src/ap/hostapd.c

   1 /*
   2  * hostapd / Initialization and configuration
   3  * Copyright (c) 2002-2013, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "utils/includes.h"
  10
  11 #include "utils/common.h"
  12 #include "utils/eloop.h"
  13 #include "common/ieee802_11_defs.h"
  14 #include "common/wpa_ctrl.h"
  15 #include "radius/radius_client.h"
  16 #include "radius/radius_das.h"
  17 #include "drivers/driver.h"
  18 #include "hostapd.h"
  19 #include "authsrv.h"
  20 #include "sta_info.h"
  21 #include "accounting.h"
  22 #include "ap_list.h"
  23 #include "beacon.h"
  24 #include "iapp.h"
  25 #include "ieee802_1x.h"
  26 #include "ieee802_11_auth.h"
  27 #include "vlan_init.h"
  28 #include "wpa_auth.h"
  29 #include "wps_hostapd.h"
  30 #include "hw_features.h"
  31 #include "wpa_auth_glue.h"
  32 #include "ap_drv_ops.h"
  33 #include "ap_config.h"
  34 #include "p2p_hostapd.h"
  35 #include "gas_serv.h"
  36 #include "dfs.h"
  37
  38
  39 static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason);
  40 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd);
  41 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd);
  42 static int setup_interface2(struct hostapd_iface *iface);
  43 static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx);
  44
  45 extern int wpa_debug_level;
  46 extern struct wpa_driver_ops *wpa_drivers[];
  47
  48
  49 int hostapd_for_each_interface(struct hapd_interfaces *interfaces,
  50                                int (*cb)(struct hostapd_iface *iface,
  51                                          void *ctx), void *ctx)
  52 {
  53         size_t i;
  54         int ret;
  55
  56         for (i = 0; i < interfaces->count; i++) {
  57                 ret = cb(interfaces->iface[i], ctx);
  58                 if (ret)
  59                         return ret;
  60         }
  61
  62         return 0;
  63 }
  64
  65
  66 static void hostapd_reload_bss(struct hostapd_data *hapd)
  67 {
  68         struct hostapd_ssid *ssid;
  69
  70 #ifndef CONFIG_NO_RADIUS
  71         radius_client_reconfig(hapd->radius, hapd->conf->radius);
  72 #endif /* CONFIG_NO_RADIUS */
  73
  74         ssid = &hapd->conf->ssid;
  75         if (!ssid->wpa_psk_set && ssid->wpa_psk && !ssid->wpa_psk->next &&
  76             ssid->wpa_passphrase_set && ssid->wpa_passphrase) {
  77                 /*
  78                  * Force PSK to be derived again since SSID or passphrase may
  79                  * have changed.
  80                  */
  81                 os_free(ssid->wpa_psk);
  82                 ssid->wpa_psk = NULL;
  83         }
  84         if (hostapd_setup_wpa_psk(hapd->conf)) {
  85                 wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
  86                            "after reloading configuration");
  87         }
  88
  89         if (hapd->conf->ieee802_1x || hapd->conf->wpa)
  90                 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1);
  91         else
  92                 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
  93
  94         if (hapd->conf->wpa && hapd->wpa_auth == NULL) {
  95                 hostapd_setup_wpa(hapd);
  96                 if (hapd->wpa_auth)
  97                         wpa_init_keys(hapd->wpa_auth);
  98         } else if (hapd->conf->wpa) {
  99                 const u8 *wpa_ie;
 100                 size_t wpa_ie_len;
 101                 hostapd_reconfig_wpa(hapd);
 102                 wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
 103                 if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len))
 104                         wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
 105                                    "the kernel driver.");
 106         } else if (hapd->wpa_auth) {
 107                 wpa_deinit(hapd->wpa_auth);
 108                 hapd->wpa_auth = NULL;
 109                 hostapd_set_privacy(hapd, 0);
 110                 hostapd_setup_encryption(hapd->conf->iface, hapd);
 111                 hostapd_set_generic_elem(hapd, (u8 *) "", 0);
 112         }
 113
 114         ieee802_11_set_beacon(hapd);
 115         hostapd_update_wps(hapd);
 116
 117         if (hapd->conf->ssid.ssid_set &&
 118             hostapd_set_ssid(hapd, hapd->conf->ssid.ssid,
 119                              hapd->conf->ssid.ssid_len)) {
 120                 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
 121                 /* try to continue */
 122         }
 123         wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface);
 124 }
 125
 126
 127 static void hostapd_clear_old(struct hostapd_iface *iface)
 128 {
 129         size_t j;
 130
 131         /*
 132          * Deauthenticate all stations since the new configuration may not
 133          * allow them to use the BSS anymore.
 134          */
 135         for (j = 0; j < iface->num_bss; j++) {
 136                 hostapd_flush_old_stations(iface->bss[j],
 137                                            WLAN_REASON_PREV_AUTH_NOT_VALID);
 138                 hostapd_broadcast_wep_clear(iface->bss[j]);
 139
 140 #ifndef CONFIG_NO_RADIUS
 141                 /* TODO: update dynamic data based on changed configuration
 142                  * items (e.g., open/close sockets, etc.) */
 143                 radius_client_flush(iface->bss[j]->radius, 0);
 144 #endif /* CONFIG_NO_RADIUS */
 145         }
 146 }
 147
 148
 149 int hostapd_reload_config(struct hostapd_iface *iface)
 150 {
 151         struct hostapd_data *hapd = iface->bss[0];
 152         struct hostapd_config *newconf, *oldconf;
 153         size_t j;
 154
 155         if (iface->config_fname == NULL) {
 156                 /* Only in-memory config in use - assume it has been updated */
 157                 hostapd_clear_old(iface);
 158                 for (j = 0; j < iface->num_bss; j++)
 159                         hostapd_reload_bss(iface->bss[j]);
 160                 return 0;
 161         }
 162
 163         if (iface->interfaces == NULL ||
 164             iface->interfaces->config_read_cb == NULL)
 165                 return -1;
 166         newconf = iface->interfaces->config_read_cb(iface->config_fname);
 167         if (newconf == NULL)
 168                 return -1;
 169
 170         hostapd_clear_old(iface);
 171
 172         oldconf = hapd->iconf;
 173         iface->conf = newconf;
 174
 175         for (j = 0; j < iface->num_bss; j++) {
 176                 hapd = iface->bss[j];
 177                 hapd->iconf = newconf;
 178                 hapd->conf = newconf->bss[j];
 179                 hostapd_reload_bss(hapd);
 180         }
 181
 182         hostapd_config_free(oldconf);
 183
 184
 185         return 0;
 186 }
 187
 188
 189 static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd,
 190                                               char *ifname)
 191 {
 192         int i;
 193
 194         for (i = 0; i < NUM_WEP_KEYS; i++) {
 195                 if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE, NULL, i,
 196                                         0, NULL, 0, NULL, 0)) {
 197                         wpa_printf(MSG_DEBUG, "Failed to clear default "
 198                                    "encryption keys (ifname=%s keyidx=%d)",
 199                                    ifname, i);
 200                 }
 201         }
 202 #ifdef CONFIG_IEEE80211W
 203         if (hapd->conf->ieee80211w) {
 204                 for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) {
 205                         if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE,
 206                                                 NULL, i, 0, NULL,
 207                                                 0, NULL, 0)) {
 208                                 wpa_printf(MSG_DEBUG, "Failed to clear "
 209                                            "default mgmt encryption keys "
 210                                            "(ifname=%s keyidx=%d)", ifname, i);
 211                         }
 212                 }
 213         }
 214 #endif /* CONFIG_IEEE80211W */
 215 }
 216
 217
 218 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd)
 219 {
 220         hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface);
 221         return 0;
 222 }
 223
 224
 225 static int hostapd_broadcast_wep_set(struct hostapd_data *hapd)
 226 {
 227         int errors = 0, idx;
 228         struct hostapd_ssid *ssid = &hapd->conf->ssid;
 229
 230         idx = ssid->wep.idx;
 231         if (ssid->wep.default_len &&
 232             hostapd_drv_set_key(hapd->conf->iface,
 233                                 hapd, WPA_ALG_WEP, broadcast_ether_addr, idx,
 234                                 1, NULL, 0, ssid->wep.key[idx],
 235                                 ssid->wep.len[idx])) {
 236                 wpa_printf(MSG_WARNING, "Could not set WEP encryption.");
 237                 errors++;
 238         }
 239
 240         return errors;
 241 }
 242
 243
 244 static void hostapd_free_hapd_data(struct hostapd_data *hapd)
 245 {
 246         wpa_printf(MSG_DEBUG, "%s(%s)", __func__, hapd->conf->iface);
 247         iapp_deinit(hapd->iapp);
 248         hapd->iapp = NULL;
 249         accounting_deinit(hapd);
 250         hostapd_deinit_wpa(hapd);
 251         vlan_deinit(hapd);
 252         hostapd_acl_deinit(hapd);
 253 #ifndef CONFIG_NO_RADIUS
 254         radius_client_deinit(hapd->radius);
 255         hapd->radius = NULL;
 256         radius_das_deinit(hapd->radius_das);
 257         hapd->radius_das = NULL;
 258 #endif /* CONFIG_NO_RADIUS */
 259
 260         hostapd_deinit_wps(hapd);
 261
 262         authsrv_deinit(hapd);
 263
 264         if (hapd->interface_added &&
 265             hostapd_if_remove(hapd, WPA_IF_AP_BSS, hapd->conf->iface)) {
 266                 wpa_printf(MSG_WARNING, "Failed to remove BSS interface %s",
 267                            hapd->conf->iface);
 268         }
 269
 270         os_free(hapd->probereq_cb);
 271         hapd->probereq_cb = NULL;
 272
 273 #ifdef CONFIG_P2P
 274         wpabuf_free(hapd->p2p_beacon_ie);
 275         hapd->p2p_beacon_ie = NULL;
 276         wpabuf_free(hapd->p2p_probe_resp_ie);
 277         hapd->p2p_probe_resp_ie = NULL;
 278 #endif /* CONFIG_P2P */
 279
 280         wpabuf_free(hapd->time_adv);
 281
 282 #ifdef CONFIG_INTERWORKING
 283         gas_serv_deinit(hapd);
 284 #endif /* CONFIG_INTERWORKING */
 285
 286 #ifdef CONFIG_SQLITE
 287         os_free(hapd->tmp_eap_user.identity);
 288         os_free(hapd->tmp_eap_user.password);
 289 #endif /* CONFIG_SQLITE */
 290 }
 291
 292
 293 /**
 294  * hostapd_cleanup - Per-BSS cleanup (deinitialization)
 295  * @hapd: Pointer to BSS data
 296  *
 297  * This function is used to free all per-BSS data structures and resources.
 298  * Most of the modules that are initialized in hostapd_setup_bss() are
 299  * deinitialized here.
 300  */
 301 static void hostapd_cleanup(struct hostapd_data *hapd)
 302 {
 303         wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s))", __func__, hapd,
 304                    hapd->conf->iface);
 305         if (hapd->iface->interfaces &&
 306             hapd->iface->interfaces->ctrl_iface_deinit)
 307                 hapd->iface->interfaces->ctrl_iface_deinit(hapd);
 308         hostapd_free_hapd_data(hapd);
 309         hapd->started = 0;
 310 }
 311
 312
 313 static void hostapd_cleanup_iface_partial(struct hostapd_iface *iface)
 314 {
 315         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
 316         hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
 317         iface->hw_features = NULL;
 318         os_free(iface->current_rates);
 319         iface->current_rates = NULL;
 320         os_free(iface->basic_rates);
 321         iface->basic_rates = NULL;
 322         ap_list_deinit(iface);
 323 }
 324
 325
 326 /**
 327  * hostapd_cleanup_iface - Complete per-interface cleanup
 328  * @iface: Pointer to interface data
 329  *
 330  * This function is called after per-BSS data structures are deinitialized
 331  * with hostapd_cleanup().
 332  */
 333 static void hostapd_cleanup_iface(struct hostapd_iface *iface)
 334 {
 335         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
 336         eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
 337
 338         hostapd_cleanup_iface_partial(iface);
 339         hostapd_config_free(iface->conf);
 340         iface->conf = NULL;
 341
 342         os_free(iface->config_fname);
 343         os_free(iface->bss);
 344         wpa_printf(MSG_DEBUG, "%s: free iface=%p", __func__, iface);
 345         os_free(iface);
 346 }
 347
 348
 349 static void hostapd_clear_wep(struct hostapd_data *hapd)
 350 {
 351         if (hapd->drv_priv) {
 352                 hostapd_set_privacy(hapd, 0);
 353                 hostapd_broadcast_wep_clear(hapd);
 354         }
 355 }
 356
 357
 358 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
 359 {
 360         int i;
 361
 362         hostapd_broadcast_wep_set(hapd);
 363
 364         if (hapd->conf->ssid.wep.default_len) {
 365                 hostapd_set_privacy(hapd, 1);
 366                 return 0;
 367         }
 368
 369         /*
 370          * When IEEE 802.1X is not enabled, the driver may need to know how to
 371          * set authentication algorithms for static WEP.
 372          */
 373         hostapd_drv_set_authmode(hapd, hapd->conf->auth_algs);
 374
 375         for (i = 0; i < 4; i++) {
 376                 if (hapd->conf->ssid.wep.key[i] &&
 377                     hostapd_drv_set_key(iface, hapd, WPA_ALG_WEP, NULL, i,
 378                                         i == hapd->conf->ssid.wep.idx, NULL, 0,
 379                                         hapd->conf->ssid.wep.key[i],
 380                                         hapd->conf->ssid.wep.len[i])) {
 381                         wpa_printf(MSG_WARNING, "Could not set WEP "
 382                                    "encryption.");
 383                         return -1;
 384                 }
 385                 if (hapd->conf->ssid.wep.key[i] &&
 386                     i == hapd->conf->ssid.wep.idx)
 387                         hostapd_set_privacy(hapd, 1);
 388         }
 389
 390         return 0;
 391 }
 392
 393
 394 static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason)
 395 {
 396         int ret = 0;
 397         u8 addr[ETH_ALEN];
 398
 399         if (hostapd_drv_none(hapd) || hapd->drv_priv == NULL)
 400                 return 0;
 401
 402         wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "Flushing old station entries");
 403         if (hostapd_flush(hapd)) {
 404                 wpa_msg(hapd->msg_ctx, MSG_WARNING, "Could not connect to "
 405                         "kernel driver");
 406                 ret = -1;
 407         }
 408         wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "Deauthenticate all stations");
 409         os_memset(addr, 0xff, ETH_ALEN);
 410         hostapd_drv_sta_deauth(hapd, addr, reason);
 411         hostapd_free_stas(hapd);
 412
 413         return ret;
 414 }
 415
 416
 417 /**
 418  * hostapd_validate_bssid_configuration - Validate BSSID configuration
 419  * @iface: Pointer to interface data
 420  * Returns: 0 on success, -1 on failure
 421  *
 422  * This function is used to validate that the configured BSSIDs are valid.
 423  */
 424 static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
 425 {
 426         u8 mask[ETH_ALEN] = { 0 };
 427         struct hostapd_data *hapd = iface->bss[0];
 428         unsigned int i = iface->conf->num_bss, bits = 0, j;
 429         int auto_addr = 0;
 430
 431         if (hostapd_drv_none(hapd))
 432                 return 0;
 433
 434         /* Generate BSSID mask that is large enough to cover the BSSIDs. */
 435
 436         /* Determine the bits necessary to cover the number of BSSIDs. */
 437         for (i--; i; i >>= 1)
 438                 bits++;
 439
 440         /* Determine the bits necessary to any configured BSSIDs,
 441            if they are higher than the number of BSSIDs. */
 442         for (j = 0; j < iface->conf->num_bss; j++) {
 443                 if (hostapd_mac_comp_empty(iface->conf->bss[j]->bssid) == 0) {
 444                         if (j)
 445                                 auto_addr++;
 446                         continue;
 447                 }
 448
 449                 for (i = 0; i < ETH_ALEN; i++) {
 450                         mask[i] |=
 451                                 iface->conf->bss[j]->bssid[i] ^
 452                                 hapd->own_addr[i];
 453                 }
 454         }
 455
 456         if (!auto_addr)
 457                 goto skip_mask_ext;
 458
 459         for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
 460                 ;
 461         j = 0;
 462         if (i < ETH_ALEN) {
 463                 j = (5 - i) * 8;
 464
 465                 while (mask[i] != 0) {
 466                         mask[i] >>= 1;
 467                         j++;
 468                 }
 469         }
 470
 471         if (bits < j)
 472                 bits = j;
 473
 474         if (bits > 40) {
 475                 wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)",
 476                            bits);
 477                 return -1;
 478         }
 479
 480         os_memset(mask, 0xff, ETH_ALEN);
 481         j = bits / 8;
 482         for (i = 5; i > 5 - j; i--)
 483                 mask[i] = 0;
 484         j = bits % 8;
 485         while (j--)
 486                 mask[i] <<= 1;
 487
 488 skip_mask_ext:
 489         wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
 490                    (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
 491
 492         if (!auto_addr)
 493                 return 0;
 494
 495         for (i = 0; i < ETH_ALEN; i++) {
 496                 if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
 497                         wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR
 498                                    " for start address " MACSTR ".",
 499                                    MAC2STR(mask), MAC2STR(hapd->own_addr));
 500                         wpa_printf(MSG_ERROR, "Start address must be the "
 501                                    "first address in the block (i.e., addr "
 502                                    "AND mask == addr).");
 503                         return -1;
 504                 }
 505         }
 506
 507         return 0;
 508 }
 509
 510
 511 static int mac_in_conf(struct hostapd_config *conf, const void *a)
 512 {
 513         size_t i;
 514
 515         for (i = 0; i < conf->num_bss; i++) {
 516                 if (hostapd_mac_comp(conf->bss[i]->bssid, a) == 0) {
 517                         return 1;
 518                 }
 519         }
 520
 521         return 0;
 522 }
 523
 524
 525 #ifndef CONFIG_NO_RADIUS
 526
 527 static int hostapd_das_nas_mismatch(struct hostapd_data *hapd,
 528                                     struct radius_das_attrs *attr)
 529 {
 530         /* TODO */
 531         return 0;
 532 }
 533
 534
 535 static struct sta_info * hostapd_das_find_sta(struct hostapd_data *hapd,
 536                                               struct radius_das_attrs *attr)
 537 {
 538         struct sta_info *sta = NULL;
 539         char buf[128];
 540
 541         if (attr->sta_addr)
 542                 sta = ap_get_sta(hapd, attr->sta_addr);
 543
 544         if (sta == NULL && attr->acct_session_id &&
 545             attr->acct_session_id_len == 17) {
 546                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 547                         os_snprintf(buf, sizeof(buf), "%08X-%08X",
 548                                     sta->acct_session_id_hi,
 549                                     sta->acct_session_id_lo);
 550                         if (os_memcmp(attr->acct_session_id, buf, 17) == 0)
 551                                 break;
 552                 }
 553         }
 554
 555         if (sta == NULL && attr->cui) {
 556                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 557                         struct wpabuf *cui;
 558                         cui = ieee802_1x_get_radius_cui(sta->eapol_sm);
 559                         if (cui && wpabuf_len(cui) == attr->cui_len &&
 560                             os_memcmp(wpabuf_head(cui), attr->cui,
 561                                       attr->cui_len) == 0)
 562                                 break;
 563                 }
 564         }
 565
 566         if (sta == NULL && attr->user_name) {
 567                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 568                         u8 *identity;
 569                         size_t identity_len;
 570                         identity = ieee802_1x_get_identity(sta->eapol_sm,
 571                                                            &identity_len);
 572                         if (identity &&
 573                             identity_len == attr->user_name_len &&
 574                             os_memcmp(identity, attr->user_name, identity_len)
 575                             == 0)
 576                                 break;
 577                 }
 578         }
 579
 580         return sta;
 581 }
 582
 583
 584 static enum radius_das_res
 585 hostapd_das_disconnect(void *ctx, struct radius_das_attrs *attr)
 586 {
 587         struct hostapd_data *hapd = ctx;
 588         struct sta_info *sta;
 589
 590         if (hostapd_das_nas_mismatch(hapd, attr))
 591                 return RADIUS_DAS_NAS_MISMATCH;
 592
 593         sta = hostapd_das_find_sta(hapd, attr);
 594         if (sta == NULL)
 595                 return RADIUS_DAS_SESSION_NOT_FOUND;
 596
 597         hostapd_drv_sta_deauth(hapd, sta->addr,
 598                                WLAN_REASON_PREV_AUTH_NOT_VALID);
 599         ap_sta_deauthenticate(hapd, sta, WLAN_REASON_PREV_AUTH_NOT_VALID);
 600
 601         return RADIUS_DAS_SUCCESS;
 602 }
 603
 604 #endif /* CONFIG_NO_RADIUS */
 605
 606
 607 /**
 608  * hostapd_setup_bss - Per-BSS setup (initialization)
 609  * @hapd: Pointer to BSS data
 610  * @first: Whether this BSS is the first BSS of an interface; -1 = not first,
 611  *      but interface may exist
 612  *
 613  * This function is used to initialize all per-BSS data structures and
 614  * resources. This gets called in a loop for each BSS when an interface is
 615  * initialized. Most of the modules that are initialized here will be
 616  * deinitialized in hostapd_cleanup().
 617  */
 618 static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
 619 {
 620         struct hostapd_bss_config *conf = hapd->conf;
 621         u8 ssid[HOSTAPD_MAX_SSID_LEN + 1];
 622         int ssid_len, set_ssid;
 623         char force_ifname[IFNAMSIZ];
 624         u8 if_addr[ETH_ALEN];
 625
 626         wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s), first=%d)",
 627                    __func__, hapd, hapd->conf->iface, first);
 628
 629         if (hapd->started) {
 630                 wpa_printf(MSG_ERROR, "%s: Interface %s was already started",
 631                            __func__, hapd->conf->iface);
 632                 return -1;
 633         }
 634         hapd->started = 1;
 635
 636         if (!first || first == -1) {
 637                 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0) {
 638                         /* Allocate the next available BSSID. */
 639                         do {
 640                                 inc_byte_array(hapd->own_addr, ETH_ALEN);
 641                         } while (mac_in_conf(hapd->iconf, hapd->own_addr));
 642                 } else {
 643                         /* Allocate the configured BSSID. */
 644                         os_memcpy(hapd->own_addr, hapd->conf->bssid, ETH_ALEN);
 645
 646                         if (hostapd_mac_comp(hapd->own_addr,
 647                                              hapd->iface->bss[0]->own_addr) ==
 648                             0) {
 649                                 wpa_printf(MSG_ERROR, "BSS '%s' may not have "
 650                                            "BSSID set to the MAC address of "
 651                                            "the radio", hapd->conf->iface);
 652                                 return -1;
 653                         }
 654                 }
 655
 656                 hapd->interface_added = 1;
 657                 if (hostapd_if_add(hapd->iface->bss[0], WPA_IF_AP_BSS,
 658                                    hapd->conf->iface, hapd->own_addr, hapd,
 659                                    &hapd->drv_priv, force_ifname, if_addr,
 660                                    hapd->conf->bridge[0] ? hapd->conf->bridge :
 661                                    NULL, first == -1)) {
 662                         wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
 663                                    MACSTR ")", MAC2STR(hapd->own_addr));
 664                         return -1;
 665                 }
 666         }
 667
 668         if (conf->wmm_enabled < 0)
 669                 conf->wmm_enabled = hapd->iconf->ieee80211n;
 670
 671         hostapd_flush_old_stations(hapd, WLAN_REASON_PREV_AUTH_NOT_VALID);
 672         hostapd_set_privacy(hapd, 0);
 673
 674         hostapd_broadcast_wep_clear(hapd);
 675         if (hostapd_setup_encryption(hapd->conf->iface, hapd))
 676                 return -1;
 677
 678         /*
 679          * Fetch the SSID from the system and use it or,
 680          * if one was specified in the config file, verify they
 681          * match.
 682          */
 683         ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
 684         if (ssid_len < 0) {
 685                 wpa_printf(MSG_ERROR, "Could not read SSID from system");
 686                 return -1;
 687         }
 688         if (conf->ssid.ssid_set) {
 689                 /*
 690                  * If SSID is specified in the config file and it differs
 691                  * from what is being used then force installation of the
 692                  * new SSID.
 693                  */
 694                 set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
 695                             os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
 696         } else {
 697                 /*
 698                  * No SSID in the config file; just use the one we got
 699                  * from the system.
 700                  */
 701                 set_ssid = 0;
 702                 conf->ssid.ssid_len = ssid_len;
 703                 os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
 704         }
 705
 706         if (!hostapd_drv_none(hapd)) {
 707                 wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR
 708                            " and ssid \"%s\"",
 709                            hapd->conf->iface, MAC2STR(hapd->own_addr),
 710                            wpa_ssid_txt(hapd->conf->ssid.ssid,
 711                                         hapd->conf->ssid.ssid_len));
 712         }
 713
 714         if (hostapd_setup_wpa_psk(conf)) {
 715                 wpa_printf(MSG_ERROR, "WPA-PSK setup failed.");
 716                 return -1;
 717         }
 718
 719         /* Set SSID for the kernel driver (to be used in beacon and probe
 720          * response frames) */
 721         if (set_ssid && hostapd_set_ssid(hapd, conf->ssid.ssid,
 722                                          conf->ssid.ssid_len)) {
 723                 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
 724                 return -1;
 725         }
 726
 727         if (wpa_debug_level == MSG_MSGDUMP)
 728                 conf->radius->msg_dumps = 1;
 729 #ifndef CONFIG_NO_RADIUS
 730         hapd->radius = radius_client_init(hapd, conf->radius);
 731         if (hapd->radius == NULL) {
 732                 wpa_printf(MSG_ERROR, "RADIUS client initialization failed.");
 733                 return -1;
 734         }
 735
 736         if (hapd->conf->radius_das_port) {
 737                 struct radius_das_conf das_conf;
 738                 os_memset(&das_conf, 0, sizeof(das_conf));
 739                 das_conf.port = hapd->conf->radius_das_port;
 740                 das_conf.shared_secret = hapd->conf->radius_das_shared_secret;
 741                 das_conf.shared_secret_len =
 742                         hapd->conf->radius_das_shared_secret_len;
 743                 das_conf.client_addr = &hapd->conf->radius_das_client_addr;
 744                 das_conf.time_window = hapd->conf->radius_das_time_window;
 745                 das_conf.require_event_timestamp =
 746                         hapd->conf->radius_das_require_event_timestamp;
 747                 das_conf.ctx = hapd;
 748                 das_conf.disconnect = hostapd_das_disconnect;
 749                 hapd->radius_das = radius_das_init(&das_conf);
 750                 if (hapd->radius_das == NULL) {
 751                         wpa_printf(MSG_ERROR, "RADIUS DAS initialization "
 752                                    "failed.");
 753                         return -1;
 754                 }
 755         }
 756 #endif /* CONFIG_NO_RADIUS */
 757
 758         if (hostapd_acl_init(hapd)) {
 759                 wpa_printf(MSG_ERROR, "ACL initialization failed.");
 760                 return -1;
 761         }
 762         if (hostapd_init_wps(hapd, conf))
 763                 return -1;
 764
 765         if (authsrv_init(hapd) < 0)
 766                 return -1;
 767
 768         if (ieee802_1x_init(hapd)) {
 769                 wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed.");
 770                 return -1;
 771         }
 772
 773         if (hapd->conf->wpa && hostapd_setup_wpa(hapd))
 774                 return -1;
 775
 776         if (accounting_init(hapd)) {
 777                 wpa_printf(MSG_ERROR, "Accounting initialization failed.");
 778                 return -1;
 779         }
 780
 781         if (hapd->conf->ieee802_11f &&
 782             (hapd->iapp = iapp_init(hapd, hapd->conf->iapp_iface)) == NULL) {
 783                 wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization "
 784                            "failed.");
 785                 return -1;
 786         }
 787
 788 #ifdef CONFIG_INTERWORKING
 789         if (gas_serv_init(hapd)) {
 790                 wpa_printf(MSG_ERROR, "GAS server initialization failed");
 791                 return -1;
 792         }
 793
 794         if (conf->qos_map_set_len &&
 795             hostapd_drv_set_qos_map(hapd, conf->qos_map_set,
 796                                     conf->qos_map_set_len)) {
 797                 wpa_printf(MSG_ERROR, "Failed to initialize QoS Map");
 798                 return -1;
 799         }
 800 #endif /* CONFIG_INTERWORKING */
 801
 802         if (!hostapd_drv_none(hapd) && vlan_init(hapd)) {
 803                 wpa_printf(MSG_ERROR, "VLAN initialization failed.");
 804                 return -1;
 805         }
 806
 807         if (!hapd->conf->start_disabled)
 808                 ieee802_11_set_beacon(hapd);
 809
 810         if (hapd->wpa_auth && wpa_init_keys(hapd->wpa_auth) < 0)
 811                 return -1;
 812
 813         if (hapd->driver && hapd->driver->set_operstate)
 814                 hapd->driver->set_operstate(hapd->drv_priv, 1);
 815
 816         return 0;
 817 }
 818
 819
 820 static void hostapd_tx_queue_params(struct hostapd_iface *iface)
 821 {
 822         struct hostapd_data *hapd = iface->bss[0];
 823         int i;
 824         struct hostapd_tx_queue_params *p;
 825
 826         for (i = 0; i < NUM_TX_QUEUES; i++) {
 827                 p = &iface->conf->tx_queue[i];
 828
 829                 if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin,
 830                                                 p->cwmax, p->burst)) {
 831                         wpa_printf(MSG_DEBUG, "Failed to set TX queue "
 832                                    "parameters for queue %d.", i);
 833                         /* Continue anyway */
 834                 }
 835         }
 836 }
 837
 838
 839 static int hostapd_set_acl_list(struct hostapd_data *hapd,
 840                                 struct mac_acl_entry *mac_acl,
 841                                 int n_entries, u8 accept_acl)
 842 {
 843         struct hostapd_acl_params *acl_params;
 844         int i, err;
 845
 846         acl_params = os_zalloc(sizeof(*acl_params) +
 847                                (n_entries * sizeof(acl_params->mac_acl[0])));
 848         if (!acl_params)
 849                 return -ENOMEM;
 850
 851         for (i = 0; i < n_entries; i++)
 852                 os_memcpy(acl_params->mac_acl[i].addr, mac_acl[i].addr,
 853                           ETH_ALEN);
 854
 855         acl_params->acl_policy = accept_acl;
 856         acl_params->num_mac_acl = n_entries;
 857
 858         err = hostapd_drv_set_acl(hapd, acl_params);
 859
 860         os_free(acl_params);
 861
 862         return err;
 863 }
 864
 865
 866 static void hostapd_set_acl(struct hostapd_data *hapd)
 867 {
 868         struct hostapd_config *conf = hapd->iconf;
 869         int err;
 870         u8 accept_acl;
 871
 872         if (hapd->iface->drv_max_acl_mac_addrs == 0)
 873                 return;
 874         if (!(conf->bss[0]->num_accept_mac || conf->bss[0]->num_deny_mac))
 875                 return;
 876
 877         if (conf->bss[0]->macaddr_acl == DENY_UNLESS_ACCEPTED) {
 878                 if (conf->bss[0]->num_accept_mac) {
 879                         accept_acl = 1;
 880                         err = hostapd_set_acl_list(hapd,
 881                                                    conf->bss[0]->accept_mac,
 882                                                    conf->bss[0]->num_accept_mac,
 883                                                    accept_acl);
 884                         if (err) {
 885                                 wpa_printf(MSG_DEBUG, "Failed to set accept acl");
 886                                 return;
 887                         }
 888                 } else {
 889                         wpa_printf(MSG_DEBUG, "Mismatch between ACL Policy & Accept/deny lists file");
 890                 }
 891         } else if (conf->bss[0]->macaddr_acl == ACCEPT_UNLESS_DENIED) {
 892                 if (conf->bss[0]->num_deny_mac) {
 893                         accept_acl = 0;
 894                         err = hostapd_set_acl_list(hapd, conf->bss[0]->deny_mac,
 895                                                    conf->bss[0]->num_deny_mac,
 896                                                    accept_acl);
 897                         if (err) {
 898                                 wpa_printf(MSG_DEBUG, "Failed to set deny acl");
 899                                 return;
 900                         }
 901                 } else {
 902                         wpa_printf(MSG_DEBUG, "Mismatch between ACL Policy & Accept/deny lists file");
 903                 }
 904         }
 905 }
 906
 907
 908 static int start_ctrl_iface_bss(struct hostapd_data *hapd)
 909 {
 910         if (!hapd->iface->interfaces ||
 911             !hapd->iface->interfaces->ctrl_iface_init)
 912                 return 0;
 913
 914         if (hapd->iface->interfaces->ctrl_iface_init(hapd)) {
 915                 wpa_printf(MSG_ERROR,
 916                            "Failed to setup control interface for %s",
 917                            hapd->conf->iface);
 918                 return -1;
 919         }
 920
 921         return 0;
 922 }
 923
 924
 925 static int start_ctrl_iface(struct hostapd_iface *iface)
 926 {
 927         size_t i;
 928
 929         if (!iface->interfaces || !iface->interfaces->ctrl_iface_init)
 930                 return 0;
 931
 932         for (i = 0; i < iface->num_bss; i++) {
 933                 struct hostapd_data *hapd = iface->bss[i];
 934                 if (iface->interfaces->ctrl_iface_init(hapd)) {
 935                         wpa_printf(MSG_ERROR,
 936                                    "Failed to setup control interface for %s",
 937                                    hapd->conf->iface);
 938                         return -1;
 939                 }
 940         }
 941
 942         return 0;
 943 }
 944
 945
 946 static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx)
 947 {
 948         struct hostapd_iface *iface = eloop_ctx;
 949
 950         if (!iface->wait_channel_update) {
 951                 wpa_printf(MSG_INFO, "Channel list update timeout, but interface was not waiting for it");
 952                 return;
 953         }
 954
 955         /*
 956          * It is possible that the existing channel list is acceptable, so try
 957          * to proceed.
 958          */
 959         wpa_printf(MSG_DEBUG, "Channel list update timeout - try to continue anyway");
 960         setup_interface2(iface);
 961 }
 962
 963
 964 void hostapd_channel_list_updated(struct hostapd_iface *iface)
 965 {
 966         if (!iface->wait_channel_update)
 967                 return;
 968
 969         wpa_printf(MSG_DEBUG, "Channel list updated - continue setup");
 970         eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
 971         setup_interface2(iface);
 972 }
 973
 974
 975 static int setup_interface(struct hostapd_iface *iface)
 976 {
 977         struct hostapd_data *hapd = iface->bss[0];
 978         size_t i;
 979
 980         if (!iface->phy[0]) {
 981                 const char *phy = hostapd_drv_get_radio_name(hapd);
 982                 if (phy) {
 983                         wpa_printf(MSG_DEBUG, "phy: %s", phy);
 984                         os_strlcpy(iface->phy, phy, sizeof(iface->phy));
 985                 }
 986         }
 987
 988         /*
 989          * Make sure that all BSSes get configured with a pointer to the same
 990          * driver interface.
 991          */
 992         for (i = 1; i < iface->num_bss; i++) {
 993                 iface->bss[i]->driver = hapd->driver;
 994                 iface->bss[i]->drv_priv = hapd->drv_priv;
 995         }
 996
 997         if (hostapd_validate_bssid_configuration(iface))
 998                 return -1;
 999
1000         /*
1001          * Initialize control interfaces early to allow external monitoring of
1002          * channel setup operations that may take considerable amount of time
1003          * especially for DFS cases.
1004          */
1005         if (start_ctrl_iface(iface))
1006                 return -1;
1007
1008         if (hapd->iconf->country[0] && hapd->iconf->country[1]) {
1009                 char country[4], previous_country[4];
1010
1011                 hostapd_set_state(iface, HAPD_IFACE_COUNTRY_UPDATE);
1012                 if (hostapd_get_country(hapd, previous_country) < 0)
1013                         previous_country[0] = '\0';
1014
1015                 os_memcpy(country, hapd->iconf->country, 3);
1016                 country[3] = '\0';
1017                 if (hostapd_set_country(hapd, country) < 0) {
1018                         wpa_printf(MSG_ERROR, "Failed to set country code");
1019                         return -1;
1020                 }
1021
1022                 wpa_printf(MSG_DEBUG, "Previous country code %s, new country code %s",
1023                            previous_country, country);
1024
1025                 if (os_strncmp(previous_country, country, 2) != 0) {
1026                         wpa_printf(MSG_DEBUG, "Continue interface setup after channel list update");
1027                         iface->wait_channel_update = 1;
1028                         eloop_register_timeout(1, 0,
1029                                                channel_list_update_timeout,
1030                                                iface, NULL);
1031                         return 0;
1032                 }
1033         }
1034
1035         return setup_interface2(iface);
1036 }
1037
1038
1039 static int setup_interface2(struct hostapd_iface *iface)
1040 {
1041         iface->wait_channel_update = 0;
1042
1043         if (hostapd_get_hw_features(iface)) {
1044                 /* Not all drivers support this yet, so continue without hw
1045                  * feature data. */
1046         } else {
1047                 int ret = hostapd_select_hw_mode(iface);
1048                 if (ret < 0) {
1049                         wpa_printf(MSG_ERROR, "Could not select hw_mode and "
1050                                    "channel. (%d)", ret);
1051                         return -1;
1052                 }
1053                 if (ret == 1) {
1054                         wpa_printf(MSG_DEBUG, "Interface initialization will be completed in a callback (ACS)");
1055                         return 0;
1056                 }
1057                 ret = hostapd_check_ht_capab(iface);
1058                 if (ret < 0)
1059                         return -1;
1060                 if (ret == 1) {
1061                         wpa_printf(MSG_DEBUG, "Interface initialization will "
1062                                    "be completed in a callback");
1063                         return 0;
1064                 }
1065
1066                 if (iface->conf->ieee80211h)
1067                         wpa_printf(MSG_DEBUG, "DFS support is enabled");
1068         }
1069         return hostapd_setup_interface_complete(iface, 0);
1070 }
1071
1072
1073 /**
1074  * hostapd_setup_interface_complete - Complete interface setup
1075  *
1076  * This function is called when previous steps in the interface setup has been
1077  * completed. This can also start operations, e.g., DFS, that will require
1078  * additional processing before interface is ready to be enabled. Such
1079  * operations will call this function from eloop callbacks when finished.
1080  */
1081 int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err)
1082 {
1083         struct hostapd_data *hapd = iface->bss[0];
1084         size_t j;
1085         u8 *prev_addr;
1086
1087         if (err) {
1088                 wpa_printf(MSG_ERROR, "Interface initialization failed");
1089                 hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1090                 if (iface->interfaces && iface->interfaces->terminate_on_error)
1091                         eloop_terminate();
1092                 return -1;
1093         }
1094
1095         wpa_printf(MSG_DEBUG, "Completing interface initialization");
1096         if (iface->conf->channel) {
1097 #ifdef NEED_AP_MLME
1098                 int res;
1099 #endif /* NEED_AP_MLME */
1100
1101                 iface->freq = hostapd_hw_get_freq(hapd, iface->conf->channel);
1102                 wpa_printf(MSG_DEBUG, "Mode: %s  Channel: %d  "
1103                            "Frequency: %d MHz",
1104                            hostapd_hw_mode_txt(iface->conf->hw_mode),
1105                            iface->conf->channel, iface->freq);
1106
1107 #ifdef NEED_AP_MLME
1108                 /* Check DFS */
1109                 res = hostapd_handle_dfs(iface);
1110                 if (res <= 0)
1111                         return res;
1112 #endif /* NEED_AP_MLME */
1113
1114                 if (hostapd_set_freq(hapd, hapd->iconf->hw_mode, iface->freq,
1115                                      hapd->iconf->channel,
1116                                      hapd->iconf->ieee80211n,
1117                                      hapd->iconf->ieee80211ac,
1118                                      hapd->iconf->secondary_channel,
1119                                      hapd->iconf->vht_oper_chwidth,
1120                                      hapd->iconf->vht_oper_centr_freq_seg0_idx,
1121                                      hapd->iconf->vht_oper_centr_freq_seg1_idx)) {
1122                         wpa_printf(MSG_ERROR, "Could not set channel for "
1123                                    "kernel driver");
1124                         return -1;
1125                 }
1126         }
1127
1128         if (iface->current_mode) {
1129                 if (hostapd_prepare_rates(iface, iface->current_mode)) {
1130                         wpa_printf(MSG_ERROR, "Failed to prepare rates "
1131                                    "table.");
1132                         hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
1133                                        HOSTAPD_LEVEL_WARNING,
1134                                        "Failed to prepare rates table.");
1135                         return -1;
1136                 }
1137         }
1138
1139         if (hapd->iconf->rts_threshold > -1 &&
1140             hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) {
1141                 wpa_printf(MSG_ERROR, "Could not set RTS threshold for "
1142                            "kernel driver");
1143                 return -1;
1144         }
1145
1146         if (hapd->iconf->fragm_threshold > -1 &&
1147             hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) {
1148                 wpa_printf(MSG_ERROR, "Could not set fragmentation threshold "
1149                            "for kernel driver");
1150                 return -1;
1151         }
1152
1153         prev_addr = hapd->own_addr;
1154
1155         for (j = 0; j < iface->num_bss; j++) {
1156                 hapd = iface->bss[j];
1157                 if (j)
1158                         os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
1159                 if (hostapd_setup_bss(hapd, j == 0))
1160                         return -1;
1161                 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0)
1162                         prev_addr = hapd->own_addr;
1163         }
1164         hapd = iface->bss[0];
1165
1166         hostapd_tx_queue_params(iface);
1167
1168         ap_list_init(iface);
1169
1170         hostapd_set_acl(hapd);
1171
1172         if (hostapd_driver_commit(hapd) < 0) {
1173                 wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
1174                            "configuration", __func__);
1175                 return -1;
1176         }
1177
1178         /*
1179          * WPS UPnP module can be initialized only when the "upnp_iface" is up.
1180          * If "interface" and "upnp_iface" are the same (e.g., non-bridge
1181          * mode), the interface is up only after driver_commit, so initialize
1182          * WPS after driver_commit.
1183          */
1184         for (j = 0; j < iface->num_bss; j++) {
1185                 if (hostapd_init_wps_complete(iface->bss[j]))
1186                         return -1;
1187         }
1188
1189         hostapd_set_state(iface, HAPD_IFACE_ENABLED);
1190         wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_ENABLED);
1191         if (hapd->setup_complete_cb)
1192                 hapd->setup_complete_cb(hapd->setup_complete_cb_ctx);
1193
1194         wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
1195                    iface->bss[0]->conf->iface);
1196         if (iface->interfaces && iface->interfaces->terminate_on_error > 0)
1197                 iface->interfaces->terminate_on_error--;
1198
1199         return 0;
1200 }
1201
1202
1203 /**
1204  * hostapd_setup_interface - Setup of an interface
1205  * @iface: Pointer to interface data.
1206  * Returns: 0 on success, -1 on failure
1207  *
1208  * Initializes the driver interface, validates the configuration,
1209  * and sets driver parameters based on the configuration.
1210  * Flushes old stations, sets the channel, encryption,
1211  * beacons, and WDS links based on the configuration.
1212  *
1213  * If interface setup requires more time, e.g., to perform HT co-ex scans, ACS,
1214  * or DFS operations, this function returns 0 before such operations have been
1215  * completed. The pending operations are registered into eloop and will be
1216  * completed from eloop callbacks. Those callbacks end up calling
1217  * hostapd_setup_interface_complete() once setup has been completed.
1218  */
1219 int hostapd_setup_interface(struct hostapd_iface *iface)
1220 {
1221         int ret;
1222
1223         ret = setup_interface(iface);
1224         if (ret) {
1225                 wpa_printf(MSG_ERROR, "%s: Unable to setup interface.",
1226                            iface->bss[0]->conf->iface);
1227                 return -1;
1228         }
1229
1230         return 0;
1231 }
1232
1233
1234 /**
1235  * hostapd_alloc_bss_data - Allocate and initialize per-BSS data
1236  * @hapd_iface: Pointer to interface data
1237  * @conf: Pointer to per-interface configuration
1238  * @bss: Pointer to per-BSS configuration for this BSS
1239  * Returns: Pointer to allocated BSS data
1240  *
1241  * This function is used to allocate per-BSS data structure. This data will be
1242  * freed after hostapd_cleanup() is called for it during interface
1243  * deinitialization.
1244  */
1245 struct hostapd_data *
1246 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
1247                        struct hostapd_config *conf,
1248                        struct hostapd_bss_config *bss)
1249 {
1250         struct hostapd_data *hapd;
1251
1252         hapd = os_zalloc(sizeof(*hapd));
1253         if (hapd == NULL)
1254                 return NULL;
1255
1256         hapd->new_assoc_sta_cb = hostapd_new_assoc_sta;
1257         hapd->iconf = conf;
1258         hapd->conf = bss;
1259         hapd->iface = hapd_iface;
1260         hapd->driver = hapd->iconf->driver;
1261         hapd->ctrl_sock = -1;
1262
1263         return hapd;
1264 }
1265
1266
1267 static void hostapd_bss_deinit(struct hostapd_data *hapd)
1268 {
1269         wpa_printf(MSG_DEBUG, "%s: deinit bss %s", __func__,
1270                    hapd->conf->iface);
1271         hostapd_free_stas(hapd);
1272         hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING);
1273         hostapd_clear_wep(hapd);
1274         hostapd_cleanup(hapd);
1275 }
1276
1277
1278 void hostapd_interface_deinit(struct hostapd_iface *iface)
1279 {
1280         int j;
1281
1282         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
1283         if (iface == NULL)
1284                 return;
1285
1286         eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
1287         iface->wait_channel_update = 0;
1288
1289         for (j = iface->num_bss - 1; j >= 0; j--)
1290                 hostapd_bss_deinit(iface->bss[j]);
1291 }
1292
1293
1294 void hostapd_interface_free(struct hostapd_iface *iface)
1295 {
1296         size_t j;
1297         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
1298         for (j = 0; j < iface->num_bss; j++) {
1299                 wpa_printf(MSG_DEBUG, "%s: free hapd %p",
1300                            __func__, iface->bss[j]);
1301                 os_free(iface->bss[j]);
1302         }
1303         hostapd_cleanup_iface(iface);
1304 }
1305
1306
1307 /**
1308  * hostapd_init - Allocate and initialize per-interface data
1309  * @config_file: Path to the configuration file
1310  * Returns: Pointer to the allocated interface data or %NULL on failure
1311  *
1312  * This function is used to allocate main data structures for per-interface
1313  * data. The allocated data buffer will be freed by calling
1314  * hostapd_cleanup_iface().
1315  */
1316 struct hostapd_iface * hostapd_init(struct hapd_interfaces *interfaces,
1317                                     const char *config_file)
1318 {
1319         struct hostapd_iface *hapd_iface = NULL;
1320         struct hostapd_config *conf = NULL;
1321         struct hostapd_data *hapd;
1322         size_t i;
1323
1324         hapd_iface = os_zalloc(sizeof(*hapd_iface));
1325         if (hapd_iface == NULL)
1326                 goto fail;
1327
1328         hapd_iface->config_fname = os_strdup(config_file);
1329         if (hapd_iface->config_fname == NULL)
1330                 goto fail;
1331
1332         conf = interfaces->config_read_cb(hapd_iface->config_fname);
1333         if (conf == NULL)
1334                 goto fail;
1335         hapd_iface->conf = conf;
1336
1337         hapd_iface->num_bss = conf->num_bss;
1338         hapd_iface->bss = os_calloc(conf->num_bss,
1339                                     sizeof(struct hostapd_data *));
1340         if (hapd_iface->bss == NULL)
1341                 goto fail;
1342
1343         for (i = 0; i < conf->num_bss; i++) {
1344                 hapd = hapd_iface->bss[i] =
1345                         hostapd_alloc_bss_data(hapd_iface, conf,
1346                                                conf->bss[i]);
1347                 if (hapd == NULL)
1348                         goto fail;
1349                 hapd->msg_ctx = hapd;
1350         }
1351
1352         return hapd_iface;
1353
1354 fail:
1355         wpa_printf(MSG_ERROR, "Failed to set up interface with %s",
1356                    config_file);
1357         if (conf)
1358                 hostapd_config_free(conf);
1359         if (hapd_iface) {
1360                 os_free(hapd_iface->config_fname);
1361                 os_free(hapd_iface->bss);
1362                 wpa_printf(MSG_DEBUG, "%s: free iface %p",
1363                            __func__, hapd_iface);
1364                 os_free(hapd_iface);
1365         }
1366         return NULL;
1367 }
1368
1369
1370 static int ifname_in_use(struct hapd_interfaces *interfaces, const char *ifname)
1371 {
1372         size_t i, j;
1373
1374         for (i = 0; i < interfaces->count; i++) {
1375                 struct hostapd_iface *iface = interfaces->iface[i];
1376                 for (j = 0; j < iface->num_bss; j++) {
1377                         struct hostapd_data *hapd = iface->bss[j];
1378                         if (os_strcmp(ifname, hapd->conf->iface) == 0)
1379                                 return 1;
1380                 }
1381         }
1382
1383         return 0;
1384 }
1385
1386
1387 /**
1388  * hostapd_interface_init_bss - Read configuration file and init BSS data
1389  *
1390  * This function is used to parse configuration file for a BSS. This BSS is
1391  * added to an existing interface sharing the same radio (if any) or a new
1392  * interface is created if this is the first interface on a radio. This
1393  * allocate memory for the BSS. No actual driver operations are started.
1394  *
1395  * This is similar to hostapd_interface_init(), but for a case where the
1396  * configuration is used to add a single BSS instead of all BSSes for a radio.
1397  */
1398 struct hostapd_iface *
1399 hostapd_interface_init_bss(struct hapd_interfaces *interfaces, const char *phy,
1400                            const char *config_fname, int debug)
1401 {
1402         struct hostapd_iface *new_iface = NULL, *iface = NULL;
1403         struct hostapd_data *hapd;
1404         int k;
1405         size_t i, bss_idx;
1406
1407         if (!phy || !*phy)
1408                 return NULL;
1409
1410         for (i = 0; i < interfaces->count; i++) {
1411                 if (os_strcmp(interfaces->iface[i]->phy, phy) == 0) {
1412                         iface = interfaces->iface[i];
1413                         break;
1414                 }
1415         }
1416
1417         wpa_printf(MSG_INFO, "Configuration file: %s (phy %s)%s",
1418                    config_fname, phy, iface ? "" : " --> new PHY");
1419         if (iface) {
1420                 struct hostapd_config *conf;
1421                 struct hostapd_bss_config **tmp_conf;
1422                 struct hostapd_data **tmp_bss;
1423                 struct hostapd_bss_config *bss;
1424                 const char *ifname;
1425
1426                 /* Add new BSS to existing iface */
1427                 conf = interfaces->config_read_cb(config_fname);
1428                 if (conf == NULL)
1429                         return NULL;
1430                 if (conf->num_bss > 1) {
1431                         wpa_printf(MSG_ERROR, "Multiple BSSes specified in BSS-config");
1432                         hostapd_config_free(conf);
1433                         return NULL;
1434                 }
1435
1436                 ifname = conf->bss[0]->iface;
1437                 if (ifname[0] != '\0' && ifname_in_use(interfaces, ifname)) {
1438                         wpa_printf(MSG_ERROR,
1439                                    "Interface name %s already in use", ifname);
1440                         hostapd_config_free(conf);
1441                         return NULL;
1442                 }
1443
1444                 tmp_conf = os_realloc_array(
1445                         iface->conf->bss, iface->conf->num_bss + 1,
1446                         sizeof(struct hostapd_bss_config *));
1447                 tmp_bss = os_realloc_array(iface->bss, iface->num_bss + 1,
1448                                            sizeof(struct hostapd_data *));
1449                 if (tmp_bss)
1450                         iface->bss = tmp_bss;
1451                 if (tmp_conf) {
1452                         iface->conf->bss = tmp_conf;
1453                         iface->conf->last_bss = tmp_conf[0];
1454                 }
1455                 if (tmp_bss == NULL || tmp_conf == NULL) {
1456                         hostapd_config_free(conf);
1457                         return NULL;
1458                 }
1459                 bss = iface->conf->bss[iface->conf->num_bss] = conf->bss[0];
1460                 iface->conf->num_bss++;
1461
1462                 hapd = hostapd_alloc_bss_data(iface, iface->conf, bss);
1463                 if (hapd == NULL) {
1464                         iface->conf->num_bss--;
1465                         hostapd_config_free(conf);
1466                         return NULL;
1467                 }
1468                 iface->conf->last_bss = bss;
1469                 iface->bss[iface->num_bss] = hapd;
1470                 hapd->msg_ctx = hapd;
1471
1472                 bss_idx = iface->num_bss++;
1473                 conf->num_bss--;
1474                 conf->bss[0] = NULL;
1475                 hostapd_config_free(conf);
1476         } else {
1477                 /* Add a new iface with the first BSS */
1478                 new_iface = iface = hostapd_init(interfaces, config_fname);
1479                 if (!iface)
1480                         return NULL;
1481                 os_strlcpy(iface->phy, phy, sizeof(iface->phy));
1482                 iface->interfaces = interfaces;
1483                 bss_idx = 0;
1484         }
1485
1486         for (k = 0; k < debug; k++) {
1487                 if (iface->bss[bss_idx]->conf->logger_stdout_level > 0)
1488                         iface->bss[bss_idx]->conf->logger_stdout_level--;
1489         }
1490
1491         if (iface->conf->bss[bss_idx]->iface[0] == '\0' &&
1492             !hostapd_drv_none(iface->bss[bss_idx])) {
1493                 wpa_printf(MSG_ERROR, "Interface name not specified in %s",
1494                            config_fname);
1495                 if (new_iface)
1496                         hostapd_interface_deinit_free(new_iface);
1497                 return NULL;
1498         }
1499
1500         return iface;
1501 }
1502
1503
1504 void hostapd_interface_deinit_free(struct hostapd_iface *iface)
1505 {
1506         const struct wpa_driver_ops *driver;
1507         void *drv_priv;
1508
1509         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
1510         if (iface == NULL)
1511                 return;
1512         wpa_printf(MSG_DEBUG, "%s: num_bss=%u conf->num_bss=%u",
1513                    __func__, (unsigned int) iface->num_bss,
1514                    (unsigned int) iface->conf->num_bss);
1515         driver = iface->bss[0]->driver;
1516         drv_priv = iface->bss[0]->drv_priv;
1517         hostapd_interface_deinit(iface);
1518         wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
1519                    __func__, driver, drv_priv);
1520         if (driver && driver->hapd_deinit && drv_priv)
1521                 driver->hapd_deinit(drv_priv);
1522         hostapd_interface_free(iface);
1523 }
1524
1525
1526 int hostapd_enable_iface(struct hostapd_iface *hapd_iface)
1527 {
1528         if (hapd_iface->bss[0]->drv_priv != NULL) {
1529                 wpa_printf(MSG_ERROR, "Interface %s already enabled",
1530                            hapd_iface->conf->bss[0]->iface);
1531                 return -1;
1532         }
1533
1534         wpa_printf(MSG_DEBUG, "Enable interface %s",
1535                    hapd_iface->conf->bss[0]->iface);
1536
1537         if (hapd_iface->interfaces == NULL ||
1538             hapd_iface->interfaces->driver_init == NULL ||
1539             hapd_iface->interfaces->driver_init(hapd_iface))
1540                 return -1;
1541
1542         if (hostapd_setup_interface(hapd_iface)) {
1543                 const struct wpa_driver_ops *driver;
1544                 void *drv_priv;
1545
1546                 driver = hapd_iface->bss[0]->driver;
1547                 drv_priv = hapd_iface->bss[0]->drv_priv;
1548                 wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
1549                            __func__, driver, drv_priv);
1550                 if (driver && driver->hapd_deinit && drv_priv) {
1551                         driver->hapd_deinit(drv_priv);
1552                         hapd_iface->bss[0]->drv_priv = NULL;
1553                 }
1554                 return -1;
1555         }
1556
1557         return 0;
1558 }
1559
1560
1561 int hostapd_reload_iface(struct hostapd_iface *hapd_iface)
1562 {
1563         size_t j;
1564
1565         wpa_printf(MSG_DEBUG, "Reload interface %s",
1566                    hapd_iface->conf->bss[0]->iface);
1567         for (j = 0; j < hapd_iface->num_bss; j++)
1568                 hostapd_set_security_params(hapd_iface->conf->bss[j]);
1569         if (hostapd_config_check(hapd_iface->conf) < 0) {
1570                 wpa_printf(MSG_ERROR, "Updated configuration is invalid");
1571                 return -1;
1572         }
1573         hostapd_clear_old(hapd_iface);
1574         for (j = 0; j < hapd_iface->num_bss; j++)
1575                 hostapd_reload_bss(hapd_iface->bss[j]);
1576
1577         return 0;
1578 }
1579
1580
1581 int hostapd_disable_iface(struct hostapd_iface *hapd_iface)
1582 {
1583         size_t j;
1584         const struct wpa_driver_ops *driver;
1585         void *drv_priv;
1586
1587         if (hapd_iface == NULL)
1588                 return -1;
1589         wpa_msg(hapd_iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1590         driver = hapd_iface->bss[0]->driver;
1591         drv_priv = hapd_iface->bss[0]->drv_priv;
1592
1593         /* whatever hostapd_interface_deinit does */
1594         for (j = 0; j < hapd_iface->num_bss; j++) {
1595                 struct hostapd_data *hapd = hapd_iface->bss[j];
1596                 hostapd_free_stas(hapd);
1597                 hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING);
1598                 hostapd_clear_wep(hapd);
1599                 hostapd_free_hapd_data(hapd);
1600         }
1601
1602         wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
1603                    __func__, driver, drv_priv);
1604         if (driver && driver->hapd_deinit && drv_priv) {
1605                 driver->hapd_deinit(drv_priv);
1606                 hapd_iface->bss[0]->drv_priv = NULL;
1607         }
1608
1609         /* From hostapd_cleanup_iface: These were initialized in
1610          * hostapd_setup_interface and hostapd_setup_interface_complete
1611          */
1612         hostapd_cleanup_iface_partial(hapd_iface);
1613
1614         wpa_printf(MSG_DEBUG, "Interface %s disabled",
1615                    hapd_iface->bss[0]->conf->iface);
1616         hostapd_set_state(hapd_iface, HAPD_IFACE_DISABLED);
1617         return 0;
1618 }
1619
1620
1621 static struct hostapd_iface *
1622 hostapd_iface_alloc(struct hapd_interfaces *interfaces)
1623 {
1624         struct hostapd_iface **iface, *hapd_iface;
1625
1626         iface = os_realloc_array(interfaces->iface, interfaces->count + 1,
1627                                  sizeof(struct hostapd_iface *));
1628         if (iface == NULL)
1629                 return NULL;
1630         interfaces->iface = iface;
1631         hapd_iface = interfaces->iface[interfaces->count] =
1632                 os_zalloc(sizeof(*hapd_iface));
1633         if (hapd_iface == NULL) {
1634                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
1635                            "the interface", __func__);
1636                 return NULL;
1637         }
1638         interfaces->count++;
1639         hapd_iface->interfaces = interfaces;
1640
1641         return hapd_iface;
1642 }
1643
1644
1645 static struct hostapd_config *
1646 hostapd_config_alloc(struct hapd_interfaces *interfaces, const char *ifname,
1647                      const char *ctrl_iface)
1648 {
1649         struct hostapd_bss_config *bss;
1650         struct hostapd_config *conf;
1651
1652         /* Allocates memory for bss and conf */
1653         conf = hostapd_config_defaults();
1654         if (conf == NULL) {
1655                  wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
1656                                 "configuration", __func__);
1657                 return NULL;
1658         }
1659
1660         conf->driver = wpa_drivers[0];
1661         if (conf->driver == NULL) {
1662                 wpa_printf(MSG_ERROR, "No driver wrappers registered!");
1663                 hostapd_config_free(conf);
1664                 return NULL;
1665         }
1666
1667         bss = conf->last_bss = conf->bss[0];
1668
1669         os_strlcpy(bss->iface, ifname, sizeof(bss->iface));
1670         bss->ctrl_interface = os_strdup(ctrl_iface);
1671         if (bss->ctrl_interface == NULL) {
1672                 hostapd_config_free(conf);
1673                 return NULL;
1674         }
1675
1676         /* Reading configuration file skipped, will be done in SET!
1677          * From reading the configuration till the end has to be done in
1678          * SET
1679          */
1680         return conf;
1681 }
1682
1683
1684 static struct hostapd_iface * hostapd_data_alloc(
1685         struct hapd_interfaces *interfaces, struct hostapd_config *conf)
1686 {
1687         size_t i;
1688         struct hostapd_iface *hapd_iface =
1689                 interfaces->iface[interfaces->count - 1];
1690         struct hostapd_data *hapd;
1691
1692         hapd_iface->conf = conf;
1693         hapd_iface->num_bss = conf->num_bss;
1694
1695         hapd_iface->bss = os_zalloc(conf->num_bss *
1696                                     sizeof(struct hostapd_data *));
1697         if (hapd_iface->bss == NULL)
1698                 return NULL;
1699
1700         for (i = 0; i < conf->num_bss; i++) {
1701                 hapd = hapd_iface->bss[i] =
1702                         hostapd_alloc_bss_data(hapd_iface, conf, conf->bss[i]);
1703                 if (hapd == NULL)
1704                         return NULL;
1705                 hapd->msg_ctx = hapd;
1706         }
1707
1708         hapd_iface->interfaces = interfaces;
1709
1710         return hapd_iface;
1711 }
1712
1713
1714 int hostapd_add_iface(struct hapd_interfaces *interfaces, char *buf)
1715 {
1716         struct hostapd_config *conf = NULL;
1717         struct hostapd_iface *hapd_iface = NULL, *new_iface = NULL;
1718         struct hostapd_data *hapd;
1719         char *ptr;
1720         size_t i, j;
1721         const char *conf_file = NULL, *phy_name = NULL;
1722
1723         if (os_strncmp(buf, "bss_config=", 11) == 0) {
1724                 char *pos;
1725                 phy_name = buf + 11;
1726                 pos = os_strchr(phy_name, ':');
1727                 if (!pos)
1728                         return -1;
1729                 *pos++ = '\0';
1730                 conf_file = pos;
1731                 if (!os_strlen(conf_file))
1732                         return -1;
1733
1734                 hapd_iface = hostapd_interface_init_bss(interfaces, phy_name,
1735                                                         conf_file, 0);
1736                 if (!hapd_iface)
1737                         return -1;
1738                 for (j = 0; j < interfaces->count; j++) {
1739                         if (interfaces->iface[j] == hapd_iface)
1740                                 break;
1741                 }
1742                 if (j == interfaces->count) {
1743                         struct hostapd_iface **tmp;
1744                         tmp = os_realloc_array(interfaces->iface,
1745                                                interfaces->count + 1,
1746                                                sizeof(struct hostapd_iface *));
1747                         if (!tmp) {
1748                                 hostapd_interface_deinit_free(hapd_iface);
1749                                 return -1;
1750                         }
1751                         interfaces->iface = tmp;
1752                         interfaces->iface[interfaces->count++] = hapd_iface;
1753                         new_iface = hapd_iface;
1754                 }
1755
1756                 if (new_iface) {
1757                         if (interfaces->driver_init(hapd_iface) ||
1758                             hostapd_setup_interface(hapd_iface)) {
1759                                 interfaces->count--;
1760                                 goto fail;
1761                         }
1762                 } else {
1763                         /* Assign new BSS with bss[0]'s driver info */
1764                         hapd = hapd_iface->bss[hapd_iface->num_bss - 1];
1765                         hapd->driver = hapd_iface->bss[0]->driver;
1766                         hapd->drv_priv = hapd_iface->bss[0]->drv_priv;
1767                         os_memcpy(hapd->own_addr, hapd_iface->bss[0]->own_addr,
1768                                   ETH_ALEN);
1769
1770                         if (start_ctrl_iface_bss(hapd) < 0 ||
1771                             hostapd_setup_bss(hapd, -1)) {
1772                                 hapd_iface->conf->num_bss--;
1773                                 hapd_iface->num_bss--;
1774                                 wpa_printf(MSG_DEBUG, "%s: free hapd %p %s",
1775                                            __func__, hapd, hapd->conf->iface);
1776                                 os_free(hapd);
1777                                 return -1;
1778                         }
1779                 }
1780                 return 0;
1781         }
1782
1783         ptr = os_strchr(buf, ' ');
1784         if (ptr == NULL)
1785                 return -1;
1786         *ptr++ = '\0';
1787
1788         if (os_strncmp(ptr, "config=", 7) == 0)
1789                 conf_file = ptr + 7;
1790
1791         for (i = 0; i < interfaces->count; i++) {
1792                 if (!os_strcmp(interfaces->iface[i]->conf->bss[0]->iface,
1793                                buf)) {
1794                         wpa_printf(MSG_INFO, "Cannot add interface - it "
1795                                    "already exists");
1796                         return -1;
1797                 }
1798         }
1799
1800         hapd_iface = hostapd_iface_alloc(interfaces);
1801         if (hapd_iface == NULL) {
1802                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
1803                            "for interface", __func__);
1804                 goto fail;
1805         }
1806
1807         if (conf_file && interfaces->config_read_cb) {
1808                 conf = interfaces->config_read_cb(conf_file);
1809                 if (conf && conf->bss)
1810                         os_strlcpy(conf->bss[0]->iface, buf,
1811                                    sizeof(conf->bss[0]->iface));
1812         } else
1813                 conf = hostapd_config_alloc(interfaces, buf, ptr);
1814         if (conf == NULL || conf->bss == NULL) {
1815                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
1816                            "for configuration", __func__);
1817                 goto fail;
1818         }
1819
1820         hapd_iface = hostapd_data_alloc(interfaces, conf);
1821         if (hapd_iface == NULL) {
1822                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
1823                            "for hostapd", __func__);
1824                 goto fail;
1825         }
1826
1827         if (start_ctrl_iface(hapd_iface) < 0)
1828                 goto fail;
1829
1830         wpa_printf(MSG_INFO, "Add interface '%s'", conf->bss[0]->iface);
1831
1832         return 0;
1833
1834 fail:
1835         if (conf)
1836                 hostapd_config_free(conf);
1837         if (hapd_iface) {
1838                 if (hapd_iface->bss) {
1839                         for (i = 0; i < hapd_iface->num_bss; i++) {
1840                                 hapd = hapd_iface->bss[i];
1841                                 if (hapd && hapd_iface->interfaces &&
1842                                     hapd_iface->interfaces->ctrl_iface_deinit)
1843                                         hapd_iface->interfaces->
1844                                                 ctrl_iface_deinit(hapd);
1845                                 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
1846                                            __func__, hapd_iface->bss[i],
1847                                         hapd_iface->bss[i]->conf->iface);
1848                                 os_free(hapd_iface->bss[i]);
1849                         }
1850                         os_free(hapd_iface->bss);
1851                 }
1852                 wpa_printf(MSG_DEBUG, "%s: free iface %p",
1853                            __func__, hapd_iface);
1854                 os_free(hapd_iface);
1855         }
1856         return -1;
1857 }
1858
1859
1860 static int hostapd_remove_bss(struct hostapd_iface *iface, unsigned int idx)
1861 {
1862         size_t i;
1863
1864         wpa_printf(MSG_INFO, "Remove BSS '%s'", iface->conf->bss[idx]->iface);
1865
1866         /* Remove hostapd_data only if it has already been initialized */
1867         if (idx < iface->num_bss) {
1868                 struct hostapd_data *hapd = iface->bss[idx];
1869
1870                 hostapd_bss_deinit(hapd);
1871                 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
1872                            __func__, hapd, hapd->conf->iface);
1873                 hostapd_config_free_bss(hapd->conf);
1874                 os_free(hapd);
1875
1876                 iface->num_bss--;
1877
1878                 for (i = idx; i < iface->num_bss; i++)
1879                         iface->bss[i] = iface->bss[i + 1];
1880         } else {
1881                 hostapd_config_free_bss(iface->conf->bss[idx]);
1882                 iface->conf->bss[idx] = NULL;
1883         }
1884
1885         iface->conf->num_bss--;
1886         for (i = idx; i < iface->conf->num_bss; i++)
1887                 iface->conf->bss[i] = iface->conf->bss[i + 1];
1888
1889         return 0;
1890 }
1891
1892
1893 int hostapd_remove_iface(struct hapd_interfaces *interfaces, char *buf)
1894 {
1895         struct hostapd_iface *hapd_iface;
1896         size_t i, j, k = 0;
1897
1898         for (i = 0; i < interfaces->count; i++) {
1899                 hapd_iface = interfaces->iface[i];
1900                 if (hapd_iface == NULL)
1901                         return -1;
1902                 if (!os_strcmp(hapd_iface->conf->bss[0]->iface, buf)) {
1903                         wpa_printf(MSG_INFO, "Remove interface '%s'", buf);
1904                         hostapd_interface_deinit_free(hapd_iface);
1905                         k = i;
1906                         while (k < (interfaces->count - 1)) {
1907                                 interfaces->iface[k] =
1908                                         interfaces->iface[k + 1];
1909                                 k++;
1910                         }
1911                         interfaces->count--;
1912                         return 0;
1913                 }
1914
1915                 for (j = 0; j < hapd_iface->conf->num_bss; j++) {
1916                         if (!os_strcmp(hapd_iface->conf->bss[j]->iface, buf))
1917                                 return hostapd_remove_bss(hapd_iface, j);
1918                 }
1919         }
1920         return -1;
1921 }
1922
1923
1924 /**
1925  * hostapd_new_assoc_sta - Notify that a new station associated with the AP
1926  * @hapd: Pointer to BSS data
1927  * @sta: Pointer to the associated STA data
1928  * @reassoc: 1 to indicate this was a re-association; 0 = first association
1929  *
1930  * This function will be called whenever a station associates with the AP. It
1931  * can be called from ieee802_11.c for drivers that export MLME to hostapd and
1932  * from drv_callbacks.c based on driver events for drivers that take care of
1933  * management frames (IEEE 802.11 authentication and association) internally.
1934  */
1935 void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
1936                            int reassoc)
1937 {
1938         if (hapd->tkip_countermeasures) {
1939                 hostapd_drv_sta_deauth(hapd, sta->addr,
1940                                        WLAN_REASON_MICHAEL_MIC_FAILURE);
1941                 return;
1942         }
1943
1944         hostapd_prune_associations(hapd, sta->addr);
1945
1946         /* IEEE 802.11F (IAPP) */
1947         if (hapd->conf->ieee802_11f)
1948                 iapp_new_station(hapd->iapp, sta);
1949
1950 #ifdef CONFIG_P2P
1951         if (sta->p2p_ie == NULL && !sta->no_p2p_set) {
1952                 sta->no_p2p_set = 1;
1953                 hapd->num_sta_no_p2p++;
1954                 if (hapd->num_sta_no_p2p == 1)
1955                         hostapd_p2p_non_p2p_sta_connected(hapd);
1956         }
1957 #endif /* CONFIG_P2P */
1958
1959         /* Start accounting here, if IEEE 802.1X and WPA are not used.
1960          * IEEE 802.1X/WPA code will start accounting after the station has
1961          * been authorized. */
1962         if (!hapd->conf->ieee802_1x && !hapd->conf->wpa) {
1963                 os_get_time(&sta->connected_time);
1964                 accounting_sta_start(hapd, sta);
1965         }
1966
1967         /* Start IEEE 802.1X authentication process for new stations */
1968         ieee802_1x_new_station(hapd, sta);
1969         if (reassoc) {
1970                 if (sta->auth_alg != WLAN_AUTH_FT &&
1971                     !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)))
1972                         wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH);
1973         } else
1974                 wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm);
1975
1976         wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
1977                    "for " MACSTR " (%d seconds - ap_max_inactivity)",
1978                    __func__, MAC2STR(sta->addr),
1979                    hapd->conf->ap_max_inactivity);
1980         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1981         eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
1982                                ap_handle_timer, hapd, sta);
1983 }
1984
1985
1986 const char * hostapd_state_text(enum hostapd_iface_state s)
1987 {
1988         switch (s) {
1989         case HAPD_IFACE_UNINITIALIZED:
1990                 return "UNINITIALIZED";
1991         case HAPD_IFACE_DISABLED:
1992                 return "DISABLED";
1993         case HAPD_IFACE_COUNTRY_UPDATE:
1994                 return "COUNTRY_UPDATE";
1995         case HAPD_IFACE_ACS:
1996                 return "ACS";
1997         case HAPD_IFACE_HT_SCAN:
1998                 return "HT_SCAN";
1999         case HAPD_IFACE_DFS:
2000                 return "DFS";
2001         case HAPD_IFACE_ENABLED:
2002                 return "ENABLED";
2003         }
2004
2005         return "UNKNOWN";
2006 }
2007
2008
2009 void hostapd_set_state(struct hostapd_iface *iface, enum hostapd_iface_state s)
2010 {
2011         wpa_printf(MSG_INFO, "%s: interface state %s->%s",
2012                    iface->conf->bss[0]->iface, hostapd_state_text(iface->state),
2013                    hostapd_state_text(s));
2014         iface->state = s;
2015 }