contrib/hostapd/src/ap/ieee802_11_auth.c

   1 /*
   2  * hostapd / IEEE 802.11 authentication (ACL)
   3  * Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  *
   8  * Access control list for IEEE 802.11 authentication can uses statically
   9  * configured ACL from configuration files or an external RADIUS server.
  10  * Results from external RADIUS queries are cached to allow faster
  11  * authentication frame processing.
  12  */
  13
  14 #include "utils/includes.h"
  15
  16 #include "utils/common.h"
  17 #include "utils/eloop.h"
  18 #include "crypto/sha1.h"
  19 #include "radius/radius.h"
  20 #include "radius/radius_client.h"
  21 #include "hostapd.h"
  22 #include "ap_config.h"
  23 #include "ap_drv_ops.h"
  24 #include "ieee802_11.h"
  25 #include "ieee802_1x.h"
  26 #include "ieee802_11_auth.h"
  27
  28 #define RADIUS_ACL_TIMEOUT 30
  29
  30
  31 struct hostapd_cached_radius_acl {
  32         struct os_reltime timestamp;
  33         macaddr addr;
  34         int accepted; /* HOSTAPD_ACL_* */
  35         struct hostapd_cached_radius_acl *next;
  36         u32 session_timeout;
  37         u32 acct_interim_interval;
  38         int vlan_id;
  39         struct hostapd_sta_wpa_psk_short *psk;
  40         char *identity;
  41         char *radius_cui;
  42 };
  43
  44
  45 struct hostapd_acl_query_data {
  46         struct os_reltime timestamp;
  47         u8 radius_id;
  48         macaddr addr;
  49         u8 *auth_msg; /* IEEE 802.11 authentication frame from station */
  50         size_t auth_msg_len;
  51         struct hostapd_acl_query_data *next;
  52 };
  53
  54
  55 #ifndef CONFIG_NO_RADIUS
  56 static void hostapd_acl_cache_free_entry(struct hostapd_cached_radius_acl *e)
  57 {
  58         os_free(e->identity);
  59         os_free(e->radius_cui);
  60         hostapd_free_psk_list(e->psk);
  61         os_free(e);
  62 }
  63
  64
  65 static void hostapd_acl_cache_free(struct hostapd_cached_radius_acl *acl_cache)
  66 {
  67         struct hostapd_cached_radius_acl *prev;
  68
  69         while (acl_cache) {
  70                 prev = acl_cache;
  71                 acl_cache = acl_cache->next;
  72                 hostapd_acl_cache_free_entry(prev);
  73         }
  74 }
  75
  76
  77 static void copy_psk_list(struct hostapd_sta_wpa_psk_short **psk,
  78                           struct hostapd_sta_wpa_psk_short *src)
  79 {
  80         struct hostapd_sta_wpa_psk_short **copy_to;
  81         struct hostapd_sta_wpa_psk_short *copy_from;
  82
  83         /* Copy PSK linked list */
  84         copy_to = psk;
  85         copy_from = src;
  86         while (copy_from && copy_to) {
  87                 *copy_to = os_zalloc(sizeof(struct hostapd_sta_wpa_psk_short));
  88                 if (*copy_to == NULL)
  89                         break;
  90                 os_memcpy(*copy_to, copy_from,
  91                           sizeof(struct hostapd_sta_wpa_psk_short));
  92                 copy_from = copy_from->next;
  93                 copy_to = &((*copy_to)->next);
  94         }
  95         if (copy_to)
  96                 *copy_to = NULL;
  97 }
  98
  99
 100 static int hostapd_acl_cache_get(struct hostapd_data *hapd, const u8 *addr,
 101                                  u32 *session_timeout,
 102                                  u32 *acct_interim_interval, int *vlan_id,
 103                                  struct hostapd_sta_wpa_psk_short **psk,
 104                                  char **identity, char **radius_cui)
 105 {
 106         struct hostapd_cached_radius_acl *entry;
 107         struct os_reltime now;
 108
 109         os_get_reltime(&now);
 110
 111         for (entry = hapd->acl_cache; entry; entry = entry->next) {
 112                 if (os_memcmp(entry->addr, addr, ETH_ALEN) != 0)
 113                         continue;
 114
 115                 if (os_reltime_expired(&now, &entry->timestamp,
 116                                        RADIUS_ACL_TIMEOUT))
 117                         return -1; /* entry has expired */
 118                 if (entry->accepted == HOSTAPD_ACL_ACCEPT_TIMEOUT)
 119                         if (session_timeout)
 120                                 *session_timeout = entry->session_timeout;
 121                 if (acct_interim_interval)
 122                         *acct_interim_interval =
 123                                 entry->acct_interim_interval;
 124                 if (vlan_id)
 125                         *vlan_id = entry->vlan_id;
 126                 copy_psk_list(psk, entry->psk);
 127                 if (identity) {
 128                         if (entry->identity)
 129                                 *identity = os_strdup(entry->identity);
 130                         else
 131                                 *identity = NULL;
 132                 }
 133                 if (radius_cui) {
 134                         if (entry->radius_cui)
 135                                 *radius_cui = os_strdup(entry->radius_cui);
 136                         else
 137                                 *radius_cui = NULL;
 138                 }
 139                 return entry->accepted;
 140         }
 141
 142         return -1;
 143 }
 144 #endif /* CONFIG_NO_RADIUS */
 145
 146
 147 static void hostapd_acl_query_free(struct hostapd_acl_query_data *query)
 148 {
 149         if (query == NULL)
 150                 return;
 151         os_free(query->auth_msg);
 152         os_free(query);
 153 }
 154
 155
 156 #ifndef CONFIG_NO_RADIUS
 157 static int hostapd_radius_acl_query(struct hostapd_data *hapd, const u8 *addr,
 158                                     struct hostapd_acl_query_data *query)
 159 {
 160         struct radius_msg *msg;
 161         char buf[128];
 162
 163         query->radius_id = radius_client_get_id(hapd->radius);
 164         msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST, query->radius_id);
 165         if (msg == NULL)
 166                 return -1;
 167
 168         radius_msg_make_authenticator(msg, addr, ETH_ALEN);
 169
 170         os_snprintf(buf, sizeof(buf), RADIUS_ADDR_FORMAT, MAC2STR(addr));
 171         if (!radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME, (u8 *) buf,
 172                                  os_strlen(buf))) {
 173                 wpa_printf(MSG_DEBUG, "Could not add User-Name");
 174                 goto fail;
 175         }
 176
 177         if (!radius_msg_add_attr_user_password(
 178                     msg, (u8 *) buf, os_strlen(buf),
 179                     hapd->conf->radius->auth_server->shared_secret,
 180                     hapd->conf->radius->auth_server->shared_secret_len)) {
 181                 wpa_printf(MSG_DEBUG, "Could not add User-Password");
 182                 goto fail;
 183         }
 184
 185         if (add_common_radius_attr(hapd, hapd->conf->radius_auth_req_attr,
 186                                    NULL, msg) < 0)
 187                 goto fail;
 188
 189         os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
 190                     MAC2STR(addr));
 191         if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
 192                                  (u8 *) buf, os_strlen(buf))) {
 193                 wpa_printf(MSG_DEBUG, "Could not add Calling-Station-Id");
 194                 goto fail;
 195         }
 196
 197         os_snprintf(buf, sizeof(buf), "CONNECT 11Mbps 802.11b");
 198         if (!radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
 199                                  (u8 *) buf, os_strlen(buf))) {
 200                 wpa_printf(MSG_DEBUG, "Could not add Connect-Info");
 201                 goto fail;
 202         }
 203
 204         if (radius_client_send(hapd->radius, msg, RADIUS_AUTH, addr) < 0)
 205                 goto fail;
 206         return 0;
 207
 208  fail:
 209         radius_msg_free(msg);
 210         return -1;
 211 }
 212 #endif /* CONFIG_NO_RADIUS */
 213
 214
 215 /**
 216  * hostapd_allowed_address - Check whether a specified STA can be authenticated
 217  * @hapd: hostapd BSS data
 218  * @addr: MAC address of the STA
 219  * @msg: Authentication message
 220  * @len: Length of msg in octets
 221  * @session_timeout: Buffer for returning session timeout (from RADIUS)
 222  * @acct_interim_interval: Buffer for returning account interval (from RADIUS)
 223  * @vlan_id: Buffer for returning VLAN ID
 224  * @psk: Linked list buffer for returning WPA PSK
 225  * @identity: Buffer for returning identity (from RADIUS)
 226  * @radius_cui: Buffer for returning CUI (from RADIUS)
 227  * Returns: HOSTAPD_ACL_ACCEPT, HOSTAPD_ACL_REJECT, or HOSTAPD_ACL_PENDING
 228  *
 229  * The caller is responsible for freeing the returned *identity and *radius_cui
 230  * values with os_free().
 231  */
 232 int hostapd_allowed_address(struct hostapd_data *hapd, const u8 *addr,
 233                             const u8 *msg, size_t len, u32 *session_timeout,
 234                             u32 *acct_interim_interval, int *vlan_id,
 235                             struct hostapd_sta_wpa_psk_short **psk,
 236                             char **identity, char **radius_cui)
 237 {
 238         if (session_timeout)
 239                 *session_timeout = 0;
 240         if (acct_interim_interval)
 241                 *acct_interim_interval = 0;
 242         if (vlan_id)
 243                 *vlan_id = 0;
 244         if (psk)
 245                 *psk = NULL;
 246         if (identity)
 247                 *identity = NULL;
 248         if (radius_cui)
 249                 *radius_cui = NULL;
 250
 251         if (hostapd_maclist_found(hapd->conf->accept_mac,
 252                                   hapd->conf->num_accept_mac, addr, vlan_id))
 253                 return HOSTAPD_ACL_ACCEPT;
 254
 255         if (hostapd_maclist_found(hapd->conf->deny_mac,
 256                                   hapd->conf->num_deny_mac, addr, vlan_id))
 257                 return HOSTAPD_ACL_REJECT;
 258
 259         if (hapd->conf->macaddr_acl == ACCEPT_UNLESS_DENIED)
 260                 return HOSTAPD_ACL_ACCEPT;
 261         if (hapd->conf->macaddr_acl == DENY_UNLESS_ACCEPTED)
 262                 return HOSTAPD_ACL_REJECT;
 263
 264         if (hapd->conf->macaddr_acl == USE_EXTERNAL_RADIUS_AUTH) {
 265 #ifdef CONFIG_NO_RADIUS
 266                 return HOSTAPD_ACL_REJECT;
 267 #else /* CONFIG_NO_RADIUS */
 268                 struct hostapd_acl_query_data *query;
 269
 270                 /* Check whether ACL cache has an entry for this station */
 271                 int res = hostapd_acl_cache_get(hapd, addr, session_timeout,
 272                                                 acct_interim_interval,
 273                                                 vlan_id, psk,
 274                                                 identity, radius_cui);
 275                 if (res == HOSTAPD_ACL_ACCEPT ||
 276                     res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
 277                         return res;
 278                 if (res == HOSTAPD_ACL_REJECT)
 279                         return HOSTAPD_ACL_REJECT;
 280
 281                 query = hapd->acl_queries;
 282                 while (query) {
 283                         if (os_memcmp(query->addr, addr, ETH_ALEN) == 0) {
 284                                 /* pending query in RADIUS retransmit queue;
 285                                  * do not generate a new one */
 286                                 if (identity) {
 287                                         os_free(*identity);
 288                                         *identity = NULL;
 289                                 }
 290                                 if (radius_cui) {
 291                                         os_free(*radius_cui);
 292                                         *radius_cui = NULL;
 293                                 }
 294                                 return HOSTAPD_ACL_PENDING;
 295                         }
 296                         query = query->next;
 297                 }
 298
 299                 if (!hapd->conf->radius->auth_server)
 300                         return HOSTAPD_ACL_REJECT;
 301
 302                 /* No entry in the cache - query external RADIUS server */
 303                 query = os_zalloc(sizeof(*query));
 304                 if (query == NULL) {
 305                         wpa_printf(MSG_ERROR, "malloc for query data failed");
 306                         return HOSTAPD_ACL_REJECT;
 307                 }
 308                 os_get_reltime(&query->timestamp);
 309                 os_memcpy(query->addr, addr, ETH_ALEN);
 310                 if (hostapd_radius_acl_query(hapd, addr, query)) {
 311                         wpa_printf(MSG_DEBUG, "Failed to send Access-Request "
 312                                    "for ACL query.");
 313                         hostapd_acl_query_free(query);
 314                         return HOSTAPD_ACL_REJECT;
 315                 }
 316
 317                 query->auth_msg = os_malloc(len);
 318                 if (query->auth_msg == NULL) {
 319                         wpa_printf(MSG_ERROR, "Failed to allocate memory for "
 320                                    "auth frame.");
 321                         hostapd_acl_query_free(query);
 322                         return HOSTAPD_ACL_REJECT;
 323                 }
 324                 os_memcpy(query->auth_msg, msg, len);
 325                 query->auth_msg_len = len;
 326                 query->next = hapd->acl_queries;
 327                 hapd->acl_queries = query;
 328
 329                 /* Queued data will be processed in hostapd_acl_recv_radius()
 330                  * when RADIUS server replies to the sent Access-Request. */
 331                 return HOSTAPD_ACL_PENDING;
 332 #endif /* CONFIG_NO_RADIUS */
 333         }
 334
 335         return HOSTAPD_ACL_REJECT;
 336 }
 337
 338
 339 #ifndef CONFIG_NO_RADIUS
 340 static void hostapd_acl_expire_cache(struct hostapd_data *hapd,
 341                                      struct os_reltime *now)
 342 {
 343         struct hostapd_cached_radius_acl *prev, *entry, *tmp;
 344
 345         prev = NULL;
 346         entry = hapd->acl_cache;
 347
 348         while (entry) {
 349                 if (os_reltime_expired(now, &entry->timestamp,
 350                                        RADIUS_ACL_TIMEOUT)) {
 351                         wpa_printf(MSG_DEBUG, "Cached ACL entry for " MACSTR
 352                                    " has expired.", MAC2STR(entry->addr));
 353                         if (prev)
 354                                 prev->next = entry->next;
 355                         else
 356                                 hapd->acl_cache = entry->next;
 357                         hostapd_drv_set_radius_acl_expire(hapd, entry->addr);
 358                         tmp = entry;
 359                         entry = entry->next;
 360                         hostapd_acl_cache_free_entry(tmp);
 361                         continue;
 362                 }
 363
 364                 prev = entry;
 365                 entry = entry->next;
 366         }
 367 }
 368
 369
 370 static void hostapd_acl_expire_queries(struct hostapd_data *hapd,
 371                                        struct os_reltime *now)
 372 {
 373         struct hostapd_acl_query_data *prev, *entry, *tmp;
 374
 375         prev = NULL;
 376         entry = hapd->acl_queries;
 377
 378         while (entry) {
 379                 if (os_reltime_expired(now, &entry->timestamp,
 380                                        RADIUS_ACL_TIMEOUT)) {
 381                         wpa_printf(MSG_DEBUG, "ACL query for " MACSTR
 382                                    " has expired.", MAC2STR(entry->addr));
 383                         if (prev)
 384                                 prev->next = entry->next;
 385                         else
 386                                 hapd->acl_queries = entry->next;
 387
 388                         tmp = entry;
 389                         entry = entry->next;
 390                         hostapd_acl_query_free(tmp);
 391                         continue;
 392                 }
 393
 394                 prev = entry;
 395                 entry = entry->next;
 396         }
 397 }
 398
 399
 400 /**
 401  * hostapd_acl_expire - ACL cache expiration callback
 402  * @eloop_ctx: struct hostapd_data *
 403  * @timeout_ctx: Not used
 404  */
 405 static void hostapd_acl_expire(void *eloop_ctx, void *timeout_ctx)
 406 {
 407         struct hostapd_data *hapd = eloop_ctx;
 408         struct os_reltime now;
 409
 410         os_get_reltime(&now);
 411         hostapd_acl_expire_cache(hapd, &now);
 412         hostapd_acl_expire_queries(hapd, &now);
 413
 414         eloop_register_timeout(10, 0, hostapd_acl_expire, hapd, NULL);
 415 }
 416
 417
 418 static void decode_tunnel_passwords(struct hostapd_data *hapd,
 419                                     const u8 *shared_secret,
 420                                     size_t shared_secret_len,
 421                                     struct radius_msg *msg,
 422                                     struct radius_msg *req,
 423                                     struct hostapd_cached_radius_acl *cache)
 424 {
 425         int passphraselen;
 426         char *passphrase, *strpassphrase;
 427         size_t i;
 428         struct hostapd_sta_wpa_psk_short *psk;
 429
 430         /*
 431          * Decode all tunnel passwords as PSK and save them into a linked list.
 432          */
 433         for (i = 0; ; i++) {
 434                 passphrase = radius_msg_get_tunnel_password(
 435                         msg, &passphraselen, shared_secret, shared_secret_len,
 436                         req, i);
 437                 /*
 438                  * Passphrase is NULL iff there is no i-th Tunnel-Password
 439                  * attribute in msg.
 440                  */
 441                 if (passphrase == NULL)
 442                         break;
 443                 /*
 444                  * passphrase does not contain the NULL termination.
 445                  * Add it here as pbkdf2_sha1() requires it.
 446                  */
 447                 strpassphrase = os_zalloc(passphraselen + 1);
 448                 psk = os_zalloc(sizeof(struct hostapd_sta_wpa_psk_short));
 449                 if (strpassphrase && psk) {
 450                         os_memcpy(strpassphrase, passphrase, passphraselen);
 451                         pbkdf2_sha1(strpassphrase,
 452                                     hapd->conf->ssid.ssid,
 453                                     hapd->conf->ssid.ssid_len, 4096,
 454                                     psk->psk, PMK_LEN);
 455                         psk->next = cache->psk;
 456                         cache->psk = psk;
 457                         psk = NULL;
 458                 }
 459                 os_free(strpassphrase);
 460                 os_free(psk);
 461                 os_free(passphrase);
 462         }
 463 }
 464
 465
 466 /**
 467  * hostapd_acl_recv_radius - Process incoming RADIUS Authentication messages
 468  * @msg: RADIUS response message
 469  * @req: RADIUS request message
 470  * @shared_secret: RADIUS shared secret
 471  * @shared_secret_len: Length of shared_secret in octets
 472  * @data: Context data (struct hostapd_data *)
 473  * Returns: RADIUS_RX_PROCESSED if RADIUS message was a reply to ACL query (and
 474  * was processed here) or RADIUS_RX_UNKNOWN if not.
 475  */
 476 static RadiusRxResult
 477 hostapd_acl_recv_radius(struct radius_msg *msg, struct radius_msg *req,
 478                         const u8 *shared_secret, size_t shared_secret_len,
 479                         void *data)
 480 {
 481         struct hostapd_data *hapd = data;
 482         struct hostapd_acl_query_data *query, *prev;
 483         struct hostapd_cached_radius_acl *cache;
 484         struct radius_hdr *hdr = radius_msg_get_hdr(msg);
 485
 486         query = hapd->acl_queries;
 487         prev = NULL;
 488         while (query) {
 489                 if (query->radius_id == hdr->identifier)
 490                         break;
 491                 prev = query;
 492                 query = query->next;
 493         }
 494         if (query == NULL)
 495                 return RADIUS_RX_UNKNOWN;
 496
 497         wpa_printf(MSG_DEBUG, "Found matching Access-Request for RADIUS "
 498                    "message (id=%d)", query->radius_id);
 499
 500         if (radius_msg_verify(msg, shared_secret, shared_secret_len, req, 0)) {
 501                 wpa_printf(MSG_INFO, "Incoming RADIUS packet did not have "
 502                            "correct authenticator - dropped\n");
 503                 return RADIUS_RX_INVALID_AUTHENTICATOR;
 504         }
 505
 506         if (hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
 507             hdr->code != RADIUS_CODE_ACCESS_REJECT) {
 508                 wpa_printf(MSG_DEBUG, "Unknown RADIUS message code %d to ACL "
 509                            "query", hdr->code);
 510                 return RADIUS_RX_UNKNOWN;
 511         }
 512
 513         /* Insert Accept/Reject info into ACL cache */
 514         cache = os_zalloc(sizeof(*cache));
 515         if (cache == NULL) {
 516                 wpa_printf(MSG_DEBUG, "Failed to add ACL cache entry");
 517                 goto done;
 518         }
 519         os_get_reltime(&cache->timestamp);
 520         os_memcpy(cache->addr, query->addr, sizeof(cache->addr));
 521         if (hdr->code == RADIUS_CODE_ACCESS_ACCEPT) {
 522                 u8 *buf;
 523                 size_t len;
 524
 525                 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_SESSION_TIMEOUT,
 526                                               &cache->session_timeout) == 0)
 527                         cache->accepted = HOSTAPD_ACL_ACCEPT_TIMEOUT;
 528                 else
 529                         cache->accepted = HOSTAPD_ACL_ACCEPT;
 530
 531                 if (radius_msg_get_attr_int32(
 532                             msg, RADIUS_ATTR_ACCT_INTERIM_INTERVAL,
 533                             &cache->acct_interim_interval) == 0 &&
 534                     cache->acct_interim_interval < 60) {
 535                         wpa_printf(MSG_DEBUG, "Ignored too small "
 536                                    "Acct-Interim-Interval %d for STA " MACSTR,
 537                                    cache->acct_interim_interval,
 538                                    MAC2STR(query->addr));
 539                         cache->acct_interim_interval = 0;
 540                 }
 541
 542                 cache->vlan_id = radius_msg_get_vlanid(msg);
 543
 544                 decode_tunnel_passwords(hapd, shared_secret, shared_secret_len,
 545                                         msg, req, cache);
 546
 547                 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME,
 548                                             &buf, &len, NULL) == 0) {
 549                         cache->identity = os_zalloc(len + 1);
 550                         if (cache->identity)
 551                                 os_memcpy(cache->identity, buf, len);
 552                 }
 553                 if (radius_msg_get_attr_ptr(
 554                             msg, RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
 555                             &buf, &len, NULL) == 0) {
 556                         cache->radius_cui = os_zalloc(len + 1);
 557                         if (cache->radius_cui)
 558                                 os_memcpy(cache->radius_cui, buf, len);
 559                 }
 560
 561                 if (hapd->conf->wpa_psk_radius == PSK_RADIUS_REQUIRED &&
 562                     !cache->psk)
 563                         cache->accepted = HOSTAPD_ACL_REJECT;
 564         } else
 565                 cache->accepted = HOSTAPD_ACL_REJECT;
 566         cache->next = hapd->acl_cache;
 567         hapd->acl_cache = cache;
 568
 569 #ifdef CONFIG_DRIVER_RADIUS_ACL
 570         hostapd_drv_set_radius_acl_auth(hapd, query->addr, cache->accepted,
 571                                         cache->session_timeout);
 572 #else /* CONFIG_DRIVER_RADIUS_ACL */
 573 #ifdef NEED_AP_MLME
 574         /* Re-send original authentication frame for 802.11 processing */
 575         wpa_printf(MSG_DEBUG, "Re-sending authentication frame after "
 576                    "successful RADIUS ACL query");
 577         ieee802_11_mgmt(hapd, query->auth_msg, query->auth_msg_len, NULL);
 578 #endif /* NEED_AP_MLME */
 579 #endif /* CONFIG_DRIVER_RADIUS_ACL */
 580
 581  done:
 582         if (prev == NULL)
 583                 hapd->acl_queries = query->next;
 584         else
 585                 prev->next = query->next;
 586
 587         hostapd_acl_query_free(query);
 588
 589         return RADIUS_RX_PROCESSED;
 590 }
 591 #endif /* CONFIG_NO_RADIUS */
 592
 593
 594 /**
 595  * hostapd_acl_init: Initialize IEEE 802.11 ACL
 596  * @hapd: hostapd BSS data
 597  * Returns: 0 on success, -1 on failure
 598  */
 599 int hostapd_acl_init(struct hostapd_data *hapd)
 600 {
 601 #ifndef CONFIG_NO_RADIUS
 602         if (radius_client_register(hapd->radius, RADIUS_AUTH,
 603                                    hostapd_acl_recv_radius, hapd))
 604                 return -1;
 605
 606         eloop_register_timeout(10, 0, hostapd_acl_expire, hapd, NULL);
 607 #endif /* CONFIG_NO_RADIUS */
 608
 609         return 0;
 610 }
 611
 612
 613 /**
 614  * hostapd_acl_deinit - Deinitialize IEEE 802.11 ACL
 615  * @hapd: hostapd BSS data
 616  */
 617 void hostapd_acl_deinit(struct hostapd_data *hapd)
 618 {
 619         struct hostapd_acl_query_data *query, *prev;
 620
 621 #ifndef CONFIG_NO_RADIUS
 622         eloop_cancel_timeout(hostapd_acl_expire, hapd, NULL);
 623
 624         hostapd_acl_cache_free(hapd->acl_cache);
 625 #endif /* CONFIG_NO_RADIUS */
 626
 627         query = hapd->acl_queries;
 628         while (query) {
 629                 prev = query;
 630                 query = query->next;
 631                 hostapd_acl_query_free(prev);
 632         }
 633 }
 634
 635
 636 void hostapd_free_psk_list(struct hostapd_sta_wpa_psk_short *psk)
 637 {
 638         while (psk) {
 639                 struct hostapd_sta_wpa_psk_short *prev = psk;
 640                 psk = psk->next;
 641                 os_free(prev);
 642         }
 643 }