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         struct vlan_description 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,
 103                                  struct vlan_description *vlan_id,
 104                                  struct hostapd_sta_wpa_psk_short **psk,
 105                                  char **identity, char **radius_cui)
 106 {
 107         struct hostapd_cached_radius_acl *entry;
 108         struct os_reltime now;
 109
 110         os_get_reltime(&now);
 111
 112         for (entry = hapd->acl_cache; entry; entry = entry->next) {
 113                 if (os_memcmp(entry->addr, addr, ETH_ALEN) != 0)
 114                         continue;
 115
 116                 if (os_reltime_expired(&now, &entry->timestamp,
 117                                        RADIUS_ACL_TIMEOUT))
 118                         return -1; /* entry has expired */
 119                 if (entry->accepted == HOSTAPD_ACL_ACCEPT_TIMEOUT)
 120                         if (session_timeout)
 121                                 *session_timeout = entry->session_timeout;
 122                 if (acct_interim_interval)
 123                         *acct_interim_interval =
 124                                 entry->acct_interim_interval;
 125                 if (vlan_id)
 126                         *vlan_id = entry->vlan_id;
 127                 copy_psk_list(psk, entry->psk);
 128                 if (identity) {
 129                         if (entry->identity)
 130                                 *identity = os_strdup(entry->identity);
 131                         else
 132                                 *identity = NULL;
 133                 }
 134                 if (radius_cui) {
 135                         if (entry->radius_cui)
 136                                 *radius_cui = os_strdup(entry->radius_cui);
 137                         else
 138                                 *radius_cui = NULL;
 139                 }
 140                 return entry->accepted;
 141         }
 142
 143         return -1;
 144 }
 145 #endif /* CONFIG_NO_RADIUS */
 146
 147
 148 static void hostapd_acl_query_free(struct hostapd_acl_query_data *query)
 149 {
 150         if (query == NULL)
 151                 return;
 152         os_free(query->auth_msg);
 153         os_free(query);
 154 }
 155
 156
 157 #ifndef CONFIG_NO_RADIUS
 158 static int hostapd_radius_acl_query(struct hostapd_data *hapd, const u8 *addr,
 159                                     struct hostapd_acl_query_data *query)
 160 {
 161         struct radius_msg *msg;
 162         char buf[128];
 163
 164         query->radius_id = radius_client_get_id(hapd->radius);
 165         msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST, query->radius_id);
 166         if (msg == NULL)
 167                 return -1;
 168
 169         if (radius_msg_make_authenticator(msg) < 0) {
 170                 wpa_printf(MSG_INFO, "Could not make Request Authenticator");
 171                 goto fail;
 172         }
 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_check_acl - Check a specified STA against accept/deny ACLs
 221  * @hapd: hostapd BSS data
 222  * @addr: MAC address of the STA
 223  * @vlan_id: Buffer for returning VLAN ID
 224  * Returns: HOSTAPD_ACL_ACCEPT, HOSTAPD_ACL_REJECT, or HOSTAPD_ACL_PENDING
 225  */
 226 int hostapd_check_acl(struct hostapd_data *hapd, const u8 *addr,
 227                       struct vlan_description *vlan_id)
 228 {
 229         if (hostapd_maclist_found(hapd->conf->accept_mac,
 230                                   hapd->conf->num_accept_mac, addr, vlan_id))
 231                 return HOSTAPD_ACL_ACCEPT;
 232
 233         if (hostapd_maclist_found(hapd->conf->deny_mac,
 234                                   hapd->conf->num_deny_mac, addr, vlan_id))
 235                 return HOSTAPD_ACL_REJECT;
 236
 237         if (hapd->conf->macaddr_acl == ACCEPT_UNLESS_DENIED)
 238                 return HOSTAPD_ACL_ACCEPT;
 239         if (hapd->conf->macaddr_acl == DENY_UNLESS_ACCEPTED)
 240                 return HOSTAPD_ACL_REJECT;
 241
 242         return HOSTAPD_ACL_PENDING;
 243 }
 244
 245
 246 /**
 247  * hostapd_allowed_address - Check whether a specified STA can be authenticated
 248  * @hapd: hostapd BSS data
 249  * @addr: MAC address of the STA
 250  * @msg: Authentication message
 251  * @len: Length of msg in octets
 252  * @session_timeout: Buffer for returning session timeout (from RADIUS)
 253  * @acct_interim_interval: Buffer for returning account interval (from RADIUS)
 254  * @vlan_id: Buffer for returning VLAN ID
 255  * @psk: Linked list buffer for returning WPA PSK
 256  * @identity: Buffer for returning identity (from RADIUS)
 257  * @radius_cui: Buffer for returning CUI (from RADIUS)
 258  * Returns: HOSTAPD_ACL_ACCEPT, HOSTAPD_ACL_REJECT, or HOSTAPD_ACL_PENDING
 259  *
 260  * The caller is responsible for freeing the returned *identity and *radius_cui
 261  * values with os_free().
 262  */
 263 int hostapd_allowed_address(struct hostapd_data *hapd, const u8 *addr,
 264                             const u8 *msg, size_t len, u32 *session_timeout,
 265                             u32 *acct_interim_interval,
 266                             struct vlan_description *vlan_id,
 267                             struct hostapd_sta_wpa_psk_short **psk,
 268                             char **identity, char **radius_cui)
 269 {
 270         int res;
 271
 272         if (session_timeout)
 273                 *session_timeout = 0;
 274         if (acct_interim_interval)
 275                 *acct_interim_interval = 0;
 276         if (vlan_id)
 277                 os_memset(vlan_id, 0, sizeof(*vlan_id));
 278         if (psk)
 279                 *psk = NULL;
 280         if (identity)
 281                 *identity = NULL;
 282         if (radius_cui)
 283                 *radius_cui = NULL;
 284
 285         res = hostapd_check_acl(hapd, addr, vlan_id);
 286         if (res != HOSTAPD_ACL_PENDING)
 287                 return res;
 288
 289         if (hapd->conf->macaddr_acl == USE_EXTERNAL_RADIUS_AUTH) {
 290 #ifdef CONFIG_NO_RADIUS
 291                 return HOSTAPD_ACL_REJECT;
 292 #else /* CONFIG_NO_RADIUS */
 293                 struct hostapd_acl_query_data *query;
 294
 295                 /* Check whether ACL cache has an entry for this station */
 296                 res = hostapd_acl_cache_get(hapd, addr, session_timeout,
 297                                             acct_interim_interval, vlan_id, psk,
 298                                             identity, radius_cui);
 299                 if (res == HOSTAPD_ACL_ACCEPT ||
 300                     res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
 301                         return res;
 302                 if (res == HOSTAPD_ACL_REJECT)
 303                         return HOSTAPD_ACL_REJECT;
 304
 305                 query = hapd->acl_queries;
 306                 while (query) {
 307                         if (os_memcmp(query->addr, addr, ETH_ALEN) == 0) {
 308                                 /* pending query in RADIUS retransmit queue;
 309                                  * do not generate a new one */
 310                                 if (identity) {
 311                                         os_free(*identity);
 312                                         *identity = NULL;
 313                                 }
 314                                 if (radius_cui) {
 315                                         os_free(*radius_cui);
 316                                         *radius_cui = NULL;
 317                                 }
 318                                 return HOSTAPD_ACL_PENDING;
 319                         }
 320                         query = query->next;
 321                 }
 322
 323                 if (!hapd->conf->radius->auth_server)
 324                         return HOSTAPD_ACL_REJECT;
 325
 326                 /* No entry in the cache - query external RADIUS server */
 327                 query = os_zalloc(sizeof(*query));
 328                 if (query == NULL) {
 329                         wpa_printf(MSG_ERROR, "malloc for query data failed");
 330                         return HOSTAPD_ACL_REJECT;
 331                 }
 332                 os_get_reltime(&query->timestamp);
 333                 os_memcpy(query->addr, addr, ETH_ALEN);
 334                 if (hostapd_radius_acl_query(hapd, addr, query)) {
 335                         wpa_printf(MSG_DEBUG, "Failed to send Access-Request "
 336                                    "for ACL query.");
 337                         hostapd_acl_query_free(query);
 338                         return HOSTAPD_ACL_REJECT;
 339                 }
 340
 341                 query->auth_msg = os_malloc(len);
 342                 if (query->auth_msg == NULL) {
 343                         wpa_printf(MSG_ERROR, "Failed to allocate memory for "
 344                                    "auth frame.");
 345                         hostapd_acl_query_free(query);
 346                         return HOSTAPD_ACL_REJECT;
 347                 }
 348                 os_memcpy(query->auth_msg, msg, len);
 349                 query->auth_msg_len = len;
 350                 query->next = hapd->acl_queries;
 351                 hapd->acl_queries = query;
 352
 353                 /* Queued data will be processed in hostapd_acl_recv_radius()
 354                  * when RADIUS server replies to the sent Access-Request. */
 355                 return HOSTAPD_ACL_PENDING;
 356 #endif /* CONFIG_NO_RADIUS */
 357         }
 358
 359         return HOSTAPD_ACL_REJECT;
 360 }
 361
 362
 363 #ifndef CONFIG_NO_RADIUS
 364 static void hostapd_acl_expire_cache(struct hostapd_data *hapd,
 365                                      struct os_reltime *now)
 366 {
 367         struct hostapd_cached_radius_acl *prev, *entry, *tmp;
 368
 369         prev = NULL;
 370         entry = hapd->acl_cache;
 371
 372         while (entry) {
 373                 if (os_reltime_expired(now, &entry->timestamp,
 374                                        RADIUS_ACL_TIMEOUT)) {
 375                         wpa_printf(MSG_DEBUG, "Cached ACL entry for " MACSTR
 376                                    " has expired.", MAC2STR(entry->addr));
 377                         if (prev)
 378                                 prev->next = entry->next;
 379                         else
 380                                 hapd->acl_cache = entry->next;
 381                         hostapd_drv_set_radius_acl_expire(hapd, entry->addr);
 382                         tmp = entry;
 383                         entry = entry->next;
 384                         hostapd_acl_cache_free_entry(tmp);
 385                         continue;
 386                 }
 387
 388                 prev = entry;
 389                 entry = entry->next;
 390         }
 391 }
 392
 393
 394 static void hostapd_acl_expire_queries(struct hostapd_data *hapd,
 395                                        struct os_reltime *now)
 396 {
 397         struct hostapd_acl_query_data *prev, *entry, *tmp;
 398
 399         prev = NULL;
 400         entry = hapd->acl_queries;
 401
 402         while (entry) {
 403                 if (os_reltime_expired(now, &entry->timestamp,
 404                                        RADIUS_ACL_TIMEOUT)) {
 405                         wpa_printf(MSG_DEBUG, "ACL query for " MACSTR
 406                                    " has expired.", MAC2STR(entry->addr));
 407                         if (prev)
 408                                 prev->next = entry->next;
 409                         else
 410                                 hapd->acl_queries = entry->next;
 411
 412                         tmp = entry;
 413                         entry = entry->next;
 414                         hostapd_acl_query_free(tmp);
 415                         continue;
 416                 }
 417
 418                 prev = entry;
 419                 entry = entry->next;
 420         }
 421 }
 422
 423
 424 /**
 425  * hostapd_acl_expire - ACL cache expiration callback
 426  * @hapd: struct hostapd_data *
 427  */
 428 void hostapd_acl_expire(struct hostapd_data *hapd)
 429 {
 430         struct os_reltime now;
 431
 432         os_get_reltime(&now);
 433         hostapd_acl_expire_cache(hapd, &now);
 434         hostapd_acl_expire_queries(hapd, &now);
 435 }
 436
 437
 438 static void decode_tunnel_passwords(struct hostapd_data *hapd,
 439                                     const u8 *shared_secret,
 440                                     size_t shared_secret_len,
 441                                     struct radius_msg *msg,
 442                                     struct radius_msg *req,
 443                                     struct hostapd_cached_radius_acl *cache)
 444 {
 445         int passphraselen;
 446         char *passphrase, *strpassphrase;
 447         size_t i;
 448         struct hostapd_sta_wpa_psk_short *psk;
 449
 450         /*
 451          * Decode all tunnel passwords as PSK and save them into a linked list.
 452          */
 453         for (i = 0; ; i++) {
 454                 passphrase = radius_msg_get_tunnel_password(
 455                         msg, &passphraselen, shared_secret, shared_secret_len,
 456                         req, i);
 457                 /*
 458                  * Passphrase is NULL iff there is no i-th Tunnel-Password
 459                  * attribute in msg.
 460                  */
 461                 if (passphrase == NULL)
 462                         break;
 463                 /*
 464                  * passphrase does not contain the NULL termination.
 465                  * Add it here as pbkdf2_sha1() requires it.
 466                  */
 467                 strpassphrase = os_zalloc(passphraselen + 1);
 468                 psk = os_zalloc(sizeof(struct hostapd_sta_wpa_psk_short));
 469                 if (strpassphrase && psk) {
 470                         os_memcpy(strpassphrase, passphrase, passphraselen);
 471                         pbkdf2_sha1(strpassphrase,
 472                                     hapd->conf->ssid.ssid,
 473                                     hapd->conf->ssid.ssid_len, 4096,
 474                                     psk->psk, PMK_LEN);
 475                         psk->next = cache->psk;
 476                         cache->psk = psk;
 477                         psk = NULL;
 478                 }
 479                 os_free(strpassphrase);
 480                 os_free(psk);
 481                 os_free(passphrase);
 482         }
 483 }
 484
 485
 486 /**
 487  * hostapd_acl_recv_radius - Process incoming RADIUS Authentication messages
 488  * @msg: RADIUS response message
 489  * @req: RADIUS request message
 490  * @shared_secret: RADIUS shared secret
 491  * @shared_secret_len: Length of shared_secret in octets
 492  * @data: Context data (struct hostapd_data *)
 493  * Returns: RADIUS_RX_PROCESSED if RADIUS message was a reply to ACL query (and
 494  * was processed here) or RADIUS_RX_UNKNOWN if not.
 495  */
 496 static RadiusRxResult
 497 hostapd_acl_recv_radius(struct radius_msg *msg, struct radius_msg *req,
 498                         const u8 *shared_secret, size_t shared_secret_len,
 499                         void *data)
 500 {
 501         struct hostapd_data *hapd = data;
 502         struct hostapd_acl_query_data *query, *prev;
 503         struct hostapd_cached_radius_acl *cache;
 504         struct radius_hdr *hdr = radius_msg_get_hdr(msg);
 505
 506         query = hapd->acl_queries;
 507         prev = NULL;
 508         while (query) {
 509                 if (query->radius_id == hdr->identifier)
 510                         break;
 511                 prev = query;
 512                 query = query->next;
 513         }
 514         if (query == NULL)
 515                 return RADIUS_RX_UNKNOWN;
 516
 517         wpa_printf(MSG_DEBUG, "Found matching Access-Request for RADIUS "
 518                    "message (id=%d)", query->radius_id);
 519
 520         if (radius_msg_verify(msg, shared_secret, shared_secret_len, req, 0)) {
 521                 wpa_printf(MSG_INFO, "Incoming RADIUS packet did not have "
 522                            "correct authenticator - dropped\n");
 523                 return RADIUS_RX_INVALID_AUTHENTICATOR;
 524         }
 525
 526         if (hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
 527             hdr->code != RADIUS_CODE_ACCESS_REJECT) {
 528                 wpa_printf(MSG_DEBUG, "Unknown RADIUS message code %d to ACL "
 529                            "query", hdr->code);
 530                 return RADIUS_RX_UNKNOWN;
 531         }
 532
 533         /* Insert Accept/Reject info into ACL cache */
 534         cache = os_zalloc(sizeof(*cache));
 535         if (cache == NULL) {
 536                 wpa_printf(MSG_DEBUG, "Failed to add ACL cache entry");
 537                 goto done;
 538         }
 539         os_get_reltime(&cache->timestamp);
 540         os_memcpy(cache->addr, query->addr, sizeof(cache->addr));
 541         if (hdr->code == RADIUS_CODE_ACCESS_ACCEPT) {
 542                 u8 *buf;
 543                 size_t len;
 544
 545                 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_SESSION_TIMEOUT,
 546                                               &cache->session_timeout) == 0)
 547                         cache->accepted = HOSTAPD_ACL_ACCEPT_TIMEOUT;
 548                 else
 549                         cache->accepted = HOSTAPD_ACL_ACCEPT;
 550
 551                 if (radius_msg_get_attr_int32(
 552                             msg, RADIUS_ATTR_ACCT_INTERIM_INTERVAL,
 553                             &cache->acct_interim_interval) == 0 &&
 554                     cache->acct_interim_interval < 60) {
 555                         wpa_printf(MSG_DEBUG, "Ignored too small "
 556                                    "Acct-Interim-Interval %d for STA " MACSTR,
 557                                    cache->acct_interim_interval,
 558                                    MAC2STR(query->addr));
 559                         cache->acct_interim_interval = 0;
 560                 }
 561
 562                 cache->vlan_id.untagged = radius_msg_get_vlanid(msg);
 563                 cache->vlan_id.notempty = !!cache->vlan_id.untagged;
 564
 565                 decode_tunnel_passwords(hapd, shared_secret, shared_secret_len,
 566                                         msg, req, cache);
 567
 568                 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME,
 569                                             &buf, &len, NULL) == 0) {
 570                         cache->identity = os_zalloc(len + 1);
 571                         if (cache->identity)
 572                                 os_memcpy(cache->identity, buf, len);
 573                 }
 574                 if (radius_msg_get_attr_ptr(
 575                             msg, RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
 576                             &buf, &len, NULL) == 0) {
 577                         cache->radius_cui = os_zalloc(len + 1);
 578                         if (cache->radius_cui)
 579                                 os_memcpy(cache->radius_cui, buf, len);
 580                 }
 581
 582                 if (hapd->conf->wpa_psk_radius == PSK_RADIUS_REQUIRED &&
 583                     !cache->psk)
 584                         cache->accepted = HOSTAPD_ACL_REJECT;
 585
 586                 if (cache->vlan_id.notempty &&
 587                     !hostapd_vlan_valid(hapd->conf->vlan, &cache->vlan_id)) {
 588                         hostapd_logger(hapd, query->addr,
 589                                        HOSTAPD_MODULE_RADIUS,
 590                                        HOSTAPD_LEVEL_INFO,
 591                                        "Invalid VLAN %d received from RADIUS server",
 592                                        cache->vlan_id.untagged);
 593                         os_memset(&cache->vlan_id, 0, sizeof(cache->vlan_id));
 594                 }
 595                 if (hapd->conf->ssid.dynamic_vlan == DYNAMIC_VLAN_REQUIRED &&
 596                     !cache->vlan_id.notempty)
 597                         cache->accepted = HOSTAPD_ACL_REJECT;
 598         } else
 599                 cache->accepted = HOSTAPD_ACL_REJECT;
 600         cache->next = hapd->acl_cache;
 601         hapd->acl_cache = cache;
 602
 603 #ifdef CONFIG_DRIVER_RADIUS_ACL
 604         hostapd_drv_set_radius_acl_auth(hapd, query->addr, cache->accepted,
 605                                         cache->session_timeout);
 606 #else /* CONFIG_DRIVER_RADIUS_ACL */
 607 #ifdef NEED_AP_MLME
 608         /* Re-send original authentication frame for 802.11 processing */
 609         wpa_printf(MSG_DEBUG, "Re-sending authentication frame after "
 610                    "successful RADIUS ACL query");
 611         ieee802_11_mgmt(hapd, query->auth_msg, query->auth_msg_len, NULL);
 612 #endif /* NEED_AP_MLME */
 613 #endif /* CONFIG_DRIVER_RADIUS_ACL */
 614
 615  done:
 616         if (prev == NULL)
 617                 hapd->acl_queries = query->next;
 618         else
 619                 prev->next = query->next;
 620
 621         hostapd_acl_query_free(query);
 622
 623         return RADIUS_RX_PROCESSED;
 624 }
 625 #endif /* CONFIG_NO_RADIUS */
 626
 627
 628 /**
 629  * hostapd_acl_init: Initialize IEEE 802.11 ACL
 630  * @hapd: hostapd BSS data
 631  * Returns: 0 on success, -1 on failure
 632  */
 633 int hostapd_acl_init(struct hostapd_data *hapd)
 634 {
 635 #ifndef CONFIG_NO_RADIUS
 636         if (radius_client_register(hapd->radius, RADIUS_AUTH,
 637                                    hostapd_acl_recv_radius, hapd))
 638                 return -1;
 639 #endif /* CONFIG_NO_RADIUS */
 640
 641         return 0;
 642 }
 643
 644
 645 /**
 646  * hostapd_acl_deinit - Deinitialize IEEE 802.11 ACL
 647  * @hapd: hostapd BSS data
 648  */
 649 void hostapd_acl_deinit(struct hostapd_data *hapd)
 650 {
 651         struct hostapd_acl_query_data *query, *prev;
 652
 653 #ifndef CONFIG_NO_RADIUS
 654         hostapd_acl_cache_free(hapd->acl_cache);
 655 #endif /* CONFIG_NO_RADIUS */
 656
 657         query = hapd->acl_queries;
 658         while (query) {
 659                 prev = query;
 660                 query = query->next;
 661                 hostapd_acl_query_free(prev);
 662         }
 663 }
 664
 665
 666 void hostapd_free_psk_list(struct hostapd_sta_wpa_psk_short *psk)
 667 {
 668         while (psk) {
 669                 struct hostapd_sta_wpa_psk_short *prev = psk;
 670                 psk = psk->next;
 671                 os_free(prev);
 672         }
 673 }