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 "radius/radius.h"
  19 #include "radius/radius_client.h"
  20 #include "hostapd.h"
  21 #include "ap_config.h"
  22 #include "ap_drv_ops.h"
  23 #include "ieee802_11.h"
  24 #include "ieee802_1x.h"
  25 #include "ieee802_11_auth.h"
  26
  27 #define RADIUS_ACL_TIMEOUT 30
  28
  29
  30 struct hostapd_cached_radius_acl {
  31         struct os_reltime timestamp;
  32         macaddr addr;
  33         int accepted; /* HOSTAPD_ACL_* */
  34         struct hostapd_cached_radius_acl *next;
  35         u32 session_timeout;
  36         u32 acct_interim_interval;
  37         struct vlan_description vlan_id;
  38         struct hostapd_sta_wpa_psk_short *psk;
  39         char *identity;
  40         char *radius_cui;
  41 };
  42
  43
  44 struct hostapd_acl_query_data {
  45         struct os_reltime timestamp;
  46         u8 radius_id;
  47         macaddr addr;
  48         u8 *auth_msg; /* IEEE 802.11 authentication frame from station */
  49         size_t auth_msg_len;
  50         struct hostapd_acl_query_data *next;
  51 };
  52
  53
  54 #ifndef CONFIG_NO_RADIUS
  55 static void hostapd_acl_cache_free_entry(struct hostapd_cached_radius_acl *e)
  56 {
  57         os_free(e->identity);
  58         os_free(e->radius_cui);
  59         hostapd_free_psk_list(e->psk);
  60         os_free(e);
  61 }
  62
  63
  64 static void hostapd_acl_cache_free(struct hostapd_cached_radius_acl *acl_cache)
  65 {
  66         struct hostapd_cached_radius_acl *prev;
  67
  68         while (acl_cache) {
  69                 prev = acl_cache;
  70                 acl_cache = acl_cache->next;
  71                 hostapd_acl_cache_free_entry(prev);
  72         }
  73 }
  74
  75
  76 static void copy_psk_list(struct hostapd_sta_wpa_psk_short **psk,
  77                           struct hostapd_sta_wpa_psk_short *src)
  78 {
  79         if (!psk)
  80                 return;
  81
  82         if (src)
  83                 src->ref++;
  84
  85         *psk = src;
  86 }
  87
  88
  89 static int hostapd_acl_cache_get(struct hostapd_data *hapd, const u8 *addr,
  90                                  u32 *session_timeout,
  91                                  u32 *acct_interim_interval,
  92                                  struct vlan_description *vlan_id,
  93                                  struct hostapd_sta_wpa_psk_short **psk,
  94                                  char **identity, char **radius_cui)
  95 {
  96         struct hostapd_cached_radius_acl *entry;
  97         struct os_reltime now;
  98
  99         os_get_reltime(&now);
 100
 101         for (entry = hapd->acl_cache; entry; entry = entry->next) {
 102                 if (os_memcmp(entry->addr, addr, ETH_ALEN) != 0)
 103                         continue;
 104
 105                 if (os_reltime_expired(&now, &entry->timestamp,
 106                                        RADIUS_ACL_TIMEOUT))
 107                         return -1; /* entry has expired */
 108                 if (entry->accepted == HOSTAPD_ACL_ACCEPT_TIMEOUT)
 109                         if (session_timeout)
 110                                 *session_timeout = entry->session_timeout;
 111                 if (acct_interim_interval)
 112                         *acct_interim_interval =
 113                                 entry->acct_interim_interval;
 114                 if (vlan_id)
 115                         *vlan_id = entry->vlan_id;
 116                 copy_psk_list(psk, entry->psk);
 117                 if (identity) {
 118                         if (entry->identity)
 119                                 *identity = os_strdup(entry->identity);
 120                         else
 121                                 *identity = NULL;
 122                 }
 123                 if (radius_cui) {
 124                         if (entry->radius_cui)
 125                                 *radius_cui = os_strdup(entry->radius_cui);
 126                         else
 127                                 *radius_cui = NULL;
 128                 }
 129                 return entry->accepted;
 130         }
 131
 132         return -1;
 133 }
 134 #endif /* CONFIG_NO_RADIUS */
 135
 136
 137 static void hostapd_acl_query_free(struct hostapd_acl_query_data *query)
 138 {
 139         if (query == NULL)
 140                 return;
 141         os_free(query->auth_msg);
 142         os_free(query);
 143 }
 144
 145
 146 #ifndef CONFIG_NO_RADIUS
 147 static int hostapd_radius_acl_query(struct hostapd_data *hapd, const u8 *addr,
 148                                     struct hostapd_acl_query_data *query)
 149 {
 150         struct radius_msg *msg;
 151         char buf[128];
 152
 153         query->radius_id = radius_client_get_id(hapd->radius);
 154         msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST, query->radius_id);
 155         if (msg == NULL)
 156                 return -1;
 157
 158         if (radius_msg_make_authenticator(msg) < 0) {
 159                 wpa_printf(MSG_INFO, "Could not make Request Authenticator");
 160                 goto fail;
 161         }
 162
 163         os_snprintf(buf, sizeof(buf), RADIUS_ADDR_FORMAT, MAC2STR(addr));
 164         if (!radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME, (u8 *) buf,
 165                                  os_strlen(buf))) {
 166                 wpa_printf(MSG_DEBUG, "Could not add User-Name");
 167                 goto fail;
 168         }
 169
 170         if (!radius_msg_add_attr_user_password(
 171                     msg, (u8 *) buf, os_strlen(buf),
 172                     hapd->conf->radius->auth_server->shared_secret,
 173                     hapd->conf->radius->auth_server->shared_secret_len)) {
 174                 wpa_printf(MSG_DEBUG, "Could not add User-Password");
 175                 goto fail;
 176         }
 177
 178         if (add_common_radius_attr(hapd, hapd->conf->radius_auth_req_attr,
 179                                    NULL, msg) < 0)
 180                 goto fail;
 181
 182         os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
 183                     MAC2STR(addr));
 184         if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
 185                                  (u8 *) buf, os_strlen(buf))) {
 186                 wpa_printf(MSG_DEBUG, "Could not add Calling-Station-Id");
 187                 goto fail;
 188         }
 189
 190         os_snprintf(buf, sizeof(buf), "CONNECT 11Mbps 802.11b");
 191         if (!radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
 192                                  (u8 *) buf, os_strlen(buf))) {
 193                 wpa_printf(MSG_DEBUG, "Could not add Connect-Info");
 194                 goto fail;
 195         }
 196
 197         if (radius_client_send(hapd->radius, msg, RADIUS_AUTH, addr) < 0)
 198                 goto fail;
 199         return 0;
 200
 201  fail:
 202         radius_msg_free(msg);
 203         return -1;
 204 }
 205 #endif /* CONFIG_NO_RADIUS */
 206
 207
 208 /**
 209  * hostapd_check_acl - Check a specified STA against accept/deny ACLs
 210  * @hapd: hostapd BSS data
 211  * @addr: MAC address of the STA
 212  * @vlan_id: Buffer for returning VLAN ID
 213  * Returns: HOSTAPD_ACL_ACCEPT, HOSTAPD_ACL_REJECT, or HOSTAPD_ACL_PENDING
 214  */
 215 int hostapd_check_acl(struct hostapd_data *hapd, const u8 *addr,
 216                       struct vlan_description *vlan_id)
 217 {
 218         if (hostapd_maclist_found(hapd->conf->accept_mac,
 219                                   hapd->conf->num_accept_mac, addr, vlan_id))
 220                 return HOSTAPD_ACL_ACCEPT;
 221
 222         if (hostapd_maclist_found(hapd->conf->deny_mac,
 223                                   hapd->conf->num_deny_mac, addr, vlan_id))
 224                 return HOSTAPD_ACL_REJECT;
 225
 226         if (hapd->conf->macaddr_acl == ACCEPT_UNLESS_DENIED)
 227                 return HOSTAPD_ACL_ACCEPT;
 228         if (hapd->conf->macaddr_acl == DENY_UNLESS_ACCEPTED)
 229                 return HOSTAPD_ACL_REJECT;
 230
 231         return HOSTAPD_ACL_PENDING;
 232 }
 233
 234
 235 /**
 236  * hostapd_allowed_address - Check whether a specified STA can be authenticated
 237  * @hapd: hostapd BSS data
 238  * @addr: MAC address of the STA
 239  * @msg: Authentication message
 240  * @len: Length of msg in octets
 241  * @session_timeout: Buffer for returning session timeout (from RADIUS)
 242  * @acct_interim_interval: Buffer for returning account interval (from RADIUS)
 243  * @vlan_id: Buffer for returning VLAN ID
 244  * @psk: Linked list buffer for returning WPA PSK
 245  * @identity: Buffer for returning identity (from RADIUS)
 246  * @radius_cui: Buffer for returning CUI (from RADIUS)
 247  * Returns: HOSTAPD_ACL_ACCEPT, HOSTAPD_ACL_REJECT, or HOSTAPD_ACL_PENDING
 248  *
 249  * The caller is responsible for freeing the returned *identity and *radius_cui
 250  * values with os_free().
 251  */
 252 int hostapd_allowed_address(struct hostapd_data *hapd, const u8 *addr,
 253                             const u8 *msg, size_t len, u32 *session_timeout,
 254                             u32 *acct_interim_interval,
 255                             struct vlan_description *vlan_id,
 256                             struct hostapd_sta_wpa_psk_short **psk,
 257                             char **identity, char **radius_cui)
 258 {
 259         int res;
 260
 261         if (session_timeout)
 262                 *session_timeout = 0;
 263         if (acct_interim_interval)
 264                 *acct_interim_interval = 0;
 265         if (vlan_id)
 266                 os_memset(vlan_id, 0, sizeof(*vlan_id));
 267         if (psk)
 268                 *psk = NULL;
 269         if (identity)
 270                 *identity = NULL;
 271         if (radius_cui)
 272                 *radius_cui = NULL;
 273
 274         res = hostapd_check_acl(hapd, addr, vlan_id);
 275         if (res != HOSTAPD_ACL_PENDING)
 276                 return res;
 277
 278         if (hapd->conf->macaddr_acl == USE_EXTERNAL_RADIUS_AUTH) {
 279 #ifdef CONFIG_NO_RADIUS
 280                 return HOSTAPD_ACL_REJECT;
 281 #else /* CONFIG_NO_RADIUS */
 282                 struct hostapd_acl_query_data *query;
 283
 284                 /* Check whether ACL cache has an entry for this station */
 285                 res = hostapd_acl_cache_get(hapd, addr, session_timeout,
 286                                             acct_interim_interval, vlan_id, psk,
 287                                             identity, radius_cui);
 288                 if (res == HOSTAPD_ACL_ACCEPT ||
 289                     res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
 290                         return res;
 291                 if (res == HOSTAPD_ACL_REJECT)
 292                         return HOSTAPD_ACL_REJECT;
 293
 294                 query = hapd->acl_queries;
 295                 while (query) {
 296                         if (os_memcmp(query->addr, addr, ETH_ALEN) == 0) {
 297                                 /* pending query in RADIUS retransmit queue;
 298                                  * do not generate a new one */
 299                                 if (identity) {
 300                                         os_free(*identity);
 301                                         *identity = NULL;
 302                                 }
 303                                 if (radius_cui) {
 304                                         os_free(*radius_cui);
 305                                         *radius_cui = NULL;
 306                                 }
 307                                 return HOSTAPD_ACL_PENDING;
 308                         }
 309                         query = query->next;
 310                 }
 311
 312                 if (!hapd->conf->radius->auth_server)
 313                         return HOSTAPD_ACL_REJECT;
 314
 315                 /* No entry in the cache - query external RADIUS server */
 316                 query = os_zalloc(sizeof(*query));
 317                 if (query == NULL) {
 318                         wpa_printf(MSG_ERROR, "malloc for query data failed");
 319                         return HOSTAPD_ACL_REJECT;
 320                 }
 321                 os_get_reltime(&query->timestamp);
 322                 os_memcpy(query->addr, addr, ETH_ALEN);
 323                 if (hostapd_radius_acl_query(hapd, addr, query)) {
 324                         wpa_printf(MSG_DEBUG, "Failed to send Access-Request "
 325                                    "for ACL query.");
 326                         hostapd_acl_query_free(query);
 327                         return HOSTAPD_ACL_REJECT;
 328                 }
 329
 330                 query->auth_msg = os_malloc(len);
 331                 if (query->auth_msg == NULL) {
 332                         wpa_printf(MSG_ERROR, "Failed to allocate memory for "
 333                                    "auth frame.");
 334                         hostapd_acl_query_free(query);
 335                         return HOSTAPD_ACL_REJECT;
 336                 }
 337                 os_memcpy(query->auth_msg, msg, len);
 338                 query->auth_msg_len = len;
 339                 query->next = hapd->acl_queries;
 340                 hapd->acl_queries = query;
 341
 342                 /* Queued data will be processed in hostapd_acl_recv_radius()
 343                  * when RADIUS server replies to the sent Access-Request. */
 344                 return HOSTAPD_ACL_PENDING;
 345 #endif /* CONFIG_NO_RADIUS */
 346         }
 347
 348         return HOSTAPD_ACL_REJECT;
 349 }
 350
 351
 352 #ifndef CONFIG_NO_RADIUS
 353 static void hostapd_acl_expire_cache(struct hostapd_data *hapd,
 354                                      struct os_reltime *now)
 355 {
 356         struct hostapd_cached_radius_acl *prev, *entry, *tmp;
 357
 358         prev = NULL;
 359         entry = hapd->acl_cache;
 360
 361         while (entry) {
 362                 if (os_reltime_expired(now, &entry->timestamp,
 363                                        RADIUS_ACL_TIMEOUT)) {
 364                         wpa_printf(MSG_DEBUG, "Cached ACL entry for " MACSTR
 365                                    " has expired.", MAC2STR(entry->addr));
 366                         if (prev)
 367                                 prev->next = entry->next;
 368                         else
 369                                 hapd->acl_cache = entry->next;
 370                         hostapd_drv_set_radius_acl_expire(hapd, entry->addr);
 371                         tmp = entry;
 372                         entry = entry->next;
 373                         hostapd_acl_cache_free_entry(tmp);
 374                         continue;
 375                 }
 376
 377                 prev = entry;
 378                 entry = entry->next;
 379         }
 380 }
 381
 382
 383 static void hostapd_acl_expire_queries(struct hostapd_data *hapd,
 384                                        struct os_reltime *now)
 385 {
 386         struct hostapd_acl_query_data *prev, *entry, *tmp;
 387
 388         prev = NULL;
 389         entry = hapd->acl_queries;
 390
 391         while (entry) {
 392                 if (os_reltime_expired(now, &entry->timestamp,
 393                                        RADIUS_ACL_TIMEOUT)) {
 394                         wpa_printf(MSG_DEBUG, "ACL query for " MACSTR
 395                                    " has expired.", MAC2STR(entry->addr));
 396                         if (prev)
 397                                 prev->next = entry->next;
 398                         else
 399                                 hapd->acl_queries = entry->next;
 400
 401                         tmp = entry;
 402                         entry = entry->next;
 403                         hostapd_acl_query_free(tmp);
 404                         continue;
 405                 }
 406
 407                 prev = entry;
 408                 entry = entry->next;
 409         }
 410 }
 411
 412
 413 /**
 414  * hostapd_acl_expire - ACL cache expiration callback
 415  * @hapd: struct hostapd_data *
 416  */
 417 void hostapd_acl_expire(struct hostapd_data *hapd)
 418 {
 419         struct os_reltime now;
 420
 421         os_get_reltime(&now);
 422         hostapd_acl_expire_cache(hapd, &now);
 423         hostapd_acl_expire_queries(hapd, &now);
 424 }
 425
 426
 427 static void decode_tunnel_passwords(struct hostapd_data *hapd,
 428                                     const u8 *shared_secret,
 429                                     size_t shared_secret_len,
 430                                     struct radius_msg *msg,
 431                                     struct radius_msg *req,
 432                                     struct hostapd_cached_radius_acl *cache)
 433 {
 434         int passphraselen;
 435         char *passphrase;
 436         size_t i;
 437         struct hostapd_sta_wpa_psk_short *psk;
 438
 439         /*
 440          * Decode all tunnel passwords as PSK and save them into a linked list.
 441          */
 442         for (i = 0; ; i++) {
 443                 passphrase = radius_msg_get_tunnel_password(
 444                         msg, &passphraselen, shared_secret, shared_secret_len,
 445                         req, i);
 446                 /*
 447                  * Passphrase is NULL iff there is no i-th Tunnel-Password
 448                  * attribute in msg.
 449                  */
 450                 if (passphrase == NULL)
 451                         break;
 452
 453                 /*
 454                  * Passphase should be 8..63 chars (to be hashed with SSID)
 455                  * or 64 chars hex string (no separate hashing with SSID).
 456                  */
 457
 458                 if (passphraselen < MIN_PASSPHRASE_LEN ||
 459                     passphraselen > MAX_PASSPHRASE_LEN + 1)
 460                         goto free_pass;
 461
 462                 /*
 463                  * passphrase does not contain the NULL termination.
 464                  * Add it here as pbkdf2_sha1() requires it.
 465                  */
 466                 psk = os_zalloc(sizeof(struct hostapd_sta_wpa_psk_short));
 467                 if (psk) {
 468                         if ((passphraselen == MAX_PASSPHRASE_LEN + 1) &&
 469                             (hexstr2bin(passphrase, psk->psk, PMK_LEN) < 0)) {
 470                                 hostapd_logger(hapd, cache->addr,
 471                                                HOSTAPD_MODULE_RADIUS,
 472                                                HOSTAPD_LEVEL_WARNING,
 473                                                "invalid hex string (%d chars) in Tunnel-Password",
 474                                                passphraselen);
 475                                 goto skip;
 476                         } else if (passphraselen <= MAX_PASSPHRASE_LEN) {
 477                                 os_memcpy(psk->passphrase, passphrase,
 478                                           passphraselen);
 479                                 psk->is_passphrase = 1;
 480                         }
 481                         psk->next = cache->psk;
 482                         cache->psk = psk;
 483                         psk = NULL;
 484                 }
 485 skip:
 486                 os_free(psk);
 487 free_pass:
 488                 os_free(passphrase);
 489         }
 490 }
 491
 492
 493 /**
 494  * hostapd_acl_recv_radius - Process incoming RADIUS Authentication messages
 495  * @msg: RADIUS response message
 496  * @req: RADIUS request message
 497  * @shared_secret: RADIUS shared secret
 498  * @shared_secret_len: Length of shared_secret in octets
 499  * @data: Context data (struct hostapd_data *)
 500  * Returns: RADIUS_RX_PROCESSED if RADIUS message was a reply to ACL query (and
 501  * was processed here) or RADIUS_RX_UNKNOWN if not.
 502  */
 503 static RadiusRxResult
 504 hostapd_acl_recv_radius(struct radius_msg *msg, struct radius_msg *req,
 505                         const u8 *shared_secret, size_t shared_secret_len,
 506                         void *data)
 507 {
 508         struct hostapd_data *hapd = data;
 509         struct hostapd_acl_query_data *query, *prev;
 510         struct hostapd_cached_radius_acl *cache;
 511         struct radius_hdr *hdr = radius_msg_get_hdr(msg);
 512         int *untagged, *tagged, *notempty;
 513
 514         query = hapd->acl_queries;
 515         prev = NULL;
 516         while (query) {
 517                 if (query->radius_id == hdr->identifier)
 518                         break;
 519                 prev = query;
 520                 query = query->next;
 521         }
 522         if (query == NULL)
 523                 return RADIUS_RX_UNKNOWN;
 524
 525         wpa_printf(MSG_DEBUG, "Found matching Access-Request for RADIUS "
 526                    "message (id=%d)", query->radius_id);
 527
 528         if (radius_msg_verify(msg, shared_secret, shared_secret_len, req, 0)) {
 529                 wpa_printf(MSG_INFO, "Incoming RADIUS packet did not have "
 530                            "correct authenticator - dropped\n");
 531                 return RADIUS_RX_INVALID_AUTHENTICATOR;
 532         }
 533
 534         if (hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
 535             hdr->code != RADIUS_CODE_ACCESS_REJECT) {
 536                 wpa_printf(MSG_DEBUG, "Unknown RADIUS message code %d to ACL "
 537                            "query", hdr->code);
 538                 return RADIUS_RX_UNKNOWN;
 539         }
 540
 541         /* Insert Accept/Reject info into ACL cache */
 542         cache = os_zalloc(sizeof(*cache));
 543         if (cache == NULL) {
 544                 wpa_printf(MSG_DEBUG, "Failed to add ACL cache entry");
 545                 goto done;
 546         }
 547         os_get_reltime(&cache->timestamp);
 548         os_memcpy(cache->addr, query->addr, sizeof(cache->addr));
 549         if (hdr->code == RADIUS_CODE_ACCESS_ACCEPT) {
 550                 u8 *buf;
 551                 size_t len;
 552
 553                 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_SESSION_TIMEOUT,
 554                                               &cache->session_timeout) == 0)
 555                         cache->accepted = HOSTAPD_ACL_ACCEPT_TIMEOUT;
 556                 else
 557                         cache->accepted = HOSTAPD_ACL_ACCEPT;
 558
 559                 if (radius_msg_get_attr_int32(
 560                             msg, RADIUS_ATTR_ACCT_INTERIM_INTERVAL,
 561                             &cache->acct_interim_interval) == 0 &&
 562                     cache->acct_interim_interval < 60) {
 563                         wpa_printf(MSG_DEBUG, "Ignored too small "
 564                                    "Acct-Interim-Interval %d for STA " MACSTR,
 565                                    cache->acct_interim_interval,
 566                                    MAC2STR(query->addr));
 567                         cache->acct_interim_interval = 0;
 568                 }
 569
 570                 notempty = &cache->vlan_id.notempty;
 571                 untagged = &cache->vlan_id.untagged;
 572                 tagged = cache->vlan_id.tagged;
 573                 *notempty = !!radius_msg_get_vlanid(msg, untagged,
 574                                                     MAX_NUM_TAGGED_VLAN,
 575                                                     tagged);
 576
 577                 decode_tunnel_passwords(hapd, shared_secret, shared_secret_len,
 578                                         msg, req, cache);
 579
 580                 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME,
 581                                             &buf, &len, NULL) == 0) {
 582                         cache->identity = os_zalloc(len + 1);
 583                         if (cache->identity)
 584                                 os_memcpy(cache->identity, buf, len);
 585                 }
 586                 if (radius_msg_get_attr_ptr(
 587                             msg, RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
 588                             &buf, &len, NULL) == 0) {
 589                         cache->radius_cui = os_zalloc(len + 1);
 590                         if (cache->radius_cui)
 591                                 os_memcpy(cache->radius_cui, buf, len);
 592                 }
 593
 594                 if (hapd->conf->wpa_psk_radius == PSK_RADIUS_REQUIRED &&
 595                     !cache->psk)
 596                         cache->accepted = HOSTAPD_ACL_REJECT;
 597
 598                 if (cache->vlan_id.notempty &&
 599                     !hostapd_vlan_valid(hapd->conf->vlan, &cache->vlan_id)) {
 600                         hostapd_logger(hapd, query->addr,
 601                                        HOSTAPD_MODULE_RADIUS,
 602                                        HOSTAPD_LEVEL_INFO,
 603                                        "Invalid VLAN %d%s received from RADIUS server",
 604                                        cache->vlan_id.untagged,
 605                                        cache->vlan_id.tagged[0] ? "+" : "");
 606                         os_memset(&cache->vlan_id, 0, sizeof(cache->vlan_id));
 607                 }
 608                 if (hapd->conf->ssid.dynamic_vlan == DYNAMIC_VLAN_REQUIRED &&
 609                     !cache->vlan_id.notempty)
 610                         cache->accepted = HOSTAPD_ACL_REJECT;
 611         } else
 612                 cache->accepted = HOSTAPD_ACL_REJECT;
 613         cache->next = hapd->acl_cache;
 614         hapd->acl_cache = cache;
 615
 616 #ifdef CONFIG_DRIVER_RADIUS_ACL
 617         hostapd_drv_set_radius_acl_auth(hapd, query->addr, cache->accepted,
 618                                         cache->session_timeout);
 619 #else /* CONFIG_DRIVER_RADIUS_ACL */
 620 #ifdef NEED_AP_MLME
 621         /* Re-send original authentication frame for 802.11 processing */
 622         wpa_printf(MSG_DEBUG, "Re-sending authentication frame after "
 623                    "successful RADIUS ACL query");
 624         ieee802_11_mgmt(hapd, query->auth_msg, query->auth_msg_len, NULL);
 625 #endif /* NEED_AP_MLME */
 626 #endif /* CONFIG_DRIVER_RADIUS_ACL */
 627
 628  done:
 629         if (prev == NULL)
 630                 hapd->acl_queries = query->next;
 631         else
 632                 prev->next = query->next;
 633
 634         hostapd_acl_query_free(query);
 635
 636         return RADIUS_RX_PROCESSED;
 637 }
 638 #endif /* CONFIG_NO_RADIUS */
 639
 640
 641 /**
 642  * hostapd_acl_init: Initialize IEEE 802.11 ACL
 643  * @hapd: hostapd BSS data
 644  * Returns: 0 on success, -1 on failure
 645  */
 646 int hostapd_acl_init(struct hostapd_data *hapd)
 647 {
 648 #ifndef CONFIG_NO_RADIUS
 649         if (radius_client_register(hapd->radius, RADIUS_AUTH,
 650                                    hostapd_acl_recv_radius, hapd))
 651                 return -1;
 652 #endif /* CONFIG_NO_RADIUS */
 653
 654         return 0;
 655 }
 656
 657
 658 /**
 659  * hostapd_acl_deinit - Deinitialize IEEE 802.11 ACL
 660  * @hapd: hostapd BSS data
 661  */
 662 void hostapd_acl_deinit(struct hostapd_data *hapd)
 663 {
 664         struct hostapd_acl_query_data *query, *prev;
 665
 666 #ifndef CONFIG_NO_RADIUS
 667         hostapd_acl_cache_free(hapd->acl_cache);
 668         hapd->acl_cache = NULL;
 669 #endif /* CONFIG_NO_RADIUS */
 670
 671         query = hapd->acl_queries;
 672         hapd->acl_queries = NULL;
 673         while (query) {
 674                 prev = query;
 675                 query = query->next;
 676                 hostapd_acl_query_free(prev);
 677         }
 678 }
 679
 680
 681 void hostapd_free_psk_list(struct hostapd_sta_wpa_psk_short *psk)
 682 {
 683         if (psk && psk->ref) {
 684                 /* This will be freed when the last reference is dropped. */
 685                 psk->ref--;
 686                 return;
 687         }
 688
 689         while (psk) {
 690                 struct hostapd_sta_wpa_psk_short *prev = psk;
 691                 psk = psk->next;
 692                 os_free(prev);
 693         }
 694 }