hostapd/hostapd.c

   1 /*
   2  * hostapd / Initialization and configuration
   3  * Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "includes.h"
  16
  17 #include "eloop.h"
  18 #include "hostapd.h"
  19 #include "ieee802_1x.h"
  20 #include "beacon.h"
  21 #include "hw_features.h"
  22 #include "accounting.h"
  23 #include "eapol_sm.h"
  24 #include "iapp.h"
  25 #include "common/ieee802_11_defs.h"
  26 #include "ieee802_11_auth.h"
  27 #include "sta_info.h"
  28 #include "ap_list.h"
  29 #include "driver_i.h"
  30 #include "radius/radius_client.h"
  31 #include "radius/radius_server.h"
  32 #include "wpa.h"
  33 #include "preauth.h"
  34 #include "vlan_init.h"
  35 #include "ctrl_iface.h"
  36 #include "tls.h"
  37 #include "eap_server/eap_sim_db.h"
  38 #include "eap_server/eap.h"
  39 #include "eap_server/tncs.h"
  40 #include "l2_packet/l2_packet.h"
  41 #include "wps_hostapd.h"
  42 #include "tkip_countermeasures.h"
  43
  44
  45 static int hostapd_radius_get_eap_user(void *ctx, const u8 *identity,
  46                                        size_t identity_len, int phase2,
  47                                        struct eap_user *user);
  48 static int hostapd_flush_old_stations(struct hostapd_data *hapd);
  49 static int hostapd_setup_wpa(struct hostapd_data *hapd);
  50 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd);
  51
  52 extern int wpa_debug_level;
  53
  54
  55 #ifdef EAP_SERVER
  56 static int hostapd_sim_db_cb_sta(struct hostapd_data *hapd,
  57                                  struct sta_info *sta, void *ctx)
  58 {
  59         if (eapol_auth_eap_pending_cb(sta->eapol_sm, ctx) == 0)
  60                 return 1;
  61         return 0;
  62 }
  63
  64
  65 static void hostapd_sim_db_cb(void *ctx, void *session_ctx)
  66 {
  67         struct hostapd_data *hapd = ctx;
  68         if (ap_for_each_sta(hapd, hostapd_sim_db_cb_sta, session_ctx) == 0)
  69                 radius_server_eap_pending_cb(hapd->radius_srv, session_ctx);
  70 }
  71 #endif /* EAP_SERVER */
  72
  73
  74 static void hostapd_wpa_auth_conf(struct hostapd_bss_config *conf,
  75                                   struct wpa_auth_config *wconf)
  76 {
  77         wconf->wpa = conf->wpa;
  78         wconf->wpa_key_mgmt = conf->wpa_key_mgmt;
  79         wconf->wpa_pairwise = conf->wpa_pairwise;
  80         wconf->wpa_group = conf->wpa_group;
  81         wconf->wpa_group_rekey = conf->wpa_group_rekey;
  82         wconf->wpa_strict_rekey = conf->wpa_strict_rekey;
  83         wconf->wpa_gmk_rekey = conf->wpa_gmk_rekey;
  84         wconf->wpa_ptk_rekey = conf->wpa_ptk_rekey;
  85         wconf->rsn_pairwise = conf->rsn_pairwise;
  86         wconf->rsn_preauth = conf->rsn_preauth;
  87         wconf->eapol_version = conf->eapol_version;
  88         wconf->peerkey = conf->peerkey;
  89         wconf->wmm_enabled = conf->wmm_enabled;
  90         wconf->okc = conf->okc;
  91 #ifdef CONFIG_IEEE80211W
  92         wconf->ieee80211w = conf->ieee80211w;
  93 #endif /* CONFIG_IEEE80211W */
  94 #ifdef CONFIG_IEEE80211R
  95         wconf->ssid_len = conf->ssid.ssid_len;
  96         if (wconf->ssid_len > SSID_LEN)
  97                 wconf->ssid_len = SSID_LEN;
  98         os_memcpy(wconf->ssid, conf->ssid.ssid, wconf->ssid_len);
  99         os_memcpy(wconf->mobility_domain, conf->mobility_domain,
 100                   MOBILITY_DOMAIN_ID_LEN);
 101         if (conf->nas_identifier &&
 102             os_strlen(conf->nas_identifier) <= FT_R0KH_ID_MAX_LEN) {
 103                 wconf->r0_key_holder_len = os_strlen(conf->nas_identifier);
 104                 os_memcpy(wconf->r0_key_holder, conf->nas_identifier,
 105                           wconf->r0_key_holder_len);
 106         }
 107         os_memcpy(wconf->r1_key_holder, conf->r1_key_holder, FT_R1KH_ID_LEN);
 108         wconf->r0_key_lifetime = conf->r0_key_lifetime;
 109         wconf->reassociation_deadline = conf->reassociation_deadline;
 110         wconf->r0kh_list = conf->r0kh_list;
 111         wconf->r1kh_list = conf->r1kh_list;
 112         wconf->pmk_r1_push = conf->pmk_r1_push;
 113 #endif /* CONFIG_IEEE80211R */
 114 }
 115
 116
 117 int hostapd_reload_config(struct hostapd_iface *iface)
 118 {
 119         struct hostapd_data *hapd = iface->bss[0];
 120         struct hostapd_config *newconf, *oldconf;
 121         struct wpa_auth_config wpa_auth_conf;
 122         size_t j;
 123
 124         newconf = hostapd_config_read(iface->config_fname);
 125         if (newconf == NULL)
 126                 return -1;
 127
 128         /*
 129          * Deauthenticate all stations since the new configuration may not
 130          * allow them to use the BSS anymore.
 131          */
 132         for (j = 0; j < iface->num_bss; j++)
 133                 hostapd_flush_old_stations(iface->bss[j]);
 134
 135         /* TODO: update dynamic data based on changed configuration
 136          * items (e.g., open/close sockets, etc.) */
 137         radius_client_flush(hapd->radius, 0);
 138
 139         oldconf = hapd->iconf;
 140         hapd->iconf = newconf;
 141         hapd->conf = &newconf->bss[0];
 142         iface->conf = newconf;
 143
 144         if (hostapd_setup_wpa_psk(hapd->conf)) {
 145                 wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
 146                            "after reloading configuration");
 147         }
 148
 149         if (hapd->conf->wpa && hapd->wpa_auth == NULL)
 150                 hostapd_setup_wpa(hapd);
 151         else if (hapd->conf->wpa) {
 152                 hostapd_wpa_auth_conf(&newconf->bss[0], &wpa_auth_conf);
 153                 wpa_reconfig(hapd->wpa_auth, &wpa_auth_conf);
 154         } else if (hapd->wpa_auth) {
 155                 wpa_deinit(hapd->wpa_auth);
 156                 hapd->wpa_auth = NULL;
 157                 hostapd_set_privacy(hapd, 0);
 158                 hostapd_setup_encryption(hapd->conf->iface, hapd);
 159         }
 160
 161         ieee802_11_set_beacon(hapd);
 162
 163         if (hapd->conf->ssid.ssid_set &&
 164             hostapd_set_ssid(hapd, (u8 *) hapd->conf->ssid.ssid,
 165                              hapd->conf->ssid.ssid_len)) {
 166                 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
 167                 /* try to continue */
 168         }
 169
 170         if (hapd->conf->ieee802_1x || hapd->conf->wpa)
 171                 hostapd_set_ieee8021x(hapd->conf->iface, hapd, 1);
 172
 173         hostapd_config_free(oldconf);
 174
 175         wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface);
 176
 177         return 0;
 178 }
 179
 180
 181 int handle_reload_iface(struct hostapd_iface *iface, void *ctx)
 182 {
 183         if (hostapd_reload_config(iface) < 0) {
 184                 wpa_printf(MSG_WARNING, "Failed to read new configuration "
 185                            "file - continuing with old.");
 186         }
 187         return 0;
 188 }
 189
 190
 191 #ifdef HOSTAPD_DUMP_STATE
 192 /**
 193  * hostapd_dump_state - SIGUSR1 handler to dump hostapd state to a text file
 194  */
 195 static void hostapd_dump_state(struct hostapd_data *hapd)
 196 {
 197         FILE *f;
 198         time_t now;
 199         struct sta_info *sta;
 200         int i;
 201         char *buf;
 202
 203         if (!hapd->conf->dump_log_name) {
 204                 wpa_printf(MSG_DEBUG, "Dump file not defined - ignoring dump "
 205                            "request");
 206                 return;
 207         }
 208
 209         wpa_printf(MSG_DEBUG, "Dumping hostapd state to '%s'",
 210                    hapd->conf->dump_log_name);
 211         f = fopen(hapd->conf->dump_log_name, "w");
 212         if (f == NULL) {
 213                 wpa_printf(MSG_WARNING, "Could not open dump file '%s' for "
 214                            "writing.", hapd->conf->dump_log_name);
 215                 return;
 216         }
 217
 218         time(&now);
 219         fprintf(f, "hostapd state dump - %s", ctime(&now));
 220         fprintf(f, "num_sta=%d num_sta_non_erp=%d "
 221                 "num_sta_no_short_slot_time=%d\n"
 222                 "num_sta_no_short_preamble=%d\n",
 223                 hapd->num_sta, hapd->iface->num_sta_non_erp,
 224                 hapd->iface->num_sta_no_short_slot_time,
 225                 hapd->iface->num_sta_no_short_preamble);
 226
 227         for (sta = hapd->sta_list; sta != NULL; sta = sta->next) {
 228                 fprintf(f, "\nSTA=" MACSTR "\n", MAC2STR(sta->addr));
 229
 230                 fprintf(f,
 231                         "  AID=%d flags=0x%x %s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
 232                         "  capability=0x%x listen_interval=%d\n",
 233                         sta->aid,
 234                         sta->flags,
 235                         (sta->flags & WLAN_STA_AUTH ? "[AUTH]" : ""),
 236                         (sta->flags & WLAN_STA_ASSOC ? "[ASSOC]" : ""),
 237                         (sta->flags & WLAN_STA_PS ? "[PS]" : ""),
 238                         (sta->flags & WLAN_STA_TIM ? "[TIM]" : ""),
 239                         (sta->flags & WLAN_STA_PERM ? "[PERM]" : ""),
 240                         (sta->flags & WLAN_STA_AUTHORIZED ? "[AUTHORIZED]" :
 241                          ""),
 242                         (sta->flags & WLAN_STA_PENDING_POLL ? "[PENDING_POLL" :
 243                          ""),
 244                         (sta->flags & WLAN_STA_SHORT_PREAMBLE ?
 245                          "[SHORT_PREAMBLE]" : ""),
 246                         (sta->flags & WLAN_STA_PREAUTH ? "[PREAUTH]" : ""),
 247                         (sta->flags & WLAN_STA_WMM ? "[WMM]" : ""),
 248                         (sta->flags & WLAN_STA_MFP ? "[MFP]" : ""),
 249                         (sta->flags & WLAN_STA_WPS ? "[WPS]" : ""),
 250                         (sta->flags & WLAN_STA_MAYBE_WPS ? "[MAYBE_WPS]" : ""),
 251                         (sta->flags & WLAN_STA_NONERP ? "[NonERP]" : ""),
 252                         sta->capability,
 253                         sta->listen_interval);
 254
 255                 fprintf(f, "  supported_rates=");
 256                 for (i = 0; i < sta->supported_rates_len; i++)
 257                         fprintf(f, "%02x ", sta->supported_rates[i]);
 258                 fprintf(f, "\n");
 259
 260                 fprintf(f,
 261                         "  timeout_next=%s\n",
 262                         (sta->timeout_next == STA_NULLFUNC ? "NULLFUNC POLL" :
 263                          (sta->timeout_next == STA_DISASSOC ? "DISASSOC" :
 264                           "DEAUTH")));
 265
 266                 ieee802_1x_dump_state(f, "  ", sta);
 267         }
 268
 269         buf = os_malloc(4096);
 270         if (buf) {
 271                 int count = radius_client_get_mib(hapd->radius, buf, 4096);
 272                 if (count < 0)
 273                         count = 0;
 274                 else if (count > 4095)
 275                         count = 4095;
 276                 buf[count] = '\0';
 277                 fprintf(f, "%s", buf);
 278
 279                 count = radius_server_get_mib(hapd->radius_srv, buf, 4096);
 280                 if (count < 0)
 281                         count = 0;
 282                 else if (count > 4095)
 283                         count = 4095;
 284                 buf[count] = '\0';
 285                 fprintf(f, "%s", buf);
 286                 os_free(buf);
 287         }
 288         fclose(f);
 289 }
 290
 291
 292 int handle_dump_state_iface(struct hostapd_iface *iface, void *ctx)
 293 {
 294         size_t i;
 295
 296         for (i = 0; i < iface->num_bss; i++)
 297                 hostapd_dump_state(iface->bss[i]);
 298
 299         return 0;
 300 }
 301 #endif /* HOSTAPD_DUMP_STATE */
 302
 303
 304 static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd,
 305                                               char *ifname)
 306 {
 307         int i;
 308
 309         for (i = 0; i < NUM_WEP_KEYS; i++) {
 310                 if (hostapd_set_key(ifname, hapd, WPA_ALG_NONE, NULL, i,
 311                                     i == 0 ? 1 : 0, NULL, 0, NULL, 0)) {
 312                         wpa_printf(MSG_DEBUG, "Failed to clear default "
 313                                    "encryption keys (ifname=%s keyidx=%d)",
 314                                    ifname, i);
 315                 }
 316         }
 317 #ifdef CONFIG_IEEE80211W
 318         if (hapd->conf->ieee80211w) {
 319                 for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) {
 320                         if (hostapd_set_key(ifname, hapd, WPA_ALG_NONE, NULL,
 321                                             i, i == 0 ? 1 : 0, NULL, 0,
 322                                             NULL, 0)) {
 323                                 wpa_printf(MSG_DEBUG, "Failed to clear "
 324                                            "default mgmt encryption keys "
 325                                            "(ifname=%s keyidx=%d)", ifname, i);
 326                         }
 327                 }
 328         }
 329 #endif /* CONFIG_IEEE80211W */
 330 }
 331
 332
 333 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd)
 334 {
 335         hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface);
 336         return 0;
 337 }
 338
 339
 340 static int hostapd_broadcast_wep_set(struct hostapd_data *hapd)
 341 {
 342         int errors = 0, idx;
 343         struct hostapd_ssid *ssid = &hapd->conf->ssid;
 344
 345         idx = ssid->wep.idx;
 346         if (ssid->wep.default_len &&
 347             hostapd_set_key(hapd->conf->iface,
 348                             hapd, WPA_ALG_WEP, NULL, idx, idx == ssid->wep.idx,
 349                             NULL, 0, ssid->wep.key[idx], ssid->wep.len[idx])) {
 350                 wpa_printf(MSG_WARNING, "Could not set WEP encryption.");
 351                 errors++;
 352         }
 353
 354         if (ssid->dyn_vlan_keys) {
 355                 size_t i;
 356                 for (i = 0; i <= ssid->max_dyn_vlan_keys; i++) {
 357                         const char *ifname;
 358                         struct hostapd_wep_keys *key = ssid->dyn_vlan_keys[i];
 359                         if (key == NULL)
 360                                 continue;
 361                         ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan,
 362                                                             i);
 363                         if (ifname == NULL)
 364                                 continue;
 365
 366                         idx = key->idx;
 367                         if (hostapd_set_key(ifname, hapd, WPA_ALG_WEP, NULL,
 368                                             idx, idx == key->idx, NULL, 0,
 369                                             key->key[idx], key->len[idx])) {
 370                                 wpa_printf(MSG_WARNING, "Could not set "
 371                                            "dynamic VLAN WEP encryption.");
 372                                 errors++;
 373                         }
 374                 }
 375         }
 376
 377         return errors;
 378 }
 379
 380 /**
 381  * hostapd_cleanup - Per-BSS cleanup (deinitialization)
 382  * @hapd: Pointer to BSS data
 383  *
 384  * This function is used to free all per-BSS data structures and resources.
 385  * This gets called in a loop for each BSS between calls to
 386  * hostapd_cleanup_iface_pre() and hostapd_cleanup_iface() when an interface
 387  * is deinitialized. Most of the modules that are initialized in
 388  * hostapd_setup_bss() are deinitialized here.
 389  */
 390 static void hostapd_cleanup(struct hostapd_data *hapd)
 391 {
 392         hostapd_ctrl_iface_deinit(hapd);
 393
 394         iapp_deinit(hapd->iapp);
 395         hapd->iapp = NULL;
 396         accounting_deinit(hapd);
 397         rsn_preauth_iface_deinit(hapd);
 398         if (hapd->wpa_auth) {
 399                 wpa_deinit(hapd->wpa_auth);
 400                 hapd->wpa_auth = NULL;
 401
 402                 if (hostapd_set_privacy(hapd, 0)) {
 403                         wpa_printf(MSG_DEBUG, "Could not disable "
 404                                    "PrivacyInvoked for interface %s",
 405                                    hapd->conf->iface);
 406                 }
 407
 408                 if (hostapd_set_generic_elem(hapd, (u8 *) "", 0)) {
 409                         wpa_printf(MSG_DEBUG, "Could not remove generic "
 410                                    "information element from interface %s",
 411                                    hapd->conf->iface);
 412                 }
 413         }
 414         ieee802_1x_deinit(hapd);
 415         vlan_deinit(hapd);
 416         hostapd_acl_deinit(hapd);
 417         radius_client_deinit(hapd->radius);
 418         hapd->radius = NULL;
 419         radius_server_deinit(hapd->radius_srv);
 420         hapd->radius_srv = NULL;
 421
 422 #ifdef CONFIG_IEEE80211R
 423         l2_packet_deinit(hapd->l2);
 424 #endif /* CONFIG_IEEE80211R */
 425
 426         hostapd_deinit_wps(hapd);
 427
 428 #ifdef EAP_TLS_FUNCS
 429         if (hapd->ssl_ctx) {
 430                 tls_deinit(hapd->ssl_ctx);
 431                 hapd->ssl_ctx = NULL;
 432         }
 433 #endif /* EAP_TLS_FUNCS */
 434
 435 #ifdef EAP_SERVER
 436         if (hapd->eap_sim_db_priv) {
 437                 eap_sim_db_deinit(hapd->eap_sim_db_priv);
 438                 hapd->eap_sim_db_priv = NULL;
 439         }
 440 #endif /* EAP_SERVER */
 441
 442         if (hapd->interface_added &&
 443             hostapd_bss_remove(hapd, hapd->conf->iface)) {
 444                 wpa_printf(MSG_WARNING, "Failed to remove BSS interface %s",
 445                            hapd->conf->iface);
 446         }
 447
 448         os_free(hapd->probereq_cb);
 449         hapd->probereq_cb = NULL;
 450 }
 451
 452
 453 /**
 454  * hostapd_cleanup_iface_pre - Preliminary per-interface cleanup
 455  * @iface: Pointer to interface data
 456  *
 457  * This function is called before per-BSS data structures are deinitialized
 458  * with hostapd_cleanup().
 459  */
 460 static void hostapd_cleanup_iface_pre(struct hostapd_iface *iface)
 461 {
 462 }
 463
 464
 465 /**
 466  * hostapd_cleanup_iface - Complete per-interface cleanup
 467  * @iface: Pointer to interface data
 468  *
 469  * This function is called after per-BSS data structures are deinitialized
 470  * with hostapd_cleanup().
 471  */
 472 static void hostapd_cleanup_iface(struct hostapd_iface *iface)
 473 {
 474         hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
 475         iface->hw_features = NULL;
 476         os_free(iface->current_rates);
 477         iface->current_rates = NULL;
 478         ap_list_deinit(iface);
 479         hostapd_config_free(iface->conf);
 480         iface->conf = NULL;
 481
 482         os_free(iface->config_fname);
 483         os_free(iface->bss);
 484         os_free(iface);
 485 }
 486
 487
 488 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
 489 {
 490         int i;
 491
 492         hostapd_broadcast_wep_set(hapd);
 493
 494         if (hapd->conf->ssid.wep.default_len)
 495                 return 0;
 496
 497         for (i = 0; i < 4; i++) {
 498                 if (hapd->conf->ssid.wep.key[i] &&
 499                     hostapd_set_key(iface, hapd, WPA_ALG_WEP, NULL, i,
 500                                     i == hapd->conf->ssid.wep.idx, NULL, 0,
 501                                     hapd->conf->ssid.wep.key[i],
 502                                     hapd->conf->ssid.wep.len[i])) {
 503                         wpa_printf(MSG_WARNING, "Could not set WEP "
 504                                    "encryption.");
 505                         return -1;
 506                 }
 507                 if (hapd->conf->ssid.wep.key[i] &&
 508                     i == hapd->conf->ssid.wep.idx)
 509                         hostapd_set_privacy(hapd, 1);
 510         }
 511
 512         return 0;
 513 }
 514
 515
 516 static int hostapd_flush_old_stations(struct hostapd_data *hapd)
 517 {
 518         int ret = 0;
 519
 520         if (hostapd_drv_none(hapd))
 521                 return 0;
 522
 523         wpa_printf(MSG_DEBUG, "Flushing old station entries");
 524         if (hostapd_flush(hapd)) {
 525                 wpa_printf(MSG_WARNING, "Could not connect to kernel driver.");
 526                 ret = -1;
 527         }
 528         wpa_printf(MSG_DEBUG, "Deauthenticate all stations");
 529
 530         /* New Prism2.5/3 STA firmware versions seem to have issues with this
 531          * broadcast deauth frame. This gets the firmware in odd state where
 532          * nothing works correctly, so let's skip sending this for the hostap
 533          * driver. */
 534         if (hapd->driver && os_strcmp(hapd->driver->name, "hostap") != 0) {
 535                 u8 addr[ETH_ALEN];
 536                 os_memset(addr, 0xff, ETH_ALEN);
 537                 hostapd_sta_deauth(hapd, addr,
 538                                    WLAN_REASON_PREV_AUTH_NOT_VALID);
 539         }
 540
 541         return ret;
 542 }
 543
 544
 545 static void hostapd_wpa_auth_logger(void *ctx, const u8 *addr,
 546                                     logger_level level, const char *txt)
 547 {
 548 #ifndef CONFIG_NO_HOSTAPD_LOGGER
 549         struct hostapd_data *hapd = ctx;
 550         int hlevel;
 551
 552         switch (level) {
 553         case LOGGER_WARNING:
 554                 hlevel = HOSTAPD_LEVEL_WARNING;
 555                 break;
 556         case LOGGER_INFO:
 557                 hlevel = HOSTAPD_LEVEL_INFO;
 558                 break;
 559         case LOGGER_DEBUG:
 560         default:
 561                 hlevel = HOSTAPD_LEVEL_DEBUG;
 562                 break;
 563         }
 564
 565         hostapd_logger(hapd, addr, HOSTAPD_MODULE_WPA, hlevel, "%s", txt);
 566 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
 567 }
 568
 569
 570 static void hostapd_wpa_auth_disconnect(void *ctx, const u8 *addr,
 571                                         u16 reason)
 572 {
 573         struct hostapd_data *hapd = ctx;
 574         struct sta_info *sta;
 575
 576         wpa_printf(MSG_DEBUG, "%s: WPA authenticator requests disconnect: "
 577                    "STA " MACSTR " reason %d",
 578                    __func__, MAC2STR(addr), reason);
 579
 580         sta = ap_get_sta(hapd, addr);
 581         hostapd_sta_deauth(hapd, addr, reason);
 582         if (sta == NULL)
 583                 return;
 584         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_AUTHORIZED);
 585         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 586         eloop_register_timeout(0, 0, ap_handle_timer, hapd, sta);
 587         sta->timeout_next = STA_REMOVE;
 588 }
 589
 590
 591 static void hostapd_wpa_auth_mic_failure_report(void *ctx, const u8 *addr)
 592 {
 593         struct hostapd_data *hapd = ctx;
 594         michael_mic_failure(hapd, addr, 0);
 595 }
 596
 597
 598 static void hostapd_wpa_auth_set_eapol(void *ctx, const u8 *addr,
 599                                        wpa_eapol_variable var, int value)
 600 {
 601         struct hostapd_data *hapd = ctx;
 602         struct sta_info *sta = ap_get_sta(hapd, addr);
 603         if (sta == NULL)
 604                 return;
 605         switch (var) {
 606         case WPA_EAPOL_portEnabled:
 607                 ieee802_1x_notify_port_enabled(sta->eapol_sm, value);
 608                 break;
 609         case WPA_EAPOL_portValid:
 610                 ieee802_1x_notify_port_valid(sta->eapol_sm, value);
 611                 break;
 612         case WPA_EAPOL_authorized:
 613                 ieee802_1x_set_sta_authorized(hapd, sta, value);
 614                 break;
 615         case WPA_EAPOL_portControl_Auto:
 616                 if (sta->eapol_sm)
 617                         sta->eapol_sm->portControl = Auto;
 618                 break;
 619         case WPA_EAPOL_keyRun:
 620                 if (sta->eapol_sm)
 621                         sta->eapol_sm->keyRun = value ? TRUE : FALSE;
 622                 break;
 623         case WPA_EAPOL_keyAvailable:
 624                 if (sta->eapol_sm)
 625                         sta->eapol_sm->eap_if->eapKeyAvailable =
 626                                 value ? TRUE : FALSE;
 627                 break;
 628         case WPA_EAPOL_keyDone:
 629                 if (sta->eapol_sm)
 630                         sta->eapol_sm->keyDone = value ? TRUE : FALSE;
 631                 break;
 632         case WPA_EAPOL_inc_EapolFramesTx:
 633                 if (sta->eapol_sm)
 634                         sta->eapol_sm->dot1xAuthEapolFramesTx++;
 635                 break;
 636         }
 637 }
 638
 639
 640 static int hostapd_wpa_auth_get_eapol(void *ctx, const u8 *addr,
 641                                       wpa_eapol_variable var)
 642 {
 643         struct hostapd_data *hapd = ctx;
 644         struct sta_info *sta = ap_get_sta(hapd, addr);
 645         if (sta == NULL || sta->eapol_sm == NULL)
 646                 return -1;
 647         switch (var) {
 648         case WPA_EAPOL_keyRun:
 649                 return sta->eapol_sm->keyRun;
 650         case WPA_EAPOL_keyAvailable:
 651                 return sta->eapol_sm->eap_if->eapKeyAvailable;
 652         default:
 653                 return -1;
 654         }
 655 }
 656
 657
 658 static const u8 * hostapd_wpa_auth_get_psk(void *ctx, const u8 *addr,
 659                                            const u8 *prev_psk)
 660 {
 661         struct hostapd_data *hapd = ctx;
 662         return hostapd_get_psk(hapd->conf, addr, prev_psk);
 663 }
 664
 665
 666 static int hostapd_wpa_auth_get_msk(void *ctx, const u8 *addr, u8 *msk,
 667                                     size_t *len)
 668 {
 669         struct hostapd_data *hapd = ctx;
 670         const u8 *key;
 671         size_t keylen;
 672         struct sta_info *sta;
 673
 674         sta = ap_get_sta(hapd, addr);
 675         if (sta == NULL)
 676                 return -1;
 677
 678         key = ieee802_1x_get_key(sta->eapol_sm, &keylen);
 679         if (key == NULL)
 680                 return -1;
 681
 682         if (keylen > *len)
 683                 keylen = *len;
 684         os_memcpy(msk, key, keylen);
 685         *len = keylen;
 686
 687         return 0;
 688 }
 689
 690
 691 static int hostapd_wpa_auth_set_key(void *ctx, int vlan_id, wpa_alg alg,
 692                                     const u8 *addr, int idx, u8 *key,
 693                                     size_t key_len)
 694 {
 695         struct hostapd_data *hapd = ctx;
 696         const char *ifname = hapd->conf->iface;
 697
 698         if (vlan_id > 0) {
 699                 ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
 700                 if (ifname == NULL)
 701                         return -1;
 702         }
 703
 704         return hostapd_set_key(ifname, hapd, alg, addr, idx, 1, NULL, 0,
 705                                key, key_len);
 706 }
 707
 708
 709 static int hostapd_wpa_auth_get_seqnum(void *ctx, const u8 *addr, int idx,
 710                                        u8 *seq)
 711 {
 712         struct hostapd_data *hapd = ctx;
 713         return hostapd_get_seqnum(hapd->conf->iface, hapd, addr, idx, seq);
 714 }
 715
 716
 717 static int hostapd_wpa_auth_get_seqnum_igtk(void *ctx, const u8 *addr, int idx,
 718                                             u8 *seq)
 719 {
 720         struct hostapd_data *hapd = ctx;
 721         return hostapd_get_seqnum_igtk(hapd->conf->iface, hapd, addr, idx,
 722                                        seq);
 723 }
 724
 725
 726 static int hostapd_wpa_auth_send_eapol(void *ctx, const u8 *addr,
 727                                        const u8 *data, size_t data_len,
 728                                        int encrypt)
 729 {
 730         struct hostapd_data *hapd = ctx;
 731         return hostapd_send_eapol(hapd, addr, data, data_len, encrypt);
 732 }
 733
 734
 735 static int hostapd_wpa_auth_for_each_sta(
 736         void *ctx, int (*cb)(struct wpa_state_machine *sm, void *ctx),
 737         void *cb_ctx)
 738 {
 739         struct hostapd_data *hapd = ctx;
 740         struct sta_info *sta;
 741
 742         for (sta = hapd->sta_list; sta; sta = sta->next) {
 743                 if (sta->wpa_sm && cb(sta->wpa_sm, cb_ctx))
 744                         return 1;
 745         }
 746         return 0;
 747 }
 748
 749
 750 struct wpa_auth_iface_iter_data {
 751         int (*cb)(struct wpa_authenticator *sm, void *ctx);
 752         void *cb_ctx;
 753 };
 754
 755 static int wpa_auth_iface_iter(struct hostapd_iface *iface, void *ctx)
 756 {
 757         struct wpa_auth_iface_iter_data *data = ctx;
 758         size_t i;
 759         for (i = 0; i < iface->num_bss; i++) {
 760                 if (data->cb(iface->bss[i]->wpa_auth, data->cb_ctx))
 761                         return 1;
 762         }
 763         return 0;
 764 }
 765
 766
 767 static int hostapd_wpa_auth_for_each_auth(
 768         void *ctx, int (*cb)(struct wpa_authenticator *sm, void *ctx),
 769         void *cb_ctx)
 770 {
 771         struct wpa_auth_iface_iter_data data;
 772         data.cb = cb;
 773         data.cb_ctx = cb_ctx;
 774         return hostapd_for_each_interface(wpa_auth_iface_iter, &data);
 775 }
 776
 777
 778 static int hostapd_wpa_auth_send_ether(void *ctx, const u8 *dst, u16 proto,
 779                                        const u8 *data, size_t data_len)
 780 {
 781         struct hostapd_data *hapd = ctx;
 782
 783         if (hapd->driver && hapd->driver->send_ether)
 784                 return hapd->driver->send_ether(hapd->drv_priv, dst,
 785                                                 hapd->own_addr, proto,
 786                                                 data, data_len);
 787         if (hapd->l2 == NULL)
 788                 return -1;
 789         return l2_packet_send(hapd->l2, dst, proto, data, data_len);
 790 }
 791
 792
 793 #ifdef CONFIG_IEEE80211R
 794
 795 static int hostapd_wpa_auth_send_ft_action(void *ctx, const u8 *dst,
 796                                            const u8 *data, size_t data_len)
 797 {
 798         struct hostapd_data *hapd = ctx;
 799         int res;
 800         struct ieee80211_mgmt *m;
 801         size_t mlen;
 802         struct sta_info *sta;
 803
 804         sta = ap_get_sta(hapd, dst);
 805         if (sta == NULL || sta->wpa_sm == NULL)
 806                 return -1;
 807
 808         m = os_zalloc(sizeof(*m) + data_len);
 809         if (m == NULL)
 810                 return -1;
 811         mlen = ((u8 *) &m->u - (u8 *) m) + data_len;
 812         m->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 813                                         WLAN_FC_STYPE_ACTION);
 814         os_memcpy(m->da, dst, ETH_ALEN);
 815         os_memcpy(m->sa, hapd->own_addr, ETH_ALEN);
 816         os_memcpy(m->bssid, hapd->own_addr, ETH_ALEN);
 817         os_memcpy(&m->u, data, data_len);
 818
 819         res = hostapd_send_mgmt_frame(hapd, (u8 *) m, mlen);
 820         os_free(m);
 821         return res;
 822 }
 823
 824
 825 static struct wpa_state_machine *
 826 hostapd_wpa_auth_add_sta(void *ctx, const u8 *sta_addr)
 827 {
 828         struct hostapd_data *hapd = ctx;
 829         struct sta_info *sta;
 830
 831         sta = ap_sta_add(hapd, sta_addr);
 832         if (sta == NULL)
 833                 return NULL;
 834         if (sta->wpa_sm)
 835                 return sta->wpa_sm;
 836
 837         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr);
 838         if (sta->wpa_sm == NULL) {
 839                 ap_free_sta(hapd, sta);
 840                 return NULL;
 841         }
 842         sta->auth_alg = WLAN_AUTH_FT;
 843
 844         return sta->wpa_sm;
 845 }
 846
 847
 848 static void hostapd_rrb_receive(void *ctx, const u8 *src_addr, const u8 *buf,
 849                                 size_t len)
 850 {
 851         struct hostapd_data *hapd = ctx;
 852         wpa_ft_rrb_rx(hapd->wpa_auth, src_addr, buf, len);
 853 }
 854
 855 #endif /* CONFIG_IEEE80211R */
 856
 857
 858 /**
 859  * hostapd_validate_bssid_configuration - Validate BSSID configuration
 860  * @iface: Pointer to interface data
 861  * Returns: 0 on success, -1 on failure
 862  *
 863  * This function is used to validate that the configured BSSIDs are valid.
 864  */
 865 static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
 866 {
 867         u8 mask[ETH_ALEN] = { 0 };
 868         struct hostapd_data *hapd = iface->bss[0];
 869         unsigned int i = iface->conf->num_bss, bits = 0, j;
 870         int res;
 871         int auto_addr = 0;
 872
 873         if (hostapd_drv_none(hapd))
 874                 return 0;
 875
 876         /* Generate BSSID mask that is large enough to cover the BSSIDs. */
 877
 878         /* Determine the bits necessary to cover the number of BSSIDs. */
 879         for (i--; i; i >>= 1)
 880                 bits++;
 881
 882         /* Determine the bits necessary to any configured BSSIDs,
 883            if they are higher than the number of BSSIDs. */
 884         for (j = 0; j < iface->conf->num_bss; j++) {
 885                 if (hostapd_mac_comp_empty(iface->conf->bss[j].bssid) == 0) {
 886                         if (j)
 887                                 auto_addr++;
 888                         continue;
 889                 }
 890
 891                 for (i = 0; i < ETH_ALEN; i++) {
 892                         mask[i] |=
 893                                 iface->conf->bss[j].bssid[i] ^
 894                                 hapd->own_addr[i];
 895                 }
 896         }
 897
 898         if (!auto_addr)
 899                 goto skip_mask_ext;
 900
 901         for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
 902                 ;
 903         j = 0;
 904         if (i < ETH_ALEN) {
 905                 j = (5 - i) * 8;
 906
 907                 while (mask[i] != 0) {
 908                         mask[i] >>= 1;
 909                         j++;
 910                 }
 911         }
 912
 913         if (bits < j)
 914                 bits = j;
 915
 916         if (bits > 40) {
 917                 wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)",
 918                            bits);
 919                 return -1;
 920         }
 921
 922         os_memset(mask, 0xff, ETH_ALEN);
 923         j = bits / 8;
 924         for (i = 5; i > 5 - j; i--)
 925                 mask[i] = 0;
 926         j = bits % 8;
 927         while (j--)
 928                 mask[i] <<= 1;
 929
 930 skip_mask_ext:
 931         wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
 932                    (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
 933
 934         res = hostapd_valid_bss_mask(hapd, hapd->own_addr, mask);
 935         if (res == 0)
 936                 return 0;
 937
 938         if (res < 0) {
 939                 wpa_printf(MSG_ERROR, "Driver did not accept BSSID mask "
 940                            MACSTR " for start address " MACSTR ".",
 941                            MAC2STR(mask), MAC2STR(hapd->own_addr));
 942                 return -1;
 943         }
 944
 945         if (!auto_addr)
 946                 return 0;
 947
 948         for (i = 0; i < ETH_ALEN; i++) {
 949                 if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
 950                         wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR
 951                                    " for start address " MACSTR ".",
 952                                    MAC2STR(mask), MAC2STR(hapd->own_addr));
 953                         wpa_printf(MSG_ERROR, "Start address must be the "
 954                                    "first address in the block (i.e., addr "
 955                                    "AND mask == addr).");
 956                         return -1;
 957                 }
 958         }
 959
 960         return 0;
 961 }
 962
 963
 964 static int mac_in_conf(struct hostapd_config *conf, const void *a)
 965 {
 966         size_t i;
 967
 968         for (i = 0; i < conf->num_bss; i++) {
 969                 if (hostapd_mac_comp(conf->bss[i].bssid, a) == 0) {
 970                         return 1;
 971                 }
 972         }
 973
 974         return 0;
 975 }
 976
 977
 978 static int hostapd_setup_wpa(struct hostapd_data *hapd)
 979 {
 980         struct wpa_auth_config _conf;
 981         struct wpa_auth_callbacks cb;
 982         const u8 *wpa_ie;
 983         size_t wpa_ie_len;
 984
 985         hostapd_wpa_auth_conf(hapd->conf, &_conf);
 986         os_memset(&cb, 0, sizeof(cb));
 987         cb.ctx = hapd;
 988         cb.logger = hostapd_wpa_auth_logger;
 989         cb.disconnect = hostapd_wpa_auth_disconnect;
 990         cb.mic_failure_report = hostapd_wpa_auth_mic_failure_report;
 991         cb.set_eapol = hostapd_wpa_auth_set_eapol;
 992         cb.get_eapol = hostapd_wpa_auth_get_eapol;
 993         cb.get_psk = hostapd_wpa_auth_get_psk;
 994         cb.get_msk = hostapd_wpa_auth_get_msk;
 995         cb.set_key = hostapd_wpa_auth_set_key;
 996         cb.get_seqnum = hostapd_wpa_auth_get_seqnum;
 997         cb.get_seqnum_igtk = hostapd_wpa_auth_get_seqnum_igtk;
 998         cb.send_eapol = hostapd_wpa_auth_send_eapol;
 999         cb.for_each_sta = hostapd_wpa_auth_for_each_sta;
1000         cb.for_each_auth = hostapd_wpa_auth_for_each_auth;
1001         cb.send_ether = hostapd_wpa_auth_send_ether;
1002 #ifdef CONFIG_IEEE80211R
1003         cb.send_ft_action = hostapd_wpa_auth_send_ft_action;
1004         cb.add_sta = hostapd_wpa_auth_add_sta;
1005 #endif /* CONFIG_IEEE80211R */
1006         hapd->wpa_auth = wpa_init(hapd->own_addr, &_conf, &cb);
1007         if (hapd->wpa_auth == NULL) {
1008                 wpa_printf(MSG_ERROR, "WPA initialization failed.");
1009                 return -1;
1010         }
1011
1012         if (hostapd_set_privacy(hapd, 1)) {
1013                 wpa_printf(MSG_ERROR, "Could not set PrivacyInvoked "
1014                            "for interface %s", hapd->conf->iface);
1015                 return -1;
1016         }
1017
1018         wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
1019         if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len)) {
1020                 wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
1021                            "the kernel driver.");
1022                 return -1;
1023         }
1024
1025         if (rsn_preauth_iface_init(hapd)) {
1026                 wpa_printf(MSG_ERROR, "Initialization of RSN "
1027                            "pre-authentication failed.");
1028                 return -1;
1029         }
1030
1031         return 0;
1032
1033 }
1034
1035
1036 static int hostapd_setup_radius_srv(struct hostapd_data *hapd,
1037                                     struct hostapd_bss_config *conf)
1038 {
1039         struct radius_server_conf srv;
1040         os_memset(&srv, 0, sizeof(srv));
1041         srv.client_file = conf->radius_server_clients;
1042         srv.auth_port = conf->radius_server_auth_port;
1043         srv.conf_ctx = conf;
1044         srv.eap_sim_db_priv = hapd->eap_sim_db_priv;
1045         srv.ssl_ctx = hapd->ssl_ctx;
1046         srv.pac_opaque_encr_key = conf->pac_opaque_encr_key;
1047         srv.eap_fast_a_id = conf->eap_fast_a_id;
1048         srv.eap_fast_a_id_len = conf->eap_fast_a_id_len;
1049         srv.eap_fast_a_id_info = conf->eap_fast_a_id_info;
1050         srv.eap_fast_prov = conf->eap_fast_prov;
1051         srv.pac_key_lifetime = conf->pac_key_lifetime;
1052         srv.pac_key_refresh_time = conf->pac_key_refresh_time;
1053         srv.eap_sim_aka_result_ind = conf->eap_sim_aka_result_ind;
1054         srv.tnc = conf->tnc;
1055         srv.wps = hapd->wps;
1056         srv.ipv6 = conf->radius_server_ipv6;
1057         srv.get_eap_user = hostapd_radius_get_eap_user;
1058         srv.eap_req_id_text = conf->eap_req_id_text;
1059         srv.eap_req_id_text_len = conf->eap_req_id_text_len;
1060
1061         hapd->radius_srv = radius_server_init(&srv);
1062         if (hapd->radius_srv == NULL) {
1063                 wpa_printf(MSG_ERROR, "RADIUS server initialization failed.");
1064                 return -1;
1065         }
1066
1067         return 0;
1068 }
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
1075  *
1076  * This function is used to initialize all per-BSS data structures and
1077  * resources. This gets called in a loop for each BSS when an interface is
1078  * initialized. Most of the modules that are initialized here will be
1079  * deinitialized in hostapd_cleanup().
1080  */
1081 static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
1082 {
1083         struct hostapd_bss_config *conf = hapd->conf;
1084         u8 ssid[HOSTAPD_MAX_SSID_LEN + 1];
1085         int ssid_len, set_ssid;
1086
1087         if (!first) {
1088                 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0) {
1089                         /* Allocate the next available BSSID. */
1090                         do {
1091                                 inc_byte_array(hapd->own_addr, ETH_ALEN);
1092                         } while (mac_in_conf(hapd->iconf, hapd->own_addr));
1093                 } else {
1094                         /* Allocate the configured BSSID. */
1095                         os_memcpy(hapd->own_addr, hapd->conf->bssid, ETH_ALEN);
1096
1097                         if (hostapd_mac_comp(hapd->own_addr,
1098                                              hapd->iface->bss[0]->own_addr) ==
1099                             0) {
1100                                 wpa_printf(MSG_ERROR, "BSS '%s' may not have "
1101                                            "BSSID set to the MAC address of "
1102                                            "the radio", hapd->conf->iface);
1103                                 return -1;
1104                         }
1105                 }
1106
1107                 hapd->interface_added = 1;
1108                 if (hostapd_bss_add(hapd->iface->bss[0], hapd->conf->iface,
1109                                     hapd->own_addr)) {
1110                         wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
1111                                    MACSTR ")", MAC2STR(hapd->own_addr));
1112                         return -1;
1113                 }
1114         }
1115
1116         hostapd_flush_old_stations(hapd);
1117         hostapd_set_privacy(hapd, 0);
1118
1119         hostapd_broadcast_wep_clear(hapd);
1120         if (hostapd_setup_encryption(hapd->conf->iface, hapd))
1121                 return -1;
1122
1123         /*
1124          * Fetch the SSID from the system and use it or,
1125          * if one was specified in the config file, verify they
1126          * match.
1127          */
1128         ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
1129         if (ssid_len < 0) {
1130                 wpa_printf(MSG_ERROR, "Could not read SSID from system");
1131                 return -1;
1132         }
1133         if (conf->ssid.ssid_set) {
1134                 /*
1135                  * If SSID is specified in the config file and it differs
1136                  * from what is being used then force installation of the
1137                  * new SSID.
1138                  */
1139                 set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
1140                             os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
1141         } else {
1142                 /*
1143                  * No SSID in the config file; just use the one we got
1144                  * from the system.
1145                  */
1146                 set_ssid = 0;
1147                 conf->ssid.ssid_len = ssid_len;
1148                 os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
1149                 conf->ssid.ssid[conf->ssid.ssid_len] = '\0';
1150         }
1151
1152         if (!hostapd_drv_none(hapd)) {
1153                 wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR
1154                            " and ssid '%s'",
1155                            hapd->conf->iface, MAC2STR(hapd->own_addr),
1156                            hapd->conf->ssid.ssid);
1157         }
1158
1159         if (hostapd_setup_wpa_psk(conf)) {
1160                 wpa_printf(MSG_ERROR, "WPA-PSK setup failed.");
1161                 return -1;
1162         }
1163
1164         /* Set SSID for the kernel driver (to be used in beacon and probe
1165          * response frames) */
1166         if (set_ssid && hostapd_set_ssid(hapd, (u8 *) conf->ssid.ssid,
1167                                          conf->ssid.ssid_len)) {
1168                 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
1169                 return -1;
1170         }
1171
1172         if (wpa_debug_level == MSG_MSGDUMP)
1173                 conf->radius->msg_dumps = 1;
1174         hapd->radius = radius_client_init(hapd, conf->radius);
1175         if (hapd->radius == NULL) {
1176                 wpa_printf(MSG_ERROR, "RADIUS client initialization failed.");
1177                 return -1;
1178         }
1179
1180         if (hostapd_acl_init(hapd)) {
1181                 wpa_printf(MSG_ERROR, "ACL initialization failed.");
1182                 return -1;
1183         }
1184         if (hostapd_init_wps(hapd, conf))
1185                 return -1;
1186
1187         if (ieee802_1x_init(hapd)) {
1188                 wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed.");
1189                 return -1;
1190         }
1191
1192         if (hapd->conf->wpa && hostapd_setup_wpa(hapd))
1193                 return -1;
1194
1195         if (accounting_init(hapd)) {
1196                 wpa_printf(MSG_ERROR, "Accounting initialization failed.");
1197                 return -1;
1198         }
1199
1200         if (hapd->conf->ieee802_11f &&
1201             (hapd->iapp = iapp_init(hapd, hapd->conf->iapp_iface)) == NULL) {
1202                 wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization "
1203                            "failed.");
1204                 return -1;
1205         }
1206
1207         if (hostapd_ctrl_iface_init(hapd)) {
1208                 wpa_printf(MSG_ERROR, "Failed to setup control interface");
1209                 return -1;
1210         }
1211
1212         if (!hostapd_drv_none(hapd) && vlan_init(hapd)) {
1213                 wpa_printf(MSG_ERROR, "VLAN initialization failed.");
1214                 return -1;
1215         }
1216
1217 #ifdef CONFIG_IEEE80211R
1218         if (!hostapd_drv_none(hapd)) {
1219                 hapd->l2 = l2_packet_init(hapd->conf->iface, NULL, ETH_P_RRB,
1220                                           hostapd_rrb_receive, hapd, 0);
1221                 if (hapd->l2 == NULL &&
1222                     (hapd->driver == NULL ||
1223                      hapd->driver->send_ether == NULL)) {
1224                         wpa_printf(MSG_ERROR, "Failed to open l2_packet "
1225                                    "interface");
1226                         return -1;
1227                 }
1228         }
1229 #endif /* CONFIG_IEEE80211R */
1230
1231         ieee802_11_set_beacon(hapd);
1232
1233         if (conf->radius_server_clients &&
1234             hostapd_setup_radius_srv(hapd, conf))
1235                 return -1;
1236
1237         return 0;
1238 }
1239
1240
1241 static void hostapd_tx_queue_params(struct hostapd_iface *iface)
1242 {
1243         struct hostapd_data *hapd = iface->bss[0];
1244         int i;
1245         struct hostapd_tx_queue_params *p;
1246
1247         for (i = 0; i < NUM_TX_QUEUES; i++) {
1248                 p = &iface->conf->tx_queue[i];
1249
1250                 if (!p->configured)
1251                         continue;
1252
1253                 if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin,
1254                                                 p->cwmax, p->burst)) {
1255                         wpa_printf(MSG_DEBUG, "Failed to set TX queue "
1256                                    "parameters for queue %d.", i);
1257                         /* Continue anyway */
1258                 }
1259         }
1260 }
1261
1262
1263 static int hostapd_radius_get_eap_user(void *ctx, const u8 *identity,
1264                                        size_t identity_len, int phase2,
1265                                        struct eap_user *user)
1266 {
1267         const struct hostapd_eap_user *eap_user;
1268         int i, count;
1269
1270         eap_user = hostapd_get_eap_user(ctx, identity, identity_len, phase2);
1271         if (eap_user == NULL)
1272                 return -1;
1273
1274         if (user == NULL)
1275                 return 0;
1276
1277         os_memset(user, 0, sizeof(*user));
1278         count = EAP_USER_MAX_METHODS;
1279         if (count > EAP_MAX_METHODS)
1280                 count = EAP_MAX_METHODS;
1281         for (i = 0; i < count; i++) {
1282                 user->methods[i].vendor = eap_user->methods[i].vendor;
1283                 user->methods[i].method = eap_user->methods[i].method;
1284         }
1285
1286         if (eap_user->password) {
1287                 user->password = os_malloc(eap_user->password_len);
1288                 if (user->password == NULL)
1289                         return -1;
1290                 os_memcpy(user->password, eap_user->password,
1291                           eap_user->password_len);
1292                 user->password_len = eap_user->password_len;
1293                 user->password_hash = eap_user->password_hash;
1294         }
1295         user->force_version = eap_user->force_version;
1296         user->ttls_auth = eap_user->ttls_auth;
1297
1298         return 0;
1299 }
1300
1301
1302 static int setup_interface(struct hostapd_iface *iface)
1303 {
1304         struct hostapd_data *hapd = iface->bss[0];
1305         struct hostapd_bss_config *conf = hapd->conf;
1306         size_t i;
1307         char country[4];
1308         u8 *b = conf->bssid;
1309
1310         /*
1311          * Initialize the driver interface and make sure that all BSSes get
1312          * configured with a pointer to this driver interface.
1313          */
1314         if (!(b[0] | b[1] | b[2] | b[3] | b[4] | b[5]))
1315                 b = NULL;
1316         hapd->drv_priv = hostapd_driver_init(hapd, b);
1317
1318         if (hapd->drv_priv == NULL) {
1319                 wpa_printf(MSG_ERROR, "%s driver initialization failed.",
1320                            hapd->driver ? hapd->driver->name : "Unknown");
1321                 hapd->driver = NULL;
1322                 return -1;
1323         }
1324         for (i = 0; i < iface->num_bss; i++) {
1325                 iface->bss[i]->driver = hapd->driver;
1326                 iface->bss[i]->drv_priv = hapd->drv_priv;
1327         }
1328
1329         if (hostapd_validate_bssid_configuration(iface))
1330                 return -1;
1331
1332         if (hapd->iconf->country[0] && hapd->iconf->country[1]) {
1333                 os_memcpy(country, hapd->iconf->country, 3);
1334                 country[3] = '\0';
1335                 if (hostapd_set_country(hapd, country) < 0) {
1336                         wpa_printf(MSG_ERROR, "Failed to set country code");
1337                         return -1;
1338                 }
1339         }
1340
1341         if (hapd->iconf->bridge_packets != INTERNAL_BRIDGE_DO_NOT_CONTROL &&
1342             hostapd_set_internal_bridge(hapd, hapd->iconf->bridge_packets)) {
1343                 wpa_printf(MSG_ERROR, "Failed to set bridge_packets for "
1344                            "kernel driver");
1345                 return -1;
1346         }
1347
1348         if (hostapd_get_hw_features(iface)) {
1349                 /* Not all drivers support this yet, so continue without hw
1350                  * feature data. */
1351         } else {
1352                 int ret = hostapd_select_hw_mode(iface);
1353                 if (ret < 0) {
1354                         wpa_printf(MSG_ERROR, "Could not select hw_mode and "
1355                                    "channel. (%d)", ret);
1356                         return -1;
1357                 }
1358                 ret = hostapd_check_ht_capab(iface);
1359                 if (ret < 0)
1360                         return -1;
1361                 if (ret == 1) {
1362                         wpa_printf(MSG_DEBUG, "Interface initialization will "
1363                                    "be completed in a callback");
1364                         return 0;
1365                 }
1366         }
1367         return hostapd_setup_interface_complete(iface, 0);
1368 }
1369
1370
1371 int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err)
1372 {
1373         struct hostapd_data *hapd = iface->bss[0];
1374         int freq;
1375         size_t j;
1376         u8 *prev_addr;
1377
1378         if (err) {
1379                 wpa_printf(MSG_ERROR, "Interface initialization failed");
1380                 eloop_terminate();
1381                 return -1;
1382         }
1383
1384         wpa_printf(MSG_DEBUG, "Completing interface initialization");
1385         if (hapd->iconf->channel) {
1386                 freq = hostapd_hw_get_freq(hapd, hapd->iconf->channel);
1387                 wpa_printf(MSG_DEBUG, "Mode: %s  Channel: %d  "
1388                            "Frequency: %d MHz",
1389                            hostapd_hw_mode_txt(hapd->iconf->hw_mode),
1390                            hapd->iconf->channel, freq);
1391
1392                 if (hostapd_set_freq(hapd, hapd->iconf->hw_mode, freq,
1393                                      hapd->iconf->channel,
1394                                      hapd->iconf->ieee80211n,
1395                                      hapd->iconf->secondary_channel)) {
1396                         wpa_printf(MSG_ERROR, "Could not set channel for "
1397                                    "kernel driver");
1398                         return -1;
1399                 }
1400         }
1401
1402         if (hapd->iconf->rts_threshold > -1 &&
1403             hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) {
1404                 wpa_printf(MSG_ERROR, "Could not set RTS threshold for "
1405                            "kernel driver");
1406                 return -1;
1407         }
1408
1409         if (hapd->iconf->fragm_threshold > -1 &&
1410             hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) {
1411                 wpa_printf(MSG_ERROR, "Could not set fragmentation threshold "
1412                            "for kernel driver");
1413                 return -1;
1414         }
1415
1416         prev_addr = hapd->own_addr;
1417
1418         for (j = 0; j < iface->num_bss; j++) {
1419                 hapd = iface->bss[j];
1420                 if (j)
1421                         os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
1422                 if (hostapd_setup_bss(hapd, j == 0))
1423                         return -1;
1424                 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0)
1425                         prev_addr = hapd->own_addr;
1426         }
1427
1428         hostapd_tx_queue_params(iface);
1429
1430         ap_list_init(iface);
1431
1432         if (hostapd_driver_commit(hapd) < 0) {
1433                 wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
1434                            "configuration", __func__);
1435                 return -1;
1436         }
1437
1438         wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
1439                    iface->bss[0]->conf->iface);
1440
1441         return 0;
1442 }
1443
1444
1445 /**
1446  * hostapd_setup_interface - Setup of an interface
1447  * @iface: Pointer to interface data.
1448  * Returns: 0 on success, -1 on failure
1449  *
1450  * Initializes the driver interface, validates the configuration,
1451  * and sets driver parameters based on the configuration.
1452  * Flushes old stations, sets the channel, encryption,
1453  * beacons, and WDS links based on the configuration.
1454  */
1455 int hostapd_setup_interface(struct hostapd_iface *iface)
1456 {
1457         int ret;
1458
1459         ret = setup_interface(iface);
1460         if (ret) {
1461                 wpa_printf(MSG_DEBUG, "%s: Unable to setup interface.",
1462                            iface->bss[0]->conf->iface);
1463                 eloop_terminate();
1464                 return -1;
1465         }
1466
1467         return 0;
1468 }
1469
1470
1471 /**
1472  * hostapd_alloc_bss_data - Allocate and initialize per-BSS data
1473  * @hapd_iface: Pointer to interface data
1474  * @conf: Pointer to per-interface configuration
1475  * @bss: Pointer to per-BSS configuration for this BSS
1476  * Returns: Pointer to allocated BSS data
1477  *
1478  * This function is used to allocate per-BSS data structure. This data will be
1479  * freed after hostapd_cleanup() is called for it during interface
1480  * deinitialization.
1481  */
1482 struct hostapd_data *
1483 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
1484                        struct hostapd_config *conf,
1485                        struct hostapd_bss_config *bss)
1486 {
1487         struct hostapd_data *hapd;
1488
1489         hapd = os_zalloc(sizeof(*hapd));
1490         if (hapd == NULL)
1491                 return NULL;
1492
1493         hapd->iconf = conf;
1494         hapd->conf = bss;
1495         hapd->iface = hapd_iface;
1496
1497 #ifdef EAP_TLS_FUNCS
1498         if (hapd->conf->eap_server &&
1499             (hapd->conf->ca_cert || hapd->conf->server_cert ||
1500              hapd->conf->dh_file)) {
1501                 struct tls_connection_params params;
1502
1503                 hapd->ssl_ctx = tls_init(NULL);
1504                 if (hapd->ssl_ctx == NULL) {
1505                         wpa_printf(MSG_ERROR, "Failed to initialize TLS");
1506                         goto fail;
1507                 }
1508
1509                 os_memset(&params, 0, sizeof(params));
1510                 params.ca_cert = hapd->conf->ca_cert;
1511                 params.client_cert = hapd->conf->server_cert;
1512                 params.private_key = hapd->conf->private_key;
1513                 params.private_key_passwd = hapd->conf->private_key_passwd;
1514                 params.dh_file = hapd->conf->dh_file;
1515
1516                 if (tls_global_set_params(hapd->ssl_ctx, &params)) {
1517                         wpa_printf(MSG_ERROR, "Failed to set TLS parameters");
1518                         goto fail;
1519                 }
1520
1521                 if (tls_global_set_verify(hapd->ssl_ctx,
1522                                           hapd->conf->check_crl)) {
1523                         wpa_printf(MSG_ERROR, "Failed to enable check_crl");
1524                         goto fail;
1525                 }
1526         }
1527 #endif /* EAP_TLS_FUNCS */
1528
1529 #ifdef EAP_SERVER
1530         if (hapd->conf->eap_sim_db) {
1531                 hapd->eap_sim_db_priv =
1532                         eap_sim_db_init(hapd->conf->eap_sim_db,
1533                                         hostapd_sim_db_cb, hapd);
1534                 if (hapd->eap_sim_db_priv == NULL) {
1535                         wpa_printf(MSG_ERROR, "Failed to initialize EAP-SIM "
1536                                    "database interface");
1537                         goto fail;
1538                 }
1539         }
1540 #endif /* EAP_SERVER */
1541
1542         hapd->driver = hapd->iconf->driver;
1543
1544         return hapd;
1545
1546 #if defined(EAP_TLS_FUNCS) || defined(EAP_SERVER)
1547 fail:
1548 #endif
1549         /* TODO: cleanup allocated resources(?) */
1550         os_free(hapd);
1551         return NULL;
1552 }
1553
1554
1555 void hostapd_interface_deinit(struct hostapd_iface *iface)
1556 {
1557         size_t j;
1558
1559         if (iface == NULL)
1560                 return;
1561
1562         hostapd_cleanup_iface_pre(iface);
1563         for (j = 0; j < iface->num_bss; j++) {
1564                 struct hostapd_data *hapd = iface->bss[j];
1565                 hostapd_free_stas(hapd);
1566                 hostapd_flush_old_stations(hapd);
1567                 hostapd_cleanup(hapd);
1568                 if (j == iface->num_bss - 1 && hapd->driver)
1569                         hostapd_driver_deinit(hapd);
1570         }
1571         for (j = 0; j < iface->num_bss; j++)
1572                 os_free(iface->bss[j]);
1573         hostapd_cleanup_iface(iface);
1574 }
1575
1576
1577 int hostapd_register_probereq_cb(struct hostapd_data *hapd,
1578                                  void (*cb)(void *ctx, const u8 *sa,
1579                                             const u8 *ie, size_t ie_len),
1580                                  void *ctx)
1581 {
1582         struct hostapd_probereq_cb *n;
1583
1584         n = os_realloc(hapd->probereq_cb, (hapd->num_probereq_cb + 1) *
1585                        sizeof(struct hostapd_probereq_cb));
1586         if (n == NULL)
1587                 return -1;
1588
1589         hapd->probereq_cb = n;
1590         n = &hapd->probereq_cb[hapd->num_probereq_cb];
1591         hapd->num_probereq_cb++;
1592
1593         n->cb = cb;
1594         n->ctx = ctx;
1595
1596         return 0;
1597 }