ieee802_1x.c revision 281806
1/* 2 * hostapd / IEEE 802.1X-2004 Authenticator 3 * Copyright (c) 2002-2012, Jouni Malinen <j@w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9#include "utils/includes.h" 10 11#include "utils/common.h" 12#include "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#include "ieee802_1x.h" 35 36 37static void ieee802_1x_finished(struct hostapd_data *hapd, 38 struct sta_info *sta, int success, 39 int remediation); 40 41 42static void ieee802_1x_send(struct hostapd_data *hapd, struct sta_info *sta, 43 u8 type, const u8 *data, size_t datalen) 44{ 45 u8 *buf; 46 struct ieee802_1x_hdr *xhdr; 47 size_t len; 48 int encrypt = 0; 49 50 len = sizeof(*xhdr) + datalen; 51 buf = os_zalloc(len); 52 if (buf == NULL) { 53 wpa_printf(MSG_ERROR, "malloc() failed for " 54 "ieee802_1x_send(len=%lu)", 55 (unsigned long) len); 56 return; 57 } 58 59 xhdr = (struct ieee802_1x_hdr *) buf; 60 xhdr->version = hapd->conf->eapol_version; 61 xhdr->type = type; 62 xhdr->length = host_to_be16(datalen); 63 64 if (datalen > 0 && data != NULL) 65 os_memcpy(xhdr + 1, data, datalen); 66 67 if (wpa_auth_pairwise_set(sta->wpa_sm)) 68 encrypt = 1; 69#ifdef CONFIG_TESTING_OPTIONS 70 if (hapd->ext_eapol_frame_io) { 71 size_t hex_len = 2 * len + 1; 72 char *hex = os_malloc(hex_len); 73 74 if (hex) { 75 wpa_snprintf_hex(hex, hex_len, buf, len); 76 wpa_msg(hapd->msg_ctx, MSG_INFO, 77 "EAPOL-TX " MACSTR " %s", 78 MAC2STR(sta->addr), hex); 79 os_free(hex); 80 } 81 } else 82#endif /* CONFIG_TESTING_OPTIONS */ 83 if (sta->flags & WLAN_STA_PREAUTH) { 84 rsn_preauth_send(hapd, sta, buf, len); 85 } else { 86 hostapd_drv_hapd_send_eapol( 87 hapd, sta->addr, buf, len, 88 encrypt, hostapd_sta_flags_to_drv(sta->flags)); 89 } 90 91 os_free(buf); 92} 93 94 95void ieee802_1x_set_sta_authorized(struct hostapd_data *hapd, 96 struct sta_info *sta, int authorized) 97{ 98 int res; 99 100 if (sta->flags & WLAN_STA_PREAUTH) 101 return; 102 103 if (authorized) { 104 ap_sta_set_authorized(hapd, sta, 1); 105 res = hostapd_set_authorized(hapd, sta, 1); 106 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 107 HOSTAPD_LEVEL_DEBUG, "authorizing port"); 108 } else { 109 ap_sta_set_authorized(hapd, sta, 0); 110 res = hostapd_set_authorized(hapd, sta, 0); 111 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 112 HOSTAPD_LEVEL_DEBUG, "unauthorizing port"); 113 } 114 115 if (res && errno != ENOENT) { 116 wpa_printf(MSG_DEBUG, "Could not set station " MACSTR 117 " flags for kernel driver (errno=%d).", 118 MAC2STR(sta->addr), errno); 119 } 120 121 if (authorized) { 122 os_get_reltime(&sta->connected_time); 123 accounting_sta_start(hapd, sta); 124 } 125} 126 127 128static void ieee802_1x_tx_key_one(struct hostapd_data *hapd, 129 struct sta_info *sta, 130 int idx, int broadcast, 131 u8 *key_data, size_t key_len) 132{ 133 u8 *buf, *ekey; 134 struct ieee802_1x_hdr *hdr; 135 struct ieee802_1x_eapol_key *key; 136 size_t len, ekey_len; 137 struct eapol_state_machine *sm = sta->eapol_sm; 138 139 if (sm == NULL) 140 return; 141 142 len = sizeof(*key) + key_len; 143 buf = os_zalloc(sizeof(*hdr) + len); 144 if (buf == NULL) 145 return; 146 147 hdr = (struct ieee802_1x_hdr *) buf; 148 key = (struct ieee802_1x_eapol_key *) (hdr + 1); 149 key->type = EAPOL_KEY_TYPE_RC4; 150 WPA_PUT_BE16(key->key_length, key_len); 151 wpa_get_ntp_timestamp(key->replay_counter); 152 153 if (random_get_bytes(key->key_iv, sizeof(key->key_iv))) { 154 wpa_printf(MSG_ERROR, "Could not get random numbers"); 155 os_free(buf); 156 return; 157 } 158 159 key->key_index = idx | (broadcast ? 0 : BIT(7)); 160 if (hapd->conf->eapol_key_index_workaround) { 161 /* According to some information, WinXP Supplicant seems to 162 * interpret bit7 as an indication whether the key is to be 163 * activated, so make it possible to enable workaround that 164 * sets this bit for all keys. */ 165 key->key_index |= BIT(7); 166 } 167 168 /* Key is encrypted using "Key-IV + MSK[0..31]" as the RC4-key and 169 * MSK[32..63] is used to sign the message. */ 170 if (sm->eap_if->eapKeyData == NULL || sm->eap_if->eapKeyDataLen < 64) { 171 wpa_printf(MSG_ERROR, "No eapKeyData available for encrypting " 172 "and signing EAPOL-Key"); 173 os_free(buf); 174 return; 175 } 176 os_memcpy((u8 *) (key + 1), key_data, key_len); 177 ekey_len = sizeof(key->key_iv) + 32; 178 ekey = os_malloc(ekey_len); 179 if (ekey == NULL) { 180 wpa_printf(MSG_ERROR, "Could not encrypt key"); 181 os_free(buf); 182 return; 183 } 184 os_memcpy(ekey, key->key_iv, sizeof(key->key_iv)); 185 os_memcpy(ekey + sizeof(key->key_iv), sm->eap_if->eapKeyData, 32); 186 rc4_skip(ekey, ekey_len, 0, (u8 *) (key + 1), key_len); 187 os_free(ekey); 188 189 /* This header is needed here for HMAC-MD5, but it will be regenerated 190 * in ieee802_1x_send() */ 191 hdr->version = hapd->conf->eapol_version; 192 hdr->type = IEEE802_1X_TYPE_EAPOL_KEY; 193 hdr->length = host_to_be16(len); 194 hmac_md5(sm->eap_if->eapKeyData + 32, 32, buf, sizeof(*hdr) + len, 195 key->key_signature); 196 197 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key to " MACSTR 198 " (%s index=%d)", MAC2STR(sm->addr), 199 broadcast ? "broadcast" : "unicast", idx); 200 ieee802_1x_send(hapd, sta, IEEE802_1X_TYPE_EAPOL_KEY, (u8 *) key, len); 201 if (sta->eapol_sm) 202 sta->eapol_sm->dot1xAuthEapolFramesTx++; 203 os_free(buf); 204} 205 206 207void ieee802_1x_tx_key(struct hostapd_data *hapd, struct sta_info *sta) 208{ 209 struct eapol_authenticator *eapol = hapd->eapol_auth; 210 struct eapol_state_machine *sm = sta->eapol_sm; 211 212 if (sm == NULL || !sm->eap_if->eapKeyData) 213 return; 214 215 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key(s) to " MACSTR, 216 MAC2STR(sta->addr)); 217 218#ifndef CONFIG_NO_VLAN 219 if (sta->vlan_id > 0 && sta->vlan_id <= MAX_VLAN_ID) { 220 wpa_printf(MSG_ERROR, "Using WEP with vlans is not supported."); 221 return; 222 } 223#endif /* CONFIG_NO_VLAN */ 224 225 if (eapol->default_wep_key) { 226 ieee802_1x_tx_key_one(hapd, sta, eapol->default_wep_key_idx, 1, 227 eapol->default_wep_key, 228 hapd->conf->default_wep_key_len); 229 } 230 231 if (hapd->conf->individual_wep_key_len > 0) { 232 u8 *ikey; 233 ikey = os_malloc(hapd->conf->individual_wep_key_len); 234 if (ikey == NULL || 235 random_get_bytes(ikey, hapd->conf->individual_wep_key_len)) 236 { 237 wpa_printf(MSG_ERROR, "Could not generate random " 238 "individual WEP key."); 239 os_free(ikey); 240 return; 241 } 242 243 wpa_hexdump_key(MSG_DEBUG, "Individual WEP key", 244 ikey, hapd->conf->individual_wep_key_len); 245 246 ieee802_1x_tx_key_one(hapd, sta, 0, 0, ikey, 247 hapd->conf->individual_wep_key_len); 248 249 /* TODO: set encryption in TX callback, i.e., only after STA 250 * has ACKed EAPOL-Key frame */ 251 if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP, 252 sta->addr, 0, 1, NULL, 0, ikey, 253 hapd->conf->individual_wep_key_len)) { 254 wpa_printf(MSG_ERROR, "Could not set individual WEP " 255 "encryption."); 256 } 257 258 os_free(ikey); 259 } 260} 261 262 263const char *radius_mode_txt(struct hostapd_data *hapd) 264{ 265 switch (hapd->iface->conf->hw_mode) { 266 case HOSTAPD_MODE_IEEE80211AD: 267 return "802.11ad"; 268 case HOSTAPD_MODE_IEEE80211A: 269 return "802.11a"; 270 case HOSTAPD_MODE_IEEE80211G: 271 return "802.11g"; 272 case HOSTAPD_MODE_IEEE80211B: 273 default: 274 return "802.11b"; 275 } 276} 277 278 279int radius_sta_rate(struct hostapd_data *hapd, struct sta_info *sta) 280{ 281 int i; 282 u8 rate = 0; 283 284 for (i = 0; i < sta->supported_rates_len; i++) 285 if ((sta->supported_rates[i] & 0x7f) > rate) 286 rate = sta->supported_rates[i] & 0x7f; 287 288 return rate; 289} 290 291 292#ifndef CONFIG_NO_RADIUS 293static void ieee802_1x_learn_identity(struct hostapd_data *hapd, 294 struct eapol_state_machine *sm, 295 const u8 *eap, size_t len) 296{ 297 const u8 *identity; 298 size_t identity_len; 299 const struct eap_hdr *hdr = (const struct eap_hdr *) eap; 300 301 if (len <= sizeof(struct eap_hdr) || 302 (hdr->code == EAP_CODE_RESPONSE && 303 eap[sizeof(struct eap_hdr)] != EAP_TYPE_IDENTITY) || 304 (hdr->code == EAP_CODE_INITIATE && 305 eap[sizeof(struct eap_hdr)] != EAP_ERP_TYPE_REAUTH) || 306 (hdr->code != EAP_CODE_RESPONSE && 307 hdr->code != EAP_CODE_INITIATE)) 308 return; 309 310 identity = eap_get_identity(sm->eap, &identity_len); 311 if (identity == NULL) 312 return; 313 314 /* Save station identity for future RADIUS packets */ 315 os_free(sm->identity); 316 sm->identity = (u8 *) dup_binstr(identity, identity_len); 317 if (sm->identity == NULL) { 318 sm->identity_len = 0; 319 return; 320 } 321 322 sm->identity_len = identity_len; 323 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X, 324 HOSTAPD_LEVEL_DEBUG, "STA identity '%s'", sm->identity); 325 sm->dot1xAuthEapolRespIdFramesRx++; 326} 327 328 329static int add_common_radius_sta_attr_rsn(struct hostapd_data *hapd, 330 struct hostapd_radius_attr *req_attr, 331 struct sta_info *sta, 332 struct radius_msg *msg) 333{ 334 u32 suite; 335 int ver, val; 336 337 ver = wpa_auth_sta_wpa_version(sta->wpa_sm); 338 val = wpa_auth_get_pairwise(sta->wpa_sm); 339 suite = wpa_cipher_to_suite(ver, val); 340 if (val != -1 && 341 !hostapd_config_get_radius_attr(req_attr, 342 RADIUS_ATTR_WLAN_PAIRWISE_CIPHER) && 343 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_PAIRWISE_CIPHER, 344 suite)) { 345 wpa_printf(MSG_ERROR, "Could not add WLAN-Pairwise-Cipher"); 346 return -1; 347 } 348 349 suite = wpa_cipher_to_suite((hapd->conf->wpa & 0x2) ? 350 WPA_PROTO_RSN : WPA_PROTO_WPA, 351 hapd->conf->wpa_group); 352 if (!hostapd_config_get_radius_attr(req_attr, 353 RADIUS_ATTR_WLAN_GROUP_CIPHER) && 354 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_GROUP_CIPHER, 355 suite)) { 356 wpa_printf(MSG_ERROR, "Could not add WLAN-Group-Cipher"); 357 return -1; 358 } 359 360 val = wpa_auth_sta_key_mgmt(sta->wpa_sm); 361 suite = wpa_akm_to_suite(val); 362 if (val != -1 && 363 !hostapd_config_get_radius_attr(req_attr, 364 RADIUS_ATTR_WLAN_AKM_SUITE) && 365 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_AKM_SUITE, 366 suite)) { 367 wpa_printf(MSG_ERROR, "Could not add WLAN-AKM-Suite"); 368 return -1; 369 } 370 371#ifdef CONFIG_IEEE80211W 372 if (hapd->conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) { 373 suite = wpa_cipher_to_suite(WPA_PROTO_RSN, 374 hapd->conf->group_mgmt_cipher); 375 if (!hostapd_config_get_radius_attr( 376 req_attr, RADIUS_ATTR_WLAN_GROUP_MGMT_CIPHER) && 377 !radius_msg_add_attr_int32( 378 msg, RADIUS_ATTR_WLAN_GROUP_MGMT_CIPHER, suite)) { 379 wpa_printf(MSG_ERROR, 380 "Could not add WLAN-Group-Mgmt-Cipher"); 381 return -1; 382 } 383 } 384#endif /* CONFIG_IEEE80211W */ 385 386 return 0; 387} 388 389 390static int add_common_radius_sta_attr(struct hostapd_data *hapd, 391 struct hostapd_radius_attr *req_attr, 392 struct sta_info *sta, 393 struct radius_msg *msg) 394{ 395 char buf[128]; 396 397 if (!hostapd_config_get_radius_attr(req_attr, 398 RADIUS_ATTR_NAS_PORT) && 399 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT, sta->aid)) { 400 wpa_printf(MSG_ERROR, "Could not add NAS-Port"); 401 return -1; 402 } 403 404 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT, 405 MAC2STR(sta->addr)); 406 buf[sizeof(buf) - 1] = '\0'; 407 if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID, 408 (u8 *) buf, os_strlen(buf))) { 409 wpa_printf(MSG_ERROR, "Could not add Calling-Station-Id"); 410 return -1; 411 } 412 413 if (sta->flags & WLAN_STA_PREAUTH) { 414 os_strlcpy(buf, "IEEE 802.11i Pre-Authentication", 415 sizeof(buf)); 416 } else { 417 os_snprintf(buf, sizeof(buf), "CONNECT %d%sMbps %s", 418 radius_sta_rate(hapd, sta) / 2, 419 (radius_sta_rate(hapd, sta) & 1) ? ".5" : "", 420 radius_mode_txt(hapd)); 421 buf[sizeof(buf) - 1] = '\0'; 422 } 423 if (!hostapd_config_get_radius_attr(req_attr, 424 RADIUS_ATTR_CONNECT_INFO) && 425 !radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO, 426 (u8 *) buf, os_strlen(buf))) { 427 wpa_printf(MSG_ERROR, "Could not add Connect-Info"); 428 return -1; 429 } 430 431 if (sta->acct_session_id_hi || sta->acct_session_id_lo) { 432 os_snprintf(buf, sizeof(buf), "%08X-%08X", 433 sta->acct_session_id_hi, sta->acct_session_id_lo); 434 if (!radius_msg_add_attr(msg, RADIUS_ATTR_ACCT_SESSION_ID, 435 (u8 *) buf, os_strlen(buf))) { 436 wpa_printf(MSG_ERROR, "Could not add Acct-Session-Id"); 437 return -1; 438 } 439 } 440 441#ifdef CONFIG_IEEE80211R 442 if (hapd->conf->wpa && wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt) && 443 sta->wpa_sm && 444 (wpa_key_mgmt_ft(wpa_auth_sta_key_mgmt(sta->wpa_sm)) || 445 sta->auth_alg == WLAN_AUTH_FT) && 446 !hostapd_config_get_radius_attr(req_attr, 447 RADIUS_ATTR_MOBILITY_DOMAIN_ID) && 448 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_MOBILITY_DOMAIN_ID, 449 WPA_GET_BE16( 450 hapd->conf->mobility_domain))) { 451 wpa_printf(MSG_ERROR, "Could not add Mobility-Domain-Id"); 452 return -1; 453 } 454#endif /* CONFIG_IEEE80211R */ 455 456 if (hapd->conf->wpa && sta->wpa_sm && 457 add_common_radius_sta_attr_rsn(hapd, req_attr, sta, msg) < 0) 458 return -1; 459 460 return 0; 461} 462 463 464int add_common_radius_attr(struct hostapd_data *hapd, 465 struct hostapd_radius_attr *req_attr, 466 struct sta_info *sta, 467 struct radius_msg *msg) 468{ 469 char buf[128]; 470 struct hostapd_radius_attr *attr; 471 472 if (!hostapd_config_get_radius_attr(req_attr, 473 RADIUS_ATTR_NAS_IP_ADDRESS) && 474 hapd->conf->own_ip_addr.af == AF_INET && 475 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS, 476 (u8 *) &hapd->conf->own_ip_addr.u.v4, 4)) { 477 wpa_printf(MSG_ERROR, "Could not add NAS-IP-Address"); 478 return -1; 479 } 480 481#ifdef CONFIG_IPV6 482 if (!hostapd_config_get_radius_attr(req_attr, 483 RADIUS_ATTR_NAS_IPV6_ADDRESS) && 484 hapd->conf->own_ip_addr.af == AF_INET6 && 485 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IPV6_ADDRESS, 486 (u8 *) &hapd->conf->own_ip_addr.u.v6, 16)) { 487 wpa_printf(MSG_ERROR, "Could not add NAS-IPv6-Address"); 488 return -1; 489 } 490#endif /* CONFIG_IPV6 */ 491 492 if (!hostapd_config_get_radius_attr(req_attr, 493 RADIUS_ATTR_NAS_IDENTIFIER) && 494 hapd->conf->nas_identifier && 495 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IDENTIFIER, 496 (u8 *) hapd->conf->nas_identifier, 497 os_strlen(hapd->conf->nas_identifier))) { 498 wpa_printf(MSG_ERROR, "Could not add NAS-Identifier"); 499 return -1; 500 } 501 502 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT ":%s", 503 MAC2STR(hapd->own_addr), 504 wpa_ssid_txt(hapd->conf->ssid.ssid, 505 hapd->conf->ssid.ssid_len)); 506 buf[sizeof(buf) - 1] = '\0'; 507 if (!hostapd_config_get_radius_attr(req_attr, 508 RADIUS_ATTR_CALLED_STATION_ID) && 509 !radius_msg_add_attr(msg, RADIUS_ATTR_CALLED_STATION_ID, 510 (u8 *) buf, os_strlen(buf))) { 511 wpa_printf(MSG_ERROR, "Could not add Called-Station-Id"); 512 return -1; 513 } 514 515 if (!hostapd_config_get_radius_attr(req_attr, 516 RADIUS_ATTR_NAS_PORT_TYPE) && 517 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT_TYPE, 518 RADIUS_NAS_PORT_TYPE_IEEE_802_11)) { 519 wpa_printf(MSG_ERROR, "Could not add NAS-Port-Type"); 520 return -1; 521 } 522 523#ifdef CONFIG_INTERWORKING 524 if (hapd->conf->interworking && 525 !is_zero_ether_addr(hapd->conf->hessid)) { 526 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT, 527 MAC2STR(hapd->conf->hessid)); 528 buf[sizeof(buf) - 1] = '\0'; 529 if (!hostapd_config_get_radius_attr(req_attr, 530 RADIUS_ATTR_WLAN_HESSID) && 531 !radius_msg_add_attr(msg, RADIUS_ATTR_WLAN_HESSID, 532 (u8 *) buf, os_strlen(buf))) { 533 wpa_printf(MSG_ERROR, "Could not add WLAN-HESSID"); 534 return -1; 535 } 536 } 537#endif /* CONFIG_INTERWORKING */ 538 539 if (sta && add_common_radius_sta_attr(hapd, req_attr, sta, msg) < 0) 540 return -1; 541 542 for (attr = req_attr; attr; attr = attr->next) { 543 if (!radius_msg_add_attr(msg, attr->type, 544 wpabuf_head(attr->val), 545 wpabuf_len(attr->val))) { 546 wpa_printf(MSG_ERROR, "Could not add RADIUS " 547 "attribute"); 548 return -1; 549 } 550 } 551 552 return 0; 553} 554 555 556static void ieee802_1x_encapsulate_radius(struct hostapd_data *hapd, 557 struct sta_info *sta, 558 const u8 *eap, size_t len) 559{ 560 struct radius_msg *msg; 561 struct eapol_state_machine *sm = sta->eapol_sm; 562 563 if (sm == NULL) 564 return; 565 566 ieee802_1x_learn_identity(hapd, sm, eap, len); 567 568 wpa_printf(MSG_DEBUG, "Encapsulating EAP message into a RADIUS " 569 "packet"); 570 571 sm->radius_identifier = radius_client_get_id(hapd->radius); 572 msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST, 573 sm->radius_identifier); 574 if (msg == NULL) { 575 wpa_printf(MSG_INFO, "Could not create new RADIUS packet"); 576 return; 577 } 578 579 radius_msg_make_authenticator(msg, (u8 *) sta, sizeof(*sta)); 580 581 if (sm->identity && 582 !radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME, 583 sm->identity, sm->identity_len)) { 584 wpa_printf(MSG_INFO, "Could not add User-Name"); 585 goto fail; 586 } 587 588 if (add_common_radius_attr(hapd, hapd->conf->radius_auth_req_attr, sta, 589 msg) < 0) 590 goto fail; 591 592 /* TODO: should probably check MTU from driver config; 2304 is max for 593 * IEEE 802.11, but use 1400 to avoid problems with too large packets 594 */ 595 if (!hostapd_config_get_radius_attr(hapd->conf->radius_auth_req_attr, 596 RADIUS_ATTR_FRAMED_MTU) && 597 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_FRAMED_MTU, 1400)) { 598 wpa_printf(MSG_INFO, "Could not add Framed-MTU"); 599 goto fail; 600 } 601 602 if (eap && !radius_msg_add_eap(msg, eap, len)) { 603 wpa_printf(MSG_INFO, "Could not add EAP-Message"); 604 goto fail; 605 } 606 607 /* State attribute must be copied if and only if this packet is 608 * Access-Request reply to the previous Access-Challenge */ 609 if (sm->last_recv_radius && 610 radius_msg_get_hdr(sm->last_recv_radius)->code == 611 RADIUS_CODE_ACCESS_CHALLENGE) { 612 int res = radius_msg_copy_attr(msg, sm->last_recv_radius, 613 RADIUS_ATTR_STATE); 614 if (res < 0) { 615 wpa_printf(MSG_INFO, "Could not copy State attribute from previous Access-Challenge"); 616 goto fail; 617 } 618 if (res > 0) { 619 wpa_printf(MSG_DEBUG, "Copied RADIUS State Attribute"); 620 } 621 } 622 623 if (hapd->conf->radius_request_cui) { 624 const u8 *cui; 625 size_t cui_len; 626 /* Add previously learned CUI or nul CUI to request CUI */ 627 if (sm->radius_cui) { 628 cui = wpabuf_head(sm->radius_cui); 629 cui_len = wpabuf_len(sm->radius_cui); 630 } else { 631 cui = (const u8 *) "\0"; 632 cui_len = 1; 633 } 634 if (!radius_msg_add_attr(msg, 635 RADIUS_ATTR_CHARGEABLE_USER_IDENTITY, 636 cui, cui_len)) { 637 wpa_printf(MSG_ERROR, "Could not add CUI"); 638 goto fail; 639 } 640 } 641 642#ifdef CONFIG_HS20 643 if (hapd->conf->hs20) { 644 u8 ver = 1; /* Release 2 */ 645 if (!radius_msg_add_wfa( 646 msg, RADIUS_VENDOR_ATTR_WFA_HS20_AP_VERSION, 647 &ver, 1)) { 648 wpa_printf(MSG_ERROR, "Could not add HS 2.0 AP " 649 "version"); 650 goto fail; 651 } 652 653 if (sta->hs20_ie && wpabuf_len(sta->hs20_ie) > 0) { 654 const u8 *pos; 655 u8 buf[3]; 656 u16 id; 657 pos = wpabuf_head_u8(sta->hs20_ie); 658 buf[0] = (*pos) >> 4; 659 if (((*pos) & HS20_PPS_MO_ID_PRESENT) && 660 wpabuf_len(sta->hs20_ie) >= 3) 661 id = WPA_GET_LE16(pos + 1); 662 else 663 id = 0; 664 WPA_PUT_BE16(buf + 1, id); 665 if (!radius_msg_add_wfa( 666 msg, 667 RADIUS_VENDOR_ATTR_WFA_HS20_STA_VERSION, 668 buf, sizeof(buf))) { 669 wpa_printf(MSG_ERROR, "Could not add HS 2.0 " 670 "STA version"); 671 goto fail; 672 } 673 } 674 } 675#endif /* CONFIG_HS20 */ 676 677 if (radius_client_send(hapd->radius, msg, RADIUS_AUTH, sta->addr) < 0) 678 goto fail; 679 680 return; 681 682 fail: 683 radius_msg_free(msg); 684} 685#endif /* CONFIG_NO_RADIUS */ 686 687 688static void handle_eap_response(struct hostapd_data *hapd, 689 struct sta_info *sta, struct eap_hdr *eap, 690 size_t len) 691{ 692 u8 type, *data; 693 struct eapol_state_machine *sm = sta->eapol_sm; 694 if (sm == NULL) 695 return; 696 697 data = (u8 *) (eap + 1); 698 699 if (len < sizeof(*eap) + 1) { 700 wpa_printf(MSG_INFO, "handle_eap_response: too short response data"); 701 return; 702 } 703 704 sm->eap_type_supp = type = data[0]; 705 706 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X, 707 HOSTAPD_LEVEL_DEBUG, "received EAP packet (code=%d " 708 "id=%d len=%d) from STA: EAP Response-%s (%d)", 709 eap->code, eap->identifier, be_to_host16(eap->length), 710 eap_server_get_name(0, type), type); 711 712 sm->dot1xAuthEapolRespFramesRx++; 713 714 wpabuf_free(sm->eap_if->eapRespData); 715 sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len); 716 sm->eapolEap = TRUE; 717} 718 719 720static void handle_eap_initiate(struct hostapd_data *hapd, 721 struct sta_info *sta, struct eap_hdr *eap, 722 size_t len) 723{ 724#ifdef CONFIG_ERP 725 u8 type, *data; 726 struct eapol_state_machine *sm = sta->eapol_sm; 727 728 if (sm == NULL) 729 return; 730 731 if (len < sizeof(*eap) + 1) { 732 wpa_printf(MSG_INFO, 733 "handle_eap_initiate: too short response data"); 734 return; 735 } 736 737 data = (u8 *) (eap + 1); 738 type = data[0]; 739 740 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X, 741 HOSTAPD_LEVEL_DEBUG, "received EAP packet (code=%d " 742 "id=%d len=%d) from STA: EAP Initiate type %u", 743 eap->code, eap->identifier, be_to_host16(eap->length), 744 type); 745 746 wpabuf_free(sm->eap_if->eapRespData); 747 sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len); 748 sm->eapolEap = TRUE; 749#endif /* CONFIG_ERP */ 750} 751 752 753/* Process incoming EAP packet from Supplicant */ 754static void handle_eap(struct hostapd_data *hapd, struct sta_info *sta, 755 u8 *buf, size_t len) 756{ 757 struct eap_hdr *eap; 758 u16 eap_len; 759 760 if (len < sizeof(*eap)) { 761 wpa_printf(MSG_INFO, " too short EAP packet"); 762 return; 763 } 764 765 eap = (struct eap_hdr *) buf; 766 767 eap_len = be_to_host16(eap->length); 768 wpa_printf(MSG_DEBUG, "EAP: code=%d identifier=%d length=%d", 769 eap->code, eap->identifier, eap_len); 770 if (eap_len < sizeof(*eap)) { 771 wpa_printf(MSG_DEBUG, " Invalid EAP length"); 772 return; 773 } else if (eap_len > len) { 774 wpa_printf(MSG_DEBUG, " Too short frame to contain this EAP " 775 "packet"); 776 return; 777 } else if (eap_len < len) { 778 wpa_printf(MSG_DEBUG, " Ignoring %lu extra bytes after EAP " 779 "packet", (unsigned long) len - eap_len); 780 } 781 782 switch (eap->code) { 783 case EAP_CODE_REQUEST: 784 wpa_printf(MSG_DEBUG, " (request)"); 785 return; 786 case EAP_CODE_RESPONSE: 787 wpa_printf(MSG_DEBUG, " (response)"); 788 handle_eap_response(hapd, sta, eap, eap_len); 789 break; 790 case EAP_CODE_SUCCESS: 791 wpa_printf(MSG_DEBUG, " (success)"); 792 return; 793 case EAP_CODE_FAILURE: 794 wpa_printf(MSG_DEBUG, " (failure)"); 795 return; 796 case EAP_CODE_INITIATE: 797 wpa_printf(MSG_DEBUG, " (initiate)"); 798 handle_eap_initiate(hapd, sta, eap, eap_len); 799 break; 800 case EAP_CODE_FINISH: 801 wpa_printf(MSG_DEBUG, " (finish)"); 802 break; 803 default: 804 wpa_printf(MSG_DEBUG, " (unknown code)"); 805 return; 806 } 807} 808 809 810static struct eapol_state_machine * 811ieee802_1x_alloc_eapol_sm(struct hostapd_data *hapd, struct sta_info *sta) 812{ 813 int flags = 0; 814 if (sta->flags & WLAN_STA_PREAUTH) 815 flags |= EAPOL_SM_PREAUTH; 816 if (sta->wpa_sm) { 817 flags |= EAPOL_SM_USES_WPA; 818 if (wpa_auth_sta_get_pmksa(sta->wpa_sm)) 819 flags |= EAPOL_SM_FROM_PMKSA_CACHE; 820 } 821 return eapol_auth_alloc(hapd->eapol_auth, sta->addr, flags, 822 sta->wps_ie, sta->p2p_ie, sta, 823 sta->identity, sta->radius_cui); 824} 825 826 827/** 828 * ieee802_1x_receive - Process the EAPOL frames from the Supplicant 829 * @hapd: hostapd BSS data 830 * @sa: Source address (sender of the EAPOL frame) 831 * @buf: EAPOL frame 832 * @len: Length of buf in octets 833 * 834 * This function is called for each incoming EAPOL frame from the interface 835 */ 836void ieee802_1x_receive(struct hostapd_data *hapd, const u8 *sa, const u8 *buf, 837 size_t len) 838{ 839 struct sta_info *sta; 840 struct ieee802_1x_hdr *hdr; 841 struct ieee802_1x_eapol_key *key; 842 u16 datalen; 843 struct rsn_pmksa_cache_entry *pmksa; 844 int key_mgmt; 845 846 if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen && 847 !hapd->conf->wps_state) 848 return; 849 850 wpa_printf(MSG_DEBUG, "IEEE 802.1X: %lu bytes from " MACSTR, 851 (unsigned long) len, MAC2STR(sa)); 852 sta = ap_get_sta(hapd, sa); 853 if (!sta || (!(sta->flags & (WLAN_STA_ASSOC | WLAN_STA_PREAUTH)) && 854 !(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED))) { 855 wpa_printf(MSG_DEBUG, "IEEE 802.1X data frame from not " 856 "associated/Pre-authenticating STA"); 857 return; 858 } 859 860 if (len < sizeof(*hdr)) { 861 wpa_printf(MSG_INFO, " too short IEEE 802.1X packet"); 862 return; 863 } 864 865 hdr = (struct ieee802_1x_hdr *) buf; 866 datalen = be_to_host16(hdr->length); 867 wpa_printf(MSG_DEBUG, " IEEE 802.1X: version=%d type=%d length=%d", 868 hdr->version, hdr->type, datalen); 869 870 if (len - sizeof(*hdr) < datalen) { 871 wpa_printf(MSG_INFO, " frame too short for this IEEE 802.1X packet"); 872 if (sta->eapol_sm) 873 sta->eapol_sm->dot1xAuthEapLengthErrorFramesRx++; 874 return; 875 } 876 if (len - sizeof(*hdr) > datalen) { 877 wpa_printf(MSG_DEBUG, " ignoring %lu extra octets after " 878 "IEEE 802.1X packet", 879 (unsigned long) len - sizeof(*hdr) - datalen); 880 } 881 882 if (sta->eapol_sm) { 883 sta->eapol_sm->dot1xAuthLastEapolFrameVersion = hdr->version; 884 sta->eapol_sm->dot1xAuthEapolFramesRx++; 885 } 886 887 key = (struct ieee802_1x_eapol_key *) (hdr + 1); 888 if (datalen >= sizeof(struct ieee802_1x_eapol_key) && 889 hdr->type == IEEE802_1X_TYPE_EAPOL_KEY && 890 (key->type == EAPOL_KEY_TYPE_WPA || 891 key->type == EAPOL_KEY_TYPE_RSN)) { 892 wpa_receive(hapd->wpa_auth, sta->wpa_sm, (u8 *) hdr, 893 sizeof(*hdr) + datalen); 894 return; 895 } 896 897 if (!hapd->conf->ieee802_1x && !hapd->conf->osen && 898 !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) { 899 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - " 900 "802.1X not enabled and WPS not used"); 901 return; 902 } 903 904 key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm); 905 if (key_mgmt != -1 && wpa_key_mgmt_wpa_psk(key_mgmt)) { 906 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - " 907 "STA is using PSK"); 908 return; 909 } 910 911 if (!sta->eapol_sm) { 912 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta); 913 if (!sta->eapol_sm) 914 return; 915 916#ifdef CONFIG_WPS 917 if (!hapd->conf->ieee802_1x && hapd->conf->wps_state) { 918 u32 wflags = sta->flags & (WLAN_STA_WPS | 919 WLAN_STA_WPS2 | 920 WLAN_STA_MAYBE_WPS); 921 if (wflags == WLAN_STA_MAYBE_WPS || 922 wflags == (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) { 923 /* 924 * Delay EAPOL frame transmission until a 925 * possible WPS STA initiates the handshake 926 * with EAPOL-Start. Only allow the wait to be 927 * skipped if the STA is known to support WPS 928 * 2.0. 929 */ 930 wpa_printf(MSG_DEBUG, "WPS: Do not start " 931 "EAPOL until EAPOL-Start is " 932 "received"); 933 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START; 934 } 935 } 936#endif /* CONFIG_WPS */ 937 938 sta->eapol_sm->eap_if->portEnabled = TRUE; 939 } 940 941 /* since we support version 1, we can ignore version field and proceed 942 * as specified in version 1 standard [IEEE Std 802.1X-2001, 7.5.5] */ 943 /* TODO: actually, we are not version 1 anymore.. However, Version 2 944 * does not change frame contents, so should be ok to process frames 945 * more or less identically. Some changes might be needed for 946 * verification of fields. */ 947 948 switch (hdr->type) { 949 case IEEE802_1X_TYPE_EAP_PACKET: 950 handle_eap(hapd, sta, (u8 *) (hdr + 1), datalen); 951 break; 952 953 case IEEE802_1X_TYPE_EAPOL_START: 954 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 955 HOSTAPD_LEVEL_DEBUG, "received EAPOL-Start " 956 "from STA"); 957 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START; 958 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm); 959 if (pmksa) { 960 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA, 961 HOSTAPD_LEVEL_DEBUG, "cached PMKSA " 962 "available - ignore it since " 963 "STA sent EAPOL-Start"); 964 wpa_auth_sta_clear_pmksa(sta->wpa_sm, pmksa); 965 } 966 sta->eapol_sm->eapolStart = TRUE; 967 sta->eapol_sm->dot1xAuthEapolStartFramesRx++; 968 eap_server_clear_identity(sta->eapol_sm->eap); 969 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL); 970 break; 971 972 case IEEE802_1X_TYPE_EAPOL_LOGOFF: 973 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 974 HOSTAPD_LEVEL_DEBUG, "received EAPOL-Logoff " 975 "from STA"); 976 sta->acct_terminate_cause = 977 RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST; 978 accounting_sta_stop(hapd, sta); 979 sta->eapol_sm->eapolLogoff = TRUE; 980 sta->eapol_sm->dot1xAuthEapolLogoffFramesRx++; 981 eap_server_clear_identity(sta->eapol_sm->eap); 982 break; 983 984 case IEEE802_1X_TYPE_EAPOL_KEY: 985 wpa_printf(MSG_DEBUG, " EAPOL-Key"); 986 if (!ap_sta_is_authorized(sta)) { 987 wpa_printf(MSG_DEBUG, " Dropped key data from " 988 "unauthorized Supplicant"); 989 break; 990 } 991 break; 992 993 case IEEE802_1X_TYPE_EAPOL_ENCAPSULATED_ASF_ALERT: 994 wpa_printf(MSG_DEBUG, " EAPOL-Encapsulated-ASF-Alert"); 995 /* TODO: implement support for this; show data */ 996 break; 997 998 default: 999 wpa_printf(MSG_DEBUG, " unknown IEEE 802.1X packet type"); 1000 sta->eapol_sm->dot1xAuthInvalidEapolFramesRx++; 1001 break; 1002 } 1003 1004 eapol_auth_step(sta->eapol_sm); 1005} 1006 1007 1008/** 1009 * ieee802_1x_new_station - Start IEEE 802.1X authentication 1010 * @hapd: hostapd BSS data 1011 * @sta: The station 1012 * 1013 * This function is called to start IEEE 802.1X authentication when a new 1014 * station completes IEEE 802.11 association. 1015 */ 1016void ieee802_1x_new_station(struct hostapd_data *hapd, struct sta_info *sta) 1017{ 1018 struct rsn_pmksa_cache_entry *pmksa; 1019 int reassoc = 1; 1020 int force_1x = 0; 1021 int key_mgmt; 1022 1023#ifdef CONFIG_WPS 1024 if (hapd->conf->wps_state && 1025 ((hapd->conf->wpa && (sta->flags & WLAN_STA_MAYBE_WPS)) || 1026 (sta->flags & WLAN_STA_WPS))) { 1027 /* 1028 * Need to enable IEEE 802.1X/EAPOL state machines for possible 1029 * WPS handshake even if IEEE 802.1X/EAPOL is not used for 1030 * authentication in this BSS. 1031 */ 1032 force_1x = 1; 1033 } 1034#endif /* CONFIG_WPS */ 1035 1036 if (!force_1x && !hapd->conf->ieee802_1x && !hapd->conf->osen) { 1037 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - " 1038 "802.1X not enabled or forced for WPS"); 1039 /* 1040 * Clear any possible EAPOL authenticator state to support 1041 * reassociation change from WPS to PSK. 1042 */ 1043 ieee802_1x_free_station(sta); 1044 return; 1045 } 1046 1047 key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm); 1048 if (key_mgmt != -1 && wpa_key_mgmt_wpa_psk(key_mgmt)) { 1049 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - using PSK"); 1050 /* 1051 * Clear any possible EAPOL authenticator state to support 1052 * reassociation change from WPA-EAP to PSK. 1053 */ 1054 ieee802_1x_free_station(sta); 1055 return; 1056 } 1057 1058 if (sta->eapol_sm == NULL) { 1059 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 1060 HOSTAPD_LEVEL_DEBUG, "start authentication"); 1061 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta); 1062 if (sta->eapol_sm == NULL) { 1063 hostapd_logger(hapd, sta->addr, 1064 HOSTAPD_MODULE_IEEE8021X, 1065 HOSTAPD_LEVEL_INFO, 1066 "failed to allocate state machine"); 1067 return; 1068 } 1069 reassoc = 0; 1070 } 1071 1072#ifdef CONFIG_WPS 1073 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START; 1074 if (!hapd->conf->ieee802_1x && hapd->conf->wps_state && 1075 !(sta->flags & WLAN_STA_WPS2)) { 1076 /* 1077 * Delay EAPOL frame transmission until a possible WPS STA 1078 * initiates the handshake with EAPOL-Start. Only allow the 1079 * wait to be skipped if the STA is known to support WPS 2.0. 1080 */ 1081 wpa_printf(MSG_DEBUG, "WPS: Do not start EAPOL until " 1082 "EAPOL-Start is received"); 1083 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START; 1084 } 1085#endif /* CONFIG_WPS */ 1086 1087 sta->eapol_sm->eap_if->portEnabled = TRUE; 1088 1089#ifdef CONFIG_IEEE80211R 1090 if (sta->auth_alg == WLAN_AUTH_FT) { 1091 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 1092 HOSTAPD_LEVEL_DEBUG, 1093 "PMK from FT - skip IEEE 802.1X/EAP"); 1094 /* Setup EAPOL state machines to already authenticated state 1095 * because of existing FT information from R0KH. */ 1096 sta->eapol_sm->keyRun = TRUE; 1097 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE; 1098 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING; 1099 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS; 1100 sta->eapol_sm->authSuccess = TRUE; 1101 sta->eapol_sm->authFail = FALSE; 1102 if (sta->eapol_sm->eap) 1103 eap_sm_notify_cached(sta->eapol_sm->eap); 1104 /* TODO: get vlan_id from R0KH using RRB message */ 1105 return; 1106 } 1107#endif /* CONFIG_IEEE80211R */ 1108 1109 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm); 1110 if (pmksa) { 1111 int old_vlanid; 1112 1113 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 1114 HOSTAPD_LEVEL_DEBUG, 1115 "PMK from PMKSA cache - skip IEEE 802.1X/EAP"); 1116 /* Setup EAPOL state machines to already authenticated state 1117 * because of existing PMKSA information in the cache. */ 1118 sta->eapol_sm->keyRun = TRUE; 1119 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE; 1120 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING; 1121 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS; 1122 sta->eapol_sm->authSuccess = TRUE; 1123 sta->eapol_sm->authFail = FALSE; 1124 if (sta->eapol_sm->eap) 1125 eap_sm_notify_cached(sta->eapol_sm->eap); 1126 old_vlanid = sta->vlan_id; 1127 pmksa_cache_to_eapol_data(pmksa, sta->eapol_sm); 1128 if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED) 1129 sta->vlan_id = 0; 1130 ap_sta_bind_vlan(hapd, sta, old_vlanid); 1131 } else { 1132 if (reassoc) { 1133 /* 1134 * Force EAPOL state machines to start 1135 * re-authentication without having to wait for the 1136 * Supplicant to send EAPOL-Start. 1137 */ 1138 sta->eapol_sm->reAuthenticate = TRUE; 1139 } 1140 eapol_auth_step(sta->eapol_sm); 1141 } 1142} 1143 1144 1145void ieee802_1x_free_station(struct sta_info *sta) 1146{ 1147 struct eapol_state_machine *sm = sta->eapol_sm; 1148 1149 if (sm == NULL) 1150 return; 1151 1152 sta->eapol_sm = NULL; 1153 1154#ifndef CONFIG_NO_RADIUS 1155 radius_msg_free(sm->last_recv_radius); 1156 radius_free_class(&sm->radius_class); 1157 wpabuf_free(sm->radius_cui); 1158#endif /* CONFIG_NO_RADIUS */ 1159 1160 os_free(sm->identity); 1161 eapol_auth_free(sm); 1162} 1163 1164 1165#ifndef CONFIG_NO_RADIUS 1166static void ieee802_1x_decapsulate_radius(struct hostapd_data *hapd, 1167 struct sta_info *sta) 1168{ 1169 struct wpabuf *eap; 1170 const struct eap_hdr *hdr; 1171 int eap_type = -1; 1172 char buf[64]; 1173 struct radius_msg *msg; 1174 struct eapol_state_machine *sm = sta->eapol_sm; 1175 1176 if (sm == NULL || sm->last_recv_radius == NULL) { 1177 if (sm) 1178 sm->eap_if->aaaEapNoReq = TRUE; 1179 return; 1180 } 1181 1182 msg = sm->last_recv_radius; 1183 1184 eap = radius_msg_get_eap(msg); 1185 if (eap == NULL) { 1186 /* RFC 3579, Chap. 2.6.3: 1187 * RADIUS server SHOULD NOT send Access-Reject/no EAP-Message 1188 * attribute */ 1189 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 1190 HOSTAPD_LEVEL_WARNING, "could not extract " 1191 "EAP-Message from RADIUS message"); 1192 sm->eap_if->aaaEapNoReq = TRUE; 1193 return; 1194 } 1195 1196 if (wpabuf_len(eap) < sizeof(*hdr)) { 1197 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 1198 HOSTAPD_LEVEL_WARNING, "too short EAP packet " 1199 "received from authentication server"); 1200 wpabuf_free(eap); 1201 sm->eap_if->aaaEapNoReq = TRUE; 1202 return; 1203 } 1204 1205 if (wpabuf_len(eap) > sizeof(*hdr)) 1206 eap_type = (wpabuf_head_u8(eap))[sizeof(*hdr)]; 1207 1208 hdr = wpabuf_head(eap); 1209 switch (hdr->code) { 1210 case EAP_CODE_REQUEST: 1211 if (eap_type >= 0) 1212 sm->eap_type_authsrv = eap_type; 1213 os_snprintf(buf, sizeof(buf), "EAP-Request-%s (%d)", 1214 eap_server_get_name(0, eap_type), eap_type); 1215 break; 1216 case EAP_CODE_RESPONSE: 1217 os_snprintf(buf, sizeof(buf), "EAP Response-%s (%d)", 1218 eap_server_get_name(0, eap_type), eap_type); 1219 break; 1220 case EAP_CODE_SUCCESS: 1221 os_strlcpy(buf, "EAP Success", sizeof(buf)); 1222 break; 1223 case EAP_CODE_FAILURE: 1224 os_strlcpy(buf, "EAP Failure", sizeof(buf)); 1225 break; 1226 default: 1227 os_strlcpy(buf, "unknown EAP code", sizeof(buf)); 1228 break; 1229 } 1230 buf[sizeof(buf) - 1] = '\0'; 1231 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 1232 HOSTAPD_LEVEL_DEBUG, "decapsulated EAP packet (code=%d " 1233 "id=%d len=%d) from RADIUS server: %s", 1234 hdr->code, hdr->identifier, be_to_host16(hdr->length), 1235 buf); 1236 sm->eap_if->aaaEapReq = TRUE; 1237 1238 wpabuf_free(sm->eap_if->aaaEapReqData); 1239 sm->eap_if->aaaEapReqData = eap; 1240} 1241 1242 1243static void ieee802_1x_get_keys(struct hostapd_data *hapd, 1244 struct sta_info *sta, struct radius_msg *msg, 1245 struct radius_msg *req, 1246 const u8 *shared_secret, 1247 size_t shared_secret_len) 1248{ 1249 struct radius_ms_mppe_keys *keys; 1250 struct eapol_state_machine *sm = sta->eapol_sm; 1251 if (sm == NULL) 1252 return; 1253 1254 keys = radius_msg_get_ms_keys(msg, req, shared_secret, 1255 shared_secret_len); 1256 1257 if (keys && keys->send && keys->recv) { 1258 size_t len = keys->send_len + keys->recv_len; 1259 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Send-Key", 1260 keys->send, keys->send_len); 1261 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Recv-Key", 1262 keys->recv, keys->recv_len); 1263 1264 os_free(sm->eap_if->aaaEapKeyData); 1265 sm->eap_if->aaaEapKeyData = os_malloc(len); 1266 if (sm->eap_if->aaaEapKeyData) { 1267 os_memcpy(sm->eap_if->aaaEapKeyData, keys->recv, 1268 keys->recv_len); 1269 os_memcpy(sm->eap_if->aaaEapKeyData + keys->recv_len, 1270 keys->send, keys->send_len); 1271 sm->eap_if->aaaEapKeyDataLen = len; 1272 sm->eap_if->aaaEapKeyAvailable = TRUE; 1273 } 1274 } else { 1275 wpa_printf(MSG_DEBUG, 1276 "MS-MPPE: 1x_get_keys, could not get keys: %p send: %p recv: %p", 1277 keys, keys ? keys->send : NULL, 1278 keys ? keys->recv : NULL); 1279 } 1280 1281 if (keys) { 1282 os_free(keys->send); 1283 os_free(keys->recv); 1284 os_free(keys); 1285 } 1286} 1287 1288 1289static void ieee802_1x_store_radius_class(struct hostapd_data *hapd, 1290 struct sta_info *sta, 1291 struct radius_msg *msg) 1292{ 1293 u8 *class; 1294 size_t class_len; 1295 struct eapol_state_machine *sm = sta->eapol_sm; 1296 int count, i; 1297 struct radius_attr_data *nclass; 1298 size_t nclass_count; 1299 1300 if (!hapd->conf->radius->acct_server || hapd->radius == NULL || 1301 sm == NULL) 1302 return; 1303 1304 radius_free_class(&sm->radius_class); 1305 count = radius_msg_count_attr(msg, RADIUS_ATTR_CLASS, 1); 1306 if (count <= 0) 1307 return; 1308 1309 nclass = os_calloc(count, sizeof(struct radius_attr_data)); 1310 if (nclass == NULL) 1311 return; 1312 1313 nclass_count = 0; 1314 1315 class = NULL; 1316 for (i = 0; i < count; i++) { 1317 do { 1318 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CLASS, 1319 &class, &class_len, 1320 class) < 0) { 1321 i = count; 1322 break; 1323 } 1324 } while (class_len < 1); 1325 1326 nclass[nclass_count].data = os_malloc(class_len); 1327 if (nclass[nclass_count].data == NULL) 1328 break; 1329 1330 os_memcpy(nclass[nclass_count].data, class, class_len); 1331 nclass[nclass_count].len = class_len; 1332 nclass_count++; 1333 } 1334 1335 sm->radius_class.attr = nclass; 1336 sm->radius_class.count = nclass_count; 1337 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Stored %lu RADIUS Class " 1338 "attributes for " MACSTR, 1339 (unsigned long) sm->radius_class.count, 1340 MAC2STR(sta->addr)); 1341} 1342 1343 1344/* Update sta->identity based on User-Name attribute in Access-Accept */ 1345static void ieee802_1x_update_sta_identity(struct hostapd_data *hapd, 1346 struct sta_info *sta, 1347 struct radius_msg *msg) 1348{ 1349 u8 *buf, *identity; 1350 size_t len; 1351 struct eapol_state_machine *sm = sta->eapol_sm; 1352 1353 if (sm == NULL) 1354 return; 1355 1356 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME, &buf, &len, 1357 NULL) < 0) 1358 return; 1359 1360 identity = (u8 *) dup_binstr(buf, len); 1361 if (identity == NULL) 1362 return; 1363 1364 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 1365 HOSTAPD_LEVEL_DEBUG, "old identity '%s' updated with " 1366 "User-Name from Access-Accept '%s'", 1367 sm->identity ? (char *) sm->identity : "N/A", 1368 (char *) identity); 1369 1370 os_free(sm->identity); 1371 sm->identity = identity; 1372 sm->identity_len = len; 1373} 1374 1375 1376/* Update CUI based on Chargeable-User-Identity attribute in Access-Accept */ 1377static void ieee802_1x_update_sta_cui(struct hostapd_data *hapd, 1378 struct sta_info *sta, 1379 struct radius_msg *msg) 1380{ 1381 struct eapol_state_machine *sm = sta->eapol_sm; 1382 struct wpabuf *cui; 1383 u8 *buf; 1384 size_t len; 1385 1386 if (sm == NULL) 1387 return; 1388 1389 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CHARGEABLE_USER_IDENTITY, 1390 &buf, &len, NULL) < 0) 1391 return; 1392 1393 cui = wpabuf_alloc_copy(buf, len); 1394 if (cui == NULL) 1395 return; 1396 1397 wpabuf_free(sm->radius_cui); 1398 sm->radius_cui = cui; 1399} 1400 1401 1402#ifdef CONFIG_HS20 1403 1404static void ieee802_1x_hs20_sub_rem(struct sta_info *sta, u8 *pos, size_t len) 1405{ 1406 sta->remediation = 1; 1407 os_free(sta->remediation_url); 1408 if (len > 2) { 1409 sta->remediation_url = os_malloc(len); 1410 if (!sta->remediation_url) 1411 return; 1412 sta->remediation_method = pos[0]; 1413 os_memcpy(sta->remediation_url, pos + 1, len - 1); 1414 sta->remediation_url[len - 1] = '\0'; 1415 wpa_printf(MSG_DEBUG, "HS 2.0: Subscription remediation needed " 1416 "for " MACSTR " - server method %u URL %s", 1417 MAC2STR(sta->addr), sta->remediation_method, 1418 sta->remediation_url); 1419 } else { 1420 sta->remediation_url = NULL; 1421 wpa_printf(MSG_DEBUG, "HS 2.0: Subscription remediation needed " 1422 "for " MACSTR, MAC2STR(sta->addr)); 1423 } 1424 /* TODO: assign the STA into remediation VLAN or add filtering */ 1425} 1426 1427 1428static void ieee802_1x_hs20_deauth_req(struct hostapd_data *hapd, 1429 struct sta_info *sta, u8 *pos, 1430 size_t len) 1431{ 1432 if (len < 3) 1433 return; /* Malformed information */ 1434 sta->hs20_deauth_requested = 1; 1435 wpa_printf(MSG_DEBUG, "HS 2.0: Deauthentication request - Code %u " 1436 "Re-auth Delay %u", 1437 *pos, WPA_GET_LE16(pos + 1)); 1438 wpabuf_free(sta->hs20_deauth_req); 1439 sta->hs20_deauth_req = wpabuf_alloc(len + 1); 1440 if (sta->hs20_deauth_req) { 1441 wpabuf_put_data(sta->hs20_deauth_req, pos, 3); 1442 wpabuf_put_u8(sta->hs20_deauth_req, len - 3); 1443 wpabuf_put_data(sta->hs20_deauth_req, pos + 3, len - 3); 1444 } 1445 ap_sta_session_timeout(hapd, sta, hapd->conf->hs20_deauth_req_timeout); 1446} 1447 1448 1449static void ieee802_1x_hs20_session_info(struct hostapd_data *hapd, 1450 struct sta_info *sta, u8 *pos, 1451 size_t len, int session_timeout) 1452{ 1453 unsigned int swt; 1454 int warning_time, beacon_int; 1455 1456 if (len < 1) 1457 return; /* Malformed information */ 1458 os_free(sta->hs20_session_info_url); 1459 sta->hs20_session_info_url = os_malloc(len); 1460 if (sta->hs20_session_info_url == NULL) 1461 return; 1462 swt = pos[0]; 1463 os_memcpy(sta->hs20_session_info_url, pos + 1, len - 1); 1464 sta->hs20_session_info_url[len - 1] = '\0'; 1465 wpa_printf(MSG_DEBUG, "HS 2.0: Session Information URL='%s' SWT=%u " 1466 "(session_timeout=%d)", 1467 sta->hs20_session_info_url, swt, session_timeout); 1468 if (session_timeout < 0) { 1469 wpa_printf(MSG_DEBUG, "HS 2.0: No Session-Timeout set - ignore session info URL"); 1470 return; 1471 } 1472 if (swt == 255) 1473 swt = 1; /* Use one minute as the AP selected value */ 1474 1475 if ((unsigned int) session_timeout < swt * 60) 1476 warning_time = 0; 1477 else 1478 warning_time = session_timeout - swt * 60; 1479 1480 beacon_int = hapd->iconf->beacon_int; 1481 if (beacon_int < 1) 1482 beacon_int = 100; /* best guess */ 1483 sta->hs20_disassoc_timer = swt * 60 * 1000 / beacon_int * 125 / 128; 1484 if (sta->hs20_disassoc_timer > 65535) 1485 sta->hs20_disassoc_timer = 65535; 1486 1487 ap_sta_session_warning_timeout(hapd, sta, warning_time); 1488} 1489 1490#endif /* CONFIG_HS20 */ 1491 1492 1493static void ieee802_1x_check_hs20(struct hostapd_data *hapd, 1494 struct sta_info *sta, 1495 struct radius_msg *msg, 1496 int session_timeout) 1497{ 1498#ifdef CONFIG_HS20 1499 u8 *buf, *pos, *end, type, sublen; 1500 size_t len; 1501 1502 buf = NULL; 1503 sta->remediation = 0; 1504 sta->hs20_deauth_requested = 0; 1505 1506 for (;;) { 1507 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_VENDOR_SPECIFIC, 1508 &buf, &len, buf) < 0) 1509 break; 1510 if (len < 6) 1511 continue; 1512 pos = buf; 1513 end = buf + len; 1514 if (WPA_GET_BE32(pos) != RADIUS_VENDOR_ID_WFA) 1515 continue; 1516 pos += 4; 1517 1518 type = *pos++; 1519 sublen = *pos++; 1520 if (sublen < 2) 1521 continue; /* invalid length */ 1522 sublen -= 2; /* skip header */ 1523 if (pos + sublen > end) 1524 continue; /* invalid WFA VSA */ 1525 1526 switch (type) { 1527 case RADIUS_VENDOR_ATTR_WFA_HS20_SUBSCR_REMEDIATION: 1528 ieee802_1x_hs20_sub_rem(sta, pos, sublen); 1529 break; 1530 case RADIUS_VENDOR_ATTR_WFA_HS20_DEAUTH_REQ: 1531 ieee802_1x_hs20_deauth_req(hapd, sta, pos, sublen); 1532 break; 1533 case RADIUS_VENDOR_ATTR_WFA_HS20_SESSION_INFO_URL: 1534 ieee802_1x_hs20_session_info(hapd, sta, pos, sublen, 1535 session_timeout); 1536 break; 1537 } 1538 } 1539#endif /* CONFIG_HS20 */ 1540} 1541 1542 1543struct sta_id_search { 1544 u8 identifier; 1545 struct eapol_state_machine *sm; 1546}; 1547 1548 1549static int ieee802_1x_select_radius_identifier(struct hostapd_data *hapd, 1550 struct sta_info *sta, 1551 void *ctx) 1552{ 1553 struct sta_id_search *id_search = ctx; 1554 struct eapol_state_machine *sm = sta->eapol_sm; 1555 1556 if (sm && sm->radius_identifier >= 0 && 1557 sm->radius_identifier == id_search->identifier) { 1558 id_search->sm = sm; 1559 return 1; 1560 } 1561 return 0; 1562} 1563 1564 1565static struct eapol_state_machine * 1566ieee802_1x_search_radius_identifier(struct hostapd_data *hapd, u8 identifier) 1567{ 1568 struct sta_id_search id_search; 1569 id_search.identifier = identifier; 1570 id_search.sm = NULL; 1571 ap_for_each_sta(hapd, ieee802_1x_select_radius_identifier, &id_search); 1572 return id_search.sm; 1573} 1574 1575 1576/** 1577 * ieee802_1x_receive_auth - Process RADIUS frames from Authentication Server 1578 * @msg: RADIUS response message 1579 * @req: RADIUS request message 1580 * @shared_secret: RADIUS shared secret 1581 * @shared_secret_len: Length of shared_secret in octets 1582 * @data: Context data (struct hostapd_data *) 1583 * Returns: Processing status 1584 */ 1585static RadiusRxResult 1586ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req, 1587 const u8 *shared_secret, size_t shared_secret_len, 1588 void *data) 1589{ 1590 struct hostapd_data *hapd = data; 1591 struct sta_info *sta; 1592 u32 session_timeout = 0, termination_action, acct_interim_interval; 1593 int session_timeout_set, old_vlanid = 0; 1594 struct eapol_state_machine *sm; 1595 int override_eapReq = 0; 1596 struct radius_hdr *hdr = radius_msg_get_hdr(msg); 1597 1598 sm = ieee802_1x_search_radius_identifier(hapd, hdr->identifier); 1599 if (sm == NULL) { 1600 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Could not find matching " 1601 "station for this RADIUS message"); 1602 return RADIUS_RX_UNKNOWN; 1603 } 1604 sta = sm->sta; 1605 1606 /* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be 1607 * present when packet contains an EAP-Message attribute */ 1608 if (hdr->code == RADIUS_CODE_ACCESS_REJECT && 1609 radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL, 1610 0) < 0 && 1611 radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) { 1612 wpa_printf(MSG_DEBUG, "Allowing RADIUS Access-Reject without " 1613 "Message-Authenticator since it does not include " 1614 "EAP-Message"); 1615 } else if (radius_msg_verify(msg, shared_secret, shared_secret_len, 1616 req, 1)) { 1617 wpa_printf(MSG_INFO, "Incoming RADIUS packet did not have correct Message-Authenticator - dropped"); 1618 return RADIUS_RX_INVALID_AUTHENTICATOR; 1619 } 1620 1621 if (hdr->code != RADIUS_CODE_ACCESS_ACCEPT && 1622 hdr->code != RADIUS_CODE_ACCESS_REJECT && 1623 hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) { 1624 wpa_printf(MSG_INFO, "Unknown RADIUS message code"); 1625 return RADIUS_RX_UNKNOWN; 1626 } 1627 1628 sm->radius_identifier = -1; 1629 wpa_printf(MSG_DEBUG, "RADIUS packet matching with station " MACSTR, 1630 MAC2STR(sta->addr)); 1631 1632 radius_msg_free(sm->last_recv_radius); 1633 sm->last_recv_radius = msg; 1634 1635 session_timeout_set = 1636 !radius_msg_get_attr_int32(msg, RADIUS_ATTR_SESSION_TIMEOUT, 1637 &session_timeout); 1638 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_TERMINATION_ACTION, 1639 &termination_action)) 1640 termination_action = RADIUS_TERMINATION_ACTION_DEFAULT; 1641 1642 if (hapd->conf->acct_interim_interval == 0 && 1643 hdr->code == RADIUS_CODE_ACCESS_ACCEPT && 1644 radius_msg_get_attr_int32(msg, RADIUS_ATTR_ACCT_INTERIM_INTERVAL, 1645 &acct_interim_interval) == 0) { 1646 if (acct_interim_interval < 60) { 1647 hostapd_logger(hapd, sta->addr, 1648 HOSTAPD_MODULE_IEEE8021X, 1649 HOSTAPD_LEVEL_INFO, 1650 "ignored too small " 1651 "Acct-Interim-Interval %d", 1652 acct_interim_interval); 1653 } else 1654 sta->acct_interim_interval = acct_interim_interval; 1655 } 1656 1657 1658 switch (hdr->code) { 1659 case RADIUS_CODE_ACCESS_ACCEPT: 1660 if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED) 1661 sta->vlan_id = 0; 1662#ifndef CONFIG_NO_VLAN 1663 else { 1664 old_vlanid = sta->vlan_id; 1665 sta->vlan_id = radius_msg_get_vlanid(msg); 1666 } 1667 if (sta->vlan_id > 0 && 1668 hostapd_vlan_id_valid(hapd->conf->vlan, sta->vlan_id)) { 1669 hostapd_logger(hapd, sta->addr, 1670 HOSTAPD_MODULE_RADIUS, 1671 HOSTAPD_LEVEL_INFO, 1672 "VLAN ID %d", sta->vlan_id); 1673 } else if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_REQUIRED) { 1674 sta->eapol_sm->authFail = TRUE; 1675 hostapd_logger(hapd, sta->addr, 1676 HOSTAPD_MODULE_IEEE8021X, 1677 HOSTAPD_LEVEL_INFO, "authentication " 1678 "server did not include required VLAN " 1679 "ID in Access-Accept"); 1680 break; 1681 } 1682#endif /* CONFIG_NO_VLAN */ 1683 1684 if (ap_sta_bind_vlan(hapd, sta, old_vlanid) < 0) 1685 break; 1686 1687 sta->session_timeout_set = !!session_timeout_set; 1688 sta->session_timeout = session_timeout; 1689 1690 /* RFC 3580, Ch. 3.17 */ 1691 if (session_timeout_set && termination_action == 1692 RADIUS_TERMINATION_ACTION_RADIUS_REQUEST) { 1693 sm->reAuthPeriod = session_timeout; 1694 } else if (session_timeout_set) 1695 ap_sta_session_timeout(hapd, sta, session_timeout); 1696 1697 sm->eap_if->aaaSuccess = TRUE; 1698 override_eapReq = 1; 1699 ieee802_1x_get_keys(hapd, sta, msg, req, shared_secret, 1700 shared_secret_len); 1701 ieee802_1x_store_radius_class(hapd, sta, msg); 1702 ieee802_1x_update_sta_identity(hapd, sta, msg); 1703 ieee802_1x_update_sta_cui(hapd, sta, msg); 1704 ieee802_1x_check_hs20(hapd, sta, msg, 1705 session_timeout_set ? 1706 (int) session_timeout : -1); 1707 if (sm->eap_if->eapKeyAvailable && !sta->remediation && 1708 !sta->hs20_deauth_requested && 1709 wpa_auth_pmksa_add(sta->wpa_sm, sm->eapol_key_crypt, 1710 session_timeout_set ? 1711 (int) session_timeout : -1, sm) == 0) { 1712 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA, 1713 HOSTAPD_LEVEL_DEBUG, 1714 "Added PMKSA cache entry"); 1715 } 1716 break; 1717 case RADIUS_CODE_ACCESS_REJECT: 1718 sm->eap_if->aaaFail = TRUE; 1719 override_eapReq = 1; 1720 break; 1721 case RADIUS_CODE_ACCESS_CHALLENGE: 1722 sm->eap_if->aaaEapReq = TRUE; 1723 if (session_timeout_set) { 1724 /* RFC 2869, Ch. 2.3.2; RFC 3580, Ch. 3.17 */ 1725 sm->eap_if->aaaMethodTimeout = session_timeout; 1726 hostapd_logger(hapd, sm->addr, 1727 HOSTAPD_MODULE_IEEE8021X, 1728 HOSTAPD_LEVEL_DEBUG, 1729 "using EAP timeout of %d seconds (from " 1730 "RADIUS)", 1731 sm->eap_if->aaaMethodTimeout); 1732 } else { 1733 /* 1734 * Use dynamic retransmission behavior per EAP 1735 * specification. 1736 */ 1737 sm->eap_if->aaaMethodTimeout = 0; 1738 } 1739 break; 1740 } 1741 1742 ieee802_1x_decapsulate_radius(hapd, sta); 1743 if (override_eapReq) 1744 sm->eap_if->aaaEapReq = FALSE; 1745 1746 eapol_auth_step(sm); 1747 1748 return RADIUS_RX_QUEUED; 1749} 1750#endif /* CONFIG_NO_RADIUS */ 1751 1752 1753void ieee802_1x_abort_auth(struct hostapd_data *hapd, struct sta_info *sta) 1754{ 1755 struct eapol_state_machine *sm = sta->eapol_sm; 1756 if (sm == NULL) 1757 return; 1758 1759 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 1760 HOSTAPD_LEVEL_DEBUG, "aborting authentication"); 1761 1762#ifndef CONFIG_NO_RADIUS 1763 radius_msg_free(sm->last_recv_radius); 1764 sm->last_recv_radius = NULL; 1765#endif /* CONFIG_NO_RADIUS */ 1766 1767 if (sm->eap_if->eapTimeout) { 1768 /* 1769 * Disconnect the STA since it did not reply to the last EAP 1770 * request and we cannot continue EAP processing (EAP-Failure 1771 * could only be sent if the EAP peer actually replied). 1772 */ 1773 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "EAP Timeout, STA " MACSTR, 1774 MAC2STR(sta->addr)); 1775 1776 sm->eap_if->portEnabled = FALSE; 1777 ap_sta_disconnect(hapd, sta, sta->addr, 1778 WLAN_REASON_PREV_AUTH_NOT_VALID); 1779 } 1780} 1781 1782 1783static int ieee802_1x_rekey_broadcast(struct hostapd_data *hapd) 1784{ 1785 struct eapol_authenticator *eapol = hapd->eapol_auth; 1786 1787 if (hapd->conf->default_wep_key_len < 1) 1788 return 0; 1789 1790 os_free(eapol->default_wep_key); 1791 eapol->default_wep_key = os_malloc(hapd->conf->default_wep_key_len); 1792 if (eapol->default_wep_key == NULL || 1793 random_get_bytes(eapol->default_wep_key, 1794 hapd->conf->default_wep_key_len)) { 1795 wpa_printf(MSG_INFO, "Could not generate random WEP key"); 1796 os_free(eapol->default_wep_key); 1797 eapol->default_wep_key = NULL; 1798 return -1; 1799 } 1800 1801 wpa_hexdump_key(MSG_DEBUG, "IEEE 802.1X: New default WEP key", 1802 eapol->default_wep_key, 1803 hapd->conf->default_wep_key_len); 1804 1805 return 0; 1806} 1807 1808 1809static int ieee802_1x_sta_key_available(struct hostapd_data *hapd, 1810 struct sta_info *sta, void *ctx) 1811{ 1812 if (sta->eapol_sm) { 1813 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE; 1814 eapol_auth_step(sta->eapol_sm); 1815 } 1816 return 0; 1817} 1818 1819 1820static void ieee802_1x_rekey(void *eloop_ctx, void *timeout_ctx) 1821{ 1822 struct hostapd_data *hapd = eloop_ctx; 1823 struct eapol_authenticator *eapol = hapd->eapol_auth; 1824 1825 if (eapol->default_wep_key_idx >= 3) 1826 eapol->default_wep_key_idx = 1827 hapd->conf->individual_wep_key_len > 0 ? 1 : 0; 1828 else 1829 eapol->default_wep_key_idx++; 1830 1831 wpa_printf(MSG_DEBUG, "IEEE 802.1X: New default WEP key index %d", 1832 eapol->default_wep_key_idx); 1833 1834 if (ieee802_1x_rekey_broadcast(hapd)) { 1835 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X, 1836 HOSTAPD_LEVEL_WARNING, "failed to generate a " 1837 "new broadcast key"); 1838 os_free(eapol->default_wep_key); 1839 eapol->default_wep_key = NULL; 1840 return; 1841 } 1842 1843 /* TODO: Could setup key for RX here, but change default TX keyid only 1844 * after new broadcast key has been sent to all stations. */ 1845 if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP, 1846 broadcast_ether_addr, 1847 eapol->default_wep_key_idx, 1, NULL, 0, 1848 eapol->default_wep_key, 1849 hapd->conf->default_wep_key_len)) { 1850 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X, 1851 HOSTAPD_LEVEL_WARNING, "failed to configure a " 1852 "new broadcast key"); 1853 os_free(eapol->default_wep_key); 1854 eapol->default_wep_key = NULL; 1855 return; 1856 } 1857 1858 ap_for_each_sta(hapd, ieee802_1x_sta_key_available, NULL); 1859 1860 if (hapd->conf->wep_rekeying_period > 0) { 1861 eloop_register_timeout(hapd->conf->wep_rekeying_period, 0, 1862 ieee802_1x_rekey, hapd, NULL); 1863 } 1864} 1865 1866 1867static void ieee802_1x_eapol_send(void *ctx, void *sta_ctx, u8 type, 1868 const u8 *data, size_t datalen) 1869{ 1870#ifdef CONFIG_WPS 1871 struct sta_info *sta = sta_ctx; 1872 1873 if ((sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) == 1874 WLAN_STA_MAYBE_WPS) { 1875 const u8 *identity; 1876 size_t identity_len; 1877 struct eapol_state_machine *sm = sta->eapol_sm; 1878 1879 identity = eap_get_identity(sm->eap, &identity_len); 1880 if (identity && 1881 ((identity_len == WSC_ID_ENROLLEE_LEN && 1882 os_memcmp(identity, WSC_ID_ENROLLEE, 1883 WSC_ID_ENROLLEE_LEN) == 0) || 1884 (identity_len == WSC_ID_REGISTRAR_LEN && 1885 os_memcmp(identity, WSC_ID_REGISTRAR, 1886 WSC_ID_REGISTRAR_LEN) == 0))) { 1887 wpa_printf(MSG_DEBUG, "WPS: WLAN_STA_MAYBE_WPS -> " 1888 "WLAN_STA_WPS"); 1889 sta->flags |= WLAN_STA_WPS; 1890 } 1891 } 1892#endif /* CONFIG_WPS */ 1893 1894 ieee802_1x_send(ctx, sta_ctx, type, data, datalen); 1895} 1896 1897 1898static void ieee802_1x_aaa_send(void *ctx, void *sta_ctx, 1899 const u8 *data, size_t datalen) 1900{ 1901#ifndef CONFIG_NO_RADIUS 1902 struct hostapd_data *hapd = ctx; 1903 struct sta_info *sta = sta_ctx; 1904 1905 ieee802_1x_encapsulate_radius(hapd, sta, data, datalen); 1906#endif /* CONFIG_NO_RADIUS */ 1907} 1908 1909 1910static void _ieee802_1x_finished(void *ctx, void *sta_ctx, int success, 1911 int preauth, int remediation) 1912{ 1913 struct hostapd_data *hapd = ctx; 1914 struct sta_info *sta = sta_ctx; 1915 if (preauth) 1916 rsn_preauth_finished(hapd, sta, success); 1917 else 1918 ieee802_1x_finished(hapd, sta, success, remediation); 1919} 1920 1921 1922static int ieee802_1x_get_eap_user(void *ctx, const u8 *identity, 1923 size_t identity_len, int phase2, 1924 struct eap_user *user) 1925{ 1926 struct hostapd_data *hapd = ctx; 1927 const struct hostapd_eap_user *eap_user; 1928 int i; 1929 1930 eap_user = hostapd_get_eap_user(hapd, identity, identity_len, phase2); 1931 if (eap_user == NULL) 1932 return -1; 1933 1934 os_memset(user, 0, sizeof(*user)); 1935 user->phase2 = phase2; 1936 for (i = 0; i < EAP_MAX_METHODS; i++) { 1937 user->methods[i].vendor = eap_user->methods[i].vendor; 1938 user->methods[i].method = eap_user->methods[i].method; 1939 } 1940 1941 if (eap_user->password) { 1942 user->password = os_malloc(eap_user->password_len); 1943 if (user->password == NULL) 1944 return -1; 1945 os_memcpy(user->password, eap_user->password, 1946 eap_user->password_len); 1947 user->password_len = eap_user->password_len; 1948 user->password_hash = eap_user->password_hash; 1949 } 1950 user->force_version = eap_user->force_version; 1951 user->macacl = eap_user->macacl; 1952 user->ttls_auth = eap_user->ttls_auth; 1953 user->remediation = eap_user->remediation; 1954 1955 return 0; 1956} 1957 1958 1959static int ieee802_1x_sta_entry_alive(void *ctx, const u8 *addr) 1960{ 1961 struct hostapd_data *hapd = ctx; 1962 struct sta_info *sta; 1963 sta = ap_get_sta(hapd, addr); 1964 if (sta == NULL || sta->eapol_sm == NULL) 1965 return 0; 1966 return 1; 1967} 1968 1969 1970static void ieee802_1x_logger(void *ctx, const u8 *addr, 1971 eapol_logger_level level, const char *txt) 1972{ 1973#ifndef CONFIG_NO_HOSTAPD_LOGGER 1974 struct hostapd_data *hapd = ctx; 1975 int hlevel; 1976 1977 switch (level) { 1978 case EAPOL_LOGGER_WARNING: 1979 hlevel = HOSTAPD_LEVEL_WARNING; 1980 break; 1981 case EAPOL_LOGGER_INFO: 1982 hlevel = HOSTAPD_LEVEL_INFO; 1983 break; 1984 case EAPOL_LOGGER_DEBUG: 1985 default: 1986 hlevel = HOSTAPD_LEVEL_DEBUG; 1987 break; 1988 } 1989 1990 hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE8021X, hlevel, "%s", 1991 txt); 1992#endif /* CONFIG_NO_HOSTAPD_LOGGER */ 1993} 1994 1995 1996static void ieee802_1x_set_port_authorized(void *ctx, void *sta_ctx, 1997 int authorized) 1998{ 1999 struct hostapd_data *hapd = ctx; 2000 struct sta_info *sta = sta_ctx; 2001 ieee802_1x_set_sta_authorized(hapd, sta, authorized); 2002} 2003 2004 2005static void _ieee802_1x_abort_auth(void *ctx, void *sta_ctx) 2006{ 2007 struct hostapd_data *hapd = ctx; 2008 struct sta_info *sta = sta_ctx; 2009 ieee802_1x_abort_auth(hapd, sta); 2010} 2011 2012 2013static void _ieee802_1x_tx_key(void *ctx, void *sta_ctx) 2014{ 2015 struct hostapd_data *hapd = ctx; 2016 struct sta_info *sta = sta_ctx; 2017 ieee802_1x_tx_key(hapd, sta); 2018} 2019 2020 2021static void ieee802_1x_eapol_event(void *ctx, void *sta_ctx, 2022 enum eapol_event type) 2023{ 2024 /* struct hostapd_data *hapd = ctx; */ 2025 struct sta_info *sta = sta_ctx; 2026 switch (type) { 2027 case EAPOL_AUTH_SM_CHANGE: 2028 wpa_auth_sm_notify(sta->wpa_sm); 2029 break; 2030 case EAPOL_AUTH_REAUTHENTICATE: 2031 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL); 2032 break; 2033 } 2034} 2035 2036 2037#ifdef CONFIG_ERP 2038 2039static struct eap_server_erp_key * 2040ieee802_1x_erp_get_key(void *ctx, const char *keyname) 2041{ 2042 struct hostapd_data *hapd = ctx; 2043 struct eap_server_erp_key *erp; 2044 2045 dl_list_for_each(erp, &hapd->erp_keys, struct eap_server_erp_key, 2046 list) { 2047 if (os_strcmp(erp->keyname_nai, keyname) == 0) 2048 return erp; 2049 } 2050 2051 return NULL; 2052} 2053 2054 2055static int ieee802_1x_erp_add_key(void *ctx, struct eap_server_erp_key *erp) 2056{ 2057 struct hostapd_data *hapd = ctx; 2058 2059 dl_list_add(&hapd->erp_keys, &erp->list); 2060 return 0; 2061} 2062 2063#endif /* CONFIG_ERP */ 2064 2065 2066int ieee802_1x_init(struct hostapd_data *hapd) 2067{ 2068 int i; 2069 struct eapol_auth_config conf; 2070 struct eapol_auth_cb cb; 2071 2072 dl_list_init(&hapd->erp_keys); 2073 2074 os_memset(&conf, 0, sizeof(conf)); 2075 conf.ctx = hapd; 2076 conf.eap_reauth_period = hapd->conf->eap_reauth_period; 2077 conf.wpa = hapd->conf->wpa; 2078 conf.individual_wep_key_len = hapd->conf->individual_wep_key_len; 2079 conf.eap_server = hapd->conf->eap_server; 2080 conf.ssl_ctx = hapd->ssl_ctx; 2081 conf.msg_ctx = hapd->msg_ctx; 2082 conf.eap_sim_db_priv = hapd->eap_sim_db_priv; 2083 conf.eap_req_id_text = hapd->conf->eap_req_id_text; 2084 conf.eap_req_id_text_len = hapd->conf->eap_req_id_text_len; 2085 conf.erp_send_reauth_start = hapd->conf->erp_send_reauth_start; 2086 conf.erp_domain = hapd->conf->erp_domain; 2087 conf.erp = hapd->conf->eap_server_erp; 2088 conf.pac_opaque_encr_key = hapd->conf->pac_opaque_encr_key; 2089 conf.eap_fast_a_id = hapd->conf->eap_fast_a_id; 2090 conf.eap_fast_a_id_len = hapd->conf->eap_fast_a_id_len; 2091 conf.eap_fast_a_id_info = hapd->conf->eap_fast_a_id_info; 2092 conf.eap_fast_prov = hapd->conf->eap_fast_prov; 2093 conf.pac_key_lifetime = hapd->conf->pac_key_lifetime; 2094 conf.pac_key_refresh_time = hapd->conf->pac_key_refresh_time; 2095 conf.eap_sim_aka_result_ind = hapd->conf->eap_sim_aka_result_ind; 2096 conf.tnc = hapd->conf->tnc; 2097 conf.wps = hapd->wps; 2098 conf.fragment_size = hapd->conf->fragment_size; 2099 conf.pwd_group = hapd->conf->pwd_group; 2100 conf.pbc_in_m1 = hapd->conf->pbc_in_m1; 2101 if (hapd->conf->server_id) { 2102 conf.server_id = (const u8 *) hapd->conf->server_id; 2103 conf.server_id_len = os_strlen(hapd->conf->server_id); 2104 } else { 2105 conf.server_id = (const u8 *) "hostapd"; 2106 conf.server_id_len = 7; 2107 } 2108 2109 os_memset(&cb, 0, sizeof(cb)); 2110 cb.eapol_send = ieee802_1x_eapol_send; 2111 cb.aaa_send = ieee802_1x_aaa_send; 2112 cb.finished = _ieee802_1x_finished; 2113 cb.get_eap_user = ieee802_1x_get_eap_user; 2114 cb.sta_entry_alive = ieee802_1x_sta_entry_alive; 2115 cb.logger = ieee802_1x_logger; 2116 cb.set_port_authorized = ieee802_1x_set_port_authorized; 2117 cb.abort_auth = _ieee802_1x_abort_auth; 2118 cb.tx_key = _ieee802_1x_tx_key; 2119 cb.eapol_event = ieee802_1x_eapol_event; 2120#ifdef CONFIG_ERP 2121 cb.erp_get_key = ieee802_1x_erp_get_key; 2122 cb.erp_add_key = ieee802_1x_erp_add_key; 2123#endif /* CONFIG_ERP */ 2124 2125 hapd->eapol_auth = eapol_auth_init(&conf, &cb); 2126 if (hapd->eapol_auth == NULL) 2127 return -1; 2128 2129 if ((hapd->conf->ieee802_1x || hapd->conf->wpa) && 2130 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1)) 2131 return -1; 2132 2133#ifndef CONFIG_NO_RADIUS 2134 if (radius_client_register(hapd->radius, RADIUS_AUTH, 2135 ieee802_1x_receive_auth, hapd)) 2136 return -1; 2137#endif /* CONFIG_NO_RADIUS */ 2138 2139 if (hapd->conf->default_wep_key_len) { 2140 for (i = 0; i < 4; i++) 2141 hostapd_drv_set_key(hapd->conf->iface, hapd, 2142 WPA_ALG_NONE, NULL, i, 0, NULL, 0, 2143 NULL, 0); 2144 2145 ieee802_1x_rekey(hapd, NULL); 2146 2147 if (hapd->eapol_auth->default_wep_key == NULL) 2148 return -1; 2149 } 2150 2151 return 0; 2152} 2153 2154 2155void ieee802_1x_erp_flush(struct hostapd_data *hapd) 2156{ 2157 struct eap_server_erp_key *erp; 2158 2159 while ((erp = dl_list_first(&hapd->erp_keys, struct eap_server_erp_key, 2160 list)) != NULL) { 2161 dl_list_del(&erp->list); 2162 bin_clear_free(erp, sizeof(*erp)); 2163 } 2164} 2165 2166 2167void ieee802_1x_deinit(struct hostapd_data *hapd) 2168{ 2169 eloop_cancel_timeout(ieee802_1x_rekey, hapd, NULL); 2170 2171 if (hapd->driver != NULL && 2172 (hapd->conf->ieee802_1x || hapd->conf->wpa)) 2173 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0); 2174 2175 eapol_auth_deinit(hapd->eapol_auth); 2176 hapd->eapol_auth = NULL; 2177 2178 ieee802_1x_erp_flush(hapd); 2179} 2180 2181 2182int ieee802_1x_tx_status(struct hostapd_data *hapd, struct sta_info *sta, 2183 const u8 *buf, size_t len, int ack) 2184{ 2185 struct ieee80211_hdr *hdr; 2186 u8 *pos; 2187 const unsigned char rfc1042_hdr[ETH_ALEN] = 2188 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 2189 2190 if (sta == NULL) 2191 return -1; 2192 if (len < sizeof(*hdr) + sizeof(rfc1042_hdr) + 2) 2193 return 0; 2194 2195 hdr = (struct ieee80211_hdr *) buf; 2196 pos = (u8 *) (hdr + 1); 2197 if (os_memcmp(pos, rfc1042_hdr, sizeof(rfc1042_hdr)) != 0) 2198 return 0; 2199 pos += sizeof(rfc1042_hdr); 2200 if (WPA_GET_BE16(pos) != ETH_P_PAE) 2201 return 0; 2202 pos += 2; 2203 2204 return ieee802_1x_eapol_tx_status(hapd, sta, pos, buf + len - pos, 2205 ack); 2206} 2207 2208 2209int ieee802_1x_eapol_tx_status(struct hostapd_data *hapd, struct sta_info *sta, 2210 const u8 *buf, int len, int ack) 2211{ 2212 const struct ieee802_1x_hdr *xhdr = 2213 (const struct ieee802_1x_hdr *) buf; 2214 const u8 *pos = buf + sizeof(*xhdr); 2215 struct ieee802_1x_eapol_key *key; 2216 2217 if (len < (int) sizeof(*xhdr)) 2218 return 0; 2219 wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR " TX status - version=%d " 2220 "type=%d length=%d - ack=%d", 2221 MAC2STR(sta->addr), xhdr->version, xhdr->type, 2222 be_to_host16(xhdr->length), ack); 2223 2224 if (xhdr->type != IEEE802_1X_TYPE_EAPOL_KEY) 2225 return 0; 2226 2227 if (pos + sizeof(struct wpa_eapol_key) <= buf + len) { 2228 const struct wpa_eapol_key *wpa; 2229 wpa = (const struct wpa_eapol_key *) pos; 2230 if (wpa->type == EAPOL_KEY_TYPE_RSN || 2231 wpa->type == EAPOL_KEY_TYPE_WPA) 2232 wpa_auth_eapol_key_tx_status(hapd->wpa_auth, 2233 sta->wpa_sm, ack); 2234 } 2235 2236 /* EAPOL EAP-Packet packets are eventually re-sent by either Supplicant 2237 * or Authenticator state machines, but EAPOL-Key packets are not 2238 * retransmitted in case of failure. Try to re-send failed EAPOL-Key 2239 * packets couple of times because otherwise STA keys become 2240 * unsynchronized with AP. */ 2241 if (!ack && pos + sizeof(*key) <= buf + len) { 2242 key = (struct ieee802_1x_eapol_key *) pos; 2243 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 2244 HOSTAPD_LEVEL_DEBUG, "did not Ack EAPOL-Key " 2245 "frame (%scast index=%d)", 2246 key->key_index & BIT(7) ? "uni" : "broad", 2247 key->key_index & ~BIT(7)); 2248 /* TODO: re-send EAPOL-Key couple of times (with short delay 2249 * between them?). If all attempt fail, report error and 2250 * deauthenticate STA so that it will get new keys when 2251 * authenticating again (e.g., after returning in range). 2252 * Separate limit/transmit state needed both for unicast and 2253 * broadcast keys(?) */ 2254 } 2255 /* TODO: could move unicast key configuration from ieee802_1x_tx_key() 2256 * to here and change the key only if the EAPOL-Key packet was Acked. 2257 */ 2258 2259 return 1; 2260} 2261 2262 2263u8 * ieee802_1x_get_identity(struct eapol_state_machine *sm, size_t *len) 2264{ 2265 if (sm == NULL || sm->identity == NULL) 2266 return NULL; 2267 2268 *len = sm->identity_len; 2269 return sm->identity; 2270} 2271 2272 2273u8 * ieee802_1x_get_radius_class(struct eapol_state_machine *sm, size_t *len, 2274 int idx) 2275{ 2276 if (sm == NULL || sm->radius_class.attr == NULL || 2277 idx >= (int) sm->radius_class.count) 2278 return NULL; 2279 2280 *len = sm->radius_class.attr[idx].len; 2281 return sm->radius_class.attr[idx].data; 2282} 2283 2284 2285struct wpabuf * ieee802_1x_get_radius_cui(struct eapol_state_machine *sm) 2286{ 2287 if (sm == NULL) 2288 return NULL; 2289 return sm->radius_cui; 2290} 2291 2292 2293const u8 * ieee802_1x_get_key(struct eapol_state_machine *sm, size_t *len) 2294{ 2295 *len = 0; 2296 if (sm == NULL) 2297 return NULL; 2298 2299 *len = sm->eap_if->eapKeyDataLen; 2300 return sm->eap_if->eapKeyData; 2301} 2302 2303 2304void ieee802_1x_notify_port_enabled(struct eapol_state_machine *sm, 2305 int enabled) 2306{ 2307 if (sm == NULL) 2308 return; 2309 sm->eap_if->portEnabled = enabled ? TRUE : FALSE; 2310 eapol_auth_step(sm); 2311} 2312 2313 2314void ieee802_1x_notify_port_valid(struct eapol_state_machine *sm, 2315 int valid) 2316{ 2317 if (sm == NULL) 2318 return; 2319 sm->portValid = valid ? TRUE : FALSE; 2320 eapol_auth_step(sm); 2321} 2322 2323 2324void ieee802_1x_notify_pre_auth(struct eapol_state_machine *sm, int pre_auth) 2325{ 2326 if (sm == NULL) 2327 return; 2328 if (pre_auth) 2329 sm->flags |= EAPOL_SM_PREAUTH; 2330 else 2331 sm->flags &= ~EAPOL_SM_PREAUTH; 2332} 2333 2334 2335static const char * bool_txt(Boolean bool) 2336{ 2337 return bool ? "TRUE" : "FALSE"; 2338} 2339 2340 2341int ieee802_1x_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen) 2342{ 2343 /* TODO */ 2344 return 0; 2345} 2346 2347 2348int ieee802_1x_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta, 2349 char *buf, size_t buflen) 2350{ 2351 int len = 0, ret; 2352 struct eapol_state_machine *sm = sta->eapol_sm; 2353 struct os_reltime diff; 2354 const char *name1; 2355 const char *name2; 2356 2357 if (sm == NULL) 2358 return 0; 2359 2360 ret = os_snprintf(buf + len, buflen - len, 2361 "dot1xPaePortNumber=%d\n" 2362 "dot1xPaePortProtocolVersion=%d\n" 2363 "dot1xPaePortCapabilities=1\n" 2364 "dot1xPaePortInitialize=%d\n" 2365 "dot1xPaePortReauthenticate=FALSE\n", 2366 sta->aid, 2367 EAPOL_VERSION, 2368 sm->initialize); 2369 if (os_snprintf_error(buflen - len, ret)) 2370 return len; 2371 len += ret; 2372 2373 /* dot1xAuthConfigTable */ 2374 ret = os_snprintf(buf + len, buflen - len, 2375 "dot1xAuthPaeState=%d\n" 2376 "dot1xAuthBackendAuthState=%d\n" 2377 "dot1xAuthAdminControlledDirections=%d\n" 2378 "dot1xAuthOperControlledDirections=%d\n" 2379 "dot1xAuthAuthControlledPortStatus=%d\n" 2380 "dot1xAuthAuthControlledPortControl=%d\n" 2381 "dot1xAuthQuietPeriod=%u\n" 2382 "dot1xAuthServerTimeout=%u\n" 2383 "dot1xAuthReAuthPeriod=%u\n" 2384 "dot1xAuthReAuthEnabled=%s\n" 2385 "dot1xAuthKeyTxEnabled=%s\n", 2386 sm->auth_pae_state + 1, 2387 sm->be_auth_state + 1, 2388 sm->adminControlledDirections, 2389 sm->operControlledDirections, 2390 sm->authPortStatus, 2391 sm->portControl, 2392 sm->quietPeriod, 2393 sm->serverTimeout, 2394 sm->reAuthPeriod, 2395 bool_txt(sm->reAuthEnabled), 2396 bool_txt(sm->keyTxEnabled)); 2397 if (os_snprintf_error(buflen - len, ret)) 2398 return len; 2399 len += ret; 2400 2401 /* dot1xAuthStatsTable */ 2402 ret = os_snprintf(buf + len, buflen - len, 2403 "dot1xAuthEapolFramesRx=%u\n" 2404 "dot1xAuthEapolFramesTx=%u\n" 2405 "dot1xAuthEapolStartFramesRx=%u\n" 2406 "dot1xAuthEapolLogoffFramesRx=%u\n" 2407 "dot1xAuthEapolRespIdFramesRx=%u\n" 2408 "dot1xAuthEapolRespFramesRx=%u\n" 2409 "dot1xAuthEapolReqIdFramesTx=%u\n" 2410 "dot1xAuthEapolReqFramesTx=%u\n" 2411 "dot1xAuthInvalidEapolFramesRx=%u\n" 2412 "dot1xAuthEapLengthErrorFramesRx=%u\n" 2413 "dot1xAuthLastEapolFrameVersion=%u\n" 2414 "dot1xAuthLastEapolFrameSource=" MACSTR "\n", 2415 sm->dot1xAuthEapolFramesRx, 2416 sm->dot1xAuthEapolFramesTx, 2417 sm->dot1xAuthEapolStartFramesRx, 2418 sm->dot1xAuthEapolLogoffFramesRx, 2419 sm->dot1xAuthEapolRespIdFramesRx, 2420 sm->dot1xAuthEapolRespFramesRx, 2421 sm->dot1xAuthEapolReqIdFramesTx, 2422 sm->dot1xAuthEapolReqFramesTx, 2423 sm->dot1xAuthInvalidEapolFramesRx, 2424 sm->dot1xAuthEapLengthErrorFramesRx, 2425 sm->dot1xAuthLastEapolFrameVersion, 2426 MAC2STR(sm->addr)); 2427 if (os_snprintf_error(buflen - len, ret)) 2428 return len; 2429 len += ret; 2430 2431 /* dot1xAuthDiagTable */ 2432 ret = os_snprintf(buf + len, buflen - len, 2433 "dot1xAuthEntersConnecting=%u\n" 2434 "dot1xAuthEapLogoffsWhileConnecting=%u\n" 2435 "dot1xAuthEntersAuthenticating=%u\n" 2436 "dot1xAuthAuthSuccessesWhileAuthenticating=%u\n" 2437 "dot1xAuthAuthTimeoutsWhileAuthenticating=%u\n" 2438 "dot1xAuthAuthFailWhileAuthenticating=%u\n" 2439 "dot1xAuthAuthEapStartsWhileAuthenticating=%u\n" 2440 "dot1xAuthAuthEapLogoffWhileAuthenticating=%u\n" 2441 "dot1xAuthAuthReauthsWhileAuthenticated=%u\n" 2442 "dot1xAuthAuthEapStartsWhileAuthenticated=%u\n" 2443 "dot1xAuthAuthEapLogoffWhileAuthenticated=%u\n" 2444 "dot1xAuthBackendResponses=%u\n" 2445 "dot1xAuthBackendAccessChallenges=%u\n" 2446 "dot1xAuthBackendOtherRequestsToSupplicant=%u\n" 2447 "dot1xAuthBackendAuthSuccesses=%u\n" 2448 "dot1xAuthBackendAuthFails=%u\n", 2449 sm->authEntersConnecting, 2450 sm->authEapLogoffsWhileConnecting, 2451 sm->authEntersAuthenticating, 2452 sm->authAuthSuccessesWhileAuthenticating, 2453 sm->authAuthTimeoutsWhileAuthenticating, 2454 sm->authAuthFailWhileAuthenticating, 2455 sm->authAuthEapStartsWhileAuthenticating, 2456 sm->authAuthEapLogoffWhileAuthenticating, 2457 sm->authAuthReauthsWhileAuthenticated, 2458 sm->authAuthEapStartsWhileAuthenticated, 2459 sm->authAuthEapLogoffWhileAuthenticated, 2460 sm->backendResponses, 2461 sm->backendAccessChallenges, 2462 sm->backendOtherRequestsToSupplicant, 2463 sm->backendAuthSuccesses, 2464 sm->backendAuthFails); 2465 if (os_snprintf_error(buflen - len, ret)) 2466 return len; 2467 len += ret; 2468 2469 /* dot1xAuthSessionStatsTable */ 2470 os_reltime_age(&sta->acct_session_start, &diff); 2471 ret = os_snprintf(buf + len, buflen - len, 2472 /* TODO: dot1xAuthSessionOctetsRx */ 2473 /* TODO: dot1xAuthSessionOctetsTx */ 2474 /* TODO: dot1xAuthSessionFramesRx */ 2475 /* TODO: dot1xAuthSessionFramesTx */ 2476 "dot1xAuthSessionId=%08X-%08X\n" 2477 "dot1xAuthSessionAuthenticMethod=%d\n" 2478 "dot1xAuthSessionTime=%u\n" 2479 "dot1xAuthSessionTerminateCause=999\n" 2480 "dot1xAuthSessionUserName=%s\n", 2481 sta->acct_session_id_hi, sta->acct_session_id_lo, 2482 (wpa_key_mgmt_wpa_ieee8021x( 2483 wpa_auth_sta_key_mgmt(sta->wpa_sm))) ? 2484 1 : 2, 2485 (unsigned int) diff.sec, 2486 sm->identity); 2487 if (os_snprintf_error(buflen - len, ret)) 2488 return len; 2489 len += ret; 2490 2491 if (sm->acct_multi_session_id_hi) { 2492 ret = os_snprintf(buf + len, buflen - len, 2493 "authMultiSessionId=%08X+%08X\n", 2494 sm->acct_multi_session_id_hi, 2495 sm->acct_multi_session_id_lo); 2496 if (os_snprintf_error(buflen - len, ret)) 2497 return len; 2498 len += ret; 2499 } 2500 2501 name1 = eap_server_get_name(0, sm->eap_type_authsrv); 2502 name2 = eap_server_get_name(0, sm->eap_type_supp); 2503 ret = os_snprintf(buf + len, buflen - len, 2504 "last_eap_type_as=%d (%s)\n" 2505 "last_eap_type_sta=%d (%s)\n", 2506 sm->eap_type_authsrv, name1, 2507 sm->eap_type_supp, name2); 2508 if (os_snprintf_error(buflen - len, ret)) 2509 return len; 2510 len += ret; 2511 2512 return len; 2513} 2514 2515 2516static void ieee802_1x_finished(struct hostapd_data *hapd, 2517 struct sta_info *sta, int success, 2518 int remediation) 2519{ 2520 const u8 *key; 2521 size_t len; 2522 /* TODO: get PMKLifetime from WPA parameters */ 2523 static const int dot11RSNAConfigPMKLifetime = 43200; 2524 unsigned int session_timeout; 2525 2526#ifdef CONFIG_HS20 2527 if (remediation && !sta->remediation) { 2528 sta->remediation = 1; 2529 os_free(sta->remediation_url); 2530 sta->remediation_url = 2531 os_strdup(hapd->conf->subscr_remediation_url); 2532 sta->remediation_method = 1; /* SOAP-XML SPP */ 2533 } 2534 2535 if (success) { 2536 if (sta->remediation) { 2537 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification " 2538 "to " MACSTR " to indicate Subscription " 2539 "Remediation", 2540 MAC2STR(sta->addr)); 2541 hs20_send_wnm_notification(hapd, sta->addr, 2542 sta->remediation_method, 2543 sta->remediation_url); 2544 os_free(sta->remediation_url); 2545 sta->remediation_url = NULL; 2546 } 2547 2548 if (sta->hs20_deauth_req) { 2549 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification " 2550 "to " MACSTR " to indicate imminent " 2551 "deauthentication", MAC2STR(sta->addr)); 2552 hs20_send_wnm_notification_deauth_req( 2553 hapd, sta->addr, sta->hs20_deauth_req); 2554 } 2555 } 2556#endif /* CONFIG_HS20 */ 2557 2558 key = ieee802_1x_get_key(sta->eapol_sm, &len); 2559 if (sta->session_timeout_set) 2560 session_timeout = sta->session_timeout; 2561 else 2562 session_timeout = dot11RSNAConfigPMKLifetime; 2563 if (success && key && len >= PMK_LEN && !sta->remediation && 2564 !sta->hs20_deauth_requested && 2565 wpa_auth_pmksa_add(sta->wpa_sm, key, session_timeout, 2566 sta->eapol_sm) == 0) { 2567 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA, 2568 HOSTAPD_LEVEL_DEBUG, 2569 "Added PMKSA cache entry (IEEE 802.1X)"); 2570 } 2571 2572 if (!success) { 2573 /* 2574 * Many devices require deauthentication after WPS provisioning 2575 * and some may not be be able to do that themselves, so 2576 * disconnect the client here. In addition, this may also 2577 * benefit IEEE 802.1X/EAPOL authentication cases, too since 2578 * the EAPOL PAE state machine would remain in HELD state for 2579 * considerable amount of time and some EAP methods, like 2580 * EAP-FAST with anonymous provisioning, may require another 2581 * EAPOL authentication to be started to complete connection. 2582 */ 2583 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "IEEE 802.1X: Force " 2584 "disconnection after EAP-Failure"); 2585 /* Add a small sleep to increase likelihood of previously 2586 * requested EAP-Failure TX getting out before this should the 2587 * driver reorder operations. 2588 */ 2589 os_sleep(0, 10000); 2590 ap_sta_disconnect(hapd, sta, sta->addr, 2591 WLAN_REASON_IEEE_802_1X_AUTH_FAILED); 2592 hostapd_wps_eap_completed(hapd); 2593 } 2594} 2595