src/ap/ap_config.c

   1 /*
   2  * hostapd / Configuration helper functions
   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
   9 #include "utils/includes.h"
  10
  11 #include "utils/common.h"
  12 #include "crypto/sha1.h"
  13 #include "radius/radius_client.h"
  14 #include "common/ieee802_11_defs.h"
  15 #include "common/eapol_common.h"
  16 #include "eap_common/eap_wsc_common.h"
  17 #include "eap_server/eap.h"
  18 #include "wpa_auth.h"
  19 #include "sta_info.h"
  20 #include "ap_config.h"
  21
  22
  23 static void hostapd_config_free_vlan(struct hostapd_bss_config *bss)
  24 {
  25         struct hostapd_vlan *vlan, *prev;
  26
  27         vlan = bss->vlan;
  28         prev = NULL;
  29         while (vlan) {
  30                 prev = vlan;
  31                 vlan = vlan->next;
  32                 os_free(prev);
  33         }
  34
  35         bss->vlan = NULL;
  36 }
  37
  38
  39 void hostapd_config_defaults_bss(struct hostapd_bss_config *bss)
  40 {
  41         bss->logger_syslog_level = HOSTAPD_LEVEL_INFO;
  42         bss->logger_stdout_level = HOSTAPD_LEVEL_INFO;
  43         bss->logger_syslog = (unsigned int) -1;
  44         bss->logger_stdout = (unsigned int) -1;
  45
  46         bss->auth_algs = WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED;
  47
  48         bss->wep_rekeying_period = 300;
  49         /* use key0 in individual key and key1 in broadcast key */
  50         bss->broadcast_key_idx_min = 1;
  51         bss->broadcast_key_idx_max = 2;
  52         bss->eap_reauth_period = 3600;
  53
  54         bss->wpa_group_rekey = 600;
  55         bss->wpa_gmk_rekey = 86400;
  56         bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK;
  57         bss->wpa_pairwise = WPA_CIPHER_TKIP;
  58         bss->wpa_group = WPA_CIPHER_TKIP;
  59         bss->rsn_pairwise = 0;
  60
  61         bss->max_num_sta = MAX_STA_COUNT;
  62
  63         bss->dtim_period = 2;
  64
  65         bss->radius_server_auth_port = 1812;
  66         bss->ap_max_inactivity = AP_MAX_INACTIVITY;
  67         bss->eapol_version = EAPOL_VERSION;
  68
  69         bss->max_listen_interval = 65535;
  70
  71         bss->pwd_group = 19; /* ECC: GF(p=256) */
  72
  73 #ifdef CONFIG_IEEE80211W
  74         bss->assoc_sa_query_max_timeout = 1000;
  75         bss->assoc_sa_query_retry_timeout = 201;
  76 #endif /* CONFIG_IEEE80211W */
  77 #ifdef EAP_SERVER_FAST
  78          /* both anonymous and authenticated provisioning */
  79         bss->eap_fast_prov = 3;
  80         bss->pac_key_lifetime = 7 * 24 * 60 * 60;
  81         bss->pac_key_refresh_time = 1 * 24 * 60 * 60;
  82 #endif /* EAP_SERVER_FAST */
  83
  84         /* Set to -1 as defaults depends on HT in setup */
  85         bss->wmm_enabled = -1;
  86
  87 #ifdef CONFIG_IEEE80211R
  88         bss->ft_over_ds = 1;
  89 #endif /* CONFIG_IEEE80211R */
  90
  91         bss->radius_das_time_window = 300;
  92 }
  93
  94
  95 struct hostapd_config * hostapd_config_defaults(void)
  96 {
  97 #define ecw2cw(ecw) ((1 << (ecw)) - 1)
  98
  99         struct hostapd_config *conf;
 100         struct hostapd_bss_config *bss;
 101         const int aCWmin = 4, aCWmax = 10;
 102         const struct hostapd_wmm_ac_params ac_bk =
 103                 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
 104         const struct hostapd_wmm_ac_params ac_be =
 105                 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
 106         const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
 107                 { aCWmin - 1, aCWmin, 2, 3000 / 32, 1 };
 108         const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
 109                 { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 1 };
 110         const struct hostapd_tx_queue_params txq_bk =
 111                 { 7, ecw2cw(aCWmin), ecw2cw(aCWmax), 0 };
 112         const struct hostapd_tx_queue_params txq_be =
 113                 { 3, ecw2cw(aCWmin), 4 * (ecw2cw(aCWmin) + 1) - 1, 0};
 114         const struct hostapd_tx_queue_params txq_vi =
 115                 { 1, (ecw2cw(aCWmin) + 1) / 2 - 1, ecw2cw(aCWmin), 30};
 116         const struct hostapd_tx_queue_params txq_vo =
 117                 { 1, (ecw2cw(aCWmin) + 1) / 4 - 1,
 118                   (ecw2cw(aCWmin) + 1) / 2 - 1, 15};
 119
 120 #undef ecw2cw
 121
 122         conf = os_zalloc(sizeof(*conf));
 123         bss = os_zalloc(sizeof(*bss));
 124         if (conf == NULL || bss == NULL) {
 125                 wpa_printf(MSG_ERROR, "Failed to allocate memory for "
 126                            "configuration data.");
 127                 os_free(conf);
 128                 os_free(bss);
 129                 return NULL;
 130         }
 131
 132         bss->radius = os_zalloc(sizeof(*bss->radius));
 133         if (bss->radius == NULL) {
 134                 os_free(conf);
 135                 os_free(bss);
 136                 return NULL;
 137         }
 138
 139         hostapd_config_defaults_bss(bss);
 140
 141         conf->num_bss = 1;
 142         conf->bss = bss;
 143
 144         conf->beacon_int = 100;
 145         conf->rts_threshold = -1; /* use driver default: 2347 */
 146         conf->fragm_threshold = -1; /* user driver default: 2346 */
 147         conf->send_probe_response = 1;
 148
 149         conf->wmm_ac_params[0] = ac_be;
 150         conf->wmm_ac_params[1] = ac_bk;
 151         conf->wmm_ac_params[2] = ac_vi;
 152         conf->wmm_ac_params[3] = ac_vo;
 153
 154         conf->tx_queue[0] = txq_vo;
 155         conf->tx_queue[1] = txq_vi;
 156         conf->tx_queue[2] = txq_be;
 157         conf->tx_queue[3] = txq_bk;
 158
 159         conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED;
 160
 161         return conf;
 162 }
 163
 164
 165 int hostapd_mac_comp(const void *a, const void *b)
 166 {
 167         return os_memcmp(a, b, sizeof(macaddr));
 168 }
 169
 170
 171 int hostapd_mac_comp_empty(const void *a)
 172 {
 173         macaddr empty = { 0 };
 174         return os_memcmp(a, empty, sizeof(macaddr));
 175 }
 176
 177
 178 static int hostapd_config_read_wpa_psk(const char *fname,
 179                                        struct hostapd_ssid *ssid)
 180 {
 181         FILE *f;
 182         char buf[128], *pos;
 183         int line = 0, ret = 0, len, ok;
 184         u8 addr[ETH_ALEN];
 185         struct hostapd_wpa_psk *psk;
 186
 187         if (!fname)
 188                 return 0;
 189
 190         f = fopen(fname, "r");
 191         if (!f) {
 192                 wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname);
 193                 return -1;
 194         }
 195
 196         while (fgets(buf, sizeof(buf), f)) {
 197                 line++;
 198
 199                 if (buf[0] == '#')
 200                         continue;
 201                 pos = buf;
 202                 while (*pos != '\0') {
 203                         if (*pos == '\n') {
 204                                 *pos = '\0';
 205                                 break;
 206                         }
 207                         pos++;
 208                 }
 209                 if (buf[0] == '\0')
 210                         continue;
 211
 212                 if (hwaddr_aton(buf, addr)) {
 213                         wpa_printf(MSG_ERROR, "Invalid MAC address '%s' on "
 214                                    "line %d in '%s'", buf, line, fname);
 215                         ret = -1;
 216                         break;
 217                 }
 218
 219                 psk = os_zalloc(sizeof(*psk));
 220                 if (psk == NULL) {
 221                         wpa_printf(MSG_ERROR, "WPA PSK allocation failed");
 222                         ret = -1;
 223                         break;
 224                 }
 225                 if (is_zero_ether_addr(addr))
 226                         psk->group = 1;
 227                 else
 228                         os_memcpy(psk->addr, addr, ETH_ALEN);
 229
 230                 pos = buf + 17;
 231                 if (*pos == '\0') {
 232                         wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'",
 233                                    line, fname);
 234                         os_free(psk);
 235                         ret = -1;
 236                         break;
 237                 }
 238                 pos++;
 239
 240                 ok = 0;
 241                 len = os_strlen(pos);
 242                 if (len == 64 && hexstr2bin(pos, psk->psk, PMK_LEN) == 0)
 243                         ok = 1;
 244                 else if (len >= 8 && len < 64) {
 245                         pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len,
 246                                     4096, psk->psk, PMK_LEN);
 247                         ok = 1;
 248                 }
 249                 if (!ok) {
 250                         wpa_printf(MSG_ERROR, "Invalid PSK '%s' on line %d in "
 251                                    "'%s'", pos, line, fname);
 252                         os_free(psk);
 253                         ret = -1;
 254                         break;
 255                 }
 256
 257                 psk->next = ssid->wpa_psk;
 258                 ssid->wpa_psk = psk;
 259         }
 260
 261         fclose(f);
 262
 263         return ret;
 264 }
 265
 266
 267 static int hostapd_derive_psk(struct hostapd_ssid *ssid)
 268 {
 269         ssid->wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
 270         if (ssid->wpa_psk == NULL) {
 271                 wpa_printf(MSG_ERROR, "Unable to alloc space for PSK");
 272                 return -1;
 273         }
 274         wpa_hexdump_ascii(MSG_DEBUG, "SSID",
 275                           (u8 *) ssid->ssid, ssid->ssid_len);
 276         wpa_hexdump_ascii_key(MSG_DEBUG, "PSK (ASCII passphrase)",
 277                               (u8 *) ssid->wpa_passphrase,
 278                               os_strlen(ssid->wpa_passphrase));
 279         pbkdf2_sha1(ssid->wpa_passphrase,
 280                     ssid->ssid, ssid->ssid_len,
 281                     4096, ssid->wpa_psk->psk, PMK_LEN);
 282         wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)",
 283                         ssid->wpa_psk->psk, PMK_LEN);
 284         return 0;
 285 }
 286
 287
 288 int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf)
 289 {
 290         struct hostapd_ssid *ssid = &conf->ssid;
 291
 292         if (ssid->wpa_passphrase != NULL) {
 293                 if (ssid->wpa_psk != NULL) {
 294                         wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK "
 295                                    "instead of passphrase");
 296                 } else {
 297                         wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on "
 298                                    "passphrase");
 299                         if (hostapd_derive_psk(ssid) < 0)
 300                                 return -1;
 301                 }
 302                 ssid->wpa_psk->group = 1;
 303         }
 304
 305         if (ssid->wpa_psk_file) {
 306                 if (hostapd_config_read_wpa_psk(ssid->wpa_psk_file,
 307                                                 &conf->ssid))
 308                         return -1;
 309         }
 310
 311         return 0;
 312 }
 313
 314
 315 int hostapd_wep_key_cmp(struct hostapd_wep_keys *a, struct hostapd_wep_keys *b)
 316 {
 317         int i;
 318
 319         if (a->idx != b->idx || a->default_len != b->default_len)
 320                 return 1;
 321         for (i = 0; i < NUM_WEP_KEYS; i++)
 322                 if (a->len[i] != b->len[i] ||
 323                     os_memcmp(a->key[i], b->key[i], a->len[i]) != 0)
 324                         return 1;
 325         return 0;
 326 }
 327
 328
 329 static void hostapd_config_free_radius(struct hostapd_radius_server *servers,
 330                                        int num_servers)
 331 {
 332         int i;
 333
 334         for (i = 0; i < num_servers; i++) {
 335                 os_free(servers[i].shared_secret);
 336         }
 337         os_free(servers);
 338 }
 339
 340
 341 struct hostapd_radius_attr *
 342 hostapd_config_get_radius_attr(struct hostapd_radius_attr *attr, u8 type)
 343 {
 344         for (; attr; attr = attr->next) {
 345                 if (attr->type == type)
 346                         return attr;
 347         }
 348         return NULL;
 349 }
 350
 351
 352 static void hostapd_config_free_radius_attr(struct hostapd_radius_attr *attr)
 353 {
 354         struct hostapd_radius_attr *prev;
 355
 356         while (attr) {
 357                 prev = attr;
 358                 attr = attr->next;
 359                 wpabuf_free(prev->val);
 360                 os_free(prev);
 361         }
 362 }
 363
 364
 365 static void hostapd_config_free_eap_user(struct hostapd_eap_user *user)
 366 {
 367         os_free(user->identity);
 368         os_free(user->password);
 369         os_free(user);
 370 }
 371
 372
 373 static void hostapd_config_free_wep(struct hostapd_wep_keys *keys)
 374 {
 375         int i;
 376         for (i = 0; i < NUM_WEP_KEYS; i++) {
 377                 os_free(keys->key[i]);
 378                 keys->key[i] = NULL;
 379         }
 380 }
 381
 382
 383 static void hostapd_config_free_bss(struct hostapd_bss_config *conf)
 384 {
 385         struct hostapd_wpa_psk *psk, *prev;
 386         struct hostapd_eap_user *user, *prev_user;
 387
 388         if (conf == NULL)
 389                 return;
 390
 391         psk = conf->ssid.wpa_psk;
 392         while (psk) {
 393                 prev = psk;
 394                 psk = psk->next;
 395                 os_free(prev);
 396         }
 397
 398         os_free(conf->ssid.wpa_passphrase);
 399         os_free(conf->ssid.wpa_psk_file);
 400         hostapd_config_free_wep(&conf->ssid.wep);
 401 #ifdef CONFIG_FULL_DYNAMIC_VLAN
 402         os_free(conf->ssid.vlan_tagged_interface);
 403 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
 404
 405         user = conf->eap_user;
 406         while (user) {
 407                 prev_user = user;
 408                 user = user->next;
 409                 hostapd_config_free_eap_user(prev_user);
 410         }
 411
 412         os_free(conf->dump_log_name);
 413         os_free(conf->eap_req_id_text);
 414         os_free(conf->accept_mac);
 415         os_free(conf->deny_mac);
 416         os_free(conf->nas_identifier);
 417         hostapd_config_free_radius(conf->radius->auth_servers,
 418                                    conf->radius->num_auth_servers);
 419         hostapd_config_free_radius(conf->radius->acct_servers,
 420                                    conf->radius->num_acct_servers);
 421         hostapd_config_free_radius_attr(conf->radius_auth_req_attr);
 422         hostapd_config_free_radius_attr(conf->radius_acct_req_attr);
 423         os_free(conf->rsn_preauth_interfaces);
 424         os_free(conf->ctrl_interface);
 425         os_free(conf->ca_cert);
 426         os_free(conf->server_cert);
 427         os_free(conf->private_key);
 428         os_free(conf->private_key_passwd);
 429         os_free(conf->dh_file);
 430         os_free(conf->pac_opaque_encr_key);
 431         os_free(conf->eap_fast_a_id);
 432         os_free(conf->eap_fast_a_id_info);
 433         os_free(conf->eap_sim_db);
 434         os_free(conf->radius_server_clients);
 435         os_free(conf->test_socket);
 436         os_free(conf->radius);
 437         os_free(conf->radius_das_shared_secret);
 438         hostapd_config_free_vlan(conf);
 439         if (conf->ssid.dyn_vlan_keys) {
 440                 struct hostapd_ssid *ssid = &conf->ssid;
 441                 size_t i;
 442                 for (i = 0; i <= ssid->max_dyn_vlan_keys; i++) {
 443                         if (ssid->dyn_vlan_keys[i] == NULL)
 444                                 continue;
 445                         hostapd_config_free_wep(ssid->dyn_vlan_keys[i]);
 446                         os_free(ssid->dyn_vlan_keys[i]);
 447                 }
 448                 os_free(ssid->dyn_vlan_keys);
 449                 ssid->dyn_vlan_keys = NULL;
 450         }
 451
 452         os_free(conf->time_zone);
 453
 454 #ifdef CONFIG_IEEE80211R
 455         {
 456                 struct ft_remote_r0kh *r0kh, *r0kh_prev;
 457                 struct ft_remote_r1kh *r1kh, *r1kh_prev;
 458
 459                 r0kh = conf->r0kh_list;
 460                 conf->r0kh_list = NULL;
 461                 while (r0kh) {
 462                         r0kh_prev = r0kh;
 463                         r0kh = r0kh->next;
 464                         os_free(r0kh_prev);
 465                 }
 466
 467                 r1kh = conf->r1kh_list;
 468                 conf->r1kh_list = NULL;
 469                 while (r1kh) {
 470                         r1kh_prev = r1kh;
 471                         r1kh = r1kh->next;
 472                         os_free(r1kh_prev);
 473                 }
 474         }
 475 #endif /* CONFIG_IEEE80211R */
 476
 477 #ifdef CONFIG_WPS
 478         os_free(conf->wps_pin_requests);
 479         os_free(conf->device_name);
 480         os_free(conf->manufacturer);
 481         os_free(conf->model_name);
 482         os_free(conf->model_number);
 483         os_free(conf->serial_number);
 484         os_free(conf->config_methods);
 485         os_free(conf->ap_pin);
 486         os_free(conf->extra_cred);
 487         os_free(conf->ap_settings);
 488         os_free(conf->upnp_iface);
 489         os_free(conf->friendly_name);
 490         os_free(conf->manufacturer_url);
 491         os_free(conf->model_description);
 492         os_free(conf->model_url);
 493         os_free(conf->upc);
 494         wpabuf_free(conf->wps_nfc_dh_pubkey);
 495         wpabuf_free(conf->wps_nfc_dh_privkey);
 496         wpabuf_free(conf->wps_nfc_dev_pw);
 497 #endif /* CONFIG_WPS */
 498
 499         os_free(conf->roaming_consortium);
 500         os_free(conf->venue_name);
 501         os_free(conf->network_auth_type);
 502         os_free(conf->domain_name);
 503
 504 #ifdef CONFIG_RADIUS_TEST
 505         os_free(conf->dump_msk_file);
 506 #endif /* CONFIG_RADIUS_TEST */
 507 }
 508
 509
 510 /**
 511  * hostapd_config_free - Free hostapd configuration
 512  * @conf: Configuration data from hostapd_config_read().
 513  */
 514 void hostapd_config_free(struct hostapd_config *conf)
 515 {
 516         size_t i;
 517
 518         if (conf == NULL)
 519                 return;
 520
 521         for (i = 0; i < conf->num_bss; i++)
 522                 hostapd_config_free_bss(&conf->bss[i]);
 523         os_free(conf->bss);
 524         os_free(conf->supported_rates);
 525         os_free(conf->basic_rates);
 526
 527         os_free(conf);
 528 }
 529
 530
 531 /**
 532  * hostapd_maclist_found - Find a MAC address from a list
 533  * @list: MAC address list
 534  * @num_entries: Number of addresses in the list
 535  * @addr: Address to search for
 536  * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed
 537  * Returns: 1 if address is in the list or 0 if not.
 538  *
 539  * Perform a binary search for given MAC address from a pre-sorted list.
 540  */
 541 int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries,
 542                           const u8 *addr, int *vlan_id)
 543 {
 544         int start, end, middle, res;
 545
 546         start = 0;
 547         end = num_entries - 1;
 548
 549         while (start <= end) {
 550                 middle = (start + end) / 2;
 551                 res = os_memcmp(list[middle].addr, addr, ETH_ALEN);
 552                 if (res == 0) {
 553                         if (vlan_id)
 554                                 *vlan_id = list[middle].vlan_id;
 555                         return 1;
 556                 }
 557                 if (res < 0)
 558                         start = middle + 1;
 559                 else
 560                         end = middle - 1;
 561         }
 562
 563         return 0;
 564 }
 565
 566
 567 int hostapd_rate_found(int *list, int rate)
 568 {
 569         int i;
 570
 571         if (list == NULL)
 572                 return 0;
 573
 574         for (i = 0; list[i] >= 0; i++)
 575                 if (list[i] == rate)
 576                         return 1;
 577
 578         return 0;
 579 }
 580
 581
 582 const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id)
 583 {
 584         struct hostapd_vlan *v = vlan;
 585         while (v) {
 586                 if (v->vlan_id == vlan_id || v->vlan_id == VLAN_ID_WILDCARD)
 587                         return v->ifname;
 588                 v = v->next;
 589         }
 590         return NULL;
 591 }
 592
 593
 594 const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf,
 595                            const u8 *addr, const u8 *prev_psk)
 596 {
 597         struct hostapd_wpa_psk *psk;
 598         int next_ok = prev_psk == NULL;
 599
 600         for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) {
 601                 if (next_ok &&
 602                     (psk->group || os_memcmp(psk->addr, addr, ETH_ALEN) == 0))
 603                         return psk->psk;
 604
 605                 if (psk->psk == prev_psk)
 606                         next_ok = 1;
 607         }
 608
 609         return NULL;
 610 }
 611
 612
 613 const struct hostapd_eap_user *
 614 hostapd_get_eap_user(const struct hostapd_bss_config *conf, const u8 *identity,
 615                      size_t identity_len, int phase2)
 616 {
 617         struct hostapd_eap_user *user = conf->eap_user;
 618
 619 #ifdef CONFIG_WPS
 620         if (conf->wps_state && identity_len == WSC_ID_ENROLLEE_LEN &&
 621             os_memcmp(identity, WSC_ID_ENROLLEE, WSC_ID_ENROLLEE_LEN) == 0) {
 622                 static struct hostapd_eap_user wsc_enrollee;
 623                 os_memset(&wsc_enrollee, 0, sizeof(wsc_enrollee));
 624                 wsc_enrollee.methods[0].method = eap_server_get_type(
 625                         "WSC", &wsc_enrollee.methods[0].vendor);
 626                 return &wsc_enrollee;
 627         }
 628
 629         if (conf->wps_state && identity_len == WSC_ID_REGISTRAR_LEN &&
 630             os_memcmp(identity, WSC_ID_REGISTRAR, WSC_ID_REGISTRAR_LEN) == 0) {
 631                 static struct hostapd_eap_user wsc_registrar;
 632                 os_memset(&wsc_registrar, 0, sizeof(wsc_registrar));
 633                 wsc_registrar.methods[0].method = eap_server_get_type(
 634                         "WSC", &wsc_registrar.methods[0].vendor);
 635                 wsc_registrar.password = (u8 *) conf->ap_pin;
 636                 wsc_registrar.password_len = conf->ap_pin ?
 637                         os_strlen(conf->ap_pin) : 0;
 638                 return &wsc_registrar;
 639         }
 640 #endif /* CONFIG_WPS */
 641
 642         while (user) {
 643                 if (!phase2 && user->identity == NULL) {
 644                         /* Wildcard match */
 645                         break;
 646                 }
 647
 648                 if (user->phase2 == !!phase2 && user->wildcard_prefix &&
 649                     identity_len >= user->identity_len &&
 650                     os_memcmp(user->identity, identity, user->identity_len) ==
 651                     0) {
 652                         /* Wildcard prefix match */
 653                         break;
 654                 }
 655
 656                 if (user->phase2 == !!phase2 &&
 657                     user->identity_len == identity_len &&
 658                     os_memcmp(user->identity, identity, identity_len) == 0)
 659                         break;
 660                 user = user->next;
 661         }
 662
 663         return user;
 664 }