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 "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 "version.h"
  41 #include "l2_packet/l2_packet.h"
  42 #include "wps_hostapd.h"
  43 #include "tkip_countermeasures.h"
  44
  45
  46 static int hostapd_radius_get_eap_user(void *ctx, const u8 *identity,
  47                                        size_t identity_len, int phase2,
  48                                        struct eap_user *user);
  49 static int hostapd_flush_old_stations(struct hostapd_data *hapd);
  50 static int hostapd_setup_wpa(struct hostapd_data *hapd);
  51 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd);
  52
  53 extern int wpa_debug_level;
  54
  55
  56 #ifdef EAP_SERVER
  57 static int hostapd_sim_db_cb_sta(struct hostapd_data *hapd,
  58                                  struct sta_info *sta, void *ctx)
  59 {
  60         if (eapol_auth_eap_pending_cb(sta->eapol_sm, ctx) == 0)
  61                 return 1;
  62         return 0;
  63 }
  64
  65
  66 static void hostapd_sim_db_cb(void *ctx, void *session_ctx)
  67 {
  68         struct hostapd_data *hapd = ctx;
  69         if (ap_for_each_sta(hapd, hostapd_sim_db_cb_sta, session_ctx) == 0)
  70                 radius_server_eap_pending_cb(hapd->radius_srv, session_ctx);
  71 }
  72 #endif /* EAP_SERVER */
  73
  74
  75 static void hostapd_wpa_auth_conf(struct hostapd_bss_config *conf,
  76                                   struct wpa_auth_config *wconf)
  77 {
  78         wconf->wpa = conf->wpa;
  79         wconf->wpa_key_mgmt = conf->wpa_key_mgmt;
  80         wconf->wpa_pairwise = conf->wpa_pairwise;
  81         wconf->wpa_group = conf->wpa_group;
  82         wconf->wpa_group_rekey = conf->wpa_group_rekey;
  83         wconf->wpa_strict_rekey = conf->wpa_strict_rekey;
  84         wconf->wpa_gmk_rekey = conf->wpa_gmk_rekey;
  85         wconf->wpa_ptk_rekey = conf->wpa_ptk_rekey;
  86         wconf->rsn_pairwise = conf->rsn_pairwise;
  87         wconf->rsn_preauth = conf->rsn_preauth;
  88         wconf->eapol_version = conf->eapol_version;
  89         wconf->peerkey = conf->peerkey;
  90         wconf->wmm_enabled = conf->wmm_enabled;
  91         wconf->okc = conf->okc;
  92 #ifdef CONFIG_IEEE80211W
  93         wconf->ieee80211w = conf->ieee80211w;
  94 #endif /* CONFIG_IEEE80211W */
  95 #ifdef CONFIG_IEEE80211R
  96         wconf->ssid_len = conf->ssid.ssid_len;
  97         if (wconf->ssid_len > SSID_LEN)
  98                 wconf->ssid_len = SSID_LEN;
  99         os_memcpy(wconf->ssid, conf->ssid.ssid, wconf->ssid_len);
 100         os_memcpy(wconf->mobility_domain, conf->mobility_domain,
 101                   MOBILITY_DOMAIN_ID_LEN);
 102         if (conf->nas_identifier &&
 103             os_strlen(conf->nas_identifier) <= FT_R0KH_ID_MAX_LEN) {
 104                 wconf->r0_key_holder_len = os_strlen(conf->nas_identifier);
 105                 os_memcpy(wconf->r0_key_holder, conf->nas_identifier,
 106                           wconf->r0_key_holder_len);
 107         }
 108         os_memcpy(wconf->r1_key_holder, conf->r1_key_holder, FT_R1KH_ID_LEN);
 109         wconf->r0_key_lifetime = conf->r0_key_lifetime;
 110         wconf->reassociation_deadline = conf->reassociation_deadline;
 111         wconf->r0kh_list = conf->r0kh_list;
 112         wconf->r1kh_list = conf->r1kh_list;
 113         wconf->pmk_r1_push = conf->pmk_r1_push;
 114 #endif /* CONFIG_IEEE80211R */
 115 }
 116
 117
 118 int hostapd_reload_config(struct hostapd_iface *iface)
 119 {
 120         struct hostapd_data *hapd = iface->bss[0];
 121         struct hostapd_config *newconf, *oldconf;
 122         struct wpa_auth_config wpa_auth_conf;
 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         hostapd_flush_old_stations(hapd);
 133
 134         /* TODO: update dynamic data based on changed configuration
 135          * items (e.g., open/close sockets, etc.) */
 136         radius_client_flush(hapd->radius, 0);
 137
 138         oldconf = hapd->iconf;
 139         hapd->iconf = newconf;
 140         hapd->conf = &newconf->bss[0];
 141         iface->conf = newconf;
 142
 143         if (hostapd_setup_wpa_psk(hapd->conf)) {
 144                 wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
 145                            "after reloading configuration");
 146         }
 147
 148         if (hapd->conf->wpa && hapd->wpa_auth == NULL)
 149                 hostapd_setup_wpa(hapd);
 150         else if (hapd->conf->wpa) {
 151                 hostapd_wpa_auth_conf(&newconf->bss[0], &wpa_auth_conf);
 152                 wpa_reconfig(hapd->wpa_auth, &wpa_auth_conf);
 153         } else if (hapd->wpa_auth) {
 154                 wpa_deinit(hapd->wpa_auth);
 155                 hapd->wpa_auth = NULL;
 156                 hostapd_set_privacy(hapd, 0);
 157                 hostapd_setup_encryption(hapd->conf->iface, hapd);
 158         }
 159
 160         ieee802_11_set_beacon(hapd);
 161
 162         if (hapd->conf->ssid.ssid_set &&
 163             hostapd_set_ssid(hapd, (u8 *) hapd->conf->ssid.ssid,
 164                              hapd->conf->ssid.ssid_len)) {
 165                 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
 166                 /* try to continue */
 167         }
 168
 169         if (hapd->conf->ieee802_1x || hapd->conf->wpa)
 170                 hostapd_set_ieee8021x(hapd->conf->iface, hapd, 1);
 171
 172         hostapd_config_free(oldconf);
 173
 174         wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface);
 175
 176         return 0;
 177 }
 178
 179
 180 int handle_reload_iface(struct hostapd_iface *iface, void *ctx)
 181 {
 182         if (hostapd_reload_config(iface) < 0) {
 183                 wpa_printf(MSG_WARNING, "Failed to read new configuration "
 184                            "file - continuing with old.");
 185         }
 186         return 0;
 187 }
 188
 189
 190 #ifdef HOSTAPD_DUMP_STATE
 191 /**
 192  * hostapd_dump_state - SIGUSR1 handler to dump hostapd state to a text file
 193  */
 194 static void hostapd_dump_state(struct hostapd_data *hapd)
 195 {
 196         FILE *f;
 197         time_t now;
 198         struct sta_info *sta;
 199         int i;
 200         char *buf;
 201
 202         if (!hapd->conf->dump_log_name) {
 203                 wpa_printf(MSG_DEBUG, "Dump file not defined - ignoring dump "
 204                            "request");
 205                 return;
 206         }
 207
 208         wpa_printf(MSG_DEBUG, "Dumping hostapd state to '%s'",
 209                    hapd->conf->dump_log_name);
 210         f = fopen(hapd->conf->dump_log_name, "w");
 211         if (f == NULL) {
 212                 wpa_printf(MSG_WARNING, "Could not open dump file '%s' for "
 213                            "writing.", hapd->conf->dump_log_name);
 214                 return;
 215         }
 216
 217         time(&now);
 218         fprintf(f, "hostapd state dump - %s", ctime(&now));
 219         fprintf(f, "num_sta=%d num_sta_non_erp=%d "
 220                 "num_sta_no_short_slot_time=%d\n"
 221                 "num_sta_no_short_preamble=%d\n",
 222                 hapd->num_sta, hapd->iface->num_sta_non_erp,
 223                 hapd->iface->num_sta_no_short_slot_time,
 224                 hapd->iface->num_sta_no_short_preamble);
 225
 226         for (sta = hapd->sta_list; sta != NULL; sta = sta->next) {
 227                 fprintf(f, "\nSTA=" MACSTR "\n", MAC2STR(sta->addr));
 228
 229                 fprintf(f,
 230                         "  AID=%d flags=0x%x %s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
 231                         "  capability=0x%x listen_interval=%d\n",
 232                         sta->aid,
 233                         sta->flags,
 234                         (sta->flags & WLAN_STA_AUTH ? "[AUTH]" : ""),
 235                         (sta->flags & WLAN_STA_ASSOC ? "[ASSOC]" : ""),
 236                         (sta->flags & WLAN_STA_PS ? "[PS]" : ""),
 237                         (sta->flags & WLAN_STA_TIM ? "[TIM]" : ""),
 238                         (sta->flags & WLAN_STA_PERM ? "[PERM]" : ""),
 239                         (sta->flags & WLAN_STA_AUTHORIZED ? "[AUTHORIZED]" :
 240                          ""),
 241                         (sta->flags & WLAN_STA_PENDING_POLL ? "[PENDING_POLL" :
 242                          ""),
 243                         (sta->flags & WLAN_STA_SHORT_PREAMBLE ?
 244                          "[SHORT_PREAMBLE]" : ""),
 245                         (sta->flags & WLAN_STA_PREAUTH ? "[PREAUTH]" : ""),
 246                         (sta->flags & WLAN_STA_WMM ? "[WMM]" : ""),
 247                         (sta->flags & WLAN_STA_MFP ? "[MFP]" : ""),
 248                         (sta->flags & WLAN_STA_WPS ? "[WPS]" : ""),
 249                         (sta->flags & WLAN_STA_MAYBE_WPS ? "[MAYBE_WPS]" : ""),
 250                         (sta->flags & WLAN_STA_NONERP ? "[NonERP]" : ""),
 251                         sta->capability,
 252                         sta->listen_interval);
 253
 254                 fprintf(f, "  supported_rates=");
 255                 for (i = 0; i < sta->supported_rates_len; i++)
 256                         fprintf(f, "%02x ", sta->supported_rates[i]);
 257                 fprintf(f, "\n");
 258
 259                 fprintf(f,
 260                         "  timeout_next=%s\n",
 261                         (sta->timeout_next == STA_NULLFUNC ? "NULLFUNC POLL" :
 262                          (sta->timeout_next == STA_DISASSOC ? "DISASSOC" :
 263                           "DEAUTH")));
 264
 265                 ieee802_1x_dump_state(f, "  ", sta);
 266         }
 267
 268         buf = os_malloc(4096);
 269         if (buf) {
 270                 int count = radius_client_get_mib(hapd->radius, buf, 4096);
 271                 if (count < 0)
 272                         count = 0;
 273                 else if (count > 4095)
 274                         count = 4095;
 275                 buf[count] = '\0';
 276                 fprintf(f, "%s", buf);
 277
 278                 count = radius_server_get_mib(hapd->radius_srv, buf, 4096);
 279                 if (count < 0)
 280                         count = 0;
 281                 else if (count > 4095)
 282                         count = 4095;
 283                 buf[count] = '\0';
 284                 fprintf(f, "%s", buf);
 285                 os_free(buf);
 286         }
 287         fclose(f);
 288 }
 289
 290
 291 int handle_dump_state_iface(struct hostapd_iface *iface, void *ctx)
 292 {
 293         size_t i;
 294
 295         for (i = 0; i < iface->num_bss; i++)
 296                 hostapd_dump_state(iface->bss[i]);
 297
 298         return 0;
 299 }
 300 #endif /* HOSTAPD_DUMP_STATE */
 301
 302
 303 static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd,
 304                                               char *ifname)
 305 {
 306         int i;
 307
 308         for (i = 0; i < NUM_WEP_KEYS; i++) {
 309                 if (hostapd_set_key(ifname, hapd, WPA_ALG_NONE, NULL, i,
 310                                     i == 0 ? 1 : 0, NULL, 0, NULL, 0)) {
 311                         wpa_printf(MSG_DEBUG, "Failed to clear default "
 312                                    "encryption keys (ifname=%s keyidx=%d)",
 313                                    ifname, i);
 314                 }
 315         }
 316 #ifdef CONFIG_IEEE80211W
 317         if (hapd->conf->ieee80211w) {
 318                 for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) {
 319                         if (hostapd_set_key(ifname, hapd, WPA_ALG_NONE, NULL,
 320                                             i, i == 0 ? 1 : 0, NULL, 0,
 321                                             NULL, 0)) {
 322                                 wpa_printf(MSG_DEBUG, "Failed to clear "
 323                                            "default mgmt encryption keys "
 324                                            "(ifname=%s keyidx=%d)", ifname, i);
 325                         }
 326                 }
 327         }
 328 #endif /* CONFIG_IEEE80211W */
 329 }
 330
 331
 332 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd)
 333 {
 334         hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface);
 335         return 0;
 336 }
 337
 338
 339 static int hostapd_broadcast_wep_set(struct hostapd_data *hapd)
 340 {
 341         int errors = 0, idx;
 342         struct hostapd_ssid *ssid = &hapd->conf->ssid;
 343
 344         idx = ssid->wep.idx;
 345         if (ssid->wep.default_len &&
 346             hostapd_set_key(hapd->conf->iface,
 347                             hapd, WPA_ALG_WEP, NULL, idx, idx == ssid->wep.idx,
 348                             NULL, 0, ssid->wep.key[idx], ssid->wep.len[idx])) {
 349                 wpa_printf(MSG_WARNING, "Could not set WEP encryption.");
 350                 errors++;
 351         }
 352
 353         if (ssid->dyn_vlan_keys) {
 354                 size_t i;
 355                 for (i = 0; i <= ssid->max_dyn_vlan_keys; i++) {
 356                         const char *ifname;
 357                         struct hostapd_wep_keys *key = ssid->dyn_vlan_keys[i];
 358                         if (key == NULL)
 359                                 continue;
 360                         ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan,
 361                                                             i);
 362                         if (ifname == NULL)
 363                                 continue;
 364
 365                         idx = key->idx;
 366                         if (hostapd_set_key(ifname, hapd, WPA_ALG_WEP, NULL,
 367                                             idx, idx == key->idx, NULL, 0,
 368                                             key->key[idx], key->len[idx])) {
 369                                 wpa_printf(MSG_WARNING, "Could not set "
 370                                            "dynamic VLAN WEP encryption.");
 371                                 errors++;
 372                         }
 373                 }
 374         }
 375
 376         return errors;
 377 }
 378
 379 /**
 380  * hostapd_cleanup - Per-BSS cleanup (deinitialization)
 381  * @hapd: Pointer to BSS data
 382  *
 383  * This function is used to free all per-BSS data structures and resources.
 384  * This gets called in a loop for each BSS between calls to
 385  * hostapd_cleanup_iface_pre() and hostapd_cleanup_iface() when an interface
 386  * is deinitialized. Most of the modules that are initialized in
 387  * hostapd_setup_bss() are deinitialized here.
 388  */
 389 static void hostapd_cleanup(struct hostapd_data *hapd)
 390 {
 391         hostapd_ctrl_iface_deinit(hapd);
 392
 393         os_free(hapd->default_wep_key);
 394         hapd->default_wep_key = NULL;
 395         iapp_deinit(hapd->iapp);
 396         hapd->iapp = NULL;
 397         accounting_deinit(hapd);
 398         rsn_preauth_iface_deinit(hapd);
 399         if (hapd->wpa_auth) {
 400                 wpa_deinit(hapd->wpa_auth);
 401                 hapd->wpa_auth = NULL;
 402
 403                 if (hostapd_set_privacy(hapd, 0)) {
 404                         wpa_printf(MSG_DEBUG, "Could not disable "
 405                                    "PrivacyInvoked for interface %s",
 406                                    hapd->conf->iface);
 407                 }
 408
 409                 if (hostapd_set_generic_elem(hapd, (u8 *) "", 0)) {
 410                         wpa_printf(MSG_DEBUG, "Could not remove generic "
 411                                    "information element from interface %s",
 412                                    hapd->conf->iface);
 413                 }
 414         }
 415         ieee802_1x_deinit(hapd);
 416         vlan_deinit(hapd);
 417         hostapd_acl_deinit(hapd);
 418         radius_client_deinit(hapd->radius);
 419         hapd->radius = NULL;
 420         radius_server_deinit(hapd->radius_srv);
 421         hapd->radius_srv = NULL;
 422
 423 #ifdef CONFIG_IEEE80211R
 424         l2_packet_deinit(hapd->l2);
 425 #endif /* CONFIG_IEEE80211R */
 426
 427         hostapd_deinit_wps(hapd);
 428
 429 #ifdef EAP_TLS_FUNCS
 430         if (hapd->ssl_ctx) {
 431                 tls_deinit(hapd->ssl_ctx);
 432                 hapd->ssl_ctx = NULL;
 433         }
 434 #endif /* EAP_TLS_FUNCS */
 435
 436 #ifdef EAP_SERVER
 437         if (hapd->eap_sim_db_priv) {
 438                 eap_sim_db_deinit(hapd->eap_sim_db_priv);
 439                 hapd->eap_sim_db_priv = NULL;
 440         }
 441 #endif /* EAP_SERVER */
 442
 443         if (hapd->interface_added &&
 444             hostapd_bss_remove(hapd, hapd->conf->iface)) {
 445                 wpa_printf(MSG_WARNING, "Failed to remove BSS interface %s",
 446                            hapd->conf->iface);
 447         }
 448 }
 449
 450
 451 /**
 452  * hostapd_cleanup_iface_pre - Preliminary per-interface cleanup
 453  * @iface: Pointer to interface data
 454  *
 455  * This function is called before per-BSS data structures are deinitialized
 456  * with hostapd_cleanup().
 457  */
 458 static void hostapd_cleanup_iface_pre(struct hostapd_iface *iface)
 459 {
 460 }
 461
 462
 463 /**
 464  * hostapd_cleanup_iface - Complete per-interface cleanup
 465  * @iface: Pointer to interface data
 466  *
 467  * This function is called after per-BSS data structures are deinitialized
 468  * with hostapd_cleanup().
 469  */
 470 static void hostapd_cleanup_iface(struct hostapd_iface *iface)
 471 {
 472         hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
 473         iface->hw_features = NULL;
 474         os_free(iface->current_rates);
 475         iface->current_rates = NULL;
 476         ap_list_deinit(iface);
 477         hostapd_config_free(iface->conf);
 478         iface->conf = NULL;
 479
 480         os_free(iface->config_fname);
 481         os_free(iface->bss);
 482         os_free(iface);
 483 }
 484
 485
 486 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
 487 {
 488         int i;
 489
 490         hostapd_broadcast_wep_set(hapd);
 491
 492         if (hapd->conf->ssid.wep.default_len)
 493                 return 0;
 494
 495         for (i = 0; i < 4; i++) {
 496                 if (hapd->conf->ssid.wep.key[i] &&
 497                     hostapd_set_key(iface, hapd, WPA_ALG_WEP, NULL, i,
 498                                     i == hapd->conf->ssid.wep.idx, NULL, 0,
 499                                     hapd->conf->ssid.wep.key[i],
 500                                     hapd->conf->ssid.wep.len[i])) {
 501                         wpa_printf(MSG_WARNING, "Could not set WEP "
 502                                    "encryption.");
 503                         return -1;
 504                 }
 505                 if (hapd->conf->ssid.wep.key[i] &&
 506                     i == hapd->conf->ssid.wep.idx)
 507                         hostapd_set_privacy(hapd, 1);
 508         }
 509
 510         return 0;
 511 }
 512
 513
 514 static int hostapd_flush_old_stations(struct hostapd_data *hapd)
 515 {
 516         int ret = 0;
 517
 518         if (hostapd_drv_none(hapd))
 519                 return 0;
 520
 521         wpa_printf(MSG_DEBUG, "Flushing old station entries");
 522         if (hostapd_flush(hapd)) {
 523                 wpa_printf(MSG_WARNING, "Could not connect to kernel driver.");
 524                 ret = -1;
 525         }
 526         wpa_printf(MSG_DEBUG, "Deauthenticate all stations");
 527
 528         /* New Prism2.5/3 STA firmware versions seem to have issues with this
 529          * broadcast deauth frame. This gets the firmware in odd state where
 530          * nothing works correctly, so let's skip sending this for the hostap
 531          * driver. */
 532         if (hapd->driver && os_strcmp(hapd->driver->name, "hostap") != 0) {
 533                 u8 addr[ETH_ALEN];
 534                 os_memset(addr, 0xff, ETH_ALEN);
 535                 hostapd_sta_deauth(hapd, addr,
 536                                    WLAN_REASON_PREV_AUTH_NOT_VALID);
 537         }
 538
 539         return ret;
 540 }
 541
 542
 543 static void hostapd_wpa_auth_logger(void *ctx, const u8 *addr,
 544                                     logger_level level, const char *txt)
 545 {
 546 #ifndef CONFIG_NO_HOSTAPD_LOGGER
 547         struct hostapd_data *hapd = ctx;
 548         int hlevel;
 549
 550         switch (level) {
 551         case LOGGER_WARNING:
 552                 hlevel = HOSTAPD_LEVEL_WARNING;
 553                 break;
 554         case LOGGER_INFO:
 555                 hlevel = HOSTAPD_LEVEL_INFO;
 556                 break;
 557         case LOGGER_DEBUG:
 558         default:
 559                 hlevel = HOSTAPD_LEVEL_DEBUG;
 560                 break;
 561         }
 562
 563         hostapd_logger(hapd, addr, HOSTAPD_MODULE_WPA, hlevel, "%s", txt);
 564 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
 565 }
 566
 567
 568 static void hostapd_wpa_auth_disconnect(void *ctx, const u8 *addr,
 569                                         u16 reason)
 570 {
 571         struct hostapd_data *hapd = ctx;
 572         struct sta_info *sta;
 573
 574         wpa_printf(MSG_DEBUG, "%s: WPA authenticator requests disconnect: "
 575                    "STA " MACSTR " reason %d",
 576                    __func__, MAC2STR(addr), reason);
 577
 578         sta = ap_get_sta(hapd, addr);
 579         hostapd_sta_deauth(hapd, addr, reason);
 580         if (sta == NULL)
 581                 return;
 582         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_AUTHORIZED);
 583         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 584         eloop_register_timeout(0, 0, ap_handle_timer, hapd, sta);
 585         sta->timeout_next = STA_REMOVE;
 586 }
 587
 588
 589 static void hostapd_wpa_auth_mic_failure_report(void *ctx, const u8 *addr)
 590 {
 591         struct hostapd_data *hapd = ctx;
 592         michael_mic_failure(hapd, addr, 0);
 593 }
 594
 595
 596 static void hostapd_wpa_auth_set_eapol(void *ctx, const u8 *addr,
 597                                        wpa_eapol_variable var, int value)
 598 {
 599         struct hostapd_data *hapd = ctx;
 600         struct sta_info *sta = ap_get_sta(hapd, addr);
 601         if (sta == NULL)
 602                 return;
 603         switch (var) {
 604         case WPA_EAPOL_portEnabled:
 605                 ieee802_1x_notify_port_enabled(sta->eapol_sm, value);
 606                 break;
 607         case WPA_EAPOL_portValid:
 608                 ieee802_1x_notify_port_valid(sta->eapol_sm, value);
 609                 break;
 610         case WPA_EAPOL_authorized:
 611                 ieee802_1x_set_sta_authorized(hapd, sta, value);
 612                 break;
 613         case WPA_EAPOL_portControl_Auto:
 614                 if (sta->eapol_sm)
 615                         sta->eapol_sm->portControl = Auto;
 616                 break;
 617         case WPA_EAPOL_keyRun:
 618                 if (sta->eapol_sm)
 619                         sta->eapol_sm->keyRun = value ? TRUE : FALSE;
 620                 break;
 621         case WPA_EAPOL_keyAvailable:
 622                 if (sta->eapol_sm)
 623                         sta->eapol_sm->eap_if->eapKeyAvailable =
 624                                 value ? TRUE : FALSE;
 625                 break;
 626         case WPA_EAPOL_keyDone:
 627                 if (sta->eapol_sm)
 628                         sta->eapol_sm->keyDone = value ? TRUE : FALSE;
 629                 break;
 630         case WPA_EAPOL_inc_EapolFramesTx:
 631                 if (sta->eapol_sm)
 632                         sta->eapol_sm->dot1xAuthEapolFramesTx++;
 633                 break;
 634         }
 635 }
 636
 637
 638 static int hostapd_wpa_auth_get_eapol(void *ctx, const u8 *addr,
 639                                       wpa_eapol_variable var)
 640 {
 641         struct hostapd_data *hapd = ctx;
 642         struct sta_info *sta = ap_get_sta(hapd, addr);
 643         if (sta == NULL || sta->eapol_sm == NULL)
 644                 return -1;
 645         switch (var) {
 646         case WPA_EAPOL_keyRun:
 647                 return sta->eapol_sm->keyRun;
 648         case WPA_EAPOL_keyAvailable:
 649                 return sta->eapol_sm->eap_if->eapKeyAvailable;
 650         default:
 651                 return -1;
 652         }
 653 }
 654
 655
 656 static const u8 * hostapd_wpa_auth_get_psk(void *ctx, const u8 *addr,
 657                                            const u8 *prev_psk)
 658 {
 659         struct hostapd_data *hapd = ctx;
 660         return hostapd_get_psk(hapd->conf, addr, prev_psk);
 661 }
 662
 663
 664 static int hostapd_wpa_auth_get_msk(void *ctx, const u8 *addr, u8 *msk,
 665                                     size_t *len)
 666 {
 667         struct hostapd_data *hapd = ctx;
 668         const u8 *key;
 669         size_t keylen;
 670         struct sta_info *sta;
 671
 672         sta = ap_get_sta(hapd, addr);
 673         if (sta == NULL)
 674                 return -1;
 675
 676         key = ieee802_1x_get_key(sta->eapol_sm, &keylen);
 677         if (key == NULL)
 678                 return -1;
 679
 680         if (keylen > *len)
 681                 keylen = *len;
 682         os_memcpy(msk, key, keylen);
 683         *len = keylen;
 684
 685         return 0;
 686 }
 687
 688
 689 static int hostapd_wpa_auth_set_key(void *ctx, int vlan_id, wpa_alg alg,
 690                                     const u8 *addr, int idx, u8 *key,
 691                                     size_t key_len)
 692 {
 693         struct hostapd_data *hapd = ctx;
 694         const char *ifname = hapd->conf->iface;
 695
 696         if (vlan_id > 0) {
 697                 ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
 698                 if (ifname == NULL)
 699                         return -1;
 700         }
 701
 702         return hostapd_set_key(ifname, hapd, alg, addr, idx, 1, NULL, 0,
 703                                key, key_len);
 704 }
 705
 706
 707 static int hostapd_wpa_auth_get_seqnum(void *ctx, const u8 *addr, int idx,
 708                                        u8 *seq)
 709 {
 710         struct hostapd_data *hapd = ctx;
 711         return hostapd_get_seqnum(hapd->conf->iface, hapd, addr, idx, seq);
 712 }
 713
 714
 715 static int hostapd_wpa_auth_get_seqnum_igtk(void *ctx, const u8 *addr, int idx,
 716                                             u8 *seq)
 717 {
 718         struct hostapd_data *hapd = ctx;
 719         return hostapd_get_seqnum_igtk(hapd->conf->iface, hapd, addr, idx,
 720                                        seq);
 721 }
 722
 723
 724 static int hostapd_wpa_auth_send_eapol(void *ctx, const u8 *addr,
 725                                        const u8 *data, size_t data_len,
 726                                        int encrypt)
 727 {
 728         struct hostapd_data *hapd = ctx;
 729         return hostapd_send_eapol(hapd, addr, data, data_len, encrypt);
 730 }
 731
 732
 733 static int hostapd_wpa_auth_for_each_sta(
 734         void *ctx, int (*cb)(struct wpa_state_machine *sm, void *ctx),
 735         void *cb_ctx)
 736 {
 737         struct hostapd_data *hapd = ctx;
 738         struct sta_info *sta;
 739
 740         for (sta = hapd->sta_list; sta; sta = sta->next) {
 741                 if (sta->wpa_sm && cb(sta->wpa_sm, cb_ctx))
 742                         return 1;
 743         }
 744         return 0;
 745 }
 746
 747
 748 struct wpa_auth_iface_iter_data {
 749         int (*cb)(struct wpa_authenticator *sm, void *ctx);
 750         void *cb_ctx;
 751 };
 752
 753 static int wpa_auth_iface_iter(struct hostapd_iface *iface, void *ctx)
 754 {
 755         struct wpa_auth_iface_iter_data *data = ctx;
 756         size_t i;
 757         for (i = 0; i < iface->num_bss; i++) {
 758                 if (data->cb(iface->bss[i]->wpa_auth, data->cb_ctx))
 759                         return 1;
 760         }
 761         return 0;
 762 }
 763
 764
 765 static int hostapd_wpa_auth_for_each_auth(
 766         void *ctx, int (*cb)(struct wpa_authenticator *sm, void *ctx),
 767         void *cb_ctx)
 768 {
 769         struct wpa_auth_iface_iter_data data;
 770         data.cb = cb;
 771         data.cb_ctx = cb_ctx;
 772         return hostapd_for_each_interface(wpa_auth_iface_iter, &data);
 773 }
 774
 775
 776 static int hostapd_wpa_auth_send_ether(void *ctx, const u8 *dst, u16 proto,
 777                                        const u8 *data, size_t data_len)
 778 {
 779         struct hostapd_data *hapd = ctx;
 780
 781         if (hapd->driver && hapd->driver->send_ether)
 782                 return hapd->driver->send_ether(hapd->drv_priv, dst,
 783                                                 hapd->own_addr, proto,
 784                                                 data, data_len);
 785         if (hapd->l2 == NULL)
 786                 return -1;
 787         return l2_packet_send(hapd->l2, dst, proto, data, data_len);
 788 }
 789
 790
 791 #ifdef CONFIG_IEEE80211R
 792
 793 static int hostapd_wpa_auth_send_ft_action(void *ctx, const u8 *dst,
 794                                            const u8 *data, size_t data_len)
 795 {
 796         struct hostapd_data *hapd = ctx;
 797         int res;
 798         struct ieee80211_mgmt *m;
 799         size_t mlen;
 800         struct sta_info *sta;
 801
 802         sta = ap_get_sta(hapd, dst);
 803         if (sta == NULL || sta->wpa_sm == NULL)
 804                 return -1;
 805
 806         m = os_zalloc(sizeof(*m) + data_len);
 807         if (m == NULL)
 808                 return -1;
 809         mlen = ((u8 *) &m->u - (u8 *) m) + data_len;
 810         m->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 811                                         WLAN_FC_STYPE_ACTION);
 812         os_memcpy(m->da, dst, ETH_ALEN);
 813         os_memcpy(m->sa, hapd->own_addr, ETH_ALEN);
 814         os_memcpy(m->bssid, hapd->own_addr, ETH_ALEN);
 815         os_memcpy(&m->u, data, data_len);
 816
 817         res = hostapd_send_mgmt_frame(hapd, (u8 *) m, mlen, 0);
 818         os_free(m);
 819         return res;
 820 }
 821
 822
 823 static struct wpa_state_machine *
 824 hostapd_wpa_auth_add_sta(void *ctx, const u8 *sta_addr)
 825 {
 826         struct hostapd_data *hapd = ctx;
 827         struct sta_info *sta;
 828
 829         sta = ap_sta_add(hapd, sta_addr);
 830         if (sta == NULL)
 831                 return NULL;
 832         if (sta->wpa_sm)
 833                 return sta->wpa_sm;
 834
 835         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr);
 836         if (sta->wpa_sm == NULL) {
 837                 ap_free_sta(hapd, sta);
 838                 return NULL;
 839         }
 840         sta->auth_alg = WLAN_AUTH_FT;
 841
 842         return sta->wpa_sm;
 843 }
 844
 845
 846 static void hostapd_rrb_receive(void *ctx, const u8 *src_addr, const u8 *buf,
 847                                 size_t len)
 848 {
 849         struct hostapd_data *hapd = ctx;
 850         wpa_ft_rrb_rx(hapd->wpa_auth, src_addr, buf, len);
 851 }
 852
 853 #endif /* CONFIG_IEEE80211R */
 854
 855
 856 /**
 857  * hostapd_validate_bssid_configuration - Validate BSSID configuration
 858  * @iface: Pointer to interface data
 859  * Returns: 0 on success, -1 on failure
 860  *
 861  * This function is used to validate that the configured BSSIDs are valid.
 862  */
 863 static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
 864 {
 865         u8 mask[ETH_ALEN] = { 0 };
 866         struct hostapd_data *hapd = iface->bss[0];
 867         unsigned int i = iface->conf->num_bss, bits = 0, j;
 868         int res;
 869         int auto_addr = 0;
 870
 871         if (hostapd_drv_none(hapd))
 872                 return 0;
 873
 874         /* Generate BSSID mask that is large enough to cover the BSSIDs. */
 875
 876         /* Determine the bits necessary to cover the number of BSSIDs. */
 877         for (i--; i; i >>= 1)
 878                 bits++;
 879
 880         /* Determine the bits necessary to any configured BSSIDs,
 881            if they are higher than the number of BSSIDs. */
 882         for (j = 0; j < iface->conf->num_bss; j++) {
 883                 if (hostapd_mac_comp_empty(iface->conf->bss[j].bssid) == 0) {
 884                         if (j)
 885                                 auto_addr++;
 886                         continue;
 887                 }
 888
 889                 for (i = 0; i < ETH_ALEN; i++) {
 890                         mask[i] |=
 891                                 iface->conf->bss[j].bssid[i] ^
 892                                 hapd->own_addr[i];
 893                 }
 894         }
 895
 896         if (!auto_addr)
 897                 goto skip_mask_ext;
 898
 899         for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
 900                 ;
 901         j = 0;
 902         if (i < ETH_ALEN) {
 903                 j = (5 - i) * 8;
 904
 905                 while (mask[i] != 0) {
 906                         mask[i] >>= 1;
 907                         j++;
 908                 }
 909         }
 910
 911         if (bits < j)
 912                 bits = j;
 913
 914         if (bits > 40) {
 915                 wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)",
 916                            bits);
 917                 return -1;
 918         }
 919
 920         os_memset(mask, 0xff, ETH_ALEN);
 921         j = bits / 8;
 922         for (i = 5; i > 5 - j; i--)
 923                 mask[i] = 0;
 924         j = bits % 8;
 925         while (j--)
 926                 mask[i] <<= 1;
 927
 928 skip_mask_ext:
 929         wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
 930                    (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
 931
 932         res = hostapd_valid_bss_mask(hapd, hapd->own_addr, mask);
 933         if (res == 0)
 934                 return 0;
 935
 936         if (res < 0) {
 937                 wpa_printf(MSG_ERROR, "Driver did not accept BSSID mask "
 938                            MACSTR " for start address " MACSTR ".",
 939                            MAC2STR(mask), MAC2STR(hapd->own_addr));
 940                 return -1;
 941         }
 942
 943         if (!auto_addr)
 944                 return 0;
 945
 946         for (i = 0; i < ETH_ALEN; i++) {
 947                 if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
 948                         wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR
 949                                    " for start address " MACSTR ".",
 950                                    MAC2STR(mask), MAC2STR(hapd->own_addr));
 951                         wpa_printf(MSG_ERROR, "Start address must be the "
 952                                    "first address in the block (i.e., addr "
 953                                    "AND mask == addr).");
 954                         return -1;
 955                 }
 956         }
 957
 958         return 0;
 959 }
 960
 961
 962 static int mac_in_conf(struct hostapd_config *conf, const void *a)
 963 {
 964         size_t i;
 965
 966         for (i = 0; i < conf->num_bss; i++) {
 967                 if (hostapd_mac_comp(conf->bss[i].bssid, a) == 0) {
 968                         return 1;
 969                 }
 970         }
 971
 972         return 0;
 973 }
 974
 975
 976 static int hostapd_setup_wpa(struct hostapd_data *hapd)
 977 {
 978         struct wpa_auth_config _conf;
 979         struct wpa_auth_callbacks cb;
 980         const u8 *wpa_ie;
 981         size_t wpa_ie_len;
 982
 983         hostapd_wpa_auth_conf(hapd->conf, &_conf);
 984         os_memset(&cb, 0, sizeof(cb));
 985         cb.ctx = hapd;
 986         cb.logger = hostapd_wpa_auth_logger;
 987         cb.disconnect = hostapd_wpa_auth_disconnect;
 988         cb.mic_failure_report = hostapd_wpa_auth_mic_failure_report;
 989         cb.set_eapol = hostapd_wpa_auth_set_eapol;
 990         cb.get_eapol = hostapd_wpa_auth_get_eapol;
 991         cb.get_psk = hostapd_wpa_auth_get_psk;
 992         cb.get_msk = hostapd_wpa_auth_get_msk;
 993         cb.set_key = hostapd_wpa_auth_set_key;
 994         cb.get_seqnum = hostapd_wpa_auth_get_seqnum;
 995         cb.get_seqnum_igtk = hostapd_wpa_auth_get_seqnum_igtk;
 996         cb.send_eapol = hostapd_wpa_auth_send_eapol;
 997         cb.for_each_sta = hostapd_wpa_auth_for_each_sta;
 998         cb.for_each_auth = hostapd_wpa_auth_for_each_auth;
 999         cb.send_ether = hostapd_wpa_auth_send_ether;
1000 #ifdef CONFIG_IEEE80211R
1001         cb.send_ft_action = hostapd_wpa_auth_send_ft_action;
1002         cb.add_sta = hostapd_wpa_auth_add_sta;
1003 #endif /* CONFIG_IEEE80211R */
1004         hapd->wpa_auth = wpa_init(hapd->own_addr, &_conf, &cb);
1005         if (hapd->wpa_auth == NULL) {
1006                 wpa_printf(MSG_ERROR, "WPA initialization failed.");
1007                 return -1;
1008         }
1009
1010         if (hostapd_set_privacy(hapd, 1)) {
1011                 wpa_printf(MSG_ERROR, "Could not set PrivacyInvoked "
1012                            "for interface %s", hapd->conf->iface);
1013                 return -1;
1014         }
1015
1016         wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
1017         if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len)) {
1018                 wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
1019                            "the kernel driver.");
1020                 return -1;
1021         }
1022
1023         if (rsn_preauth_iface_init(hapd)) {
1024                 wpa_printf(MSG_ERROR, "Initialization of RSN "
1025                            "pre-authentication failed.");
1026                 return -1;
1027         }
1028
1029         return 0;
1030
1031 }
1032
1033
1034 static int hostapd_setup_radius_srv(struct hostapd_data *hapd,
1035                                     struct hostapd_bss_config *conf)
1036 {
1037         struct radius_server_conf srv;
1038         os_memset(&srv, 0, sizeof(srv));
1039         srv.client_file = conf->radius_server_clients;
1040         srv.auth_port = conf->radius_server_auth_port;
1041         srv.conf_ctx = conf;
1042         srv.eap_sim_db_priv = hapd->eap_sim_db_priv;
1043         srv.ssl_ctx = hapd->ssl_ctx;
1044         srv.pac_opaque_encr_key = conf->pac_opaque_encr_key;
1045         srv.eap_fast_a_id = conf->eap_fast_a_id;
1046         srv.eap_fast_a_id_len = conf->eap_fast_a_id_len;
1047         srv.eap_fast_a_id_info = conf->eap_fast_a_id_info;
1048         srv.eap_fast_prov = conf->eap_fast_prov;
1049         srv.pac_key_lifetime = conf->pac_key_lifetime;
1050         srv.pac_key_refresh_time = conf->pac_key_refresh_time;
1051         srv.eap_sim_aka_result_ind = conf->eap_sim_aka_result_ind;
1052         srv.tnc = conf->tnc;
1053         srv.wps = hapd->wps;
1054         srv.ipv6 = conf->radius_server_ipv6;
1055         srv.get_eap_user = hostapd_radius_get_eap_user;
1056         srv.eap_req_id_text = conf->eap_req_id_text;
1057         srv.eap_req_id_text_len = conf->eap_req_id_text_len;
1058
1059         hapd->radius_srv = radius_server_init(&srv);
1060         if (hapd->radius_srv == NULL) {
1061                 wpa_printf(MSG_ERROR, "RADIUS server initialization failed.");
1062                 return -1;
1063         }
1064
1065         return 0;
1066 }
1067
1068
1069 /**
1070  * hostapd_setup_bss - Per-BSS setup (initialization)
1071  * @hapd: Pointer to BSS data
1072  * @first: Whether this BSS is the first BSS of an interface
1073  *
1074  * This function is used to initialize all per-BSS data structures and
1075  * resources. This gets called in a loop for each BSS when an interface is
1076  * initialized. Most of the modules that are initialized here will be
1077  * deinitialized in hostapd_cleanup().
1078  */
1079 static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
1080 {
1081         struct hostapd_bss_config *conf = hapd->conf;
1082         u8 ssid[HOSTAPD_MAX_SSID_LEN + 1];
1083         int ssid_len, set_ssid;
1084
1085         if (!first) {
1086                 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0) {
1087                         /* Allocate the next available BSSID. */
1088                         do {
1089                                 inc_byte_array(hapd->own_addr, ETH_ALEN);
1090                         } while (mac_in_conf(hapd->iconf, hapd->own_addr));
1091                 } else {
1092                         /* Allocate the configured BSSID. */
1093                         os_memcpy(hapd->own_addr, hapd->conf->bssid, ETH_ALEN);
1094
1095                         if (hostapd_mac_comp(hapd->own_addr,
1096                                              hapd->iface->bss[0]->own_addr) ==
1097                             0) {
1098                                 wpa_printf(MSG_ERROR, "BSS '%s' may not have "
1099                                            "BSSID set to the MAC address of "
1100                                            "the radio", hapd->conf->iface);
1101                                 return -1;
1102                         }
1103                 }
1104
1105                 hapd->interface_added = 1;
1106                 if (hostapd_bss_add(hapd->iface->bss[0], hapd->conf->iface,
1107                                     hapd->own_addr)) {
1108                         wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
1109                                    MACSTR ")", MAC2STR(hapd->own_addr));
1110                         return -1;
1111                 }
1112         }
1113
1114         /*
1115          * Fetch the SSID from the system and use it or,
1116          * if one was specified in the config file, verify they
1117          * match.
1118          */
1119         ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
1120         if (ssid_len < 0) {
1121                 wpa_printf(MSG_ERROR, "Could not read SSID from system");
1122                 return -1;
1123         }
1124         if (conf->ssid.ssid_set) {
1125                 /*
1126                  * If SSID is specified in the config file and it differs
1127                  * from what is being used then force installation of the
1128                  * new SSID.
1129                  */
1130                 set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
1131                             os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
1132         } else {
1133                 /*
1134                  * No SSID in the config file; just use the one we got
1135                  * from the system.
1136                  */
1137                 set_ssid = 0;
1138                 conf->ssid.ssid_len = ssid_len;
1139                 os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
1140                 conf->ssid.ssid[conf->ssid.ssid_len] = '\0';
1141         }
1142
1143         if (!hostapd_drv_none(hapd)) {
1144                 wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR
1145                            " and ssid '%s'",
1146                            hapd->conf->iface, MAC2STR(hapd->own_addr),
1147                            hapd->conf->ssid.ssid);
1148         }
1149
1150         if (hostapd_setup_wpa_psk(conf)) {
1151                 wpa_printf(MSG_ERROR, "WPA-PSK setup failed.");
1152                 return -1;
1153         }
1154
1155         /* Set flag for whether SSID is broadcast in beacons */
1156         if (hostapd_set_broadcast_ssid(hapd,
1157                                        !!hapd->conf->ignore_broadcast_ssid)) {
1158                 wpa_printf(MSG_ERROR, "Could not set broadcast SSID flag for "
1159                            "kernel driver");
1160                 return -1;
1161         }
1162
1163         /* Set SSID for the kernel driver (to be used in beacon and probe
1164          * response frames) */
1165         if (set_ssid && hostapd_set_ssid(hapd, (u8 *) conf->ssid.ssid,
1166                                          conf->ssid.ssid_len)) {
1167                 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
1168                 return -1;
1169         }
1170
1171         if (wpa_debug_level == MSG_MSGDUMP)
1172                 conf->radius->msg_dumps = 1;
1173         hapd->radius = radius_client_init(hapd, conf->radius);
1174         if (hapd->radius == NULL) {
1175                 wpa_printf(MSG_ERROR, "RADIUS client initialization failed.");
1176                 return -1;
1177         }
1178
1179         if (hostapd_acl_init(hapd)) {
1180                 wpa_printf(MSG_ERROR, "ACL initialization failed.");
1181                 return -1;
1182         }
1183         if (hostapd_init_wps(hapd, conf))
1184                 return -1;
1185
1186         if (ieee802_1x_init(hapd)) {
1187                 wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed.");
1188                 return -1;
1189         }
1190
1191         if (hapd->conf->wpa && hostapd_setup_wpa(hapd))
1192                 return -1;
1193
1194         if (accounting_init(hapd)) {
1195                 wpa_printf(MSG_ERROR, "Accounting initialization failed.");
1196                 return -1;
1197         }
1198
1199         if (hapd->conf->ieee802_11f &&
1200             (hapd->iapp = iapp_init(hapd, hapd->conf->iapp_iface)) == NULL) {
1201                 wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization "
1202                            "failed.");
1203                 return -1;
1204         }
1205
1206         if (hostapd_ctrl_iface_init(hapd)) {
1207                 wpa_printf(MSG_ERROR, "Failed to setup control interface");
1208                 return -1;
1209         }
1210
1211         if (!hostapd_drv_none(hapd) && vlan_init(hapd)) {
1212                 wpa_printf(MSG_ERROR, "VLAN initialization failed.");
1213                 return -1;
1214         }
1215
1216 #ifdef CONFIG_IEEE80211R
1217         if (!hostapd_drv_none(hapd)) {
1218                 hapd->l2 = l2_packet_init(hapd->conf->iface, NULL, ETH_P_RRB,
1219                                           hostapd_rrb_receive, hapd, 0);
1220                 if (hapd->l2 == NULL &&
1221                     (hapd->driver == NULL ||
1222                      hapd->driver->send_ether == NULL)) {
1223                         wpa_printf(MSG_ERROR, "Failed to open l2_packet "
1224                                    "interface");
1225                         return -1;
1226                 }
1227         }
1228 #endif /* CONFIG_IEEE80211R */
1229
1230         ieee802_11_set_beacon(hapd);
1231
1232         if (conf->radius_server_clients &&
1233             hostapd_setup_radius_srv(hapd, conf))
1234                 return -1;
1235
1236         return 0;
1237 }
1238
1239
1240 static void hostapd_tx_queue_params(struct hostapd_iface *iface)
1241 {
1242         struct hostapd_data *hapd = iface->bss[0];
1243         int i;
1244         struct hostapd_tx_queue_params *p;
1245
1246         for (i = 0; i < NUM_TX_QUEUES; i++) {
1247                 p = &iface->conf->tx_queue[i];
1248
1249                 if (!p->configured)
1250                         continue;
1251
1252                 if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin,
1253                                                 p->cwmax, p->burst)) {
1254                         wpa_printf(MSG_DEBUG, "Failed to set TX queue "
1255                                    "parameters for queue %d.", i);
1256                         /* Continue anyway */
1257                 }
1258         }
1259 }
1260
1261
1262 static int hostapd_radius_get_eap_user(void *ctx, const u8 *identity,
1263                                        size_t identity_len, int phase2,
1264                                        struct eap_user *user)
1265 {
1266         const struct hostapd_eap_user *eap_user;
1267         int i, count;
1268
1269         eap_user = hostapd_get_eap_user(ctx, identity, identity_len, phase2);
1270         if (eap_user == NULL)
1271                 return -1;
1272
1273         if (user == NULL)
1274                 return 0;
1275
1276         os_memset(user, 0, sizeof(*user));
1277         count = EAP_USER_MAX_METHODS;
1278         if (count > EAP_MAX_METHODS)
1279                 count = EAP_MAX_METHODS;
1280         for (i = 0; i < count; i++) {
1281                 user->methods[i].vendor = eap_user->methods[i].vendor;
1282                 user->methods[i].method = eap_user->methods[i].method;
1283         }
1284
1285         if (eap_user->password) {
1286                 user->password = os_malloc(eap_user->password_len);
1287                 if (user->password == NULL)
1288                         return -1;
1289                 os_memcpy(user->password, eap_user->password,
1290                           eap_user->password_len);
1291                 user->password_len = eap_user->password_len;
1292                 user->password_hash = eap_user->password_hash;
1293         }
1294         user->force_version = eap_user->force_version;
1295         user->ttls_auth = eap_user->ttls_auth;
1296
1297         return 0;
1298 }
1299
1300
1301 static int setup_interface(struct hostapd_iface *iface)
1302 {
1303         struct hostapd_data *hapd = iface->bss[0];
1304         struct hostapd_bss_config *conf = hapd->conf;
1305         size_t i;
1306         char country[4];
1307         u8 *b = conf->bssid;
1308         int freq;
1309         size_t j;
1310         u8 *prev_addr;
1311
1312         /*
1313          * Initialize the driver interface and make sure that all BSSes get
1314          * configured with a pointer to this driver interface.
1315          */
1316         if (b[0] | b[1] | b[2] | b[3] | b[4] | b[5]) {
1317                 hapd->drv_priv = hostapd_driver_init_bssid(hapd, b);
1318         } else {
1319                 hapd->drv_priv = hostapd_driver_init(hapd);
1320         }
1321
1322         if (hapd->drv_priv == NULL) {
1323                 wpa_printf(MSG_ERROR, "%s driver initialization failed.",
1324                            hapd->driver ? hapd->driver->name : "Unknown");
1325                 hapd->driver = NULL;
1326                 return -1;
1327         }
1328         for (i = 0; i < iface->num_bss; i++) {
1329                 iface->bss[i]->driver = hapd->driver;
1330                 iface->bss[i]->drv_priv = hapd->drv_priv;
1331         }
1332
1333         if (hostapd_validate_bssid_configuration(iface))
1334                 return -1;
1335
1336 #ifdef CONFIG_IEEE80211N
1337         SET_2BIT_LE16(&iface->ht_op_mode,
1338                       HT_INFO_OPERATION_MODE_OP_MODE_OFFSET,
1339                       OP_MODE_PURE);
1340 #endif /* CONFIG_IEEE80211N */
1341
1342         if (hapd->iconf->country[0] && hapd->iconf->country[1]) {
1343                 os_memcpy(country, hapd->iconf->country, 3);
1344                 country[3] = '\0';
1345                 if (hostapd_set_country(hapd, country) < 0) {
1346                         wpa_printf(MSG_ERROR, "Failed to set country code");
1347                         return -1;
1348                 }
1349         }
1350
1351         if (hapd->iconf->ieee80211d &&
1352             hostapd_set_ieee80211d(hapd, 1) < 0) {
1353                 wpa_printf(MSG_ERROR, "Failed to set ieee80211d (%d)",
1354                            hapd->iconf->ieee80211d);
1355                 return -1;
1356         }
1357
1358         if (hapd->iconf->bridge_packets != INTERNAL_BRIDGE_DO_NOT_CONTROL &&
1359             hostapd_set_internal_bridge(hapd, hapd->iconf->bridge_packets)) {
1360                 wpa_printf(MSG_ERROR, "Failed to set bridge_packets for "
1361                            "kernel driver");
1362                 return -1;
1363         }
1364
1365         if (hostapd_get_hw_features(iface)) {
1366                 /* Not all drivers support this yet, so continue without hw
1367                  * feature data. */
1368         } else {
1369                 int ret = hostapd_select_hw_mode(iface);
1370                 if (ret < 0) {
1371                         wpa_printf(MSG_ERROR, "Could not select hw_mode and "
1372                                    "channel. (%d)", ret);
1373                         return -1;
1374                 }
1375         }
1376
1377         hostapd_flush_old_stations(hapd);
1378         hostapd_set_privacy(hapd, 0);
1379
1380         if (hapd->iconf->channel) {
1381                 freq = hostapd_hw_get_freq(hapd, hapd->iconf->channel);
1382                 wpa_printf(MSG_DEBUG, "Mode: %s  Channel: %d  "
1383                            "Frequency: %d MHz",
1384                            hostapd_hw_mode_txt(hapd->iconf->hw_mode),
1385                            hapd->iconf->channel, freq);
1386
1387                 if (hostapd_set_freq(hapd, hapd->iconf->hw_mode, freq,
1388                                      hapd->iconf->channel,
1389                                      hapd->iconf->ieee80211n,
1390                                      hapd->iconf->secondary_channel)) {
1391                         wpa_printf(MSG_ERROR, "Could not set channel for "
1392                                    "kernel driver");
1393                         return -1;
1394                 }
1395         }
1396
1397         hostapd_broadcast_wep_clear(hapd);
1398         if (hostapd_setup_encryption(hapd->conf->iface, hapd))
1399                 return -1;
1400
1401         hostapd_set_beacon_int(hapd, hapd->iconf->beacon_int);
1402         ieee802_11_set_beacon(hapd);
1403
1404         if (hapd->iconf->rts_threshold > -1 &&
1405             hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) {
1406                 wpa_printf(MSG_ERROR, "Could not set RTS threshold for "
1407                            "kernel driver");
1408                 return -1;
1409         }
1410
1411         if (hapd->iconf->fragm_threshold > -1 &&
1412             hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) {
1413                 wpa_printf(MSG_ERROR, "Could not set fragmentation threshold "
1414                            "for kernel driver");
1415                 return -1;
1416         }
1417
1418         prev_addr = hapd->own_addr;
1419
1420         for (j = 0; j < iface->num_bss; j++) {
1421                 hapd = iface->bss[j];
1422                 if (j)
1423                         os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
1424                 if (hostapd_setup_bss(hapd, j == 0))
1425                         return -1;
1426                 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0)
1427                         prev_addr = hapd->own_addr;
1428         }
1429
1430         hostapd_tx_queue_params(iface);
1431
1432         ap_list_init(iface);
1433
1434         if (hostapd_driver_commit(hapd) < 0) {
1435                 wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
1436                            "configuration", __func__);
1437                 return -1;
1438         }
1439
1440         return 0;
1441 }
1442
1443
1444 /**
1445  * hostapd_setup_interface - Setup of an interface
1446  * @iface: Pointer to interface data.
1447  * Returns: 0 on success, -1 on failure
1448  *
1449  * Initializes the driver interface, validates the configuration,
1450  * and sets driver parameters based on the configuration.
1451  * Flushes old stations, sets the channel, encryption,
1452  * beacons, and WDS links based on the configuration.
1453  */
1454 int hostapd_setup_interface(struct hostapd_iface *iface)
1455 {
1456         int ret;
1457
1458         ret = setup_interface(iface);
1459         if (ret) {
1460                 wpa_printf(MSG_DEBUG, "%s: Unable to setup interface.",
1461                            iface->bss[0]->conf->iface);
1462                 eloop_terminate();
1463                 return -1;
1464         } else if (!hostapd_drv_none(iface->bss[0])) {
1465                 wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
1466                            iface->bss[0]->conf->iface);
1467         }
1468
1469         return 0;
1470 }
1471
1472
1473 /**
1474  * hostapd_alloc_bss_data - Allocate and initialize per-BSS data
1475  * @hapd_iface: Pointer to interface data
1476  * @conf: Pointer to per-interface configuration
1477  * @bss: Pointer to per-BSS configuration for this BSS
1478  * Returns: Pointer to allocated BSS data
1479  *
1480  * This function is used to allocate per-BSS data structure. This data will be
1481  * freed after hostapd_cleanup() is called for it during interface
1482  * deinitialization.
1483  */
1484 struct hostapd_data *
1485 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
1486                        struct hostapd_config *conf,
1487                        struct hostapd_bss_config *bss)
1488 {
1489         struct hostapd_data *hapd;
1490
1491         hapd = os_zalloc(sizeof(*hapd));
1492         if (hapd == NULL)
1493                 return NULL;
1494
1495         hapd->iconf = conf;
1496         hapd->conf = bss;
1497         hapd->iface = hapd_iface;
1498
1499         if (hapd->conf->individual_wep_key_len > 0) {
1500                 /* use key0 in individual key and key1 in broadcast key */
1501                 hapd->default_wep_key_idx = 1;
1502         }
1503
1504 #ifdef EAP_TLS_FUNCS
1505         if (hapd->conf->eap_server &&
1506             (hapd->conf->ca_cert || hapd->conf->server_cert ||
1507              hapd->conf->dh_file)) {
1508                 struct tls_connection_params params;
1509
1510                 hapd->ssl_ctx = tls_init(NULL);
1511                 if (hapd->ssl_ctx == NULL) {
1512                         wpa_printf(MSG_ERROR, "Failed to initialize TLS");
1513                         goto fail;
1514                 }
1515
1516                 os_memset(&params, 0, sizeof(params));
1517                 params.ca_cert = hapd->conf->ca_cert;
1518                 params.client_cert = hapd->conf->server_cert;
1519                 params.private_key = hapd->conf->private_key;
1520                 params.private_key_passwd = hapd->conf->private_key_passwd;
1521                 params.dh_file = hapd->conf->dh_file;
1522
1523                 if (tls_global_set_params(hapd->ssl_ctx, &params)) {
1524                         wpa_printf(MSG_ERROR, "Failed to set TLS parameters");
1525                         goto fail;
1526                 }
1527
1528                 if (tls_global_set_verify(hapd->ssl_ctx,
1529                                           hapd->conf->check_crl)) {
1530                         wpa_printf(MSG_ERROR, "Failed to enable check_crl");
1531                         goto fail;
1532                 }
1533         }
1534 #endif /* EAP_TLS_FUNCS */
1535
1536 #ifdef EAP_SERVER
1537         if (hapd->conf->eap_sim_db) {
1538                 hapd->eap_sim_db_priv =
1539                         eap_sim_db_init(hapd->conf->eap_sim_db,
1540                                         hostapd_sim_db_cb, hapd);
1541                 if (hapd->eap_sim_db_priv == NULL) {
1542                         wpa_printf(MSG_ERROR, "Failed to initialize EAP-SIM "
1543                                    "database interface");
1544                         goto fail;
1545                 }
1546         }
1547 #endif /* EAP_SERVER */
1548
1549         hapd->driver = hapd->iconf->driver;
1550
1551         return hapd;
1552
1553 #if defined(EAP_TLS_FUNCS) || defined(EAP_SERVER)
1554 fail:
1555 #endif
1556         /* TODO: cleanup allocated resources(?) */
1557         os_free(hapd);
1558         return NULL;
1559 }
1560
1561
1562 void hostapd_interface_deinit(struct hostapd_iface *iface)
1563 {
1564         size_t j;
1565
1566         if (iface == NULL)
1567                 return;
1568
1569         hostapd_cleanup_iface_pre(iface);
1570         for (j = 0; j < iface->num_bss; j++) {
1571                 struct hostapd_data *hapd = iface->bss[j];
1572                 hostapd_free_stas(hapd);
1573                 hostapd_flush_old_stations(hapd);
1574                 hostapd_cleanup(hapd);
1575                 if (j == iface->num_bss - 1 && hapd->driver)
1576                         hostapd_driver_deinit(hapd);
1577         }
1578         for (j = 0; j < iface->num_bss; j++)
1579                 os_free(iface->bss[j]);
1580         hostapd_cleanup_iface(iface);
1581 }