contrib/wpa/src/ap/ieee802_1x.c

   1 /*
   2  * hostapd / IEEE 802.1X-2004 Authenticator
   3  * Copyright (c) 2002-2019, 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 "utils/eloop.h"
  13 #include "crypto/md5.h"
  14 #include "crypto/crypto.h"
  15 #include "crypto/random.h"
  16 #include "common/ieee802_11_defs.h"
  17 #include "radius/radius.h"
  18 #include "radius/radius_client.h"
  19 #include "eap_server/eap.h"
  20 #include "eap_common/eap_wsc_common.h"
  21 #include "eapol_auth/eapol_auth_sm.h"
  22 #include "eapol_auth/eapol_auth_sm_i.h"
  23 #include "p2p/p2p.h"
  24 #include "hostapd.h"
  25 #include "accounting.h"
  26 #include "sta_info.h"
  27 #include "wpa_auth.h"
  28 #include "preauth_auth.h"
  29 #include "pmksa_cache_auth.h"
  30 #include "ap_config.h"
  31 #include "ap_drv_ops.h"
  32 #include "wps_hostapd.h"
  33 #include "hs20.h"
  34 /* FIX: Not really a good thing to require ieee802_11.h here.. (FILS) */
  35 #include "ieee802_11.h"
  36 #include "ieee802_1x.h"
  37
  38
  39 #ifdef CONFIG_HS20
  40 static void ieee802_1x_wnm_notif_send(void *eloop_ctx, void *timeout_ctx);
  41 #endif /* CONFIG_HS20 */
  42 static void ieee802_1x_finished(struct hostapd_data *hapd,
  43                                 struct sta_info *sta, int success,
  44                                 int remediation);
  45
  46
  47 static void ieee802_1x_send(struct hostapd_data *hapd, struct sta_info *sta,
  48                             u8 type, const u8 *data, size_t datalen)
  49 {
  50         u8 *buf;
  51         struct ieee802_1x_hdr *xhdr;
  52         size_t len;
  53         int encrypt = 0;
  54
  55         len = sizeof(*xhdr) + datalen;
  56         buf = os_zalloc(len);
  57         if (buf == NULL) {
  58                 wpa_printf(MSG_ERROR, "malloc() failed for "
  59                            "ieee802_1x_send(len=%lu)",
  60                            (unsigned long) len);
  61                 return;
  62         }
  63
  64         xhdr = (struct ieee802_1x_hdr *) buf;
  65         xhdr->version = hapd->conf->eapol_version;
  66         xhdr->type = type;
  67         xhdr->length = host_to_be16(datalen);
  68
  69         if (datalen > 0 && data != NULL)
  70                 os_memcpy(xhdr + 1, data, datalen);
  71
  72         if (wpa_auth_pairwise_set(sta->wpa_sm))
  73                 encrypt = 1;
  74 #ifdef CONFIG_TESTING_OPTIONS
  75         if (hapd->ext_eapol_frame_io) {
  76                 size_t hex_len = 2 * len + 1;
  77                 char *hex = os_malloc(hex_len);
  78
  79                 if (hex) {
  80                         wpa_snprintf_hex(hex, hex_len, buf, len);
  81                         wpa_msg(hapd->msg_ctx, MSG_INFO,
  82                                 "EAPOL-TX " MACSTR " %s",
  83                                 MAC2STR(sta->addr), hex);
  84                         os_free(hex);
  85                 }
  86         } else
  87 #endif /* CONFIG_TESTING_OPTIONS */
  88         if (sta->flags & WLAN_STA_PREAUTH) {
  89                 rsn_preauth_send(hapd, sta, buf, len);
  90         } else {
  91                 hostapd_drv_hapd_send_eapol(
  92                         hapd, sta->addr, buf, len,
  93                         encrypt, hostapd_sta_flags_to_drv(sta->flags));
  94         }
  95
  96         os_free(buf);
  97 }
  98
  99
 100 void ieee802_1x_set_sta_authorized(struct hostapd_data *hapd,
 101                                    struct sta_info *sta, int authorized)
 102 {
 103         int res;
 104
 105         if (sta->flags & WLAN_STA_PREAUTH)
 106                 return;
 107
 108         if (authorized) {
 109                 ap_sta_set_authorized(hapd, sta, 1);
 110                 res = hostapd_set_authorized(hapd, sta, 1);
 111                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
 112                                HOSTAPD_LEVEL_DEBUG, "authorizing port");
 113         } else {
 114                 ap_sta_set_authorized(hapd, sta, 0);
 115                 res = hostapd_set_authorized(hapd, sta, 0);
 116                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
 117                                HOSTAPD_LEVEL_DEBUG, "unauthorizing port");
 118         }
 119
 120         if (res && errno != ENOENT) {
 121                 wpa_printf(MSG_DEBUG, "Could not set station " MACSTR
 122                            " flags for kernel driver (errno=%d).",
 123                            MAC2STR(sta->addr), errno);
 124         }
 125
 126         if (authorized) {
 127                 os_get_reltime(&sta->connected_time);
 128                 accounting_sta_start(hapd, sta);
 129         }
 130 }
 131
 132
 133 #ifndef CONFIG_FIPS
 134 #ifndef CONFIG_NO_RC4
 135
 136 static void ieee802_1x_tx_key_one(struct hostapd_data *hapd,
 137                                   struct sta_info *sta,
 138                                   int idx, int broadcast,
 139                                   u8 *key_data, size_t key_len)
 140 {
 141         u8 *buf, *ekey;
 142         struct ieee802_1x_hdr *hdr;
 143         struct ieee802_1x_eapol_key *key;
 144         size_t len, ekey_len;
 145         struct eapol_state_machine *sm = sta->eapol_sm;
 146
 147         if (sm == NULL)
 148                 return;
 149
 150         len = sizeof(*key) + key_len;
 151         buf = os_zalloc(sizeof(*hdr) + len);
 152         if (buf == NULL)
 153                 return;
 154
 155         hdr = (struct ieee802_1x_hdr *) buf;
 156         key = (struct ieee802_1x_eapol_key *) (hdr + 1);
 157         key->type = EAPOL_KEY_TYPE_RC4;
 158         WPA_PUT_BE16(key->key_length, key_len);
 159         wpa_get_ntp_timestamp(key->replay_counter);
 160
 161         if (random_get_bytes(key->key_iv, sizeof(key->key_iv))) {
 162                 wpa_printf(MSG_ERROR, "Could not get random numbers");
 163                 os_free(buf);
 164                 return;
 165         }
 166
 167         key->key_index = idx | (broadcast ? 0 : BIT(7));
 168         if (hapd->conf->eapol_key_index_workaround) {
 169                 /* According to some information, WinXP Supplicant seems to
 170                  * interpret bit7 as an indication whether the key is to be
 171                  * activated, so make it possible to enable workaround that
 172                  * sets this bit for all keys. */
 173                 key->key_index |= BIT(7);
 174         }
 175
 176         /* Key is encrypted using "Key-IV + MSK[0..31]" as the RC4-key and
 177          * MSK[32..63] is used to sign the message. */
 178         if (sm->eap_if->eapKeyData == NULL || sm->eap_if->eapKeyDataLen < 64) {
 179                 wpa_printf(MSG_ERROR, "No eapKeyData available for encrypting "
 180                            "and signing EAPOL-Key");
 181                 os_free(buf);
 182                 return;
 183         }
 184         os_memcpy((u8 *) (key + 1), key_data, key_len);
 185         ekey_len = sizeof(key->key_iv) + 32;
 186         ekey = os_malloc(ekey_len);
 187         if (ekey == NULL) {
 188                 wpa_printf(MSG_ERROR, "Could not encrypt key");
 189                 os_free(buf);
 190                 return;
 191         }
 192         os_memcpy(ekey, key->key_iv, sizeof(key->key_iv));
 193         os_memcpy(ekey + sizeof(key->key_iv), sm->eap_if->eapKeyData, 32);
 194         rc4_skip(ekey, ekey_len, 0, (u8 *) (key + 1), key_len);
 195         os_free(ekey);
 196
 197         /* This header is needed here for HMAC-MD5, but it will be regenerated
 198          * in ieee802_1x_send() */
 199         hdr->version = hapd->conf->eapol_version;
 200         hdr->type = IEEE802_1X_TYPE_EAPOL_KEY;
 201         hdr->length = host_to_be16(len);
 202         hmac_md5(sm->eap_if->eapKeyData + 32, 32, buf, sizeof(*hdr) + len,
 203                  key->key_signature);
 204
 205         wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key to " MACSTR
 206                    " (%s index=%d)", MAC2STR(sm->addr),
 207                    broadcast ? "broadcast" : "unicast", idx);
 208         ieee802_1x_send(hapd, sta, IEEE802_1X_TYPE_EAPOL_KEY, (u8 *) key, len);
 209         if (sta->eapol_sm)
 210                 sta->eapol_sm->dot1xAuthEapolFramesTx++;
 211         os_free(buf);
 212 }
 213
 214
 215 static void ieee802_1x_tx_key(struct hostapd_data *hapd, struct sta_info *sta)
 216 {
 217         struct eapol_authenticator *eapol = hapd->eapol_auth;
 218         struct eapol_state_machine *sm = sta->eapol_sm;
 219
 220         if (sm == NULL || !sm->eap_if->eapKeyData)
 221                 return;
 222
 223         wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key(s) to " MACSTR,
 224                    MAC2STR(sta->addr));
 225
 226 #ifndef CONFIG_NO_VLAN
 227         if (sta->vlan_id > 0) {
 228                 wpa_printf(MSG_ERROR, "Using WEP with vlans is not supported.");
 229                 return;
 230         }
 231 #endif /* CONFIG_NO_VLAN */
 232
 233         if (eapol->default_wep_key) {
 234                 ieee802_1x_tx_key_one(hapd, sta, eapol->default_wep_key_idx, 1,
 235                                       eapol->default_wep_key,
 236                                       hapd->conf->default_wep_key_len);
 237         }
 238
 239         if (hapd->conf->individual_wep_key_len > 0) {
 240                 u8 *ikey;
 241                 ikey = os_malloc(hapd->conf->individual_wep_key_len);
 242                 if (ikey == NULL ||
 243                     random_get_bytes(ikey, hapd->conf->individual_wep_key_len))
 244                 {
 245                         wpa_printf(MSG_ERROR, "Could not generate random "
 246                                    "individual WEP key.");
 247                         os_free(ikey);
 248                         return;
 249                 }
 250
 251                 wpa_hexdump_key(MSG_DEBUG, "Individual WEP key",
 252                                 ikey, hapd->conf->individual_wep_key_len);
 253
 254                 ieee802_1x_tx_key_one(hapd, sta, 0, 0, ikey,
 255                                       hapd->conf->individual_wep_key_len);
 256
 257                 /* TODO: set encryption in TX callback, i.e., only after STA
 258                  * has ACKed EAPOL-Key frame */
 259                 if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
 260                                         sta->addr, 0, 1, NULL, 0, ikey,
 261                                         hapd->conf->individual_wep_key_len)) {
 262                         wpa_printf(MSG_ERROR, "Could not set individual WEP "
 263                                    "encryption.");
 264                 }
 265
 266                 os_free(ikey);
 267         }
 268 }
 269
 270 #endif /* CONFIG_NO_RC4 */
 271 #endif /* CONFIG_FIPS */
 272
 273
 274 const char *radius_mode_txt(struct hostapd_data *hapd)
 275 {
 276         switch (hapd->iface->conf->hw_mode) {
 277         case HOSTAPD_MODE_IEEE80211AD:
 278                 return "802.11ad";
 279         case HOSTAPD_MODE_IEEE80211A:
 280                 return "802.11a";
 281         case HOSTAPD_MODE_IEEE80211G:
 282                 return "802.11g";
 283         case HOSTAPD_MODE_IEEE80211B:
 284         default:
 285                 return "802.11b";
 286         }
 287 }
 288
 289
 290 int radius_sta_rate(struct hostapd_data *hapd, struct sta_info *sta)
 291 {
 292         int i;
 293         u8 rate = 0;
 294
 295         for (i = 0; i < sta->supported_rates_len; i++)
 296                 if ((sta->supported_rates[i] & 0x7f) > rate)
 297                         rate = sta->supported_rates[i] & 0x7f;
 298
 299         return rate;
 300 }
 301
 302
 303 #ifndef CONFIG_NO_RADIUS
 304 static void ieee802_1x_learn_identity(struct hostapd_data *hapd,
 305                                       struct eapol_state_machine *sm,
 306                                       const u8 *eap, size_t len)
 307 {
 308         const u8 *identity;
 309         size_t identity_len;
 310         const struct eap_hdr *hdr = (const struct eap_hdr *) eap;
 311
 312         if (len <= sizeof(struct eap_hdr) ||
 313             (hdr->code == EAP_CODE_RESPONSE &&
 314              eap[sizeof(struct eap_hdr)] != EAP_TYPE_IDENTITY) ||
 315             (hdr->code == EAP_CODE_INITIATE &&
 316              eap[sizeof(struct eap_hdr)] != EAP_ERP_TYPE_REAUTH) ||
 317             (hdr->code != EAP_CODE_RESPONSE &&
 318              hdr->code != EAP_CODE_INITIATE))
 319                 return;
 320
 321         eap_erp_update_identity(sm->eap, eap, len);
 322         identity = eap_get_identity(sm->eap, &identity_len);
 323         if (identity == NULL)
 324                 return;
 325
 326         /* Save station identity for future RADIUS packets */
 327         os_free(sm->identity);
 328         sm->identity = (u8 *) dup_binstr(identity, identity_len);
 329         if (sm->identity == NULL) {
 330                 sm->identity_len = 0;
 331                 return;
 332         }
 333
 334         sm->identity_len = identity_len;
 335         hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
 336                        HOSTAPD_LEVEL_DEBUG, "STA identity '%s'", sm->identity);
 337         sm->dot1xAuthEapolRespIdFramesRx++;
 338 }
 339
 340
 341 static int add_common_radius_sta_attr_rsn(struct hostapd_data *hapd,
 342                                           struct hostapd_radius_attr *req_attr,
 343                                           struct sta_info *sta,
 344                                           struct radius_msg *msg)
 345 {
 346         u32 suite;
 347         int ver, val;
 348
 349         ver = wpa_auth_sta_wpa_version(sta->wpa_sm);
 350         val = wpa_auth_get_pairwise(sta->wpa_sm);
 351         suite = wpa_cipher_to_suite(ver, val);
 352         if (val != -1 &&
 353             !hostapd_config_get_radius_attr(req_attr,
 354                                             RADIUS_ATTR_WLAN_PAIRWISE_CIPHER) &&
 355             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_PAIRWISE_CIPHER,
 356                                        suite)) {
 357                 wpa_printf(MSG_ERROR, "Could not add WLAN-Pairwise-Cipher");
 358                 return -1;
 359         }
 360
 361         suite = wpa_cipher_to_suite(((hapd->conf->wpa & 0x2) ||
 362                                      hapd->conf->osen) ?
 363                                     WPA_PROTO_RSN : WPA_PROTO_WPA,
 364                                     hapd->conf->wpa_group);
 365         if (!hostapd_config_get_radius_attr(req_attr,
 366                                             RADIUS_ATTR_WLAN_GROUP_CIPHER) &&
 367             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_GROUP_CIPHER,
 368                                        suite)) {
 369                 wpa_printf(MSG_ERROR, "Could not add WLAN-Group-Cipher");
 370                 return -1;
 371         }
 372
 373         val = wpa_auth_sta_key_mgmt(sta->wpa_sm);
 374         suite = wpa_akm_to_suite(val);
 375         if (val != -1 &&
 376             !hostapd_config_get_radius_attr(req_attr,
 377                                             RADIUS_ATTR_WLAN_AKM_SUITE) &&
 378             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_AKM_SUITE,
 379                                        suite)) {
 380                 wpa_printf(MSG_ERROR, "Could not add WLAN-AKM-Suite");
 381                 return -1;
 382         }
 383
 384 #ifdef CONFIG_IEEE80211W
 385         if (hapd->conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
 386                 suite = wpa_cipher_to_suite(WPA_PROTO_RSN,
 387                                             hapd->conf->group_mgmt_cipher);
 388                 if (!hostapd_config_get_radius_attr(
 389                             req_attr, RADIUS_ATTR_WLAN_GROUP_MGMT_CIPHER) &&
 390                     !radius_msg_add_attr_int32(
 391                             msg, RADIUS_ATTR_WLAN_GROUP_MGMT_CIPHER, suite)) {
 392                         wpa_printf(MSG_ERROR,
 393                                    "Could not add WLAN-Group-Mgmt-Cipher");
 394                         return -1;
 395                 }
 396         }
 397 #endif /* CONFIG_IEEE80211W */
 398
 399         return 0;
 400 }
 401
 402
 403 static int add_common_radius_sta_attr(struct hostapd_data *hapd,
 404                                       struct hostapd_radius_attr *req_attr,
 405                                       struct sta_info *sta,
 406                                       struct radius_msg *msg)
 407 {
 408         char buf[128];
 409
 410         if (!hostapd_config_get_radius_attr(req_attr,
 411                                             RADIUS_ATTR_SERVICE_TYPE) &&
 412             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_SERVICE_TYPE,
 413                                        RADIUS_SERVICE_TYPE_FRAMED)) {
 414                 wpa_printf(MSG_ERROR, "Could not add Service-Type");
 415                 return -1;
 416         }
 417
 418         if (!hostapd_config_get_radius_attr(req_attr,
 419                                             RADIUS_ATTR_NAS_PORT) &&
 420             sta->aid > 0 &&
 421             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT, sta->aid)) {
 422                 wpa_printf(MSG_ERROR, "Could not add NAS-Port");
 423                 return -1;
 424         }
 425
 426         os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
 427                     MAC2STR(sta->addr));
 428         buf[sizeof(buf) - 1] = '\0';
 429         if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
 430                                  (u8 *) buf, os_strlen(buf))) {
 431                 wpa_printf(MSG_ERROR, "Could not add Calling-Station-Id");
 432                 return -1;
 433         }
 434
 435         if (sta->flags & WLAN_STA_PREAUTH) {
 436                 os_strlcpy(buf, "IEEE 802.11i Pre-Authentication",
 437                            sizeof(buf));
 438         } else {
 439                 os_snprintf(buf, sizeof(buf), "CONNECT %d%sMbps %s",
 440                             radius_sta_rate(hapd, sta) / 2,
 441                             (radius_sta_rate(hapd, sta) & 1) ? ".5" : "",
 442                             radius_mode_txt(hapd));
 443                 buf[sizeof(buf) - 1] = '\0';
 444         }
 445         if (!hostapd_config_get_radius_attr(req_attr,
 446                                             RADIUS_ATTR_CONNECT_INFO) &&
 447             !radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
 448                                  (u8 *) buf, os_strlen(buf))) {
 449                 wpa_printf(MSG_ERROR, "Could not add Connect-Info");
 450                 return -1;
 451         }
 452
 453         if (sta->acct_session_id) {
 454                 os_snprintf(buf, sizeof(buf), "%016llX",
 455                             (unsigned long long) sta->acct_session_id);
 456                 if (!radius_msg_add_attr(msg, RADIUS_ATTR_ACCT_SESSION_ID,
 457                                          (u8 *) buf, os_strlen(buf))) {
 458                         wpa_printf(MSG_ERROR, "Could not add Acct-Session-Id");
 459                         return -1;
 460                 }
 461         }
 462
 463         if ((hapd->conf->wpa & 2) &&
 464             !hapd->conf->disable_pmksa_caching &&
 465             sta->eapol_sm && sta->eapol_sm->acct_multi_session_id) {
 466                 os_snprintf(buf, sizeof(buf), "%016llX",
 467                             (unsigned long long)
 468                             sta->eapol_sm->acct_multi_session_id);
 469                 if (!radius_msg_add_attr(
 470                             msg, RADIUS_ATTR_ACCT_MULTI_SESSION_ID,
 471                             (u8 *) buf, os_strlen(buf))) {
 472                         wpa_printf(MSG_INFO,
 473                                    "Could not add Acct-Multi-Session-Id");
 474                         return -1;
 475                 }
 476         }
 477
 478 #ifdef CONFIG_IEEE80211R_AP
 479         if (hapd->conf->wpa && wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt) &&
 480             sta->wpa_sm &&
 481             (wpa_key_mgmt_ft(wpa_auth_sta_key_mgmt(sta->wpa_sm)) ||
 482              sta->auth_alg == WLAN_AUTH_FT) &&
 483             !hostapd_config_get_radius_attr(req_attr,
 484                                             RADIUS_ATTR_MOBILITY_DOMAIN_ID) &&
 485             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_MOBILITY_DOMAIN_ID,
 486                                        WPA_GET_BE16(
 487                                                hapd->conf->mobility_domain))) {
 488                 wpa_printf(MSG_ERROR, "Could not add Mobility-Domain-Id");
 489                 return -1;
 490         }
 491 #endif /* CONFIG_IEEE80211R_AP */
 492
 493         if ((hapd->conf->wpa || hapd->conf->osen) && sta->wpa_sm &&
 494             add_common_radius_sta_attr_rsn(hapd, req_attr, sta, msg) < 0)
 495                 return -1;
 496
 497         return 0;
 498 }
 499
 500
 501 int add_common_radius_attr(struct hostapd_data *hapd,
 502                            struct hostapd_radius_attr *req_attr,
 503                            struct sta_info *sta,
 504                            struct radius_msg *msg)
 505 {
 506         char buf[128];
 507         struct hostapd_radius_attr *attr;
 508         int len;
 509
 510         if (!hostapd_config_get_radius_attr(req_attr,
 511                                             RADIUS_ATTR_NAS_IP_ADDRESS) &&
 512             hapd->conf->own_ip_addr.af == AF_INET &&
 513             !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS,
 514                                  (u8 *) &hapd->conf->own_ip_addr.u.v4, 4)) {
 515                 wpa_printf(MSG_ERROR, "Could not add NAS-IP-Address");
 516                 return -1;
 517         }
 518
 519 #ifdef CONFIG_IPV6
 520         if (!hostapd_config_get_radius_attr(req_attr,
 521                                             RADIUS_ATTR_NAS_IPV6_ADDRESS) &&
 522             hapd->conf->own_ip_addr.af == AF_INET6 &&
 523             !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IPV6_ADDRESS,
 524                                  (u8 *) &hapd->conf->own_ip_addr.u.v6, 16)) {
 525                 wpa_printf(MSG_ERROR, "Could not add NAS-IPv6-Address");
 526                 return -1;
 527         }
 528 #endif /* CONFIG_IPV6 */
 529
 530         if (!hostapd_config_get_radius_attr(req_attr,
 531                                             RADIUS_ATTR_NAS_IDENTIFIER) &&
 532             hapd->conf->nas_identifier &&
 533             !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IDENTIFIER,
 534                                  (u8 *) hapd->conf->nas_identifier,
 535                                  os_strlen(hapd->conf->nas_identifier))) {
 536                 wpa_printf(MSG_ERROR, "Could not add NAS-Identifier");
 537                 return -1;
 538         }
 539
 540         len = os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT ":",
 541                           MAC2STR(hapd->own_addr));
 542         os_memcpy(&buf[len], hapd->conf->ssid.ssid,
 543                   hapd->conf->ssid.ssid_len);
 544         len += hapd->conf->ssid.ssid_len;
 545         if (!hostapd_config_get_radius_attr(req_attr,
 546                                             RADIUS_ATTR_CALLED_STATION_ID) &&
 547             !radius_msg_add_attr(msg, RADIUS_ATTR_CALLED_STATION_ID,
 548                                  (u8 *) buf, len)) {
 549                 wpa_printf(MSG_ERROR, "Could not add Called-Station-Id");
 550                 return -1;
 551         }
 552
 553         if (!hostapd_config_get_radius_attr(req_attr,
 554                                             RADIUS_ATTR_NAS_PORT_TYPE) &&
 555             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT_TYPE,
 556                                        RADIUS_NAS_PORT_TYPE_IEEE_802_11)) {
 557                 wpa_printf(MSG_ERROR, "Could not add NAS-Port-Type");
 558                 return -1;
 559         }
 560
 561 #ifdef CONFIG_INTERWORKING
 562         if (hapd->conf->interworking &&
 563             !is_zero_ether_addr(hapd->conf->hessid)) {
 564                 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
 565                             MAC2STR(hapd->conf->hessid));
 566                 buf[sizeof(buf) - 1] = '\0';
 567                 if (!hostapd_config_get_radius_attr(req_attr,
 568                                                     RADIUS_ATTR_WLAN_HESSID) &&
 569                     !radius_msg_add_attr(msg, RADIUS_ATTR_WLAN_HESSID,
 570                                          (u8 *) buf, os_strlen(buf))) {
 571                         wpa_printf(MSG_ERROR, "Could not add WLAN-HESSID");
 572                         return -1;
 573                 }
 574         }
 575 #endif /* CONFIG_INTERWORKING */
 576
 577         if (sta && add_common_radius_sta_attr(hapd, req_attr, sta, msg) < 0)
 578                 return -1;
 579
 580         for (attr = req_attr; attr; attr = attr->next) {
 581                 if (!radius_msg_add_attr(msg, attr->type,
 582                                          wpabuf_head(attr->val),
 583                                          wpabuf_len(attr->val))) {
 584                         wpa_printf(MSG_ERROR, "Could not add RADIUS "
 585                                    "attribute");
 586                         return -1;
 587                 }
 588         }
 589
 590         return 0;
 591 }
 592
 593
 594 void ieee802_1x_encapsulate_radius(struct hostapd_data *hapd,
 595                                    struct sta_info *sta,
 596                                    const u8 *eap, size_t len)
 597 {
 598         struct radius_msg *msg;
 599         struct eapol_state_machine *sm = sta->eapol_sm;
 600
 601         if (sm == NULL)
 602                 return;
 603
 604         ieee802_1x_learn_identity(hapd, sm, eap, len);
 605
 606         wpa_printf(MSG_DEBUG, "Encapsulating EAP message into a RADIUS "
 607                    "packet");
 608
 609         sm->radius_identifier = radius_client_get_id(hapd->radius);
 610         msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST,
 611                              sm->radius_identifier);
 612         if (msg == NULL) {
 613                 wpa_printf(MSG_INFO, "Could not create new RADIUS packet");
 614                 return;
 615         }
 616
 617         if (radius_msg_make_authenticator(msg) < 0) {
 618                 wpa_printf(MSG_INFO, "Could not make Request Authenticator");
 619                 goto fail;
 620         }
 621
 622         if (sm->identity &&
 623             !radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME,
 624                                  sm->identity, sm->identity_len)) {
 625                 wpa_printf(MSG_INFO, "Could not add User-Name");
 626                 goto fail;
 627         }
 628
 629         if (add_common_radius_attr(hapd, hapd->conf->radius_auth_req_attr, sta,
 630                                    msg) < 0)
 631                 goto fail;
 632
 633         /* TODO: should probably check MTU from driver config; 2304 is max for
 634          * IEEE 802.11, but use 1400 to avoid problems with too large packets
 635          */
 636         if (!hostapd_config_get_radius_attr(hapd->conf->radius_auth_req_attr,
 637                                             RADIUS_ATTR_FRAMED_MTU) &&
 638             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_FRAMED_MTU, 1400)) {
 639                 wpa_printf(MSG_INFO, "Could not add Framed-MTU");
 640                 goto fail;
 641         }
 642
 643         if (!radius_msg_add_eap(msg, eap, len)) {
 644                 wpa_printf(MSG_INFO, "Could not add EAP-Message");
 645                 goto fail;
 646         }
 647
 648         /* State attribute must be copied if and only if this packet is
 649          * Access-Request reply to the previous Access-Challenge */
 650         if (sm->last_recv_radius &&
 651             radius_msg_get_hdr(sm->last_recv_radius)->code ==
 652             RADIUS_CODE_ACCESS_CHALLENGE) {
 653                 int res = radius_msg_copy_attr(msg, sm->last_recv_radius,
 654                                                RADIUS_ATTR_STATE);
 655                 if (res < 0) {
 656                         wpa_printf(MSG_INFO, "Could not copy State attribute from previous Access-Challenge");
 657                         goto fail;
 658                 }
 659                 if (res > 0) {
 660                         wpa_printf(MSG_DEBUG, "Copied RADIUS State Attribute");
 661                 }
 662         }
 663
 664         if (hapd->conf->radius_request_cui) {
 665                 const u8 *cui;
 666                 size_t cui_len;
 667                 /* Add previously learned CUI or nul CUI to request CUI */
 668                 if (sm->radius_cui) {
 669                         cui = wpabuf_head(sm->radius_cui);
 670                         cui_len = wpabuf_len(sm->radius_cui);
 671                 } else {
 672                         cui = (const u8 *) "\0";
 673                         cui_len = 1;
 674                 }
 675                 if (!radius_msg_add_attr(msg,
 676                                          RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
 677                                          cui, cui_len)) {
 678                         wpa_printf(MSG_ERROR, "Could not add CUI");
 679                         goto fail;
 680                 }
 681         }
 682
 683 #ifdef CONFIG_HS20
 684         if (hapd->conf->hs20) {
 685                 u8 ver = hapd->conf->hs20_release - 1;
 686
 687                 if (!radius_msg_add_wfa(
 688                             msg, RADIUS_VENDOR_ATTR_WFA_HS20_AP_VERSION,
 689                             &ver, 1)) {
 690                         wpa_printf(MSG_ERROR, "Could not add HS 2.0 AP "
 691                                    "version");
 692                         goto fail;
 693                 }
 694
 695                 if (sta->hs20_ie && wpabuf_len(sta->hs20_ie) > 0) {
 696                         const u8 *pos;
 697                         u8 buf[3];
 698                         u16 id;
 699                         pos = wpabuf_head_u8(sta->hs20_ie);
 700                         buf[0] = (*pos) >> 4;
 701                         if (((*pos) & HS20_PPS_MO_ID_PRESENT) &&
 702                             wpabuf_len(sta->hs20_ie) >= 3)
 703                                 id = WPA_GET_LE16(pos + 1);
 704                         else
 705                                 id = 0;
 706                         WPA_PUT_BE16(buf + 1, id);
 707                         if (!radius_msg_add_wfa(
 708                                     msg,
 709                                     RADIUS_VENDOR_ATTR_WFA_HS20_STA_VERSION,
 710                                     buf, sizeof(buf))) {
 711                                 wpa_printf(MSG_ERROR, "Could not add HS 2.0 "
 712                                            "STA version");
 713                                 goto fail;
 714                         }
 715                 }
 716
 717                 if (sta->roaming_consortium &&
 718                     !radius_msg_add_wfa(
 719                             msg, RADIUS_VENDOR_ATTR_WFA_HS20_ROAMING_CONSORTIUM,
 720                             wpabuf_head(sta->roaming_consortium),
 721                             wpabuf_len(sta->roaming_consortium))) {
 722                         wpa_printf(MSG_ERROR,
 723                                    "Could not add HS 2.0 Roaming Consortium");
 724                         goto fail;
 725                 }
 726
 727                 if (hapd->conf->t_c_filename) {
 728                         be32 timestamp;
 729
 730                         if (!radius_msg_add_wfa(
 731                                     msg,
 732                                     RADIUS_VENDOR_ATTR_WFA_HS20_T_C_FILENAME,
 733                                     (const u8 *) hapd->conf->t_c_filename,
 734                                     os_strlen(hapd->conf->t_c_filename))) {
 735                                 wpa_printf(MSG_ERROR,
 736                                            "Could not add HS 2.0 T&C Filename");
 737                                 goto fail;
 738                         }
 739
 740                         timestamp = host_to_be32(hapd->conf->t_c_timestamp);
 741                         if (!radius_msg_add_wfa(
 742                                     msg,
 743                                     RADIUS_VENDOR_ATTR_WFA_HS20_TIMESTAMP,
 744                                     (const u8 *) &timestamp,
 745                                     sizeof(timestamp))) {
 746                                 wpa_printf(MSG_ERROR,
 747                                            "Could not add HS 2.0 Timestamp");
 748                                 goto fail;
 749                         }
 750                 }
 751         }
 752 #endif /* CONFIG_HS20 */
 753
 754         if (radius_client_send(hapd->radius, msg, RADIUS_AUTH, sta->addr) < 0)
 755                 goto fail;
 756
 757         return;
 758
 759  fail:
 760         radius_msg_free(msg);
 761 }
 762 #endif /* CONFIG_NO_RADIUS */
 763
 764
 765 static void handle_eap_response(struct hostapd_data *hapd,
 766                                 struct sta_info *sta, struct eap_hdr *eap,
 767                                 size_t len)
 768 {
 769         u8 type, *data;
 770         struct eapol_state_machine *sm = sta->eapol_sm;
 771         if (sm == NULL)
 772                 return;
 773
 774         data = (u8 *) (eap + 1);
 775
 776         if (len < sizeof(*eap) + 1) {
 777                 wpa_printf(MSG_INFO, "handle_eap_response: too short response data");
 778                 return;
 779         }
 780
 781         sm->eap_type_supp = type = data[0];
 782
 783         hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
 784                        HOSTAPD_LEVEL_DEBUG, "received EAP packet (code=%d "
 785                        "id=%d len=%d) from STA: EAP Response-%s (%d)",
 786                        eap->code, eap->identifier, be_to_host16(eap->length),
 787                        eap_server_get_name(0, type), type);
 788
 789         sm->dot1xAuthEapolRespFramesRx++;
 790
 791         wpabuf_free(sm->eap_if->eapRespData);
 792         sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len);
 793         sm->eapolEap = TRUE;
 794 }
 795
 796
 797 static void handle_eap_initiate(struct hostapd_data *hapd,
 798                                 struct sta_info *sta, struct eap_hdr *eap,
 799                                 size_t len)
 800 {
 801 #ifdef CONFIG_ERP
 802         u8 type, *data;
 803         struct eapol_state_machine *sm = sta->eapol_sm;
 804
 805         if (sm == NULL)
 806                 return;
 807
 808         if (len < sizeof(*eap) + 1) {
 809                 wpa_printf(MSG_INFO,
 810                            "handle_eap_initiate: too short response data");
 811                 return;
 812         }
 813
 814         data = (u8 *) (eap + 1);
 815         type = data[0];
 816
 817         hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
 818                        HOSTAPD_LEVEL_DEBUG, "received EAP packet (code=%d "
 819                        "id=%d len=%d) from STA: EAP Initiate type %u",
 820                        eap->code, eap->identifier, be_to_host16(eap->length),
 821                        type);
 822
 823         wpabuf_free(sm->eap_if->eapRespData);
 824         sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len);
 825         sm->eapolEap = TRUE;
 826 #endif /* CONFIG_ERP */
 827 }
 828
 829
 830 /* Process incoming EAP packet from Supplicant */
 831 static void handle_eap(struct hostapd_data *hapd, struct sta_info *sta,
 832                        u8 *buf, size_t len)
 833 {
 834         struct eap_hdr *eap;
 835         u16 eap_len;
 836
 837         if (len < sizeof(*eap)) {
 838                 wpa_printf(MSG_INFO, "   too short EAP packet");
 839                 return;
 840         }
 841
 842         eap = (struct eap_hdr *) buf;
 843
 844         eap_len = be_to_host16(eap->length);
 845         wpa_printf(MSG_DEBUG, "EAP: code=%d identifier=%d length=%d",
 846                    eap->code, eap->identifier, eap_len);
 847         if (eap_len < sizeof(*eap)) {
 848                 wpa_printf(MSG_DEBUG, "   Invalid EAP length");
 849                 return;
 850         } else if (eap_len > len) {
 851                 wpa_printf(MSG_DEBUG, "   Too short frame to contain this EAP "
 852                            "packet");
 853                 return;
 854         } else if (eap_len < len) {
 855                 wpa_printf(MSG_DEBUG, "   Ignoring %lu extra bytes after EAP "
 856                            "packet", (unsigned long) len - eap_len);
 857         }
 858
 859         switch (eap->code) {
 860         case EAP_CODE_REQUEST:
 861                 wpa_printf(MSG_DEBUG, " (request)");
 862                 return;
 863         case EAP_CODE_RESPONSE:
 864                 wpa_printf(MSG_DEBUG, " (response)");
 865                 handle_eap_response(hapd, sta, eap, eap_len);
 866                 break;
 867         case EAP_CODE_SUCCESS:
 868                 wpa_printf(MSG_DEBUG, " (success)");
 869                 return;
 870         case EAP_CODE_FAILURE:
 871                 wpa_printf(MSG_DEBUG, " (failure)");
 872                 return;
 873         case EAP_CODE_INITIATE:
 874                 wpa_printf(MSG_DEBUG, " (initiate)");
 875                 handle_eap_initiate(hapd, sta, eap, eap_len);
 876                 break;
 877         case EAP_CODE_FINISH:
 878                 wpa_printf(MSG_DEBUG, " (finish)");
 879                 break;
 880         default:
 881                 wpa_printf(MSG_DEBUG, " (unknown code)");
 882                 return;
 883         }
 884 }
 885
 886
 887 struct eapol_state_machine *
 888 ieee802_1x_alloc_eapol_sm(struct hostapd_data *hapd, struct sta_info *sta)
 889 {
 890         int flags = 0;
 891         if (sta->flags & WLAN_STA_PREAUTH)
 892                 flags |= EAPOL_SM_PREAUTH;
 893         if (sta->wpa_sm) {
 894                 flags |= EAPOL_SM_USES_WPA;
 895                 if (wpa_auth_sta_get_pmksa(sta->wpa_sm))
 896                         flags |= EAPOL_SM_FROM_PMKSA_CACHE;
 897         }
 898         return eapol_auth_alloc(hapd->eapol_auth, sta->addr, flags,
 899                                 sta->wps_ie, sta->p2p_ie, sta,
 900                                 sta->identity, sta->radius_cui);
 901 }
 902
 903
 904 static void ieee802_1x_save_eapol(struct sta_info *sta, const u8 *buf,
 905                                   size_t len)
 906 {
 907         if (sta->pending_eapol_rx) {
 908                 wpabuf_free(sta->pending_eapol_rx->buf);
 909         } else {
 910                 sta->pending_eapol_rx =
 911                         os_malloc(sizeof(*sta->pending_eapol_rx));
 912                 if (!sta->pending_eapol_rx)
 913                         return;
 914         }
 915
 916         sta->pending_eapol_rx->buf = wpabuf_alloc_copy(buf, len);
 917         if (!sta->pending_eapol_rx->buf) {
 918                 os_free(sta->pending_eapol_rx);
 919                 sta->pending_eapol_rx = NULL;
 920                 return;
 921         }
 922
 923         os_get_reltime(&sta->pending_eapol_rx->rx_time);
 924 }
 925
 926
 927 /**
 928  * ieee802_1x_receive - Process the EAPOL frames from the Supplicant
 929  * @hapd: hostapd BSS data
 930  * @sa: Source address (sender of the EAPOL frame)
 931  * @buf: EAPOL frame
 932  * @len: Length of buf in octets
 933  *
 934  * This function is called for each incoming EAPOL frame from the interface
 935  */
 936 void ieee802_1x_receive(struct hostapd_data *hapd, const u8 *sa, const u8 *buf,
 937                         size_t len)
 938 {
 939         struct sta_info *sta;
 940         struct ieee802_1x_hdr *hdr;
 941         struct ieee802_1x_eapol_key *key;
 942         u16 datalen;
 943         struct rsn_pmksa_cache_entry *pmksa;
 944         int key_mgmt;
 945
 946         if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen &&
 947             !hapd->conf->wps_state)
 948                 return;
 949
 950         wpa_printf(MSG_DEBUG, "IEEE 802.1X: %lu bytes from " MACSTR,
 951                    (unsigned long) len, MAC2STR(sa));
 952         sta = ap_get_sta(hapd, sa);
 953         if (!sta || (!(sta->flags & (WLAN_STA_ASSOC | WLAN_STA_PREAUTH)) &&
 954                      !(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED))) {
 955                 wpa_printf(MSG_DEBUG, "IEEE 802.1X data frame from not "
 956                            "associated/Pre-authenticating STA");
 957
 958                 if (sta && (sta->flags & WLAN_STA_AUTH)) {
 959                         wpa_printf(MSG_DEBUG, "Saving EAPOL frame from " MACSTR
 960                                    " for later use", MAC2STR(sta->addr));
 961                         ieee802_1x_save_eapol(sta, buf, len);
 962                 }
 963
 964                 return;
 965         }
 966
 967         if (len < sizeof(*hdr)) {
 968                 wpa_printf(MSG_INFO, "   too short IEEE 802.1X packet");
 969                 return;
 970         }
 971
 972         hdr = (struct ieee802_1x_hdr *) buf;
 973         datalen = be_to_host16(hdr->length);
 974         wpa_printf(MSG_DEBUG, "   IEEE 802.1X: version=%d type=%d length=%d",
 975                    hdr->version, hdr->type, datalen);
 976
 977         if (len - sizeof(*hdr) < datalen) {
 978                 wpa_printf(MSG_INFO, "   frame too short for this IEEE 802.1X packet");
 979                 if (sta->eapol_sm)
 980                         sta->eapol_sm->dot1xAuthEapLengthErrorFramesRx++;
 981                 return;
 982         }
 983         if (len - sizeof(*hdr) > datalen) {
 984                 wpa_printf(MSG_DEBUG, "   ignoring %lu extra octets after "
 985                            "IEEE 802.1X packet",
 986                            (unsigned long) len - sizeof(*hdr) - datalen);
 987         }
 988
 989         if (sta->eapol_sm) {
 990                 sta->eapol_sm->dot1xAuthLastEapolFrameVersion = hdr->version;
 991                 sta->eapol_sm->dot1xAuthEapolFramesRx++;
 992         }
 993
 994         key = (struct ieee802_1x_eapol_key *) (hdr + 1);
 995         if (datalen >= sizeof(struct ieee802_1x_eapol_key) &&
 996             hdr->type == IEEE802_1X_TYPE_EAPOL_KEY &&
 997             (key->type == EAPOL_KEY_TYPE_WPA ||
 998              key->type == EAPOL_KEY_TYPE_RSN)) {
 999                 wpa_receive(hapd->wpa_auth, sta->wpa_sm, (u8 *) hdr,
1000                             sizeof(*hdr) + datalen);
1001                 return;
1002         }
1003
1004         if (!hapd->conf->ieee802_1x && !hapd->conf->osen &&
1005             !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) {
1006                 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - "
1007                            "802.1X not enabled and WPS not used");
1008                 return;
1009         }
1010
1011         key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
1012         if (key_mgmt != -1 &&
1013             (wpa_key_mgmt_wpa_psk(key_mgmt) || key_mgmt == WPA_KEY_MGMT_OWE ||
1014              key_mgmt == WPA_KEY_MGMT_DPP)) {
1015                 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - "
1016                            "STA is using PSK");
1017                 return;
1018         }
1019
1020         if (!sta->eapol_sm) {
1021                 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
1022                 if (!sta->eapol_sm)
1023                         return;
1024
1025 #ifdef CONFIG_WPS
1026                 if (!hapd->conf->ieee802_1x && hapd->conf->wps_state) {
1027                         u32 wflags = sta->flags & (WLAN_STA_WPS |
1028                                                    WLAN_STA_WPS2 |
1029                                                    WLAN_STA_MAYBE_WPS);
1030                         if (wflags == WLAN_STA_MAYBE_WPS ||
1031                             wflags == (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) {
1032                                 /*
1033                                  * Delay EAPOL frame transmission until a
1034                                  * possible WPS STA initiates the handshake
1035                                  * with EAPOL-Start. Only allow the wait to be
1036                                  * skipped if the STA is known to support WPS
1037                                  * 2.0.
1038                                  */
1039                                 wpa_printf(MSG_DEBUG, "WPS: Do not start "
1040                                            "EAPOL until EAPOL-Start is "
1041                                            "received");
1042                                 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
1043                         }
1044                 }
1045 #endif /* CONFIG_WPS */
1046
1047                 sta->eapol_sm->eap_if->portEnabled = TRUE;
1048         }
1049
1050         /* since we support version 1, we can ignore version field and proceed
1051          * as specified in version 1 standard [IEEE Std 802.1X-2001, 7.5.5] */
1052         /* TODO: actually, we are not version 1 anymore.. However, Version 2
1053          * does not change frame contents, so should be ok to process frames
1054          * more or less identically. Some changes might be needed for
1055          * verification of fields. */
1056
1057         switch (hdr->type) {
1058         case IEEE802_1X_TYPE_EAP_PACKET:
1059                 handle_eap(hapd, sta, (u8 *) (hdr + 1), datalen);
1060                 break;
1061
1062         case IEEE802_1X_TYPE_EAPOL_START:
1063                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1064                                HOSTAPD_LEVEL_DEBUG, "received EAPOL-Start "
1065                                "from STA");
1066                 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
1067                 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
1068                 if (pmksa) {
1069                         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
1070                                        HOSTAPD_LEVEL_DEBUG, "cached PMKSA "
1071                                        "available - ignore it since "
1072                                        "STA sent EAPOL-Start");
1073                         wpa_auth_sta_clear_pmksa(sta->wpa_sm, pmksa);
1074                 }
1075                 sta->eapol_sm->eapolStart = TRUE;
1076                 sta->eapol_sm->dot1xAuthEapolStartFramesRx++;
1077                 eap_server_clear_identity(sta->eapol_sm->eap);
1078                 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
1079                 break;
1080
1081         case IEEE802_1X_TYPE_EAPOL_LOGOFF:
1082                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1083                                HOSTAPD_LEVEL_DEBUG, "received EAPOL-Logoff "
1084                                "from STA");
1085                 sta->acct_terminate_cause =
1086                         RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1087                 accounting_sta_stop(hapd, sta);
1088                 sta->eapol_sm->eapolLogoff = TRUE;
1089                 sta->eapol_sm->dot1xAuthEapolLogoffFramesRx++;
1090                 eap_server_clear_identity(sta->eapol_sm->eap);
1091                 break;
1092
1093         case IEEE802_1X_TYPE_EAPOL_KEY:
1094                 wpa_printf(MSG_DEBUG, "   EAPOL-Key");
1095                 if (!ap_sta_is_authorized(sta)) {
1096                         wpa_printf(MSG_DEBUG, "   Dropped key data from "
1097                                    "unauthorized Supplicant");
1098                         break;
1099                 }
1100                 break;
1101
1102         case IEEE802_1X_TYPE_EAPOL_ENCAPSULATED_ASF_ALERT:
1103                 wpa_printf(MSG_DEBUG, "   EAPOL-Encapsulated-ASF-Alert");
1104                 /* TODO: implement support for this; show data */
1105                 break;
1106
1107         default:
1108                 wpa_printf(MSG_DEBUG, "   unknown IEEE 802.1X packet type");
1109                 sta->eapol_sm->dot1xAuthInvalidEapolFramesRx++;
1110                 break;
1111         }
1112
1113         eapol_auth_step(sta->eapol_sm);
1114 }
1115
1116
1117 /**
1118  * ieee802_1x_new_station - Start IEEE 802.1X authentication
1119  * @hapd: hostapd BSS data
1120  * @sta: The station
1121  *
1122  * This function is called to start IEEE 802.1X authentication when a new
1123  * station completes IEEE 802.11 association.
1124  */
1125 void ieee802_1x_new_station(struct hostapd_data *hapd, struct sta_info *sta)
1126 {
1127         struct rsn_pmksa_cache_entry *pmksa;
1128         int reassoc = 1;
1129         int force_1x = 0;
1130         int key_mgmt;
1131
1132 #ifdef CONFIG_WPS
1133         if (hapd->conf->wps_state &&
1134             ((hapd->conf->wpa && (sta->flags & WLAN_STA_MAYBE_WPS)) ||
1135              (sta->flags & WLAN_STA_WPS))) {
1136                 /*
1137                  * Need to enable IEEE 802.1X/EAPOL state machines for possible
1138                  * WPS handshake even if IEEE 802.1X/EAPOL is not used for
1139                  * authentication in this BSS.
1140                  */
1141                 force_1x = 1;
1142         }
1143 #endif /* CONFIG_WPS */
1144
1145         if (!force_1x && !hapd->conf->ieee802_1x && !hapd->conf->osen) {
1146                 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - "
1147                            "802.1X not enabled or forced for WPS");
1148                 /*
1149                  * Clear any possible EAPOL authenticator state to support
1150                  * reassociation change from WPS to PSK.
1151                  */
1152                 ieee802_1x_free_station(hapd, sta);
1153                 return;
1154         }
1155
1156         key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
1157         if (key_mgmt != -1 &&
1158             (wpa_key_mgmt_wpa_psk(key_mgmt) || key_mgmt == WPA_KEY_MGMT_OWE ||
1159              key_mgmt == WPA_KEY_MGMT_DPP)) {
1160                 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - using PSK");
1161                 /*
1162                  * Clear any possible EAPOL authenticator state to support
1163                  * reassociation change from WPA-EAP to PSK.
1164                  */
1165                 ieee802_1x_free_station(hapd, sta);
1166                 return;
1167         }
1168
1169         if (sta->eapol_sm == NULL) {
1170                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1171                                HOSTAPD_LEVEL_DEBUG, "start authentication");
1172                 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
1173                 if (sta->eapol_sm == NULL) {
1174                         hostapd_logger(hapd, sta->addr,
1175                                        HOSTAPD_MODULE_IEEE8021X,
1176                                        HOSTAPD_LEVEL_INFO,
1177                                        "failed to allocate state machine");
1178                         return;
1179                 }
1180                 reassoc = 0;
1181         }
1182
1183 #ifdef CONFIG_WPS
1184         sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
1185         if (!hapd->conf->ieee802_1x && hapd->conf->wps_state &&
1186             !(sta->flags & WLAN_STA_WPS2)) {
1187                 /*
1188                  * Delay EAPOL frame transmission until a possible WPS STA
1189                  * initiates the handshake with EAPOL-Start. Only allow the
1190                  * wait to be skipped if the STA is known to support WPS 2.0.
1191                  */
1192                 wpa_printf(MSG_DEBUG, "WPS: Do not start EAPOL until "
1193                            "EAPOL-Start is received");
1194                 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
1195         }
1196 #endif /* CONFIG_WPS */
1197
1198         sta->eapol_sm->eap_if->portEnabled = TRUE;
1199
1200 #ifdef CONFIG_IEEE80211R_AP
1201         if (sta->auth_alg == WLAN_AUTH_FT) {
1202                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1203                                HOSTAPD_LEVEL_DEBUG,
1204                                "PMK from FT - skip IEEE 802.1X/EAP");
1205                 /* Setup EAPOL state machines to already authenticated state
1206                  * because of existing FT information from R0KH. */
1207                 sta->eapol_sm->keyRun = TRUE;
1208                 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1209                 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1210                 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1211                 sta->eapol_sm->authSuccess = TRUE;
1212                 sta->eapol_sm->authFail = FALSE;
1213                 sta->eapol_sm->portValid = TRUE;
1214                 if (sta->eapol_sm->eap)
1215                         eap_sm_notify_cached(sta->eapol_sm->eap);
1216                 ap_sta_bind_vlan(hapd, sta);
1217                 return;
1218         }
1219 #endif /* CONFIG_IEEE80211R_AP */
1220
1221 #ifdef CONFIG_FILS
1222         if (sta->auth_alg == WLAN_AUTH_FILS_SK ||
1223             sta->auth_alg == WLAN_AUTH_FILS_SK_PFS ||
1224             sta->auth_alg == WLAN_AUTH_FILS_PK) {
1225                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1226                                HOSTAPD_LEVEL_DEBUG,
1227                                "PMK from FILS - skip IEEE 802.1X/EAP");
1228                 /* Setup EAPOL state machines to already authenticated state
1229                  * because of existing FILS information. */
1230                 sta->eapol_sm->keyRun = TRUE;
1231                 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1232                 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1233                 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1234                 sta->eapol_sm->authSuccess = TRUE;
1235                 sta->eapol_sm->authFail = FALSE;
1236                 sta->eapol_sm->portValid = TRUE;
1237                 if (sta->eapol_sm->eap)
1238                         eap_sm_notify_cached(sta->eapol_sm->eap);
1239                 wpa_auth_set_ptk_rekey_timer(sta->wpa_sm);
1240                 return;
1241         }
1242 #endif /* CONFIG_FILS */
1243
1244         pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
1245         if (pmksa) {
1246                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1247                                HOSTAPD_LEVEL_DEBUG,
1248                                "PMK from PMKSA cache - skip IEEE 802.1X/EAP");
1249                 /* Setup EAPOL state machines to already authenticated state
1250                  * because of existing PMKSA information in the cache. */
1251                 sta->eapol_sm->keyRun = TRUE;
1252                 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1253                 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1254                 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1255                 sta->eapol_sm->authSuccess = TRUE;
1256                 sta->eapol_sm->authFail = FALSE;
1257                 if (sta->eapol_sm->eap)
1258                         eap_sm_notify_cached(sta->eapol_sm->eap);
1259                 pmksa_cache_to_eapol_data(hapd, pmksa, sta->eapol_sm);
1260                 ap_sta_bind_vlan(hapd, sta);
1261         } else {
1262                 if (reassoc) {
1263                         /*
1264                          * Force EAPOL state machines to start
1265                          * re-authentication without having to wait for the
1266                          * Supplicant to send EAPOL-Start.
1267                          */
1268                         sta->eapol_sm->reAuthenticate = TRUE;
1269                 }
1270                 eapol_auth_step(sta->eapol_sm);
1271         }
1272 }
1273
1274
1275 void ieee802_1x_free_station(struct hostapd_data *hapd, struct sta_info *sta)
1276 {
1277         struct eapol_state_machine *sm = sta->eapol_sm;
1278
1279 #ifdef CONFIG_HS20
1280         eloop_cancel_timeout(ieee802_1x_wnm_notif_send, hapd, sta);
1281 #endif /* CONFIG_HS20 */
1282
1283         if (sta->pending_eapol_rx) {
1284                 wpabuf_free(sta->pending_eapol_rx->buf);
1285                 os_free(sta->pending_eapol_rx);
1286                 sta->pending_eapol_rx = NULL;
1287         }
1288
1289         if (sm == NULL)
1290                 return;
1291
1292         sta->eapol_sm = NULL;
1293
1294 #ifndef CONFIG_NO_RADIUS
1295         radius_msg_free(sm->last_recv_radius);
1296         radius_free_class(&sm->radius_class);
1297 #endif /* CONFIG_NO_RADIUS */
1298
1299         eapol_auth_free(sm);
1300 }
1301
1302
1303 #ifndef CONFIG_NO_RADIUS
1304 static void ieee802_1x_decapsulate_radius(struct hostapd_data *hapd,
1305                                           struct sta_info *sta)
1306 {
1307         struct wpabuf *eap;
1308         const struct eap_hdr *hdr;
1309         int eap_type = -1;
1310         char buf[64];
1311         struct radius_msg *msg;
1312         struct eapol_state_machine *sm = sta->eapol_sm;
1313
1314         if (sm == NULL || sm->last_recv_radius == NULL) {
1315                 if (sm)
1316                         sm->eap_if->aaaEapNoReq = TRUE;
1317                 return;
1318         }
1319
1320         msg = sm->last_recv_radius;
1321
1322         eap = radius_msg_get_eap(msg);
1323         if (eap == NULL) {
1324                 /* RFC 3579, Chap. 2.6.3:
1325                  * RADIUS server SHOULD NOT send Access-Reject/no EAP-Message
1326                  * attribute */
1327                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1328                                HOSTAPD_LEVEL_WARNING, "could not extract "
1329                                "EAP-Message from RADIUS message");
1330                 sm->eap_if->aaaEapNoReq = TRUE;
1331                 return;
1332         }
1333
1334         if (wpabuf_len(eap) < sizeof(*hdr)) {
1335                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1336                                HOSTAPD_LEVEL_WARNING, "too short EAP packet "
1337                                "received from authentication server");
1338                 wpabuf_free(eap);
1339                 sm->eap_if->aaaEapNoReq = TRUE;
1340                 return;
1341         }
1342
1343         if (wpabuf_len(eap) > sizeof(*hdr))
1344                 eap_type = (wpabuf_head_u8(eap))[sizeof(*hdr)];
1345
1346         hdr = wpabuf_head(eap);
1347         switch (hdr->code) {
1348         case EAP_CODE_REQUEST:
1349                 if (eap_type >= 0)
1350                         sm->eap_type_authsrv = eap_type;
1351                 os_snprintf(buf, sizeof(buf), "EAP-Request-%s (%d)",
1352                             eap_server_get_name(0, eap_type), eap_type);
1353                 break;
1354         case EAP_CODE_RESPONSE:
1355                 os_snprintf(buf, sizeof(buf), "EAP Response-%s (%d)",
1356                             eap_server_get_name(0, eap_type), eap_type);
1357                 break;
1358         case EAP_CODE_SUCCESS:
1359                 os_strlcpy(buf, "EAP Success", sizeof(buf));
1360                 break;
1361         case EAP_CODE_FAILURE:
1362                 os_strlcpy(buf, "EAP Failure", sizeof(buf));
1363                 break;
1364         default:
1365                 os_strlcpy(buf, "unknown EAP code", sizeof(buf));
1366                 break;
1367         }
1368         buf[sizeof(buf) - 1] = '\0';
1369         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1370                        HOSTAPD_LEVEL_DEBUG, "decapsulated EAP packet (code=%d "
1371                        "id=%d len=%d) from RADIUS server: %s",
1372                        hdr->code, hdr->identifier, be_to_host16(hdr->length),
1373                        buf);
1374         sm->eap_if->aaaEapReq = TRUE;
1375
1376         wpabuf_free(sm->eap_if->aaaEapReqData);
1377         sm->eap_if->aaaEapReqData = eap;
1378 }
1379
1380
1381 static void ieee802_1x_get_keys(struct hostapd_data *hapd,
1382                                 struct sta_info *sta, struct radius_msg *msg,
1383                                 struct radius_msg *req,
1384                                 const u8 *shared_secret,
1385                                 size_t shared_secret_len)
1386 {
1387         struct radius_ms_mppe_keys *keys;
1388         struct eapol_state_machine *sm = sta->eapol_sm;
1389         if (sm == NULL)
1390                 return;
1391
1392         keys = radius_msg_get_ms_keys(msg, req, shared_secret,
1393                                       shared_secret_len);
1394
1395         if (keys && keys->send && keys->recv) {
1396                 size_t len = keys->send_len + keys->recv_len;
1397                 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Send-Key",
1398                                 keys->send, keys->send_len);
1399                 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Recv-Key",
1400                                 keys->recv, keys->recv_len);
1401
1402                 os_free(sm->eap_if->aaaEapKeyData);
1403                 sm->eap_if->aaaEapKeyData = os_malloc(len);
1404                 if (sm->eap_if->aaaEapKeyData) {
1405                         os_memcpy(sm->eap_if->aaaEapKeyData, keys->recv,
1406                                   keys->recv_len);
1407                         os_memcpy(sm->eap_if->aaaEapKeyData + keys->recv_len,
1408                                   keys->send, keys->send_len);
1409                         sm->eap_if->aaaEapKeyDataLen = len;
1410                         sm->eap_if->aaaEapKeyAvailable = TRUE;
1411                 }
1412         } else {
1413                 wpa_printf(MSG_DEBUG,
1414                            "MS-MPPE: 1x_get_keys, could not get keys: %p  send: %p  recv: %p",
1415                            keys, keys ? keys->send : NULL,
1416                            keys ? keys->recv : NULL);
1417         }
1418
1419         if (keys) {
1420                 os_free(keys->send);
1421                 os_free(keys->recv);
1422                 os_free(keys);
1423         }
1424 }
1425
1426
1427 static void ieee802_1x_store_radius_class(struct hostapd_data *hapd,
1428                                           struct sta_info *sta,
1429                                           struct radius_msg *msg)
1430 {
1431         u8 *attr_class;
1432         size_t class_len;
1433         struct eapol_state_machine *sm = sta->eapol_sm;
1434         int count, i;
1435         struct radius_attr_data *nclass;
1436         size_t nclass_count;
1437
1438         if (!hapd->conf->radius->acct_server || hapd->radius == NULL ||
1439             sm == NULL)
1440                 return;
1441
1442         radius_free_class(&sm->radius_class);
1443         count = radius_msg_count_attr(msg, RADIUS_ATTR_CLASS, 1);
1444         if (count <= 0)
1445                 return;
1446
1447         nclass = os_calloc(count, sizeof(struct radius_attr_data));
1448         if (nclass == NULL)
1449                 return;
1450
1451         nclass_count = 0;
1452
1453         attr_class = NULL;
1454         for (i = 0; i < count; i++) {
1455                 do {
1456                         if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CLASS,
1457                                                     &attr_class, &class_len,
1458                                                     attr_class) < 0) {
1459                                 i = count;
1460                                 break;
1461                         }
1462                 } while (class_len < 1);
1463
1464                 nclass[nclass_count].data = os_memdup(attr_class, class_len);
1465                 if (nclass[nclass_count].data == NULL)
1466                         break;
1467
1468                 nclass[nclass_count].len = class_len;
1469                 nclass_count++;
1470         }
1471
1472         sm->radius_class.attr = nclass;
1473         sm->radius_class.count = nclass_count;
1474         wpa_printf(MSG_DEBUG, "IEEE 802.1X: Stored %lu RADIUS Class "
1475                    "attributes for " MACSTR,
1476                    (unsigned long) sm->radius_class.count,
1477                    MAC2STR(sta->addr));
1478 }
1479
1480
1481 /* Update sta->identity based on User-Name attribute in Access-Accept */
1482 static void ieee802_1x_update_sta_identity(struct hostapd_data *hapd,
1483                                            struct sta_info *sta,
1484                                            struct radius_msg *msg)
1485 {
1486         u8 *buf, *identity;
1487         size_t len;
1488         struct eapol_state_machine *sm = sta->eapol_sm;
1489
1490         if (sm == NULL)
1491                 return;
1492
1493         if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME, &buf, &len,
1494                                     NULL) < 0)
1495                 return;
1496
1497         identity = (u8 *) dup_binstr(buf, len);
1498         if (identity == NULL)
1499                 return;
1500
1501         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1502                        HOSTAPD_LEVEL_DEBUG, "old identity '%s' updated with "
1503                        "User-Name from Access-Accept '%s'",
1504                        sm->identity ? (char *) sm->identity : "N/A",
1505                        (char *) identity);
1506
1507         os_free(sm->identity);
1508         sm->identity = identity;
1509         sm->identity_len = len;
1510 }
1511
1512
1513 /* Update CUI based on Chargeable-User-Identity attribute in Access-Accept */
1514 static void ieee802_1x_update_sta_cui(struct hostapd_data *hapd,
1515                                       struct sta_info *sta,
1516                                       struct radius_msg *msg)
1517 {
1518         struct eapol_state_machine *sm = sta->eapol_sm;
1519         struct wpabuf *cui;
1520         u8 *buf;
1521         size_t len;
1522
1523         if (sm == NULL)
1524                 return;
1525
1526         if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
1527                                     &buf, &len, NULL) < 0)
1528                 return;
1529
1530         cui = wpabuf_alloc_copy(buf, len);
1531         if (cui == NULL)
1532                 return;
1533
1534         wpabuf_free(sm->radius_cui);
1535         sm->radius_cui = cui;
1536 }
1537
1538
1539 #ifdef CONFIG_HS20
1540
1541 static void ieee802_1x_hs20_sub_rem(struct sta_info *sta, u8 *pos, size_t len)
1542 {
1543         sta->remediation = 1;
1544         os_free(sta->remediation_url);
1545         if (len > 2) {
1546                 sta->remediation_url = os_malloc(len);
1547                 if (!sta->remediation_url)
1548                         return;
1549                 sta->remediation_method = pos[0];
1550                 os_memcpy(sta->remediation_url, pos + 1, len - 1);
1551                 sta->remediation_url[len - 1] = '\0';
1552                 wpa_printf(MSG_DEBUG, "HS 2.0: Subscription remediation needed "
1553                            "for " MACSTR " - server method %u URL %s",
1554                            MAC2STR(sta->addr), sta->remediation_method,
1555                            sta->remediation_url);
1556         } else {
1557                 sta->remediation_url = NULL;
1558                 wpa_printf(MSG_DEBUG, "HS 2.0: Subscription remediation needed "
1559                            "for " MACSTR, MAC2STR(sta->addr));
1560         }
1561         /* TODO: assign the STA into remediation VLAN or add filtering */
1562 }
1563
1564
1565 static void ieee802_1x_hs20_deauth_req(struct hostapd_data *hapd,
1566                                        struct sta_info *sta, u8 *pos,
1567                                        size_t len)
1568 {
1569         if (len < 3)
1570                 return; /* Malformed information */
1571         sta->hs20_deauth_requested = 1;
1572         wpa_printf(MSG_DEBUG, "HS 2.0: Deauthentication request - Code %u  "
1573                    "Re-auth Delay %u",
1574                    *pos, WPA_GET_LE16(pos + 1));
1575         wpabuf_free(sta->hs20_deauth_req);
1576         sta->hs20_deauth_req = wpabuf_alloc(len + 1);
1577         if (sta->hs20_deauth_req) {
1578                 wpabuf_put_data(sta->hs20_deauth_req, pos, 3);
1579                 wpabuf_put_u8(sta->hs20_deauth_req, len - 3);
1580                 wpabuf_put_data(sta->hs20_deauth_req, pos + 3, len - 3);
1581         }
1582         ap_sta_session_timeout(hapd, sta, hapd->conf->hs20_deauth_req_timeout);
1583 }
1584
1585
1586 static void ieee802_1x_hs20_session_info(struct hostapd_data *hapd,
1587                                          struct sta_info *sta, u8 *pos,
1588                                          size_t len, int session_timeout)
1589 {
1590         unsigned int swt;
1591         int warning_time, beacon_int;
1592
1593         if (len < 1)
1594                 return; /* Malformed information */
1595         os_free(sta->hs20_session_info_url);
1596         sta->hs20_session_info_url = os_malloc(len);
1597         if (sta->hs20_session_info_url == NULL)
1598                 return;
1599         swt = pos[0];
1600         os_memcpy(sta->hs20_session_info_url, pos + 1, len - 1);
1601         sta->hs20_session_info_url[len - 1] = '\0';
1602         wpa_printf(MSG_DEBUG, "HS 2.0: Session Information URL='%s' SWT=%u "
1603                    "(session_timeout=%d)",
1604                    sta->hs20_session_info_url, swt, session_timeout);
1605         if (session_timeout < 0) {
1606                 wpa_printf(MSG_DEBUG, "HS 2.0: No Session-Timeout set - ignore session info URL");
1607                 return;
1608         }
1609         if (swt == 255)
1610                 swt = 1; /* Use one minute as the AP selected value */
1611
1612         if ((unsigned int) session_timeout < swt * 60)
1613                 warning_time = 0;
1614         else
1615                 warning_time = session_timeout - swt * 60;
1616
1617         beacon_int = hapd->iconf->beacon_int;
1618         if (beacon_int < 1)
1619                 beacon_int = 100; /* best guess */
1620         sta->hs20_disassoc_timer = swt * 60 * 1000 / beacon_int * 125 / 128;
1621         if (sta->hs20_disassoc_timer > 65535)
1622                 sta->hs20_disassoc_timer = 65535;
1623
1624         ap_sta_session_warning_timeout(hapd, sta, warning_time);
1625 }
1626
1627
1628 static void ieee802_1x_hs20_t_c_filtering(struct hostapd_data *hapd,
1629                                           struct sta_info *sta, u8 *pos,
1630                                           size_t len)
1631 {
1632         if (len < 4)
1633                 return; /* Malformed information */
1634         wpa_printf(MSG_DEBUG,
1635                    "HS 2.0: Terms and Conditions filtering %02x %02x %02x %02x",
1636                    pos[0], pos[1], pos[2], pos[3]);
1637         hs20_t_c_filtering(hapd, sta, pos[0] & BIT(0));
1638 }
1639
1640
1641 static void ieee802_1x_hs20_t_c_url(struct hostapd_data *hapd,
1642                                     struct sta_info *sta, u8 *pos, size_t len)
1643 {
1644         os_free(sta->t_c_url);
1645         sta->t_c_url = os_malloc(len + 1);
1646         if (!sta->t_c_url)
1647                 return;
1648         os_memcpy(sta->t_c_url, pos, len);
1649         sta->t_c_url[len] = '\0';
1650         wpa_printf(MSG_DEBUG,
1651                    "HS 2.0: Terms and Conditions URL %s", sta->t_c_url);
1652 }
1653
1654 #endif /* CONFIG_HS20 */
1655
1656
1657 static void ieee802_1x_check_hs20(struct hostapd_data *hapd,
1658                                   struct sta_info *sta,
1659                                   struct radius_msg *msg,
1660                                   int session_timeout)
1661 {
1662 #ifdef CONFIG_HS20
1663         u8 *buf, *pos, *end, type, sublen;
1664         size_t len;
1665
1666         buf = NULL;
1667         sta->remediation = 0;
1668         sta->hs20_deauth_requested = 0;
1669
1670         for (;;) {
1671                 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_VENDOR_SPECIFIC,
1672                                             &buf, &len, buf) < 0)
1673                         break;
1674                 if (len < 6)
1675                         continue;
1676                 pos = buf;
1677                 end = buf + len;
1678                 if (WPA_GET_BE32(pos) != RADIUS_VENDOR_ID_WFA)
1679                         continue;
1680                 pos += 4;
1681
1682                 type = *pos++;
1683                 sublen = *pos++;
1684                 if (sublen < 2)
1685                         continue; /* invalid length */
1686                 sublen -= 2; /* skip header */
1687                 if (pos + sublen > end)
1688                         continue; /* invalid WFA VSA */
1689
1690                 switch (type) {
1691                 case RADIUS_VENDOR_ATTR_WFA_HS20_SUBSCR_REMEDIATION:
1692                         ieee802_1x_hs20_sub_rem(sta, pos, sublen);
1693                         break;
1694                 case RADIUS_VENDOR_ATTR_WFA_HS20_DEAUTH_REQ:
1695                         ieee802_1x_hs20_deauth_req(hapd, sta, pos, sublen);
1696                         break;
1697                 case RADIUS_VENDOR_ATTR_WFA_HS20_SESSION_INFO_URL:
1698                         ieee802_1x_hs20_session_info(hapd, sta, pos, sublen,
1699                                                      session_timeout);
1700                         break;
1701                 case RADIUS_VENDOR_ATTR_WFA_HS20_T_C_FILTERING:
1702                         ieee802_1x_hs20_t_c_filtering(hapd, sta, pos, sublen);
1703                         break;
1704                 case RADIUS_VENDOR_ATTR_WFA_HS20_T_C_URL:
1705                         ieee802_1x_hs20_t_c_url(hapd, sta, pos, sublen);
1706                         break;
1707                 }
1708         }
1709 #endif /* CONFIG_HS20 */
1710 }
1711
1712
1713 struct sta_id_search {
1714         u8 identifier;
1715         struct eapol_state_machine *sm;
1716 };
1717
1718
1719 static int ieee802_1x_select_radius_identifier(struct hostapd_data *hapd,
1720                                                struct sta_info *sta,
1721                                                void *ctx)
1722 {
1723         struct sta_id_search *id_search = ctx;
1724         struct eapol_state_machine *sm = sta->eapol_sm;
1725
1726         if (sm && sm->radius_identifier >= 0 &&
1727             sm->radius_identifier == id_search->identifier) {
1728                 id_search->sm = sm;
1729                 return 1;
1730         }
1731         return 0;
1732 }
1733
1734
1735 static struct eapol_state_machine *
1736 ieee802_1x_search_radius_identifier(struct hostapd_data *hapd, u8 identifier)
1737 {
1738         struct sta_id_search id_search;
1739         id_search.identifier = identifier;
1740         id_search.sm = NULL;
1741         ap_for_each_sta(hapd, ieee802_1x_select_radius_identifier, &id_search);
1742         return id_search.sm;
1743 }
1744
1745
1746 #ifndef CONFIG_NO_VLAN
1747 static int ieee802_1x_update_vlan(struct radius_msg *msg,
1748                                   struct hostapd_data *hapd,
1749                                   struct sta_info *sta)
1750 {
1751         struct vlan_description vlan_desc;
1752
1753         os_memset(&vlan_desc, 0, sizeof(vlan_desc));
1754         vlan_desc.notempty = !!radius_msg_get_vlanid(msg, &vlan_desc.untagged,
1755                                                      MAX_NUM_TAGGED_VLAN,
1756                                                      vlan_desc.tagged);
1757
1758         if (vlan_desc.notempty &&
1759             !hostapd_vlan_valid(hapd->conf->vlan, &vlan_desc)) {
1760                 sta->eapol_sm->authFail = TRUE;
1761                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
1762                                HOSTAPD_LEVEL_INFO,
1763                                "Invalid VLAN %d%s received from RADIUS server",
1764                                vlan_desc.untagged,
1765                                vlan_desc.tagged[0] ? "+" : "");
1766                 os_memset(&vlan_desc, 0, sizeof(vlan_desc));
1767                 ap_sta_set_vlan(hapd, sta, &vlan_desc);
1768                 return -1;
1769         }
1770
1771         if (hapd->conf->ssid.dynamic_vlan == DYNAMIC_VLAN_REQUIRED &&
1772             !vlan_desc.notempty) {
1773                 sta->eapol_sm->authFail = TRUE;
1774                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1775                                HOSTAPD_LEVEL_INFO,
1776                                "authentication server did not include required VLAN ID in Access-Accept");
1777                 return -1;
1778         }
1779
1780         return ap_sta_set_vlan(hapd, sta, &vlan_desc);
1781 }
1782 #endif /* CONFIG_NO_VLAN */
1783
1784
1785 /**
1786  * ieee802_1x_receive_auth - Process RADIUS frames from Authentication Server
1787  * @msg: RADIUS response message
1788  * @req: RADIUS request message
1789  * @shared_secret: RADIUS shared secret
1790  * @shared_secret_len: Length of shared_secret in octets
1791  * @data: Context data (struct hostapd_data *)
1792  * Returns: Processing status
1793  */
1794 static RadiusRxResult
1795 ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req,
1796                         const u8 *shared_secret, size_t shared_secret_len,
1797                         void *data)
1798 {
1799         struct hostapd_data *hapd = data;
1800         struct sta_info *sta;
1801         u32 session_timeout = 0, termination_action, acct_interim_interval;
1802         int session_timeout_set;
1803         u32 reason_code;
1804         struct eapol_state_machine *sm;
1805         int override_eapReq = 0;
1806         struct radius_hdr *hdr = radius_msg_get_hdr(msg);
1807
1808         sm = ieee802_1x_search_radius_identifier(hapd, hdr->identifier);
1809         if (sm == NULL) {
1810                 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Could not find matching "
1811                            "station for this RADIUS message");
1812                 return RADIUS_RX_UNKNOWN;
1813         }
1814         sta = sm->sta;
1815
1816         /* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be
1817          * present when packet contains an EAP-Message attribute */
1818         if (hdr->code == RADIUS_CODE_ACCESS_REJECT &&
1819             radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL,
1820                                 0) < 0 &&
1821             radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) {
1822                 wpa_printf(MSG_DEBUG, "Allowing RADIUS Access-Reject without "
1823                            "Message-Authenticator since it does not include "
1824                            "EAP-Message");
1825         } else if (radius_msg_verify(msg, shared_secret, shared_secret_len,
1826                                      req, 1)) {
1827                 wpa_printf(MSG_INFO, "Incoming RADIUS packet did not have correct Message-Authenticator - dropped");
1828                 return RADIUS_RX_INVALID_AUTHENTICATOR;
1829         }
1830
1831         if (hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
1832             hdr->code != RADIUS_CODE_ACCESS_REJECT &&
1833             hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) {
1834                 wpa_printf(MSG_INFO, "Unknown RADIUS message code");
1835                 return RADIUS_RX_UNKNOWN;
1836         }
1837
1838         sm->radius_identifier = -1;
1839         wpa_printf(MSG_DEBUG, "RADIUS packet matching with station " MACSTR,
1840                    MAC2STR(sta->addr));
1841
1842         radius_msg_free(sm->last_recv_radius);
1843         sm->last_recv_radius = msg;
1844
1845         session_timeout_set =
1846                 !radius_msg_get_attr_int32(msg, RADIUS_ATTR_SESSION_TIMEOUT,
1847                                            &session_timeout);
1848         if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_TERMINATION_ACTION,
1849                                       &termination_action))
1850                 termination_action = RADIUS_TERMINATION_ACTION_DEFAULT;
1851
1852         if (hapd->conf->acct_interim_interval == 0 &&
1853             hdr->code == RADIUS_CODE_ACCESS_ACCEPT &&
1854             radius_msg_get_attr_int32(msg, RADIUS_ATTR_ACCT_INTERIM_INTERVAL,
1855                                       &acct_interim_interval) == 0) {
1856                 if (acct_interim_interval < 60) {
1857                         hostapd_logger(hapd, sta->addr,
1858                                        HOSTAPD_MODULE_IEEE8021X,
1859                                        HOSTAPD_LEVEL_INFO,
1860                                        "ignored too small "
1861                                        "Acct-Interim-Interval %d",
1862                                        acct_interim_interval);
1863                 } else
1864                         sta->acct_interim_interval = acct_interim_interval;
1865         }
1866
1867
1868         switch (hdr->code) {
1869         case RADIUS_CODE_ACCESS_ACCEPT:
1870 #ifndef CONFIG_NO_VLAN
1871                 if (hapd->conf->ssid.dynamic_vlan != DYNAMIC_VLAN_DISABLED &&
1872                     ieee802_1x_update_vlan(msg, hapd, sta) < 0)
1873                         break;
1874
1875                 if (sta->vlan_id > 0) {
1876                         hostapd_logger(hapd, sta->addr,
1877                                        HOSTAPD_MODULE_RADIUS,
1878                                        HOSTAPD_LEVEL_INFO,
1879                                        "VLAN ID %d", sta->vlan_id);
1880                 }
1881
1882                 if ((sta->flags & WLAN_STA_ASSOC) &&
1883                     ap_sta_bind_vlan(hapd, sta) < 0)
1884                         break;
1885 #endif /* CONFIG_NO_VLAN */
1886
1887                 sta->session_timeout_set = !!session_timeout_set;
1888                 os_get_reltime(&sta->session_timeout);
1889                 sta->session_timeout.sec += session_timeout;
1890
1891                 /* RFC 3580, Ch. 3.17 */
1892                 if (session_timeout_set && termination_action ==
1893                     RADIUS_TERMINATION_ACTION_RADIUS_REQUEST)
1894                         sm->reAuthPeriod = session_timeout;
1895                 else if (session_timeout_set)
1896                         ap_sta_session_timeout(hapd, sta, session_timeout);
1897                 else
1898                         ap_sta_no_session_timeout(hapd, sta);
1899
1900                 sm->eap_if->aaaSuccess = TRUE;
1901                 override_eapReq = 1;
1902                 ieee802_1x_get_keys(hapd, sta, msg, req, shared_secret,
1903                                     shared_secret_len);
1904                 ieee802_1x_store_radius_class(hapd, sta, msg);
1905                 ieee802_1x_update_sta_identity(hapd, sta, msg);
1906                 ieee802_1x_update_sta_cui(hapd, sta, msg);
1907                 ieee802_1x_check_hs20(hapd, sta, msg,
1908                                       session_timeout_set ?
1909                                       (int) session_timeout : -1);
1910                 break;
1911         case RADIUS_CODE_ACCESS_REJECT:
1912                 sm->eap_if->aaaFail = TRUE;
1913                 override_eapReq = 1;
1914                 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_WLAN_REASON_CODE,
1915                                               &reason_code) == 0) {
1916                         wpa_printf(MSG_DEBUG,
1917                                    "RADIUS server indicated WLAN-Reason-Code %u in Access-Reject for "
1918                                    MACSTR, reason_code, MAC2STR(sta->addr));
1919                         sta->disconnect_reason_code = reason_code;
1920                 }
1921                 break;
1922         case RADIUS_CODE_ACCESS_CHALLENGE:
1923                 sm->eap_if->aaaEapReq = TRUE;
1924                 if (session_timeout_set) {
1925                         /* RFC 2869, Ch. 2.3.2; RFC 3580, Ch. 3.17 */
1926                         sm->eap_if->aaaMethodTimeout = session_timeout;
1927                         hostapd_logger(hapd, sm->addr,
1928                                        HOSTAPD_MODULE_IEEE8021X,
1929                                        HOSTAPD_LEVEL_DEBUG,
1930                                        "using EAP timeout of %d seconds (from "
1931                                        "RADIUS)",
1932                                        sm->eap_if->aaaMethodTimeout);
1933                 } else {
1934                         /*
1935                          * Use dynamic retransmission behavior per EAP
1936                          * specification.
1937                          */
1938                         sm->eap_if->aaaMethodTimeout = 0;
1939                 }
1940                 break;
1941         }
1942
1943         ieee802_1x_decapsulate_radius(hapd, sta);
1944         if (override_eapReq)
1945                 sm->eap_if->aaaEapReq = FALSE;
1946
1947 #ifdef CONFIG_FILS
1948 #ifdef NEED_AP_MLME
1949         if (sta->flags & WLAN_STA_PENDING_FILS_ERP) {
1950                 /* TODO: Add a PMKSA entry on success? */
1951                 ieee802_11_finish_fils_auth(
1952                         hapd, sta, hdr->code == RADIUS_CODE_ACCESS_ACCEPT,
1953                         sm->eap_if->aaaEapReqData,
1954                         sm->eap_if->aaaEapKeyData,
1955                         sm->eap_if->aaaEapKeyDataLen);
1956         }
1957 #endif /* NEED_AP_MLME */
1958 #endif /* CONFIG_FILS */
1959
1960         eapol_auth_step(sm);
1961
1962         return RADIUS_RX_QUEUED;
1963 }
1964 #endif /* CONFIG_NO_RADIUS */
1965
1966
1967 void ieee802_1x_abort_auth(struct hostapd_data *hapd, struct sta_info *sta)
1968 {
1969         struct eapol_state_machine *sm = sta->eapol_sm;
1970         if (sm == NULL)
1971                 return;
1972
1973         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1974                        HOSTAPD_LEVEL_DEBUG, "aborting authentication");
1975
1976 #ifndef CONFIG_NO_RADIUS
1977         radius_msg_free(sm->last_recv_radius);
1978         sm->last_recv_radius = NULL;
1979 #endif /* CONFIG_NO_RADIUS */
1980
1981         if (sm->eap_if->eapTimeout) {
1982                 /*
1983                  * Disconnect the STA since it did not reply to the last EAP
1984                  * request and we cannot continue EAP processing (EAP-Failure
1985                  * could only be sent if the EAP peer actually replied).
1986                  */
1987                 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "EAP Timeout, STA " MACSTR,
1988                         MAC2STR(sta->addr));
1989
1990                 sm->eap_if->portEnabled = FALSE;
1991                 ap_sta_disconnect(hapd, sta, sta->addr,
1992                                   WLAN_REASON_PREV_AUTH_NOT_VALID);
1993         }
1994 }
1995
1996
1997 static int ieee802_1x_rekey_broadcast(struct hostapd_data *hapd)
1998 {
1999         struct eapol_authenticator *eapol = hapd->eapol_auth;
2000
2001         if (hapd->conf->default_wep_key_len < 1)
2002                 return 0;
2003
2004         os_free(eapol->default_wep_key);
2005         eapol->default_wep_key = os_malloc(hapd->conf->default_wep_key_len);
2006         if (eapol->default_wep_key == NULL ||
2007             random_get_bytes(eapol->default_wep_key,
2008                              hapd->conf->default_wep_key_len)) {
2009                 wpa_printf(MSG_INFO, "Could not generate random WEP key");
2010                 os_free(eapol->default_wep_key);
2011                 eapol->default_wep_key = NULL;
2012                 return -1;
2013         }
2014
2015         wpa_hexdump_key(MSG_DEBUG, "IEEE 802.1X: New default WEP key",
2016                         eapol->default_wep_key,
2017                         hapd->conf->default_wep_key_len);
2018
2019         return 0;
2020 }
2021
2022
2023 static int ieee802_1x_sta_key_available(struct hostapd_data *hapd,
2024                                         struct sta_info *sta, void *ctx)
2025 {
2026         if (sta->eapol_sm) {
2027                 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
2028                 eapol_auth_step(sta->eapol_sm);
2029         }
2030         return 0;
2031 }
2032
2033
2034 static void ieee802_1x_rekey(void *eloop_ctx, void *timeout_ctx)
2035 {
2036         struct hostapd_data *hapd = eloop_ctx;
2037         struct eapol_authenticator *eapol = hapd->eapol_auth;
2038
2039         if (eapol->default_wep_key_idx >= 3)
2040                 eapol->default_wep_key_idx =
2041                         hapd->conf->individual_wep_key_len > 0 ? 1 : 0;
2042         else
2043                 eapol->default_wep_key_idx++;
2044
2045         wpa_printf(MSG_DEBUG, "IEEE 802.1X: New default WEP key index %d",
2046                    eapol->default_wep_key_idx);
2047
2048         if (ieee802_1x_rekey_broadcast(hapd)) {
2049                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
2050                                HOSTAPD_LEVEL_WARNING, "failed to generate a "
2051                                "new broadcast key");
2052                 os_free(eapol->default_wep_key);
2053                 eapol->default_wep_key = NULL;
2054                 return;
2055         }
2056
2057         /* TODO: Could setup key for RX here, but change default TX keyid only
2058          * after new broadcast key has been sent to all stations. */
2059         if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
2060                                 broadcast_ether_addr,
2061                                 eapol->default_wep_key_idx, 1, NULL, 0,
2062                                 eapol->default_wep_key,
2063                                 hapd->conf->default_wep_key_len)) {
2064                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
2065                                HOSTAPD_LEVEL_WARNING, "failed to configure a "
2066                                "new broadcast key");
2067                 os_free(eapol->default_wep_key);
2068                 eapol->default_wep_key = NULL;
2069                 return;
2070         }
2071
2072         ap_for_each_sta(hapd, ieee802_1x_sta_key_available, NULL);
2073
2074         if (hapd->conf->wep_rekeying_period > 0) {
2075                 eloop_register_timeout(hapd->conf->wep_rekeying_period, 0,
2076                                        ieee802_1x_rekey, hapd, NULL);
2077         }
2078 }
2079
2080
2081 static void ieee802_1x_eapol_send(void *ctx, void *sta_ctx, u8 type,
2082                                   const u8 *data, size_t datalen)
2083 {
2084 #ifdef CONFIG_WPS
2085         struct sta_info *sta = sta_ctx;
2086
2087         if ((sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) ==
2088             WLAN_STA_MAYBE_WPS) {
2089                 const u8 *identity;
2090                 size_t identity_len;
2091                 struct eapol_state_machine *sm = sta->eapol_sm;
2092
2093                 identity = eap_get_identity(sm->eap, &identity_len);
2094                 if (identity &&
2095                     ((identity_len == WSC_ID_ENROLLEE_LEN &&
2096                       os_memcmp(identity, WSC_ID_ENROLLEE,
2097                                 WSC_ID_ENROLLEE_LEN) == 0) ||
2098                      (identity_len == WSC_ID_REGISTRAR_LEN &&
2099                       os_memcmp(identity, WSC_ID_REGISTRAR,
2100                                 WSC_ID_REGISTRAR_LEN) == 0))) {
2101                         wpa_printf(MSG_DEBUG, "WPS: WLAN_STA_MAYBE_WPS -> "
2102                                    "WLAN_STA_WPS");
2103                         sta->flags |= WLAN_STA_WPS;
2104                 }
2105         }
2106 #endif /* CONFIG_WPS */
2107
2108         ieee802_1x_send(ctx, sta_ctx, type, data, datalen);
2109 }
2110
2111
2112 static void ieee802_1x_aaa_send(void *ctx, void *sta_ctx,
2113                                 const u8 *data, size_t datalen)
2114 {
2115 #ifndef CONFIG_NO_RADIUS
2116         struct hostapd_data *hapd = ctx;
2117         struct sta_info *sta = sta_ctx;
2118
2119         ieee802_1x_encapsulate_radius(hapd, sta, data, datalen);
2120 #endif /* CONFIG_NO_RADIUS */
2121 }
2122
2123
2124 static void _ieee802_1x_finished(void *ctx, void *sta_ctx, int success,
2125                                  int preauth, int remediation)
2126 {
2127         struct hostapd_data *hapd = ctx;
2128         struct sta_info *sta = sta_ctx;
2129         if (preauth)
2130                 rsn_preauth_finished(hapd, sta, success);
2131         else
2132                 ieee802_1x_finished(hapd, sta, success, remediation);
2133 }
2134
2135
2136 static int ieee802_1x_get_eap_user(void *ctx, const u8 *identity,
2137                                    size_t identity_len, int phase2,
2138                                    struct eap_user *user)
2139 {
2140         struct hostapd_data *hapd = ctx;
2141         const struct hostapd_eap_user *eap_user;
2142         int i;
2143         int rv = -1;
2144
2145         eap_user = hostapd_get_eap_user(hapd, identity, identity_len, phase2);
2146         if (eap_user == NULL)
2147                 goto out;
2148
2149         os_memset(user, 0, sizeof(*user));
2150         user->phase2 = phase2;
2151         for (i = 0; i < EAP_MAX_METHODS; i++) {
2152                 user->methods[i].vendor = eap_user->methods[i].vendor;
2153                 user->methods[i].method = eap_user->methods[i].method;
2154         }
2155
2156         if (eap_user->password) {
2157                 user->password = os_memdup(eap_user->password,
2158                                            eap_user->password_len);
2159                 if (user->password == NULL)
2160                         goto out;
2161                 user->password_len = eap_user->password_len;
2162                 user->password_hash = eap_user->password_hash;
2163                 if (eap_user->salt && eap_user->salt_len) {
2164                         user->salt = os_memdup(eap_user->salt,
2165                                                eap_user->salt_len);
2166                         if (!user->salt)
2167                                 goto out;
2168                         user->salt_len = eap_user->salt_len;
2169                 }
2170         }
2171         user->force_version = eap_user->force_version;
2172         user->macacl = eap_user->macacl;
2173         user->ttls_auth = eap_user->ttls_auth;
2174         user->remediation = eap_user->remediation;
2175         rv = 0;
2176
2177 out:
2178         if (rv)
2179                 wpa_printf(MSG_DEBUG, "%s: Failed to find user", __func__);
2180
2181         return rv;
2182 }
2183
2184
2185 static int ieee802_1x_sta_entry_alive(void *ctx, const u8 *addr)
2186 {
2187         struct hostapd_data *hapd = ctx;
2188         struct sta_info *sta;
2189         sta = ap_get_sta(hapd, addr);
2190         if (sta == NULL || sta->eapol_sm == NULL)
2191                 return 0;
2192         return 1;
2193 }
2194
2195
2196 static void ieee802_1x_logger(void *ctx, const u8 *addr,
2197                               eapol_logger_level level, const char *txt)
2198 {
2199 #ifndef CONFIG_NO_HOSTAPD_LOGGER
2200         struct hostapd_data *hapd = ctx;
2201         int hlevel;
2202
2203         switch (level) {
2204         case EAPOL_LOGGER_WARNING:
2205                 hlevel = HOSTAPD_LEVEL_WARNING;
2206                 break;
2207         case EAPOL_LOGGER_INFO:
2208                 hlevel = HOSTAPD_LEVEL_INFO;
2209                 break;
2210         case EAPOL_LOGGER_DEBUG:
2211         default:
2212                 hlevel = HOSTAPD_LEVEL_DEBUG;
2213                 break;
2214         }
2215
2216         hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE8021X, hlevel, "%s",
2217                        txt);
2218 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
2219 }
2220
2221
2222 static void ieee802_1x_set_port_authorized(void *ctx, void *sta_ctx,
2223                                            int authorized)
2224 {
2225         struct hostapd_data *hapd = ctx;
2226         struct sta_info *sta = sta_ctx;
2227         ieee802_1x_set_sta_authorized(hapd, sta, authorized);
2228 }
2229
2230
2231 static void _ieee802_1x_abort_auth(void *ctx, void *sta_ctx)
2232 {
2233         struct hostapd_data *hapd = ctx;
2234         struct sta_info *sta = sta_ctx;
2235         ieee802_1x_abort_auth(hapd, sta);
2236 }
2237
2238
2239 static void _ieee802_1x_tx_key(void *ctx, void *sta_ctx)
2240 {
2241 #ifndef CONFIG_FIPS
2242 #ifndef CONFIG_NO_RC4
2243         struct hostapd_data *hapd = ctx;
2244         struct sta_info *sta = sta_ctx;
2245         ieee802_1x_tx_key(hapd, sta);
2246 #endif /* CONFIG_NO_RC4 */
2247 #endif /* CONFIG_FIPS */
2248 }
2249
2250
2251 static void ieee802_1x_eapol_event(void *ctx, void *sta_ctx,
2252                                    enum eapol_event type)
2253 {
2254         /* struct hostapd_data *hapd = ctx; */
2255         struct sta_info *sta = sta_ctx;
2256         switch (type) {
2257         case EAPOL_AUTH_SM_CHANGE:
2258                 wpa_auth_sm_notify(sta->wpa_sm);
2259                 break;
2260         case EAPOL_AUTH_REAUTHENTICATE:
2261                 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
2262                 break;
2263         }
2264 }
2265
2266
2267 #ifdef CONFIG_ERP
2268
2269 static struct eap_server_erp_key *
2270 ieee802_1x_erp_get_key(void *ctx, const char *keyname)
2271 {
2272         struct hostapd_data *hapd = ctx;
2273         struct eap_server_erp_key *erp;
2274
2275         dl_list_for_each(erp, &hapd->erp_keys, struct eap_server_erp_key,
2276                          list) {
2277                 if (os_strcmp(erp->keyname_nai, keyname) == 0)
2278                         return erp;
2279         }
2280
2281         return NULL;
2282 }
2283
2284
2285 static int ieee802_1x_erp_add_key(void *ctx, struct eap_server_erp_key *erp)
2286 {
2287         struct hostapd_data *hapd = ctx;
2288
2289         dl_list_add(&hapd->erp_keys, &erp->list);
2290         return 0;
2291 }
2292
2293 #endif /* CONFIG_ERP */
2294
2295
2296 int ieee802_1x_init(struct hostapd_data *hapd)
2297 {
2298         int i;
2299         struct eapol_auth_config conf;
2300         struct eapol_auth_cb cb;
2301
2302         dl_list_init(&hapd->erp_keys);
2303
2304         os_memset(&conf, 0, sizeof(conf));
2305         conf.ctx = hapd;
2306         conf.eap_reauth_period = hapd->conf->eap_reauth_period;
2307         conf.wpa = hapd->conf->wpa;
2308         conf.individual_wep_key_len = hapd->conf->individual_wep_key_len;
2309         conf.eap_server = hapd->conf->eap_server;
2310         conf.ssl_ctx = hapd->ssl_ctx;
2311         conf.msg_ctx = hapd->msg_ctx;
2312         conf.eap_sim_db_priv = hapd->eap_sim_db_priv;
2313         conf.eap_req_id_text = hapd->conf->eap_req_id_text;
2314         conf.eap_req_id_text_len = hapd->conf->eap_req_id_text_len;
2315         conf.erp_send_reauth_start = hapd->conf->erp_send_reauth_start;
2316         conf.erp_domain = hapd->conf->erp_domain;
2317         conf.erp = hapd->conf->eap_server_erp;
2318         conf.tls_session_lifetime = hapd->conf->tls_session_lifetime;
2319         conf.tls_flags = hapd->conf->tls_flags;
2320         conf.pac_opaque_encr_key = hapd->conf->pac_opaque_encr_key;
2321         conf.eap_fast_a_id = hapd->conf->eap_fast_a_id;
2322         conf.eap_fast_a_id_len = hapd->conf->eap_fast_a_id_len;
2323         conf.eap_fast_a_id_info = hapd->conf->eap_fast_a_id_info;
2324         conf.eap_fast_prov = hapd->conf->eap_fast_prov;
2325         conf.pac_key_lifetime = hapd->conf->pac_key_lifetime;
2326         conf.pac_key_refresh_time = hapd->conf->pac_key_refresh_time;
2327         conf.eap_sim_aka_result_ind = hapd->conf->eap_sim_aka_result_ind;
2328         conf.tnc = hapd->conf->tnc;
2329         conf.wps = hapd->wps;
2330         conf.fragment_size = hapd->conf->fragment_size;
2331         conf.pwd_group = hapd->conf->pwd_group;
2332         conf.pbc_in_m1 = hapd->conf->pbc_in_m1;
2333         if (hapd->conf->server_id) {
2334                 conf.server_id = (const u8 *) hapd->conf->server_id;
2335                 conf.server_id_len = os_strlen(hapd->conf->server_id);
2336         } else {
2337                 conf.server_id = (const u8 *) "hostapd";
2338                 conf.server_id_len = 7;
2339         }
2340
2341         os_memset(&cb, 0, sizeof(cb));
2342         cb.eapol_send = ieee802_1x_eapol_send;
2343         cb.aaa_send = ieee802_1x_aaa_send;
2344         cb.finished = _ieee802_1x_finished;
2345         cb.get_eap_user = ieee802_1x_get_eap_user;
2346         cb.sta_entry_alive = ieee802_1x_sta_entry_alive;
2347         cb.logger = ieee802_1x_logger;
2348         cb.set_port_authorized = ieee802_1x_set_port_authorized;
2349         cb.abort_auth = _ieee802_1x_abort_auth;
2350         cb.tx_key = _ieee802_1x_tx_key;
2351         cb.eapol_event = ieee802_1x_eapol_event;
2352 #ifdef CONFIG_ERP
2353         cb.erp_get_key = ieee802_1x_erp_get_key;
2354         cb.erp_add_key = ieee802_1x_erp_add_key;
2355 #endif /* CONFIG_ERP */
2356
2357         hapd->eapol_auth = eapol_auth_init(&conf, &cb);
2358         if (hapd->eapol_auth == NULL)
2359                 return -1;
2360
2361         if ((hapd->conf->ieee802_1x || hapd->conf->wpa) &&
2362             hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1))
2363                 return -1;
2364
2365 #ifndef CONFIG_NO_RADIUS
2366         if (radius_client_register(hapd->radius, RADIUS_AUTH,
2367                                    ieee802_1x_receive_auth, hapd))
2368                 return -1;
2369 #endif /* CONFIG_NO_RADIUS */
2370
2371         if (hapd->conf->default_wep_key_len) {
2372                 for (i = 0; i < 4; i++)
2373                         hostapd_drv_set_key(hapd->conf->iface, hapd,
2374                                             WPA_ALG_NONE, NULL, i, 0, NULL, 0,
2375                                             NULL, 0);
2376
2377                 ieee802_1x_rekey(hapd, NULL);
2378
2379                 if (hapd->eapol_auth->default_wep_key == NULL)
2380                         return -1;
2381         }
2382
2383         return 0;
2384 }
2385
2386
2387 void ieee802_1x_erp_flush(struct hostapd_data *hapd)
2388 {
2389         struct eap_server_erp_key *erp;
2390
2391         while ((erp = dl_list_first(&hapd->erp_keys, struct eap_server_erp_key,
2392                                     list)) != NULL) {
2393                 dl_list_del(&erp->list);
2394                 bin_clear_free(erp, sizeof(*erp));
2395         }
2396 }
2397
2398
2399 void ieee802_1x_deinit(struct hostapd_data *hapd)
2400 {
2401         eloop_cancel_timeout(ieee802_1x_rekey, hapd, NULL);
2402
2403         if (hapd->driver && hapd->drv_priv &&
2404             (hapd->conf->ieee802_1x || hapd->conf->wpa))
2405                 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
2406
2407         eapol_auth_deinit(hapd->eapol_auth);
2408         hapd->eapol_auth = NULL;
2409
2410         ieee802_1x_erp_flush(hapd);
2411 }
2412
2413
2414 int ieee802_1x_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
2415                          const u8 *buf, size_t len, int ack)
2416 {
2417         struct ieee80211_hdr *hdr;
2418         u8 *pos;
2419         const unsigned char rfc1042_hdr[ETH_ALEN] =
2420                 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
2421
2422         if (sta == NULL)
2423                 return -1;
2424         if (len < sizeof(*hdr) + sizeof(rfc1042_hdr) + 2)
2425                 return 0;
2426
2427         hdr = (struct ieee80211_hdr *) buf;
2428         pos = (u8 *) (hdr + 1);
2429         if (os_memcmp(pos, rfc1042_hdr, sizeof(rfc1042_hdr)) != 0)
2430                 return 0;
2431         pos += sizeof(rfc1042_hdr);
2432         if (WPA_GET_BE16(pos) != ETH_P_PAE)
2433                 return 0;
2434         pos += 2;
2435
2436         return ieee802_1x_eapol_tx_status(hapd, sta, pos, buf + len - pos,
2437                                           ack);
2438 }
2439
2440
2441 int ieee802_1x_eapol_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
2442                                const u8 *buf, int len, int ack)
2443 {
2444         const struct ieee802_1x_hdr *xhdr =
2445                 (const struct ieee802_1x_hdr *) buf;
2446         const u8 *pos = buf + sizeof(*xhdr);
2447         struct ieee802_1x_eapol_key *key;
2448
2449         if (len < (int) sizeof(*xhdr))
2450                 return 0;
2451         wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR " TX status - version=%d "
2452                    "type=%d length=%d - ack=%d",
2453                    MAC2STR(sta->addr), xhdr->version, xhdr->type,
2454                    be_to_host16(xhdr->length), ack);
2455
2456 #ifdef CONFIG_WPS
2457         if (xhdr->type == IEEE802_1X_TYPE_EAP_PACKET && ack &&
2458             (sta->flags & WLAN_STA_WPS) &&
2459             ap_sta_pending_delayed_1x_auth_fail_disconnect(hapd, sta)) {
2460                 wpa_printf(MSG_DEBUG,
2461                            "WPS: Indicate EAP completion on ACK for EAP-Failure");
2462                 hostapd_wps_eap_completed(hapd);
2463         }
2464 #endif /* CONFIG_WPS */
2465
2466         if (xhdr->type != IEEE802_1X_TYPE_EAPOL_KEY)
2467                 return 0;
2468
2469         if (pos + sizeof(struct wpa_eapol_key) <= buf + len) {
2470                 const struct wpa_eapol_key *wpa;
2471                 wpa = (const struct wpa_eapol_key *) pos;
2472                 if (wpa->type == EAPOL_KEY_TYPE_RSN ||
2473                     wpa->type == EAPOL_KEY_TYPE_WPA)
2474                         wpa_auth_eapol_key_tx_status(hapd->wpa_auth,
2475                                                      sta->wpa_sm, ack);
2476         }
2477
2478         /* EAPOL EAP-Packet packets are eventually re-sent by either Supplicant
2479          * or Authenticator state machines, but EAPOL-Key packets are not
2480          * retransmitted in case of failure. Try to re-send failed EAPOL-Key
2481          * packets couple of times because otherwise STA keys become
2482          * unsynchronized with AP. */
2483         if (!ack && pos + sizeof(*key) <= buf + len) {
2484                 key = (struct ieee802_1x_eapol_key *) pos;
2485                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
2486                                HOSTAPD_LEVEL_DEBUG, "did not Ack EAPOL-Key "
2487                                "frame (%scast index=%d)",
2488                                key->key_index & BIT(7) ? "uni" : "broad",
2489                                key->key_index & ~BIT(7));
2490                 /* TODO: re-send EAPOL-Key couple of times (with short delay
2491                  * between them?). If all attempt fail, report error and
2492                  * deauthenticate STA so that it will get new keys when
2493                  * authenticating again (e.g., after returning in range).
2494                  * Separate limit/transmit state needed both for unicast and
2495                  * broadcast keys(?) */
2496         }
2497         /* TODO: could move unicast key configuration from ieee802_1x_tx_key()
2498          * to here and change the key only if the EAPOL-Key packet was Acked.
2499          */
2500
2501         return 1;
2502 }
2503
2504
2505 u8 * ieee802_1x_get_identity(struct eapol_state_machine *sm, size_t *len)
2506 {
2507         if (sm == NULL || sm->identity == NULL)
2508                 return NULL;
2509
2510         *len = sm->identity_len;
2511         return sm->identity;
2512 }
2513
2514
2515 u8 * ieee802_1x_get_radius_class(struct eapol_state_machine *sm, size_t *len,
2516                                  int idx)
2517 {
2518         if (sm == NULL || sm->radius_class.attr == NULL ||
2519             idx >= (int) sm->radius_class.count)
2520                 return NULL;
2521
2522         *len = sm->radius_class.attr[idx].len;
2523         return sm->radius_class.attr[idx].data;
2524 }
2525
2526
2527 struct wpabuf * ieee802_1x_get_radius_cui(struct eapol_state_machine *sm)
2528 {
2529         if (sm == NULL)
2530                 return NULL;
2531         return sm->radius_cui;
2532 }
2533
2534
2535 const u8 * ieee802_1x_get_key(struct eapol_state_machine *sm, size_t *len)
2536 {
2537         *len = 0;
2538         if (sm == NULL)
2539                 return NULL;
2540
2541         *len = sm->eap_if->eapKeyDataLen;
2542         return sm->eap_if->eapKeyData;
2543 }
2544
2545
2546 void ieee802_1x_notify_port_enabled(struct eapol_state_machine *sm,
2547                                     int enabled)
2548 {
2549         if (sm == NULL)
2550                 return;
2551         sm->eap_if->portEnabled = enabled ? TRUE : FALSE;
2552         eapol_auth_step(sm);
2553 }
2554
2555
2556 void ieee802_1x_notify_port_valid(struct eapol_state_machine *sm,
2557                                   int valid)
2558 {
2559         if (sm == NULL)
2560                 return;
2561         sm->portValid = valid ? TRUE : FALSE;
2562         eapol_auth_step(sm);
2563 }
2564
2565
2566 void ieee802_1x_notify_pre_auth(struct eapol_state_machine *sm, int pre_auth)
2567 {
2568         if (sm == NULL)
2569                 return;
2570         if (pre_auth)
2571                 sm->flags |= EAPOL_SM_PREAUTH;
2572         else
2573                 sm->flags &= ~EAPOL_SM_PREAUTH;
2574 }
2575
2576
2577 static const char * bool_txt(Boolean val)
2578 {
2579         return val ? "TRUE" : "FALSE";
2580 }
2581
2582
2583 int ieee802_1x_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
2584 {
2585         /* TODO */
2586         return 0;
2587 }
2588
2589
2590 int ieee802_1x_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
2591                            char *buf, size_t buflen)
2592 {
2593         int len = 0, ret;
2594         struct eapol_state_machine *sm = sta->eapol_sm;
2595         struct os_reltime diff;
2596         const char *name1;
2597         const char *name2;
2598         char *identity_buf = NULL;
2599
2600         if (sm == NULL)
2601                 return 0;
2602
2603         ret = os_snprintf(buf + len, buflen - len,
2604                           "dot1xPaePortNumber=%d\n"
2605                           "dot1xPaePortProtocolVersion=%d\n"
2606                           "dot1xPaePortCapabilities=1\n"
2607                           "dot1xPaePortInitialize=%d\n"
2608                           "dot1xPaePortReauthenticate=FALSE\n",
2609                           sta->aid,
2610                           EAPOL_VERSION,
2611                           sm->initialize);
2612         if (os_snprintf_error(buflen - len, ret))
2613                 return len;
2614         len += ret;
2615
2616         /* dot1xAuthConfigTable */
2617         ret = os_snprintf(buf + len, buflen - len,
2618                           "dot1xAuthPaeState=%d\n"
2619                           "dot1xAuthBackendAuthState=%d\n"
2620                           "dot1xAuthAdminControlledDirections=%d\n"
2621                           "dot1xAuthOperControlledDirections=%d\n"
2622                           "dot1xAuthAuthControlledPortStatus=%d\n"
2623                           "dot1xAuthAuthControlledPortControl=%d\n"
2624                           "dot1xAuthQuietPeriod=%u\n"
2625                           "dot1xAuthServerTimeout=%u\n"
2626                           "dot1xAuthReAuthPeriod=%u\n"
2627                           "dot1xAuthReAuthEnabled=%s\n"
2628                           "dot1xAuthKeyTxEnabled=%s\n",
2629                           sm->auth_pae_state + 1,
2630                           sm->be_auth_state + 1,
2631                           sm->adminControlledDirections,
2632                           sm->operControlledDirections,
2633                           sm->authPortStatus,
2634                           sm->portControl,
2635                           sm->quietPeriod,
2636                           sm->serverTimeout,
2637                           sm->reAuthPeriod,
2638                           bool_txt(sm->reAuthEnabled),
2639                           bool_txt(sm->keyTxEnabled));
2640         if (os_snprintf_error(buflen - len, ret))
2641                 return len;
2642         len += ret;
2643
2644         /* dot1xAuthStatsTable */
2645         ret = os_snprintf(buf + len, buflen - len,
2646                           "dot1xAuthEapolFramesRx=%u\n"
2647                           "dot1xAuthEapolFramesTx=%u\n"
2648                           "dot1xAuthEapolStartFramesRx=%u\n"
2649                           "dot1xAuthEapolLogoffFramesRx=%u\n"
2650                           "dot1xAuthEapolRespIdFramesRx=%u\n"
2651                           "dot1xAuthEapolRespFramesRx=%u\n"
2652                           "dot1xAuthEapolReqIdFramesTx=%u\n"
2653                           "dot1xAuthEapolReqFramesTx=%u\n"
2654                           "dot1xAuthInvalidEapolFramesRx=%u\n"
2655                           "dot1xAuthEapLengthErrorFramesRx=%u\n"
2656                           "dot1xAuthLastEapolFrameVersion=%u\n"
2657                           "dot1xAuthLastEapolFrameSource=" MACSTR "\n",
2658                           sm->dot1xAuthEapolFramesRx,
2659                           sm->dot1xAuthEapolFramesTx,
2660                           sm->dot1xAuthEapolStartFramesRx,
2661                           sm->dot1xAuthEapolLogoffFramesRx,
2662                           sm->dot1xAuthEapolRespIdFramesRx,
2663                           sm->dot1xAuthEapolRespFramesRx,
2664                           sm->dot1xAuthEapolReqIdFramesTx,
2665                           sm->dot1xAuthEapolReqFramesTx,
2666                           sm->dot1xAuthInvalidEapolFramesRx,
2667                           sm->dot1xAuthEapLengthErrorFramesRx,
2668                           sm->dot1xAuthLastEapolFrameVersion,
2669                           MAC2STR(sm->addr));
2670         if (os_snprintf_error(buflen - len, ret))
2671                 return len;
2672         len += ret;
2673
2674         /* dot1xAuthDiagTable */
2675         ret = os_snprintf(buf + len, buflen - len,
2676                           "dot1xAuthEntersConnecting=%u\n"
2677                           "dot1xAuthEapLogoffsWhileConnecting=%u\n"
2678                           "dot1xAuthEntersAuthenticating=%u\n"
2679                           "dot1xAuthAuthSuccessesWhileAuthenticating=%u\n"
2680                           "dot1xAuthAuthTimeoutsWhileAuthenticating=%u\n"
2681                           "dot1xAuthAuthFailWhileAuthenticating=%u\n"
2682                           "dot1xAuthAuthEapStartsWhileAuthenticating=%u\n"
2683                           "dot1xAuthAuthEapLogoffWhileAuthenticating=%u\n"
2684                           "dot1xAuthAuthReauthsWhileAuthenticated=%u\n"
2685                           "dot1xAuthAuthEapStartsWhileAuthenticated=%u\n"
2686                           "dot1xAuthAuthEapLogoffWhileAuthenticated=%u\n"
2687                           "dot1xAuthBackendResponses=%u\n"
2688                           "dot1xAuthBackendAccessChallenges=%u\n"
2689                           "dot1xAuthBackendOtherRequestsToSupplicant=%u\n"
2690                           "dot1xAuthBackendAuthSuccesses=%u\n"
2691                           "dot1xAuthBackendAuthFails=%u\n",
2692                           sm->authEntersConnecting,
2693                           sm->authEapLogoffsWhileConnecting,
2694                           sm->authEntersAuthenticating,
2695                           sm->authAuthSuccessesWhileAuthenticating,
2696                           sm->authAuthTimeoutsWhileAuthenticating,
2697                           sm->authAuthFailWhileAuthenticating,
2698                           sm->authAuthEapStartsWhileAuthenticating,
2699                           sm->authAuthEapLogoffWhileAuthenticating,
2700                           sm->authAuthReauthsWhileAuthenticated,
2701                           sm->authAuthEapStartsWhileAuthenticated,
2702                           sm->authAuthEapLogoffWhileAuthenticated,
2703                           sm->backendResponses,
2704                           sm->backendAccessChallenges,
2705                           sm->backendOtherRequestsToSupplicant,
2706                           sm->backendAuthSuccesses,
2707                           sm->backendAuthFails);
2708         if (os_snprintf_error(buflen - len, ret))
2709                 return len;
2710         len += ret;
2711
2712         /* dot1xAuthSessionStatsTable */
2713         os_reltime_age(&sta->acct_session_start, &diff);
2714         if (sm->eap && !sm->identity) {
2715                 const u8 *id;
2716                 size_t id_len;
2717
2718                 id = eap_get_identity(sm->eap, &id_len);
2719                 if (id)
2720                         identity_buf = dup_binstr(id, id_len);
2721         }
2722         ret = os_snprintf(buf + len, buflen - len,
2723                           /* TODO: dot1xAuthSessionOctetsRx */
2724                           /* TODO: dot1xAuthSessionOctetsTx */
2725                           /* TODO: dot1xAuthSessionFramesRx */
2726                           /* TODO: dot1xAuthSessionFramesTx */
2727                           "dot1xAuthSessionId=%016llX\n"
2728                           "dot1xAuthSessionAuthenticMethod=%d\n"
2729                           "dot1xAuthSessionTime=%u\n"
2730                           "dot1xAuthSessionTerminateCause=999\n"
2731                           "dot1xAuthSessionUserName=%s\n",
2732                           (unsigned long long) sta->acct_session_id,
2733                           (wpa_key_mgmt_wpa_ieee8021x(
2734                                    wpa_auth_sta_key_mgmt(sta->wpa_sm))) ?
2735                           1 : 2,
2736                           (unsigned int) diff.sec,
2737                           sm->identity ? (char *) sm->identity :
2738                                          (identity_buf ? identity_buf : "N/A"));
2739         os_free(identity_buf);
2740         if (os_snprintf_error(buflen - len, ret))
2741                 return len;
2742         len += ret;
2743
2744         if (sm->acct_multi_session_id) {
2745                 ret = os_snprintf(buf + len, buflen - len,
2746                                   "authMultiSessionId=%016llX\n",
2747                                   (unsigned long long)
2748                                   sm->acct_multi_session_id);
2749                 if (os_snprintf_error(buflen - len, ret))
2750                         return len;
2751                 len += ret;
2752         }
2753
2754         name1 = eap_server_get_name(0, sm->eap_type_authsrv);
2755         name2 = eap_server_get_name(0, sm->eap_type_supp);
2756         ret = os_snprintf(buf + len, buflen - len,
2757                           "last_eap_type_as=%d (%s)\n"
2758                           "last_eap_type_sta=%d (%s)\n",
2759                           sm->eap_type_authsrv, name1,
2760                           sm->eap_type_supp, name2);
2761         if (os_snprintf_error(buflen - len, ret))
2762                 return len;
2763         len += ret;
2764
2765         return len;
2766 }
2767
2768
2769 #ifdef CONFIG_HS20
2770 static void ieee802_1x_wnm_notif_send(void *eloop_ctx, void *timeout_ctx)
2771 {
2772         struct hostapd_data *hapd = eloop_ctx;
2773         struct sta_info *sta = timeout_ctx;
2774
2775         if (sta->remediation) {
2776                 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
2777                            MACSTR " to indicate Subscription Remediation",
2778                            MAC2STR(sta->addr));
2779                 hs20_send_wnm_notification(hapd, sta->addr,
2780                                            sta->remediation_method,
2781                                            sta->remediation_url);
2782                 os_free(sta->remediation_url);
2783                 sta->remediation_url = NULL;
2784         }
2785
2786         if (sta->hs20_deauth_req) {
2787                 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
2788                            MACSTR " to indicate imminent deauthentication",
2789                            MAC2STR(sta->addr));
2790                 hs20_send_wnm_notification_deauth_req(hapd, sta->addr,
2791                                                       sta->hs20_deauth_req);
2792         }
2793
2794         if (sta->hs20_t_c_filtering) {
2795                 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
2796                            MACSTR " to indicate Terms and Conditions filtering",
2797                            MAC2STR(sta->addr));
2798                 hs20_send_wnm_notification_t_c(hapd, sta->addr, sta->t_c_url);
2799                 os_free(sta->t_c_url);
2800                 sta->t_c_url = NULL;
2801         }
2802 }
2803 #endif /* CONFIG_HS20 */
2804
2805
2806 static void ieee802_1x_finished(struct hostapd_data *hapd,
2807                                 struct sta_info *sta, int success,
2808                                 int remediation)
2809 {
2810         const u8 *key;
2811         size_t len;
2812         /* TODO: get PMKLifetime from WPA parameters */
2813         static const int dot11RSNAConfigPMKLifetime = 43200;
2814         unsigned int session_timeout;
2815         struct os_reltime now, remaining;
2816
2817 #ifdef CONFIG_HS20
2818         if (remediation && !sta->remediation) {
2819                 sta->remediation = 1;
2820                 os_free(sta->remediation_url);
2821                 sta->remediation_url =
2822                         os_strdup(hapd->conf->subscr_remediation_url);
2823                 sta->remediation_method = 1; /* SOAP-XML SPP */
2824         }
2825
2826         if (success && (sta->remediation || sta->hs20_deauth_req ||
2827                         sta->hs20_t_c_filtering)) {
2828                 wpa_printf(MSG_DEBUG, "HS 2.0: Schedule WNM-Notification to "
2829                            MACSTR " in 100 ms", MAC2STR(sta->addr));
2830                 eloop_cancel_timeout(ieee802_1x_wnm_notif_send, hapd, sta);
2831                 eloop_register_timeout(0, 100000, ieee802_1x_wnm_notif_send,
2832                                        hapd, sta);
2833         }
2834 #endif /* CONFIG_HS20 */
2835
2836         key = ieee802_1x_get_key(sta->eapol_sm, &len);
2837         if (sta->session_timeout_set) {
2838                 os_get_reltime(&now);
2839                 os_reltime_sub(&sta->session_timeout, &now, &remaining);
2840                 session_timeout = (remaining.sec > 0) ? remaining.sec : 1;
2841         } else {
2842                 session_timeout = dot11RSNAConfigPMKLifetime;
2843         }
2844         if (success && key && len >= PMK_LEN && !sta->remediation &&
2845             !sta->hs20_deauth_requested &&
2846             wpa_auth_pmksa_add(sta->wpa_sm, key, len, session_timeout,
2847                                sta->eapol_sm) == 0) {
2848                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
2849                                HOSTAPD_LEVEL_DEBUG,
2850                                "Added PMKSA cache entry (IEEE 802.1X)");
2851         }
2852
2853         if (!success) {
2854                 /*
2855                  * Many devices require deauthentication after WPS provisioning
2856                  * and some may not be be able to do that themselves, so
2857                  * disconnect the client here. In addition, this may also
2858                  * benefit IEEE 802.1X/EAPOL authentication cases, too since
2859                  * the EAPOL PAE state machine would remain in HELD state for
2860                  * considerable amount of time and some EAP methods, like
2861                  * EAP-FAST with anonymous provisioning, may require another
2862                  * EAPOL authentication to be started to complete connection.
2863                  */
2864                 ap_sta_delayed_1x_auth_fail_disconnect(hapd, sta);
2865         }
2866 }