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