                 if (hapd->num_sta_no_p2p == 1)
3070                         hostapd_p2p_non_p2p_sta_connected(hapd);
3071         }
3072 #endif /* CONFIG_P2P */
3073
3074         airtime_policy_new_sta(hapd, sta);
3075
3076         /* Start accounting here, if IEEE 802.1X and WPA are not used.
3077          * IEEE 802.1X/WPA code will start accounting after the station has
3078          * been authorized. */
3079         if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen) {
3080                 ap_sta_set_authorized(hapd, sta, 1);
3081                 os_get_reltime(&sta->connected_time);
3082                 accounting_sta_start(hapd, sta);
3083         }
3084
3085         /* Start IEEE 802.1X authentication process for new stations */
3086         ieee802_1x_new_station(hapd, sta);
3087         if (reassoc) {
3088                 if (sta->auth_alg != WLAN_AUTH_FT &&
3089                     sta->auth_alg != WLAN_AUTH_FILS_SK &&
3090                     sta->auth_alg != WLAN_AUTH_FILS_SK_PFS &&
3091                     sta->auth_alg != WLAN_AUTH_FILS_PK &&
3092                     !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)))
3093                         wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH);
3094         } else
3095                 wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm);
3096
3097         if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED) {
3098                 if (eloop_cancel_timeout(ap_handle_timer, hapd, sta) > 0) {
3099                         wpa_printf(MSG_DEBUG,
3100                                    "%s: %s: canceled wired ap_handle_timer timeout for "
3101                                    MACSTR,
3102                                    hapd->conf->iface, __func__,
3103                                    MAC2STR(sta->addr));
3104                 }
3105         } else if (!(hapd->iface->drv_flags &
3106                      WPA_DRIVER_FLAGS_INACTIVITY_TIMER)) {
3107                 wpa_printf(MSG_DEBUG,
3108                            "%s: %s: reschedule ap_handle_timer timeout for "
3109                            MACSTR " (%d seconds - ap_max_inactivity)",
3110                            hapd->conf->iface, __func__, MAC2STR(sta->addr),
3111                            hapd->conf->ap_max_inactivity);
3112                 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
3113                 eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
3114                                        ap_handle_timer, hapd, sta);
3115         }
3116
3117 #ifdef CONFIG_MACSEC
3118         if (hapd->conf->wpa_key_mgmt == WPA_KEY_MGMT_NONE &&
3119             hapd->conf->mka_psk_set)
3120                 ieee802_1x_create_preshared_mka_hapd(hapd, sta);
3121         else
3122                 ieee802_1x_alloc_kay_sm_hapd(hapd, sta);
3123 #endif /* CONFIG_MACSEC */
3124 }
3125
3126
3127 const char * hostapd_state_text(enum hostapd_iface_state s)
3128 {
3129         switch (s) {
3130         case HAPD_IFACE_UNINITIALIZED:
3131                 return "UNINITIALIZED";
3132         case HAPD_IFACE_DISABLED:
3133                 return "DISABLED";
3134         case HAPD_IFACE_COUNTRY_UPDATE:
3135                 return "COUNTRY_UPDATE";
3136         case HAPD_IFACE_ACS:
3137                 return "ACS";
3138         case HAPD_IFACE_HT_SCAN:
3139                 return "HT_SCAN";
3140         case HAPD_IFACE_DFS:
3141                 return "DFS";
3142         case HAPD_IFACE_ENABLED:
3143                 return "ENABLED";
3144         }
3145
3146         return "UNKNOWN";
3147 }
3148
3149
3150 void hostapd_set_state(struct hostapd_iface *iface, enum hostapd_iface_state s)
3151 {
3152         wpa_printf(MSG_INFO, "%s: interface state %s->%s",
3153                    iface->conf ? iface->conf->bss[0]->iface : "N/A",
3154                    hostapd_state_text(iface->state), hostapd_state_text(s));
3155         iface->state = s;
3156 }
3157
3158
3159 int hostapd_csa_in_progress(struct hostapd_iface *iface)
3160 {
3161         unsigned int i;
3162
3163         for (i = 0; i < iface->num_bss; i++)
3164                 if (iface->bss[i]->csa_in_progress)
3165                         return 1;
3166         return 0;
3167 }
3168
3169
3170 #ifdef NEED_AP_MLME
3171
3172 static void free_beacon_data(struct beacon_data *beacon)
3173 {
3174         os_free(beacon->head);
3175         beacon->head = NULL;
3176         os_free(beacon->tail);
3177         beacon->tail = NULL;
3178         os_free(beacon->probe_resp);
3179         beacon->probe_resp = NULL;
3180         os_free(beacon->beacon_ies);
3181         beacon->beacon_ies = NULL;
3182         os_free(beacon->proberesp_ies);
3183         beacon->proberesp_ies = NULL;
3184         os_free(beacon->assocresp_ies);
3185         beacon->assocresp_ies = NULL;
3186 }
3187
3188
3189 static int hostapd_build_beacon_data(struct hostapd_data *hapd,
3190                                      struct beacon_data *beacon)
3191 {
3192         struct wpabuf *beacon_extra, *proberesp_extra, *assocresp_extra;
3193         struct wpa_driver_ap_params params;
3194         int ret;
3195
3196         os_memset(beacon, 0, sizeof(*beacon));
3197         ret = ieee802_11_build_ap_params(hapd, &params);
3198         if (ret < 0)
3199                 return ret;
3200
3201         ret = hostapd_build_ap_extra_ies(hapd, &beacon_extra,
3202                                          &proberesp_extra,
3203                                          &assocresp_extra);
3204         if (ret)
3205                 goto free_ap_params;
3206
3207         ret = -1;
3208         beacon->head = os_memdup(params.head, params.head_len);
3209         if (!beacon->head)
3210                 goto free_ap_extra_ies;
3211
3212         beacon->head_len = params.head_len;
3213
3214         beacon->tail = os_memdup(params.tail, params.tail_len);
3215         if (!beacon->tail)
3216                 goto free_beacon;
3217
3218         beacon->tail_len = params.tail_len;
3219
3220         if (params.proberesp != NULL) {
3221                 beacon->probe_resp = os_memdup(params.proberesp,
3222                                                params.proberesp_len);
3223                 if (!beacon->probe_resp)
3224                         goto free_beacon;
3225
3226                 beacon->probe_resp_len = params.proberesp_len;
3227         }
3228
3229         /* copy the extra ies */
3230         if (beacon_extra) {
3231                 beacon->beacon_ies = os_memdup(beacon_extra->buf,
3232                                                wpabuf_len(beacon_extra));
3233                 if (!beacon->beacon_ies)
3234                         goto free_beacon;
3235
3236                 beacon->beacon_ies_len = wpabuf_len(beacon_extra);
3237         }
3238
3239         if (proberesp_extra) {
3240                 beacon->proberesp_ies = os_memdup(proberesp_extra->buf,
3241                                                   wpabuf_len(proberesp_extra));
3242                 if (!beacon->proberesp_ies)
3243                         goto free_beacon;
3244
3245                 beacon->proberesp_ies_len = wpabuf_len(proberesp_extra);
3246         }
3247
3248         if (assocresp_extra) {
3249                 beacon->assocresp_ies = os_memdup(assocresp_extra->buf,
3250                                                   wpabuf_len(assocresp_extra));
3251                 if (!beacon->assocresp_ies)
3252                         goto free_beacon;
3253
3254                 beacon->assocresp_ies_len = wpabuf_len(assocresp_extra);
3255         }
3256
3257         ret = 0;
3258 free_beacon:
3259         /* if the function fails, the caller should not free beacon data */
3260         if (ret)
3261                 free_beacon_data(beacon);
3262
3263 free_ap_extra_ies:
3264         hostapd_free_ap_extra_ies(hapd, beacon_extra, proberesp_extra,
3265                                   assocresp_extra);
3266 free_ap_params:
3267         ieee802_11_free_ap_params(&params);
3268         return ret;
3269 }
3270
3271
3272 /*
3273  * TODO: This flow currently supports only changing channel and width within
3274  * the same hw_mode. Any other changes to MAC parameters or provided settings
3275  * are not supported.
3276  */
3277 static int hostapd_change_config_freq(struct hostapd_data *hapd,
3278                                       struct hostapd_config *conf,
3279                                       struct hostapd_freq_params *params,
3280                                       struct hostapd_freq_params *old_params)
3281 {
3282         int channel;
3283         u8 seg0, seg1;
3284         struct hostapd_hw_modes *mode;
3285
3286         if (!params->channel) {
3287                 /* check if the new channel is supported by hw */
3288                 params->channel = hostapd_hw_get_channel(hapd, params->freq);
3289         }
3290
3291         channel = params->channel;
3292         if (!channel)
3293                 return -1;
3294
3295         mode = hapd->iface->current_mode;
3296
3297         /* if a pointer to old_params is provided we save previous state */
3298         if (old_params &&
3299             hostapd_set_freq_params(old_params, conf->hw_mode,
3300                                     hostapd_hw_get_freq(hapd, conf->channel),
3301                                     conf->channel, conf->ieee80211n,
3302                                     conf->ieee80211ac, conf->ieee80211ax,
3303                                     conf->secondary_channel,
3304                                     hostapd_get_oper_chwidth(conf),
3305                                     hostapd_get_oper_centr_freq_seg0_idx(conf),
3306                                     hostapd_get_oper_centr_freq_seg1_idx(conf),
3307                                     conf->vht_capab,
3308                                     mode ? &mode->he_capab[IEEE80211_MODE_AP] :
3309                                     NULL))
3310                 return -1;
3311
3312         switch (params->bandwidth) {
3313         case 0:
3314         case 20:
3315         case 40:
3316                 hostapd_set_oper_chwidth(conf, CHANWIDTH_USE_HT);
3317                 break;
3318         case 80:
3319                 if (params->center_freq2)
3320                         hostapd_set_oper_chwidth(conf, CHANWIDTH_80P80MHZ);
3321                 else
3322                         hostapd_set_oper_chwidth(conf, CHANWIDTH_80MHZ);
3323                 break;
3324         case 160:
3325                 hostapd_set_oper_chwidth(conf, CHANWIDTH_160MHZ);
3326                 break;
3327         default:
3328                 return -1;
3329         }
3330
3331         conf->channel = channel;
3332         conf->ieee80211n = params->ht_enabled;
3333         conf->secondary_channel = params->sec_channel_offset;
3334         ieee80211_freq_to_chan(params->center_freq1,
3335                                &seg0);
3336         ieee80211_freq_to_chan(params->center_freq2,
3337                                &seg1);
3338         hostapd_set_oper_centr_freq_seg0_idx(conf, seg0);
3339         hostapd_set_oper_centr_freq_seg1_idx(conf, seg1);
3340
3341         /* TODO: maybe call here hostapd_config_check here? */
3342
3343         return 0;
3344 }
3345
3346
3347 static int hostapd_fill_csa_settings(struct hostapd_data *hapd,
3348                                      struct csa_settings *settings)
3349 {
3350         struct hostapd_iface *iface = hapd->iface;
3351         struct hostapd_freq_params old_freq;
3352         int ret;
3353         u8 chan, bandwidth;
3354
3355         os_memset(&old_freq, 0, sizeof(old_freq));
3356         if (!iface || !iface->freq || hapd->csa_in_progress)
3357                 return -1;
3358
3359         switch (settings->freq_params.bandwidth) {
3360         case 80:
3361                 if (settings->freq_params.center_freq2)
3362                         bandwidth = CHANWIDTH_80P80MHZ;
3363                 else
3364                         bandwidth = CHANWIDTH_80MHZ;
3365                 break;
3366         case 160:
3367                 bandwidth = CHANWIDTH_160MHZ;
3368                 break;
3369         default:
3370                 bandwidth = CHANWIDTH_USE_HT;
3371                 break;
3372         }
3373
3374         if (ieee80211_freq_to_channel_ext(
3375                     settings->freq_params.freq,
3376                     settings->freq_params.sec_channel_offset,
3377                     bandwidth,
3378                     &hapd->iface->cs_oper_class,
3379                     &chan) == NUM_HOSTAPD_MODES) {
3380                 wpa_printf(MSG_DEBUG,
3381                            "invalid frequency for channel switch (freq=%d, sec_channel_offset=%d, vht_enabled=%d, he_enabled=%d)",
3382                            settings->freq_params.freq,
3383                            settings->freq_params.sec_channel_offset,
3384                            settings->freq_params.vht_enabled,
3385                            settings->freq_params.he_enabled);
3386                 return -1;
3387         }
3388
3389         settings->freq_params.channel = chan;
3390
3391         ret = hostapd_change_config_freq(iface->bss[0], iface->conf,
3392                                          &settings->freq_params,
3393                                          &old_freq);
3394         if (ret)
3395                 return ret;
3396
3397         ret = hostapd_build_beacon_data(hapd, &settings->beacon_after);
3398
3399         /* change back the configuration */
3400         hostapd_change_config_freq(iface->bss[0], iface->conf,
3401                                    &old_freq, NULL);
3402
3403         if (ret)
3404                 return ret;
3405
3406         /* set channel switch parameters for csa ie */
3407         hapd->cs_freq_params = settings->freq_params;
3408         hapd->cs_count = settings->cs_count;
3409         hapd->cs_block_tx = settings->block_tx;
3410
3411         ret = hostapd_build_beacon_data(hapd, &settings->beacon_csa);
3412         if (ret) {
3413                 free_beacon_data(&settings->beacon_after);
3414                 return ret;
3415         }
3416
3417         settings->counter_offset_beacon[0] = hapd->cs_c_off_beacon;
3418         settings->counter_offset_presp[0] = hapd->cs_c_off_proberesp;
3419         settings->counter_offset_beacon[1] = hapd->cs_c_off_ecsa_beacon;
3420         settings->counter_offset_presp[1] = hapd->cs_c_off_ecsa_proberesp;
3421
3422         return 0;
3423 }
3424
3425
3426 void hostapd_cleanup_cs_params(struct hostapd_data *hapd)
3427 {
3428         os_memset(&hapd->cs_freq_params, 0, sizeof(hapd->cs_freq_params));
3429         hapd->cs_count = 0;
3430         hapd->cs_block_tx = 0;
3431         hapd->cs_c_off_beacon = 0;
3432         hapd->cs_c_off_proberesp = 0;
3433         hapd->csa_in_progress = 0;
3434         hapd->cs_c_off_ecsa_beacon = 0;
3435         hapd->cs_c_off_ecsa_proberesp = 0;
3436 }
3437
3438
3439 void hostapd_chan_switch_vht_config(struct hostapd_data *hapd, int vht_enabled)
3440 {
3441         if (vht_enabled)
3442                 hapd->iconf->ch_switch_vht_config |= CH_SWITCH_VHT_ENABLED;
3443         else
3444                 hapd->iconf->ch_switch_vht_config |= CH_SWITCH_VHT_DISABLED;
3445
3446         hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
3447                        HOSTAPD_LEVEL_INFO, "CHAN_SWITCH VHT CONFIG 0x%x",
3448                        hapd->iconf->ch_switch_vht_config);
3449 }
3450
3451
3452 int hostapd_switch_channel(struct hostapd_data *hapd,
3453                            struct csa_settings *settings)
3454 {
3455         int ret;
3456
3457         if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
3458                 wpa_printf(MSG_INFO, "CSA is not supported");
3459                 return -1;
3460         }
3461
3462         ret = hostapd_fill_csa_settings(hapd, settings);
3463         if (ret)
3464                 return ret;
3465
3466         ret = hostapd_drv_switch_channel(hapd, settings);
3467         free_beacon_data(&settings->beacon_csa);
3468         free_beacon_data(&settings->beacon_after);
3469
3470         if (ret) {
3471                 /* if we failed, clean cs parameters */
3472                 hostapd_cleanup_cs_params(hapd);
3473                 return ret;
3474         }
3475
3476         hapd->csa_in_progress = 1;
3477         return 0;
3478 }
3479
3480
3481 void
3482 hostapd_switch_channel_fallback(struct hostapd_iface *iface,
3483                                 const struct hostapd_freq_params *freq_params)
3484 {
3485         int seg0_idx = 0, seg1_idx = 0, bw = CHANWIDTH_USE_HT;
3486
3487         wpa_printf(MSG_DEBUG, "Restarting all CSA-related BSSes");
3488
3489         if (freq_params->center_freq1)
3490                 seg0_idx = 36 + (freq_params->center_freq1 - 5180) / 5;
3491         if (freq_params->center_freq2)
3492                 seg1_idx = 36 + (freq_params->center_freq2 - 5180) / 5;
3493
3494         switch (freq_params->bandwidth) {
3495         case 0:
3496         case 20:
3497         case 40:
3498                 bw = CHANWIDTH_USE_HT;
3499                 break;
3500         case 80:
3501                 if (freq_params->center_freq2)
3502                         bw = CHANWIDTH_80P80MHZ;
3503                 else
3504                         bw = CHANWIDTH_80MHZ;
3505                 break;
3506         case 160:
3507                 bw = CHANWIDTH_160MHZ;
3508                 break;
3509         default:
3510                 wpa_printf(MSG_WARNING, "Unknown CSA bandwidth: %d",
3511                            freq_params->bandwidth);
3512                 break;
3513         }
3514
3515         iface->freq = freq_params->freq;
3516         iface->conf->channel = freq_params->channel;
3517         iface->conf->secondary_channel = freq_params->sec_channel_offset;
3518         hostapd_set_oper_centr_freq_seg0_idx(iface->conf, seg0_idx);
3519         hostapd_set_oper_centr_freq_seg1_idx(iface->conf, seg1_idx);
3520         hostapd_set_oper_chwidth(iface->conf, bw);
3521         iface->conf->ieee80211n = freq_params->ht_enabled;
3522         iface->conf->ieee80211ac = freq_params->vht_enabled;
3523         iface->conf->ieee80211ax = freq_params->he_enabled;
3524
3525         /*
3526          * cs_params must not be cleared earlier because the freq_params
3527          * argument may actually point to one of these.
3528          * These params will be cleared during interface disable below.
3529          */
3530         hostapd_disable_iface(iface);
3531         hostapd_enable_iface(iface);
3532 }
3533
3534 #endif /* NEED_AP_MLME */
3535
3536
3537 struct hostapd_data * hostapd_get_iface(struct hapd_interfaces *interfaces,
3538                                         const char *ifname)
3539 {
3540         size_t i, j;
3541
3542         for (i = 0; i < interfaces->count; i++) {
3543                 struct hostapd_iface *iface = interfaces->iface[i];
3544
3545                 for (j = 0; j < iface->num_bss; j++) {
3546                         struct hostapd_data *hapd = iface->bss[j];
3547
3548                         if (os_strcmp(ifname, hapd->conf->iface) == 0)
3549                                 return hapd;
3550                 }
3551         }
3552
3553         return NULL;
3554 }
3555
3556
3557 void hostapd_periodic_iface(struct hostapd_iface *iface)
3558 {
3559         size_t i;
3560
3561         ap_list_timer(iface);
3562
3563         for (i = 0; i < iface->num_bss; i++) {
3564                 struct hostapd_data *hapd = iface->bss[i];
3565
3566                 if (!hapd->started)
3567                         continue;
3568
3569 #ifndef CONFIG_NO_RADIUS
3570                 hostapd_acl_expire(hapd);
3571 #endif /* CONFIG_NO_RADIUS */
3572         }
3573 }