ieee802_1x.c revision cce06667447b5aec83452adb0c15100ada531095
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * hostapd / IEEE 802.1X-2004 Authenticator 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Copyright (c) 2002-2012, Jouni Malinen <j@w1.fi> 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * This software may be distributed under the terms of the BSD license. 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * See README for more details. 7a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) */ 890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 903b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)#include "utils/includes.h" 1090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 11a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles)#include "utils/common.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "utils/eloop.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "crypto/md5.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "crypto/crypto.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "crypto/random.h" 1690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#include "common/ieee802_11_defs.h" 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "radius/radius.h" 185d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include "radius/radius_client.h" 1990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#include "eap_server/eap.h" 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "eap_common/eap_wsc_common.h" 2190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#include "eapol_auth/eapol_auth_sm.h" 225d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include "eapol_auth/eapol_auth_sm_i.h" 2390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#include "p2p/p2p.h" 2490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#include "hostapd.h" 2590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#include "accounting.h" 2690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#include "sta_info.h" 275d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include "wpa_auth.h" 285d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include "preauth_auth.h" 2990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#include "pmksa_cache_auth.h" 3090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#include "ap_config.h" 3190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#include "ap_drv_ops.h" 3290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#include "ieee802_1x.h" 3390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 3490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 3590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)static void ieee802_1x_finished(struct hostapd_data *hapd, 3690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) struct sta_info *sta, int success); 3790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 3890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 3990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)static void ieee802_1x_send(struct hostapd_data *hapd, struct sta_info *sta, 4090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) u8 type, const u8 *data, size_t datalen) 4190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles){ 4290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) u8 *buf; 4390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) struct ieee802_1x_hdr *xhdr; 4490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) size_t len; 4590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) int encrypt = 0; 4690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 4790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) len = sizeof(*xhdr) + datalen; 4890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) buf = os_zalloc(len); 4990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) if (buf == NULL) { 5090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) wpa_printf(MSG_ERROR, "malloc() failed for " 5190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) "ieee802_1x_send(len=%lu)", 5290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) (unsigned long) len); 5390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) return; 5490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) } 5590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 5690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) xhdr = (struct ieee802_1x_hdr *) buf; 5790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) xhdr->version = hapd->conf->eapol_version; 5890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) xhdr->type = type; 5990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) xhdr->length = host_to_be16(datalen); 6090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 6190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) if (datalen > 0 && data != NULL) 6290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) os_memcpy(xhdr + 1, data, datalen); 6390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 6490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) if (wpa_auth_pairwise_set(sta->wpa_sm)) 6590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) encrypt = 1; 6690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) if (sta->flags & WLAN_STA_PREAUTH) { 6790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) rsn_preauth_send(hapd, sta, buf, len); 6890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) } else { 6990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) hostapd_drv_hapd_send_eapol( 705f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) hapd, sta->addr, buf, len, 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) encrypt, hostapd_sta_flags_to_drv(sta->flags)); 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) os_free(buf); 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)void ieee802_1x_set_sta_authorized(struct hostapd_data *hapd, 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct sta_info *sta, int authorized) 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 8190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) int res; 8290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (sta->flags & WLAN_STA_PREAUTH) 84a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) return; 8590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 8690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) if (authorized) { 87a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) ap_sta_set_authorized(hapd, sta, 1); 88a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) res = hostapd_set_authorized(hapd, sta, 1); 89a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 90a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) HOSTAPD_LEVEL_DEBUG, "authorizing port"); 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ap_sta_set_authorized(hapd, sta, 0); 93b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) res = hostapd_set_authorized(hapd, sta, 0); 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HOSTAPD_LEVEL_DEBUG, "unauthorizing port"); 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 97a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) 9890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) if (res && errno != ENOENT) { 99a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) wpa_printf(MSG_DEBUG, "Could not set station " MACSTR 100effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch " flags for kernel driver (errno=%d).", 101effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch MAC2STR(sta->addr), errno); 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) if (authorized) { 1055d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) os_get_time(&sta->connected_time); 10690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) accounting_sta_start(hapd, sta); 10790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) } 10890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)} 10990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 1105d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 11190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)static void ieee802_1x_tx_key_one(struct hostapd_data *hapd, 11290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) struct sta_info *sta, 11390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) int idx, int broadcast, 11490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) u8 *key_data, size_t key_len) 11590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles){ 11690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) u8 *buf, *ekey; 11790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) struct ieee802_1x_hdr *hdr; 11890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) struct ieee802_1x_eapol_key *key; 11990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) size_t len, ekey_len; 12090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) struct eapol_state_machine *sm = sta->eapol_sm; 12190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 12290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) if (sm == NULL) 12390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) return; 12490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 12590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) len = sizeof(*key) + key_len; 12690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) buf = os_zalloc(sizeof(*hdr) + len); 12790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) if (buf == NULL) 12890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) return; 12990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 13090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) hdr = (struct ieee802_1x_hdr *) buf; 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) key = (struct ieee802_1x_eapol_key *) (hdr + 1); 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) key->type = EAPOL_KEY_TYPE_RC4; 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WPA_PUT_BE16(key->key_length, key_len); 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) wpa_get_ntp_timestamp(key->replay_counter); 13590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (random_get_bytes(key->key_iv, sizeof(key->key_iv))) { 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) wpa_printf(MSG_ERROR, "Could not get random numbers"); 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) os_free(buf); 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) key->key_index = idx | (broadcast ? 0 : BIT(7)); 14390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) if (hapd->conf->eapol_key_index_workaround) { 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* According to some information, WinXP Supplicant seems to 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * interpret bit7 as an indication whether the key is to be 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * activated, so make it possible to enable workaround that 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * sets this bit for all keys. */ 148 key->key_index |= BIT(7); 149 } 150 151 /* Key is encrypted using "Key-IV + MSK[0..31]" as the RC4-key and 152 * MSK[32..63] is used to sign the message. */ 153 if (sm->eap_if->eapKeyData == NULL || sm->eap_if->eapKeyDataLen < 64) { 154 wpa_printf(MSG_ERROR, "No eapKeyData available for encrypting " 155 "and signing EAPOL-Key"); 156 os_free(buf); 157 return; 158 } 159 os_memcpy((u8 *) (key + 1), key_data, key_len); 160 ekey_len = sizeof(key->key_iv) + 32; 161 ekey = os_malloc(ekey_len); 162 if (ekey == NULL) { 163 wpa_printf(MSG_ERROR, "Could not encrypt key"); 164 os_free(buf); 165 return; 166 } 167 os_memcpy(ekey, key->key_iv, sizeof(key->key_iv)); 168 os_memcpy(ekey + sizeof(key->key_iv), sm->eap_if->eapKeyData, 32); 169 rc4_skip(ekey, ekey_len, 0, (u8 *) (key + 1), key_len); 170 os_free(ekey); 171 172 /* This header is needed here for HMAC-MD5, but it will be regenerated 173 * in ieee802_1x_send() */ 174 hdr->version = hapd->conf->eapol_version; 175 hdr->type = IEEE802_1X_TYPE_EAPOL_KEY; 176 hdr->length = host_to_be16(len); 177 hmac_md5(sm->eap_if->eapKeyData + 32, 32, buf, sizeof(*hdr) + len, 178 key->key_signature); 179 180 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key to " MACSTR 181 " (%s index=%d)", MAC2STR(sm->addr), 182 broadcast ? "broadcast" : "unicast", idx); 183 ieee802_1x_send(hapd, sta, IEEE802_1X_TYPE_EAPOL_KEY, (u8 *) key, len); 184 if (sta->eapol_sm) 185 sta->eapol_sm->dot1xAuthEapolFramesTx++; 186 os_free(buf); 187} 188 189 190void ieee802_1x_tx_key(struct hostapd_data *hapd, struct sta_info *sta) 191{ 192 struct eapol_authenticator *eapol = hapd->eapol_auth; 193 struct eapol_state_machine *sm = sta->eapol_sm; 194 195 if (sm == NULL || !sm->eap_if->eapKeyData) 196 return; 197 198 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key(s) to " MACSTR, 199 MAC2STR(sta->addr)); 200 201#ifndef CONFIG_NO_VLAN 202 if (sta->vlan_id > 0 && sta->vlan_id <= MAX_VLAN_ID) { 203 wpa_printf(MSG_ERROR, "Using WEP with vlans is not supported."); 204 return; 205 } 206#endif /* CONFIG_NO_VLAN */ 207 208 if (eapol->default_wep_key) { 209 ieee802_1x_tx_key_one(hapd, sta, eapol->default_wep_key_idx, 1, 210 eapol->default_wep_key, 211 hapd->conf->default_wep_key_len); 212 } 213 214 if (hapd->conf->individual_wep_key_len > 0) { 215 u8 *ikey; 216 ikey = os_malloc(hapd->conf->individual_wep_key_len); 217 if (ikey == NULL || 218 random_get_bytes(ikey, hapd->conf->individual_wep_key_len)) 219 { 220 wpa_printf(MSG_ERROR, "Could not generate random " 221 "individual WEP key."); 222 os_free(ikey); 223 return; 224 } 225 226 wpa_hexdump_key(MSG_DEBUG, "Individual WEP key", 227 ikey, hapd->conf->individual_wep_key_len); 228 229 ieee802_1x_tx_key_one(hapd, sta, 0, 0, ikey, 230 hapd->conf->individual_wep_key_len); 231 232 /* TODO: set encryption in TX callback, i.e., only after STA 233 * has ACKed EAPOL-Key frame */ 234 if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP, 235 sta->addr, 0, 1, NULL, 0, ikey, 236 hapd->conf->individual_wep_key_len)) { 237 wpa_printf(MSG_ERROR, "Could not set individual WEP " 238 "encryption."); 239 } 240 241 os_free(ikey); 242 } 243} 244 245 246const char *radius_mode_txt(struct hostapd_data *hapd) 247{ 248 switch (hapd->iface->conf->hw_mode) { 249 case HOSTAPD_MODE_IEEE80211AD: 250 return "802.11ad"; 251 case HOSTAPD_MODE_IEEE80211A: 252 return "802.11a"; 253 case HOSTAPD_MODE_IEEE80211G: 254 return "802.11g"; 255 case HOSTAPD_MODE_IEEE80211B: 256 default: 257 return "802.11b"; 258 } 259} 260 261 262int radius_sta_rate(struct hostapd_data *hapd, struct sta_info *sta) 263{ 264 int i; 265 u8 rate = 0; 266 267 for (i = 0; i < sta->supported_rates_len; i++) 268 if ((sta->supported_rates[i] & 0x7f) > rate) 269 rate = sta->supported_rates[i] & 0x7f; 270 271 return rate; 272} 273 274 275#ifndef CONFIG_NO_RADIUS 276static void ieee802_1x_learn_identity(struct hostapd_data *hapd, 277 struct eapol_state_machine *sm, 278 const u8 *eap, size_t len) 279{ 280 const u8 *identity; 281 size_t identity_len; 282 283 if (len <= sizeof(struct eap_hdr) || 284 eap[sizeof(struct eap_hdr)] != EAP_TYPE_IDENTITY) 285 return; 286 287 identity = eap_get_identity(sm->eap, &identity_len); 288 if (identity == NULL) 289 return; 290 291 /* Save station identity for future RADIUS packets */ 292 os_free(sm->identity); 293 sm->identity = (u8 *) dup_binstr(identity, identity_len); 294 if (sm->identity == NULL) { 295 sm->identity_len = 0; 296 return; 297 } 298 299 sm->identity_len = identity_len; 300 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X, 301 HOSTAPD_LEVEL_DEBUG, "STA identity '%s'", sm->identity); 302 sm->dot1xAuthEapolRespIdFramesRx++; 303} 304 305 306static int add_common_radius_sta_attr(struct hostapd_data *hapd, 307 struct hostapd_radius_attr *req_attr, 308 struct sta_info *sta, 309 struct radius_msg *msg) 310{ 311 char buf[128]; 312 313 if (!hostapd_config_get_radius_attr(req_attr, 314 RADIUS_ATTR_NAS_PORT) && 315 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT, sta->aid)) { 316 wpa_printf(MSG_ERROR, "Could not add NAS-Port"); 317 return -1; 318 } 319 320 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT, 321 MAC2STR(sta->addr)); 322 buf[sizeof(buf) - 1] = '\0'; 323 if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID, 324 (u8 *) buf, os_strlen(buf))) { 325 wpa_printf(MSG_ERROR, "Could not add Calling-Station-Id"); 326 return -1; 327 } 328 329 if (sta->flags & WLAN_STA_PREAUTH) { 330 os_strlcpy(buf, "IEEE 802.11i Pre-Authentication", 331 sizeof(buf)); 332 } else { 333 os_snprintf(buf, sizeof(buf), "CONNECT %d%sMbps %s", 334 radius_sta_rate(hapd, sta) / 2, 335 (radius_sta_rate(hapd, sta) & 1) ? ".5" : "", 336 radius_mode_txt(hapd)); 337 buf[sizeof(buf) - 1] = '\0'; 338 } 339 if (!hostapd_config_get_radius_attr(req_attr, 340 RADIUS_ATTR_CONNECT_INFO) && 341 !radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO, 342 (u8 *) buf, os_strlen(buf))) { 343 wpa_printf(MSG_ERROR, "Could not add Connect-Info"); 344 return -1; 345 } 346 347 if (sta->acct_session_id_hi || sta->acct_session_id_lo) { 348 os_snprintf(buf, sizeof(buf), "%08X-%08X", 349 sta->acct_session_id_hi, sta->acct_session_id_lo); 350 if (!radius_msg_add_attr(msg, RADIUS_ATTR_ACCT_SESSION_ID, 351 (u8 *) buf, os_strlen(buf))) { 352 wpa_printf(MSG_ERROR, "Could not add Acct-Session-Id"); 353 return -1; 354 } 355 } 356 357 return 0; 358} 359 360 361int add_common_radius_attr(struct hostapd_data *hapd, 362 struct hostapd_radius_attr *req_attr, 363 struct sta_info *sta, 364 struct radius_msg *msg) 365{ 366 char buf[128]; 367 struct hostapd_radius_attr *attr; 368 369 if (!hostapd_config_get_radius_attr(req_attr, 370 RADIUS_ATTR_NAS_IP_ADDRESS) && 371 hapd->conf->own_ip_addr.af == AF_INET && 372 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS, 373 (u8 *) &hapd->conf->own_ip_addr.u.v4, 4)) { 374 wpa_printf(MSG_ERROR, "Could not add NAS-IP-Address"); 375 return -1; 376 } 377 378#ifdef CONFIG_IPV6 379 if (!hostapd_config_get_radius_attr(req_attr, 380 RADIUS_ATTR_NAS_IPV6_ADDRESS) && 381 hapd->conf->own_ip_addr.af == AF_INET6 && 382 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IPV6_ADDRESS, 383 (u8 *) &hapd->conf->own_ip_addr.u.v6, 16)) { 384 wpa_printf(MSG_ERROR, "Could not add NAS-IPv6-Address"); 385 return -1; 386 } 387#endif /* CONFIG_IPV6 */ 388 389 if (!hostapd_config_get_radius_attr(req_attr, 390 RADIUS_ATTR_NAS_IDENTIFIER) && 391 hapd->conf->nas_identifier && 392 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IDENTIFIER, 393 (u8 *) hapd->conf->nas_identifier, 394 os_strlen(hapd->conf->nas_identifier))) { 395 wpa_printf(MSG_ERROR, "Could not add NAS-Identifier"); 396 return -1; 397 } 398 399 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT ":%s", 400 MAC2STR(hapd->own_addr), 401 wpa_ssid_txt(hapd->conf->ssid.ssid, 402 hapd->conf->ssid.ssid_len)); 403 buf[sizeof(buf) - 1] = '\0'; 404 if (!hostapd_config_get_radius_attr(req_attr, 405 RADIUS_ATTR_CALLED_STATION_ID) && 406 !radius_msg_add_attr(msg, RADIUS_ATTR_CALLED_STATION_ID, 407 (u8 *) buf, os_strlen(buf))) { 408 wpa_printf(MSG_ERROR, "Could not add Called-Station-Id"); 409 return -1; 410 } 411 412 if (!hostapd_config_get_radius_attr(req_attr, 413 RADIUS_ATTR_NAS_PORT_TYPE) && 414 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT_TYPE, 415 RADIUS_NAS_PORT_TYPE_IEEE_802_11)) { 416 wpa_printf(MSG_ERROR, "Could not add NAS-Port-Type"); 417 return -1; 418 } 419 420 if (sta && add_common_radius_sta_attr(hapd, req_attr, sta, msg) < 0) 421 return -1; 422 423 for (attr = req_attr; attr; attr = attr->next) { 424 if (!radius_msg_add_attr(msg, attr->type, 425 wpabuf_head(attr->val), 426 wpabuf_len(attr->val))) { 427 wpa_printf(MSG_ERROR, "Could not add RADIUS " 428 "attribute"); 429 return -1; 430 } 431 } 432 433 return 0; 434} 435 436 437static void ieee802_1x_encapsulate_radius(struct hostapd_data *hapd, 438 struct sta_info *sta, 439 const u8 *eap, size_t len) 440{ 441 struct radius_msg *msg; 442 struct eapol_state_machine *sm = sta->eapol_sm; 443 444 if (sm == NULL) 445 return; 446 447 ieee802_1x_learn_identity(hapd, sm, eap, len); 448 449 wpa_printf(MSG_DEBUG, "Encapsulating EAP message into a RADIUS " 450 "packet"); 451 452 sm->radius_identifier = radius_client_get_id(hapd->radius); 453 msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST, 454 sm->radius_identifier); 455 if (msg == NULL) { 456 wpa_printf(MSG_INFO, "Could not create new RADIUS packet"); 457 return; 458 } 459 460 radius_msg_make_authenticator(msg, (u8 *) sta, sizeof(*sta)); 461 462 if (sm->identity && 463 !radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME, 464 sm->identity, sm->identity_len)) { 465 wpa_printf(MSG_INFO, "Could not add User-Name"); 466 goto fail; 467 } 468 469 if (add_common_radius_attr(hapd, hapd->conf->radius_auth_req_attr, sta, 470 msg) < 0) 471 goto fail; 472 473 /* TODO: should probably check MTU from driver config; 2304 is max for 474 * IEEE 802.11, but use 1400 to avoid problems with too large packets 475 */ 476 if (!hostapd_config_get_radius_attr(hapd->conf->radius_auth_req_attr, 477 RADIUS_ATTR_FRAMED_MTU) && 478 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_FRAMED_MTU, 1400)) { 479 wpa_printf(MSG_INFO, "Could not add Framed-MTU"); 480 goto fail; 481 } 482 483 if (eap && !radius_msg_add_eap(msg, eap, len)) { 484 wpa_printf(MSG_INFO, "Could not add EAP-Message"); 485 goto fail; 486 } 487 488 /* State attribute must be copied if and only if this packet is 489 * Access-Request reply to the previous Access-Challenge */ 490 if (sm->last_recv_radius && 491 radius_msg_get_hdr(sm->last_recv_radius)->code == 492 RADIUS_CODE_ACCESS_CHALLENGE) { 493 int res = radius_msg_copy_attr(msg, sm->last_recv_radius, 494 RADIUS_ATTR_STATE); 495 if (res < 0) { 496 wpa_printf(MSG_INFO, "Could not copy State attribute from previous Access-Challenge"); 497 goto fail; 498 } 499 if (res > 0) { 500 wpa_printf(MSG_DEBUG, "Copied RADIUS State Attribute"); 501 } 502 } 503 504 if (hapd->conf->radius_request_cui) { 505 const u8 *cui; 506 size_t cui_len; 507 /* Add previously learned CUI or nul CUI to request CUI */ 508 if (sm->radius_cui) { 509 cui = wpabuf_head(sm->radius_cui); 510 cui_len = wpabuf_len(sm->radius_cui); 511 } else { 512 cui = (const u8 *) "\0"; 513 cui_len = 1; 514 } 515 if (!radius_msg_add_attr(msg, 516 RADIUS_ATTR_CHARGEABLE_USER_IDENTITY, 517 cui, cui_len)) { 518 wpa_printf(MSG_ERROR, "Could not add CUI"); 519 goto fail; 520 } 521 } 522 523 if (radius_client_send(hapd->radius, msg, RADIUS_AUTH, sta->addr) < 0) 524 goto fail; 525 526 return; 527 528 fail: 529 radius_msg_free(msg); 530} 531#endif /* CONFIG_NO_RADIUS */ 532 533 534static void handle_eap_response(struct hostapd_data *hapd, 535 struct sta_info *sta, struct eap_hdr *eap, 536 size_t len) 537{ 538 u8 type, *data; 539 struct eapol_state_machine *sm = sta->eapol_sm; 540 if (sm == NULL) 541 return; 542 543 data = (u8 *) (eap + 1); 544 545 if (len < sizeof(*eap) + 1) { 546 wpa_printf(MSG_INFO, "handle_eap_response: too short response data"); 547 return; 548 } 549 550 sm->eap_type_supp = type = data[0]; 551 552 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X, 553 HOSTAPD_LEVEL_DEBUG, "received EAP packet (code=%d " 554 "id=%d len=%d) from STA: EAP Response-%s (%d)", 555 eap->code, eap->identifier, be_to_host16(eap->length), 556 eap_server_get_name(0, type), type); 557 558 sm->dot1xAuthEapolRespFramesRx++; 559 560 wpabuf_free(sm->eap_if->eapRespData); 561 sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len); 562 sm->eapolEap = TRUE; 563} 564 565 566/* Process incoming EAP packet from Supplicant */ 567static void handle_eap(struct hostapd_data *hapd, struct sta_info *sta, 568 u8 *buf, size_t len) 569{ 570 struct eap_hdr *eap; 571 u16 eap_len; 572 573 if (len < sizeof(*eap)) { 574 wpa_printf(MSG_INFO, " too short EAP packet"); 575 return; 576 } 577 578 eap = (struct eap_hdr *) buf; 579 580 eap_len = be_to_host16(eap->length); 581 wpa_printf(MSG_DEBUG, "EAP: code=%d identifier=%d length=%d", 582 eap->code, eap->identifier, eap_len); 583 if (eap_len < sizeof(*eap)) { 584 wpa_printf(MSG_DEBUG, " Invalid EAP length"); 585 return; 586 } else if (eap_len > len) { 587 wpa_printf(MSG_DEBUG, " Too short frame to contain this EAP " 588 "packet"); 589 return; 590 } else if (eap_len < len) { 591 wpa_printf(MSG_DEBUG, " Ignoring %lu extra bytes after EAP " 592 "packet", (unsigned long) len - eap_len); 593 } 594 595 switch (eap->code) { 596 case EAP_CODE_REQUEST: 597 wpa_printf(MSG_DEBUG, " (request)"); 598 return; 599 case EAP_CODE_RESPONSE: 600 wpa_printf(MSG_DEBUG, " (response)"); 601 handle_eap_response(hapd, sta, eap, eap_len); 602 break; 603 case EAP_CODE_SUCCESS: 604 wpa_printf(MSG_DEBUG, " (success)"); 605 return; 606 case EAP_CODE_FAILURE: 607 wpa_printf(MSG_DEBUG, " (failure)"); 608 return; 609 default: 610 wpa_printf(MSG_DEBUG, " (unknown code)"); 611 return; 612 } 613} 614 615 616static struct eapol_state_machine * 617ieee802_1x_alloc_eapol_sm(struct hostapd_data *hapd, struct sta_info *sta) 618{ 619 int flags = 0; 620 if (sta->flags & WLAN_STA_PREAUTH) 621 flags |= EAPOL_SM_PREAUTH; 622 if (sta->wpa_sm) { 623 flags |= EAPOL_SM_USES_WPA; 624 if (wpa_auth_sta_get_pmksa(sta->wpa_sm)) 625 flags |= EAPOL_SM_FROM_PMKSA_CACHE; 626 } 627 return eapol_auth_alloc(hapd->eapol_auth, sta->addr, flags, 628 sta->wps_ie, sta->p2p_ie, sta, 629 sta->identity, sta->radius_cui); 630} 631 632 633/** 634 * ieee802_1x_receive - Process the EAPOL frames from the Supplicant 635 * @hapd: hostapd BSS data 636 * @sa: Source address (sender of the EAPOL frame) 637 * @buf: EAPOL frame 638 * @len: Length of buf in octets 639 * 640 * This function is called for each incoming EAPOL frame from the interface 641 */ 642void ieee802_1x_receive(struct hostapd_data *hapd, const u8 *sa, const u8 *buf, 643 size_t len) 644{ 645 struct sta_info *sta; 646 struct ieee802_1x_hdr *hdr; 647 struct ieee802_1x_eapol_key *key; 648 u16 datalen; 649 struct rsn_pmksa_cache_entry *pmksa; 650 int key_mgmt; 651 652 if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && 653 !hapd->conf->wps_state) 654 return; 655 656 wpa_printf(MSG_DEBUG, "IEEE 802.1X: %lu bytes from " MACSTR, 657 (unsigned long) len, MAC2STR(sa)); 658 sta = ap_get_sta(hapd, sa); 659 if (!sta || (!(sta->flags & (WLAN_STA_ASSOC | WLAN_STA_PREAUTH)) && 660 !(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED))) { 661 wpa_printf(MSG_DEBUG, "IEEE 802.1X data frame from not " 662 "associated/Pre-authenticating STA"); 663 return; 664 } 665 666 if (len < sizeof(*hdr)) { 667 wpa_printf(MSG_INFO, " too short IEEE 802.1X packet"); 668 return; 669 } 670 671 hdr = (struct ieee802_1x_hdr *) buf; 672 datalen = be_to_host16(hdr->length); 673 wpa_printf(MSG_DEBUG, " IEEE 802.1X: version=%d type=%d length=%d", 674 hdr->version, hdr->type, datalen); 675 676 if (len - sizeof(*hdr) < datalen) { 677 wpa_printf(MSG_INFO, " frame too short for this IEEE 802.1X packet"); 678 if (sta->eapol_sm) 679 sta->eapol_sm->dot1xAuthEapLengthErrorFramesRx++; 680 return; 681 } 682 if (len - sizeof(*hdr) > datalen) { 683 wpa_printf(MSG_DEBUG, " ignoring %lu extra octets after " 684 "IEEE 802.1X packet", 685 (unsigned long) len - sizeof(*hdr) - datalen); 686 } 687 688 if (sta->eapol_sm) { 689 sta->eapol_sm->dot1xAuthLastEapolFrameVersion = hdr->version; 690 sta->eapol_sm->dot1xAuthEapolFramesRx++; 691 } 692 693 key = (struct ieee802_1x_eapol_key *) (hdr + 1); 694 if (datalen >= sizeof(struct ieee802_1x_eapol_key) && 695 hdr->type == IEEE802_1X_TYPE_EAPOL_KEY && 696 (key->type == EAPOL_KEY_TYPE_WPA || 697 key->type == EAPOL_KEY_TYPE_RSN)) { 698 wpa_receive(hapd->wpa_auth, sta->wpa_sm, (u8 *) hdr, 699 sizeof(*hdr) + datalen); 700 return; 701 } 702 703 if (!hapd->conf->ieee802_1x && 704 !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) { 705 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - " 706 "802.1X not enabled and WPS not used"); 707 return; 708 } 709 710 key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm); 711 if (key_mgmt != -1 && wpa_key_mgmt_wpa_psk(key_mgmt)) { 712 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - " 713 "STA is using PSK"); 714 return; 715 } 716 717 if (!sta->eapol_sm) { 718 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta); 719 if (!sta->eapol_sm) 720 return; 721 722#ifdef CONFIG_WPS 723 if (!hapd->conf->ieee802_1x) { 724 u32 wflags = sta->flags & (WLAN_STA_WPS | 725 WLAN_STA_WPS2 | 726 WLAN_STA_MAYBE_WPS); 727 if (wflags == WLAN_STA_MAYBE_WPS || 728 wflags == (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) { 729 /* 730 * Delay EAPOL frame transmission until a 731 * possible WPS STA initiates the handshake 732 * with EAPOL-Start. Only allow the wait to be 733 * skipped if the STA is known to support WPS 734 * 2.0. 735 */ 736 wpa_printf(MSG_DEBUG, "WPS: Do not start " 737 "EAPOL until EAPOL-Start is " 738 "received"); 739 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START; 740 } 741 } 742#endif /* CONFIG_WPS */ 743 744 sta->eapol_sm->eap_if->portEnabled = TRUE; 745 } 746 747 /* since we support version 1, we can ignore version field and proceed 748 * as specified in version 1 standard [IEEE Std 802.1X-2001, 7.5.5] */ 749 /* TODO: actually, we are not version 1 anymore.. However, Version 2 750 * does not change frame contents, so should be ok to process frames 751 * more or less identically. Some changes might be needed for 752 * verification of fields. */ 753 754 switch (hdr->type) { 755 case IEEE802_1X_TYPE_EAP_PACKET: 756 handle_eap(hapd, sta, (u8 *) (hdr + 1), datalen); 757 break; 758 759 case IEEE802_1X_TYPE_EAPOL_START: 760 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 761 HOSTAPD_LEVEL_DEBUG, "received EAPOL-Start " 762 "from STA"); 763 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START; 764 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm); 765 if (pmksa) { 766 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA, 767 HOSTAPD_LEVEL_DEBUG, "cached PMKSA " 768 "available - ignore it since " 769 "STA sent EAPOL-Start"); 770 wpa_auth_sta_clear_pmksa(sta->wpa_sm, pmksa); 771 } 772 sta->eapol_sm->eapolStart = TRUE; 773 sta->eapol_sm->dot1xAuthEapolStartFramesRx++; 774 eap_server_clear_identity(sta->eapol_sm->eap); 775 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL); 776 break; 777 778 case IEEE802_1X_TYPE_EAPOL_LOGOFF: 779 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 780 HOSTAPD_LEVEL_DEBUG, "received EAPOL-Logoff " 781 "from STA"); 782 sta->acct_terminate_cause = 783 RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST; 784 accounting_sta_stop(hapd, sta); 785 sta->eapol_sm->eapolLogoff = TRUE; 786 sta->eapol_sm->dot1xAuthEapolLogoffFramesRx++; 787 eap_server_clear_identity(sta->eapol_sm->eap); 788 break; 789 790 case IEEE802_1X_TYPE_EAPOL_KEY: 791 wpa_printf(MSG_DEBUG, " EAPOL-Key"); 792 if (!ap_sta_is_authorized(sta)) { 793 wpa_printf(MSG_DEBUG, " Dropped key data from " 794 "unauthorized Supplicant"); 795 break; 796 } 797 break; 798 799 case IEEE802_1X_TYPE_EAPOL_ENCAPSULATED_ASF_ALERT: 800 wpa_printf(MSG_DEBUG, " EAPOL-Encapsulated-ASF-Alert"); 801 /* TODO: implement support for this; show data */ 802 break; 803 804 default: 805 wpa_printf(MSG_DEBUG, " unknown IEEE 802.1X packet type"); 806 sta->eapol_sm->dot1xAuthInvalidEapolFramesRx++; 807 break; 808 } 809 810 eapol_auth_step(sta->eapol_sm); 811} 812 813 814/** 815 * ieee802_1x_new_station - Start IEEE 802.1X authentication 816 * @hapd: hostapd BSS data 817 * @sta: The station 818 * 819 * This function is called to start IEEE 802.1X authentication when a new 820 * station completes IEEE 802.11 association. 821 */ 822void ieee802_1x_new_station(struct hostapd_data *hapd, struct sta_info *sta) 823{ 824 struct rsn_pmksa_cache_entry *pmksa; 825 int reassoc = 1; 826 int force_1x = 0; 827 int key_mgmt; 828 829#ifdef CONFIG_WPS 830 if (hapd->conf->wps_state && hapd->conf->wpa && 831 (sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) { 832 /* 833 * Need to enable IEEE 802.1X/EAPOL state machines for possible 834 * WPS handshake even if IEEE 802.1X/EAPOL is not used for 835 * authentication in this BSS. 836 */ 837 force_1x = 1; 838 } 839#endif /* CONFIG_WPS */ 840 841 if (!force_1x && !hapd->conf->ieee802_1x) { 842 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - " 843 "802.1X not enabled or forced for WPS"); 844 /* 845 * Clear any possible EAPOL authenticator state to support 846 * reassociation change from WPS to PSK. 847 */ 848 ieee802_1x_free_station(sta); 849 return; 850 } 851 852 key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm); 853 if (key_mgmt != -1 && wpa_key_mgmt_wpa_psk(key_mgmt)) { 854 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - using PSK"); 855 /* 856 * Clear any possible EAPOL authenticator state to support 857 * reassociation change from WPA-EAP to PSK. 858 */ 859 ieee802_1x_free_station(sta); 860 return; 861 } 862 863 if (sta->eapol_sm == NULL) { 864 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 865 HOSTAPD_LEVEL_DEBUG, "start authentication"); 866 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta); 867 if (sta->eapol_sm == NULL) { 868 hostapd_logger(hapd, sta->addr, 869 HOSTAPD_MODULE_IEEE8021X, 870 HOSTAPD_LEVEL_INFO, 871 "failed to allocate state machine"); 872 return; 873 } 874 reassoc = 0; 875 } 876 877#ifdef CONFIG_WPS 878 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START; 879 if (!hapd->conf->ieee802_1x && !(sta->flags & WLAN_STA_WPS2)) { 880 /* 881 * Delay EAPOL frame transmission until a possible WPS STA 882 * initiates the handshake with EAPOL-Start. Only allow the 883 * wait to be skipped if the STA is known to support WPS 2.0. 884 */ 885 wpa_printf(MSG_DEBUG, "WPS: Do not start EAPOL until " 886 "EAPOL-Start is received"); 887 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START; 888 } 889#endif /* CONFIG_WPS */ 890 891 sta->eapol_sm->eap_if->portEnabled = TRUE; 892 893#ifdef CONFIG_IEEE80211R 894 if (sta->auth_alg == WLAN_AUTH_FT) { 895 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 896 HOSTAPD_LEVEL_DEBUG, 897 "PMK from FT - skip IEEE 802.1X/EAP"); 898 /* Setup EAPOL state machines to already authenticated state 899 * because of existing FT information from R0KH. */ 900 sta->eapol_sm->keyRun = TRUE; 901 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE; 902 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING; 903 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS; 904 sta->eapol_sm->authSuccess = TRUE; 905 sta->eapol_sm->authFail = FALSE; 906 if (sta->eapol_sm->eap) 907 eap_sm_notify_cached(sta->eapol_sm->eap); 908 /* TODO: get vlan_id from R0KH using RRB message */ 909 return; 910 } 911#endif /* CONFIG_IEEE80211R */ 912 913 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm); 914 if (pmksa) { 915 int old_vlanid; 916 917 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 918 HOSTAPD_LEVEL_DEBUG, 919 "PMK from PMKSA cache - skip IEEE 802.1X/EAP"); 920 /* Setup EAPOL state machines to already authenticated state 921 * because of existing PMKSA information in the cache. */ 922 sta->eapol_sm->keyRun = TRUE; 923 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE; 924 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING; 925 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS; 926 sta->eapol_sm->authSuccess = TRUE; 927 sta->eapol_sm->authFail = FALSE; 928 if (sta->eapol_sm->eap) 929 eap_sm_notify_cached(sta->eapol_sm->eap); 930 old_vlanid = sta->vlan_id; 931 pmksa_cache_to_eapol_data(pmksa, sta->eapol_sm); 932 if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED) 933 sta->vlan_id = 0; 934 ap_sta_bind_vlan(hapd, sta, old_vlanid); 935 } else { 936 if (reassoc) { 937 /* 938 * Force EAPOL state machines to start 939 * re-authentication without having to wait for the 940 * Supplicant to send EAPOL-Start. 941 */ 942 sta->eapol_sm->reAuthenticate = TRUE; 943 } 944 eapol_auth_step(sta->eapol_sm); 945 } 946} 947 948 949void ieee802_1x_free_station(struct sta_info *sta) 950{ 951 struct eapol_state_machine *sm = sta->eapol_sm; 952 953 if (sm == NULL) 954 return; 955 956 sta->eapol_sm = NULL; 957 958#ifndef CONFIG_NO_RADIUS 959 radius_msg_free(sm->last_recv_radius); 960 radius_free_class(&sm->radius_class); 961 wpabuf_free(sm->radius_cui); 962#endif /* CONFIG_NO_RADIUS */ 963 964 os_free(sm->identity); 965 eapol_auth_free(sm); 966} 967 968 969#ifndef CONFIG_NO_RADIUS 970static void ieee802_1x_decapsulate_radius(struct hostapd_data *hapd, 971 struct sta_info *sta) 972{ 973 struct wpabuf *eap; 974 const struct eap_hdr *hdr; 975 int eap_type = -1; 976 char buf[64]; 977 struct radius_msg *msg; 978 struct eapol_state_machine *sm = sta->eapol_sm; 979 980 if (sm == NULL || sm->last_recv_radius == NULL) { 981 if (sm) 982 sm->eap_if->aaaEapNoReq = TRUE; 983 return; 984 } 985 986 msg = sm->last_recv_radius; 987 988 eap = radius_msg_get_eap(msg); 989 if (eap == NULL) { 990 /* RFC 3579, Chap. 2.6.3: 991 * RADIUS server SHOULD NOT send Access-Reject/no EAP-Message 992 * attribute */ 993 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 994 HOSTAPD_LEVEL_WARNING, "could not extract " 995 "EAP-Message from RADIUS message"); 996 sm->eap_if->aaaEapNoReq = TRUE; 997 return; 998 } 999 1000 if (wpabuf_len(eap) < sizeof(*hdr)) { 1001 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 1002 HOSTAPD_LEVEL_WARNING, "too short EAP packet " 1003 "received from authentication server"); 1004 wpabuf_free(eap); 1005 sm->eap_if->aaaEapNoReq = TRUE; 1006 return; 1007 } 1008 1009 if (wpabuf_len(eap) > sizeof(*hdr)) 1010 eap_type = (wpabuf_head_u8(eap))[sizeof(*hdr)]; 1011 1012 hdr = wpabuf_head(eap); 1013 switch (hdr->code) { 1014 case EAP_CODE_REQUEST: 1015 if (eap_type >= 0) 1016 sm->eap_type_authsrv = eap_type; 1017 os_snprintf(buf, sizeof(buf), "EAP-Request-%s (%d)", 1018 eap_type >= 0 ? eap_server_get_name(0, eap_type) : 1019 "??", 1020 eap_type); 1021 break; 1022 case EAP_CODE_RESPONSE: 1023 os_snprintf(buf, sizeof(buf), "EAP Response-%s (%d)", 1024 eap_type >= 0 ? eap_server_get_name(0, eap_type) : 1025 "??", 1026 eap_type); 1027 break; 1028 case EAP_CODE_SUCCESS: 1029 os_strlcpy(buf, "EAP Success", sizeof(buf)); 1030 break; 1031 case EAP_CODE_FAILURE: 1032 os_strlcpy(buf, "EAP Failure", sizeof(buf)); 1033 break; 1034 default: 1035 os_strlcpy(buf, "unknown EAP code", sizeof(buf)); 1036 break; 1037 } 1038 buf[sizeof(buf) - 1] = '\0'; 1039 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 1040 HOSTAPD_LEVEL_DEBUG, "decapsulated EAP packet (code=%d " 1041 "id=%d len=%d) from RADIUS server: %s", 1042 hdr->code, hdr->identifier, be_to_host16(hdr->length), 1043 buf); 1044 sm->eap_if->aaaEapReq = TRUE; 1045 1046 wpabuf_free(sm->eap_if->aaaEapReqData); 1047 sm->eap_if->aaaEapReqData = eap; 1048} 1049 1050 1051static void ieee802_1x_get_keys(struct hostapd_data *hapd, 1052 struct sta_info *sta, struct radius_msg *msg, 1053 struct radius_msg *req, 1054 const u8 *shared_secret, 1055 size_t shared_secret_len) 1056{ 1057 struct radius_ms_mppe_keys *keys; 1058 struct eapol_state_machine *sm = sta->eapol_sm; 1059 if (sm == NULL) 1060 return; 1061 1062 keys = radius_msg_get_ms_keys(msg, req, shared_secret, 1063 shared_secret_len); 1064 1065 if (keys && keys->send && keys->recv) { 1066 size_t len = keys->send_len + keys->recv_len; 1067 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Send-Key", 1068 keys->send, keys->send_len); 1069 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Recv-Key", 1070 keys->recv, keys->recv_len); 1071 1072 os_free(sm->eap_if->aaaEapKeyData); 1073 sm->eap_if->aaaEapKeyData = os_malloc(len); 1074 if (sm->eap_if->aaaEapKeyData) { 1075 os_memcpy(sm->eap_if->aaaEapKeyData, keys->recv, 1076 keys->recv_len); 1077 os_memcpy(sm->eap_if->aaaEapKeyData + keys->recv_len, 1078 keys->send, keys->send_len); 1079 sm->eap_if->aaaEapKeyDataLen = len; 1080 sm->eap_if->aaaEapKeyAvailable = TRUE; 1081 } 1082 } 1083 1084 if (keys) { 1085 os_free(keys->send); 1086 os_free(keys->recv); 1087 os_free(keys); 1088 } 1089} 1090 1091 1092static void ieee802_1x_store_radius_class(struct hostapd_data *hapd, 1093 struct sta_info *sta, 1094 struct radius_msg *msg) 1095{ 1096 u8 *class; 1097 size_t class_len; 1098 struct eapol_state_machine *sm = sta->eapol_sm; 1099 int count, i; 1100 struct radius_attr_data *nclass; 1101 size_t nclass_count; 1102 1103 if (!hapd->conf->radius->acct_server || hapd->radius == NULL || 1104 sm == NULL) 1105 return; 1106 1107 radius_free_class(&sm->radius_class); 1108 count = radius_msg_count_attr(msg, RADIUS_ATTR_CLASS, 1); 1109 if (count <= 0) 1110 return; 1111 1112 nclass = os_calloc(count, sizeof(struct radius_attr_data)); 1113 if (nclass == NULL) 1114 return; 1115 1116 nclass_count = 0; 1117 1118 class = NULL; 1119 for (i = 0; i < count; i++) { 1120 do { 1121 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CLASS, 1122 &class, &class_len, 1123 class) < 0) { 1124 i = count; 1125 break; 1126 } 1127 } while (class_len < 1); 1128 1129 nclass[nclass_count].data = os_malloc(class_len); 1130 if (nclass[nclass_count].data == NULL) 1131 break; 1132 1133 os_memcpy(nclass[nclass_count].data, class, class_len); 1134 nclass[nclass_count].len = class_len; 1135 nclass_count++; 1136 } 1137 1138 sm->radius_class.attr = nclass; 1139 sm->radius_class.count = nclass_count; 1140 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Stored %lu RADIUS Class " 1141 "attributes for " MACSTR, 1142 (unsigned long) sm->radius_class.count, 1143 MAC2STR(sta->addr)); 1144} 1145 1146 1147/* Update sta->identity based on User-Name attribute in Access-Accept */ 1148static void ieee802_1x_update_sta_identity(struct hostapd_data *hapd, 1149 struct sta_info *sta, 1150 struct radius_msg *msg) 1151{ 1152 u8 *buf, *identity; 1153 size_t len; 1154 struct eapol_state_machine *sm = sta->eapol_sm; 1155 1156 if (sm == NULL) 1157 return; 1158 1159 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME, &buf, &len, 1160 NULL) < 0) 1161 return; 1162 1163 identity = (u8 *) dup_binstr(buf, len); 1164 if (identity == NULL) 1165 return; 1166 1167 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 1168 HOSTAPD_LEVEL_DEBUG, "old identity '%s' updated with " 1169 "User-Name from Access-Accept '%s'", 1170 sm->identity ? (char *) sm->identity : "N/A", 1171 (char *) identity); 1172 1173 os_free(sm->identity); 1174 sm->identity = identity; 1175 sm->identity_len = len; 1176} 1177 1178 1179/* Update CUI based on Chargeable-User-Identity attribute in Access-Accept */ 1180static void ieee802_1x_update_sta_cui(struct hostapd_data *hapd, 1181 struct sta_info *sta, 1182 struct radius_msg *msg) 1183{ 1184 struct eapol_state_machine *sm = sta->eapol_sm; 1185 struct wpabuf *cui; 1186 u8 *buf; 1187 size_t len; 1188 1189 if (sm == NULL) 1190 return; 1191 1192 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CHARGEABLE_USER_IDENTITY, 1193 &buf, &len, NULL) < 0) 1194 return; 1195 1196 cui = wpabuf_alloc_copy(buf, len); 1197 if (cui == NULL) 1198 return; 1199 1200 wpabuf_free(sm->radius_cui); 1201 sm->radius_cui = cui; 1202} 1203 1204 1205struct sta_id_search { 1206 u8 identifier; 1207 struct eapol_state_machine *sm; 1208}; 1209 1210 1211static int ieee802_1x_select_radius_identifier(struct hostapd_data *hapd, 1212 struct sta_info *sta, 1213 void *ctx) 1214{ 1215 struct sta_id_search *id_search = ctx; 1216 struct eapol_state_machine *sm = sta->eapol_sm; 1217 1218 if (sm && sm->radius_identifier >= 0 && 1219 sm->radius_identifier == id_search->identifier) { 1220 id_search->sm = sm; 1221 return 1; 1222 } 1223 return 0; 1224} 1225 1226 1227static struct eapol_state_machine * 1228ieee802_1x_search_radius_identifier(struct hostapd_data *hapd, u8 identifier) 1229{ 1230 struct sta_id_search id_search; 1231 id_search.identifier = identifier; 1232 id_search.sm = NULL; 1233 ap_for_each_sta(hapd, ieee802_1x_select_radius_identifier, &id_search); 1234 return id_search.sm; 1235} 1236 1237 1238/** 1239 * ieee802_1x_receive_auth - Process RADIUS frames from Authentication Server 1240 * @msg: RADIUS response message 1241 * @req: RADIUS request message 1242 * @shared_secret: RADIUS shared secret 1243 * @shared_secret_len: Length of shared_secret in octets 1244 * @data: Context data (struct hostapd_data *) 1245 * Returns: Processing status 1246 */ 1247static RadiusRxResult 1248ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req, 1249 const u8 *shared_secret, size_t shared_secret_len, 1250 void *data) 1251{ 1252 struct hostapd_data *hapd = data; 1253 struct sta_info *sta; 1254 u32 session_timeout = 0, termination_action, acct_interim_interval; 1255 int session_timeout_set, old_vlanid = 0; 1256 struct eapol_state_machine *sm; 1257 int override_eapReq = 0; 1258 struct radius_hdr *hdr = radius_msg_get_hdr(msg); 1259 1260 sm = ieee802_1x_search_radius_identifier(hapd, hdr->identifier); 1261 if (sm == NULL) { 1262 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Could not find matching " 1263 "station for this RADIUS message"); 1264 return RADIUS_RX_UNKNOWN; 1265 } 1266 sta = sm->sta; 1267 1268 /* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be 1269 * present when packet contains an EAP-Message attribute */ 1270 if (hdr->code == RADIUS_CODE_ACCESS_REJECT && 1271 radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL, 1272 0) < 0 && 1273 radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) { 1274 wpa_printf(MSG_DEBUG, "Allowing RADIUS Access-Reject without " 1275 "Message-Authenticator since it does not include " 1276 "EAP-Message"); 1277 } else if (radius_msg_verify(msg, shared_secret, shared_secret_len, 1278 req, 1)) { 1279 wpa_printf(MSG_INFO, "Incoming RADIUS packet did not have correct Message-Authenticator - dropped"); 1280 return RADIUS_RX_INVALID_AUTHENTICATOR; 1281 } 1282 1283 if (hdr->code != RADIUS_CODE_ACCESS_ACCEPT && 1284 hdr->code != RADIUS_CODE_ACCESS_REJECT && 1285 hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) { 1286 wpa_printf(MSG_INFO, "Unknown RADIUS message code"); 1287 return RADIUS_RX_UNKNOWN; 1288 } 1289 1290 sm->radius_identifier = -1; 1291 wpa_printf(MSG_DEBUG, "RADIUS packet matching with station " MACSTR, 1292 MAC2STR(sta->addr)); 1293 1294 radius_msg_free(sm->last_recv_radius); 1295 sm->last_recv_radius = msg; 1296 1297 session_timeout_set = 1298 !radius_msg_get_attr_int32(msg, RADIUS_ATTR_SESSION_TIMEOUT, 1299 &session_timeout); 1300 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_TERMINATION_ACTION, 1301 &termination_action)) 1302 termination_action = RADIUS_TERMINATION_ACTION_DEFAULT; 1303 1304 if (hapd->conf->acct_interim_interval == 0 && 1305 hdr->code == RADIUS_CODE_ACCESS_ACCEPT && 1306 radius_msg_get_attr_int32(msg, RADIUS_ATTR_ACCT_INTERIM_INTERVAL, 1307 &acct_interim_interval) == 0) { 1308 if (acct_interim_interval < 60) { 1309 hostapd_logger(hapd, sta->addr, 1310 HOSTAPD_MODULE_IEEE8021X, 1311 HOSTAPD_LEVEL_INFO, 1312 "ignored too small " 1313 "Acct-Interim-Interval %d", 1314 acct_interim_interval); 1315 } else 1316 sta->acct_interim_interval = acct_interim_interval; 1317 } 1318 1319 1320 switch (hdr->code) { 1321 case RADIUS_CODE_ACCESS_ACCEPT: 1322 if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED) 1323 sta->vlan_id = 0; 1324#ifndef CONFIG_NO_VLAN 1325 else { 1326 old_vlanid = sta->vlan_id; 1327 sta->vlan_id = radius_msg_get_vlanid(msg); 1328 } 1329 if (sta->vlan_id > 0 && 1330 hostapd_vlan_id_valid(hapd->conf->vlan, sta->vlan_id)) { 1331 hostapd_logger(hapd, sta->addr, 1332 HOSTAPD_MODULE_RADIUS, 1333 HOSTAPD_LEVEL_INFO, 1334 "VLAN ID %d", sta->vlan_id); 1335 } else if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_REQUIRED) { 1336 sta->eapol_sm->authFail = TRUE; 1337 hostapd_logger(hapd, sta->addr, 1338 HOSTAPD_MODULE_IEEE8021X, 1339 HOSTAPD_LEVEL_INFO, "authentication " 1340 "server did not include required VLAN " 1341 "ID in Access-Accept"); 1342 break; 1343 } 1344#endif /* CONFIG_NO_VLAN */ 1345 1346 if (ap_sta_bind_vlan(hapd, sta, old_vlanid) < 0) 1347 break; 1348 1349 /* RFC 3580, Ch. 3.17 */ 1350 if (session_timeout_set && termination_action == 1351 RADIUS_TERMINATION_ACTION_RADIUS_REQUEST) { 1352 sm->reAuthPeriod = session_timeout; 1353 } else if (session_timeout_set) 1354 ap_sta_session_timeout(hapd, sta, session_timeout); 1355 1356 sm->eap_if->aaaSuccess = TRUE; 1357 override_eapReq = 1; 1358 ieee802_1x_get_keys(hapd, sta, msg, req, shared_secret, 1359 shared_secret_len); 1360 ieee802_1x_store_radius_class(hapd, sta, msg); 1361 ieee802_1x_update_sta_identity(hapd, sta, msg); 1362 ieee802_1x_update_sta_cui(hapd, sta, msg); 1363 if (sm->eap_if->eapKeyAvailable && 1364 wpa_auth_pmksa_add(sta->wpa_sm, sm->eapol_key_crypt, 1365 session_timeout_set ? 1366 (int) session_timeout : -1, sm) == 0) { 1367 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA, 1368 HOSTAPD_LEVEL_DEBUG, 1369 "Added PMKSA cache entry"); 1370 } 1371 break; 1372 case RADIUS_CODE_ACCESS_REJECT: 1373 sm->eap_if->aaaFail = TRUE; 1374 override_eapReq = 1; 1375 break; 1376 case RADIUS_CODE_ACCESS_CHALLENGE: 1377 sm->eap_if->aaaEapReq = TRUE; 1378 if (session_timeout_set) { 1379 /* RFC 2869, Ch. 2.3.2; RFC 3580, Ch. 3.17 */ 1380 sm->eap_if->aaaMethodTimeout = session_timeout; 1381 hostapd_logger(hapd, sm->addr, 1382 HOSTAPD_MODULE_IEEE8021X, 1383 HOSTAPD_LEVEL_DEBUG, 1384 "using EAP timeout of %d seconds (from " 1385 "RADIUS)", 1386 sm->eap_if->aaaMethodTimeout); 1387 } else { 1388 /* 1389 * Use dynamic retransmission behavior per EAP 1390 * specification. 1391 */ 1392 sm->eap_if->aaaMethodTimeout = 0; 1393 } 1394 break; 1395 } 1396 1397 ieee802_1x_decapsulate_radius(hapd, sta); 1398 if (override_eapReq) 1399 sm->eap_if->aaaEapReq = FALSE; 1400 1401 eapol_auth_step(sm); 1402 1403 return RADIUS_RX_QUEUED; 1404} 1405#endif /* CONFIG_NO_RADIUS */ 1406 1407 1408void ieee802_1x_abort_auth(struct hostapd_data *hapd, struct sta_info *sta) 1409{ 1410 struct eapol_state_machine *sm = sta->eapol_sm; 1411 if (sm == NULL) 1412 return; 1413 1414 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 1415 HOSTAPD_LEVEL_DEBUG, "aborting authentication"); 1416 1417#ifndef CONFIG_NO_RADIUS 1418 radius_msg_free(sm->last_recv_radius); 1419 sm->last_recv_radius = NULL; 1420#endif /* CONFIG_NO_RADIUS */ 1421 1422 if (sm->eap_if->eapTimeout) { 1423 /* 1424 * Disconnect the STA since it did not reply to the last EAP 1425 * request and we cannot continue EAP processing (EAP-Failure 1426 * could only be sent if the EAP peer actually replied). 1427 */ 1428 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "EAP Timeout, STA " MACSTR, 1429 MAC2STR(sta->addr)); 1430 1431 sm->eap_if->portEnabled = FALSE; 1432 ap_sta_disconnect(hapd, sta, sta->addr, 1433 WLAN_REASON_PREV_AUTH_NOT_VALID); 1434 } 1435} 1436 1437 1438static int ieee802_1x_rekey_broadcast(struct hostapd_data *hapd) 1439{ 1440 struct eapol_authenticator *eapol = hapd->eapol_auth; 1441 1442 if (hapd->conf->default_wep_key_len < 1) 1443 return 0; 1444 1445 os_free(eapol->default_wep_key); 1446 eapol->default_wep_key = os_malloc(hapd->conf->default_wep_key_len); 1447 if (eapol->default_wep_key == NULL || 1448 random_get_bytes(eapol->default_wep_key, 1449 hapd->conf->default_wep_key_len)) { 1450 wpa_printf(MSG_INFO, "Could not generate random WEP key"); 1451 os_free(eapol->default_wep_key); 1452 eapol->default_wep_key = NULL; 1453 return -1; 1454 } 1455 1456 wpa_hexdump_key(MSG_DEBUG, "IEEE 802.1X: New default WEP key", 1457 eapol->default_wep_key, 1458 hapd->conf->default_wep_key_len); 1459 1460 return 0; 1461} 1462 1463 1464static int ieee802_1x_sta_key_available(struct hostapd_data *hapd, 1465 struct sta_info *sta, void *ctx) 1466{ 1467 if (sta->eapol_sm) { 1468 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE; 1469 eapol_auth_step(sta->eapol_sm); 1470 } 1471 return 0; 1472} 1473 1474 1475static void ieee802_1x_rekey(void *eloop_ctx, void *timeout_ctx) 1476{ 1477 struct hostapd_data *hapd = eloop_ctx; 1478 struct eapol_authenticator *eapol = hapd->eapol_auth; 1479 1480 if (eapol->default_wep_key_idx >= 3) 1481 eapol->default_wep_key_idx = 1482 hapd->conf->individual_wep_key_len > 0 ? 1 : 0; 1483 else 1484 eapol->default_wep_key_idx++; 1485 1486 wpa_printf(MSG_DEBUG, "IEEE 802.1X: New default WEP key index %d", 1487 eapol->default_wep_key_idx); 1488 1489 if (ieee802_1x_rekey_broadcast(hapd)) { 1490 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X, 1491 HOSTAPD_LEVEL_WARNING, "failed to generate a " 1492 "new broadcast key"); 1493 os_free(eapol->default_wep_key); 1494 eapol->default_wep_key = NULL; 1495 return; 1496 } 1497 1498 /* TODO: Could setup key for RX here, but change default TX keyid only 1499 * after new broadcast key has been sent to all stations. */ 1500 if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP, 1501 broadcast_ether_addr, 1502 eapol->default_wep_key_idx, 1, NULL, 0, 1503 eapol->default_wep_key, 1504 hapd->conf->default_wep_key_len)) { 1505 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X, 1506 HOSTAPD_LEVEL_WARNING, "failed to configure a " 1507 "new broadcast key"); 1508 os_free(eapol->default_wep_key); 1509 eapol->default_wep_key = NULL; 1510 return; 1511 } 1512 1513 ap_for_each_sta(hapd, ieee802_1x_sta_key_available, NULL); 1514 1515 if (hapd->conf->wep_rekeying_period > 0) { 1516 eloop_register_timeout(hapd->conf->wep_rekeying_period, 0, 1517 ieee802_1x_rekey, hapd, NULL); 1518 } 1519} 1520 1521 1522static void ieee802_1x_eapol_send(void *ctx, void *sta_ctx, u8 type, 1523 const u8 *data, size_t datalen) 1524{ 1525#ifdef CONFIG_WPS 1526 struct sta_info *sta = sta_ctx; 1527 1528 if ((sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) == 1529 WLAN_STA_MAYBE_WPS) { 1530 const u8 *identity; 1531 size_t identity_len; 1532 struct eapol_state_machine *sm = sta->eapol_sm; 1533 1534 identity = eap_get_identity(sm->eap, &identity_len); 1535 if (identity && 1536 ((identity_len == WSC_ID_ENROLLEE_LEN && 1537 os_memcmp(identity, WSC_ID_ENROLLEE, 1538 WSC_ID_ENROLLEE_LEN) == 0) || 1539 (identity_len == WSC_ID_REGISTRAR_LEN && 1540 os_memcmp(identity, WSC_ID_REGISTRAR, 1541 WSC_ID_REGISTRAR_LEN) == 0))) { 1542 wpa_printf(MSG_DEBUG, "WPS: WLAN_STA_MAYBE_WPS -> " 1543 "WLAN_STA_WPS"); 1544 sta->flags |= WLAN_STA_WPS; 1545 } 1546 } 1547#endif /* CONFIG_WPS */ 1548 1549 ieee802_1x_send(ctx, sta_ctx, type, data, datalen); 1550} 1551 1552 1553static void ieee802_1x_aaa_send(void *ctx, void *sta_ctx, 1554 const u8 *data, size_t datalen) 1555{ 1556#ifndef CONFIG_NO_RADIUS 1557 struct hostapd_data *hapd = ctx; 1558 struct sta_info *sta = sta_ctx; 1559 1560 ieee802_1x_encapsulate_radius(hapd, sta, data, datalen); 1561#endif /* CONFIG_NO_RADIUS */ 1562} 1563 1564 1565static void _ieee802_1x_finished(void *ctx, void *sta_ctx, int success, 1566 int preauth) 1567{ 1568 struct hostapd_data *hapd = ctx; 1569 struct sta_info *sta = sta_ctx; 1570 if (preauth) 1571 rsn_preauth_finished(hapd, sta, success); 1572 else 1573 ieee802_1x_finished(hapd, sta, success); 1574} 1575 1576 1577static int ieee802_1x_get_eap_user(void *ctx, const u8 *identity, 1578 size_t identity_len, int phase2, 1579 struct eap_user *user) 1580{ 1581 struct hostapd_data *hapd = ctx; 1582 const struct hostapd_eap_user *eap_user; 1583 int i; 1584 1585 eap_user = hostapd_get_eap_user(hapd, identity, identity_len, phase2); 1586 if (eap_user == NULL) 1587 return -1; 1588 1589 os_memset(user, 0, sizeof(*user)); 1590 user->phase2 = phase2; 1591 for (i = 0; i < EAP_MAX_METHODS; i++) { 1592 user->methods[i].vendor = eap_user->methods[i].vendor; 1593 user->methods[i].method = eap_user->methods[i].method; 1594 } 1595 1596 if (eap_user->password) { 1597 user->password = os_malloc(eap_user->password_len); 1598 if (user->password == NULL) 1599 return -1; 1600 os_memcpy(user->password, eap_user->password, 1601 eap_user->password_len); 1602 user->password_len = eap_user->password_len; 1603 user->password_hash = eap_user->password_hash; 1604 } 1605 user->force_version = eap_user->force_version; 1606 user->ttls_auth = eap_user->ttls_auth; 1607 1608 return 0; 1609} 1610 1611 1612static int ieee802_1x_sta_entry_alive(void *ctx, const u8 *addr) 1613{ 1614 struct hostapd_data *hapd = ctx; 1615 struct sta_info *sta; 1616 sta = ap_get_sta(hapd, addr); 1617 if (sta == NULL || sta->eapol_sm == NULL) 1618 return 0; 1619 return 1; 1620} 1621 1622 1623static void ieee802_1x_logger(void *ctx, const u8 *addr, 1624 eapol_logger_level level, const char *txt) 1625{ 1626#ifndef CONFIG_NO_HOSTAPD_LOGGER 1627 struct hostapd_data *hapd = ctx; 1628 int hlevel; 1629 1630 switch (level) { 1631 case EAPOL_LOGGER_WARNING: 1632 hlevel = HOSTAPD_LEVEL_WARNING; 1633 break; 1634 case EAPOL_LOGGER_INFO: 1635 hlevel = HOSTAPD_LEVEL_INFO; 1636 break; 1637 case EAPOL_LOGGER_DEBUG: 1638 default: 1639 hlevel = HOSTAPD_LEVEL_DEBUG; 1640 break; 1641 } 1642 1643 hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE8021X, hlevel, "%s", 1644 txt); 1645#endif /* CONFIG_NO_HOSTAPD_LOGGER */ 1646} 1647 1648 1649static void ieee802_1x_set_port_authorized(void *ctx, void *sta_ctx, 1650 int authorized) 1651{ 1652 struct hostapd_data *hapd = ctx; 1653 struct sta_info *sta = sta_ctx; 1654 ieee802_1x_set_sta_authorized(hapd, sta, authorized); 1655} 1656 1657 1658static void _ieee802_1x_abort_auth(void *ctx, void *sta_ctx) 1659{ 1660 struct hostapd_data *hapd = ctx; 1661 struct sta_info *sta = sta_ctx; 1662 ieee802_1x_abort_auth(hapd, sta); 1663} 1664 1665 1666static void _ieee802_1x_tx_key(void *ctx, void *sta_ctx) 1667{ 1668 struct hostapd_data *hapd = ctx; 1669 struct sta_info *sta = sta_ctx; 1670 ieee802_1x_tx_key(hapd, sta); 1671} 1672 1673 1674static void ieee802_1x_eapol_event(void *ctx, void *sta_ctx, 1675 enum eapol_event type) 1676{ 1677 /* struct hostapd_data *hapd = ctx; */ 1678 struct sta_info *sta = sta_ctx; 1679 switch (type) { 1680 case EAPOL_AUTH_SM_CHANGE: 1681 wpa_auth_sm_notify(sta->wpa_sm); 1682 break; 1683 case EAPOL_AUTH_REAUTHENTICATE: 1684 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL); 1685 break; 1686 } 1687} 1688 1689 1690int ieee802_1x_init(struct hostapd_data *hapd) 1691{ 1692 int i; 1693 struct eapol_auth_config conf; 1694 struct eapol_auth_cb cb; 1695 1696 os_memset(&conf, 0, sizeof(conf)); 1697 conf.ctx = hapd; 1698 conf.eap_reauth_period = hapd->conf->eap_reauth_period; 1699 conf.wpa = hapd->conf->wpa; 1700 conf.individual_wep_key_len = hapd->conf->individual_wep_key_len; 1701 conf.eap_server = hapd->conf->eap_server; 1702 conf.ssl_ctx = hapd->ssl_ctx; 1703 conf.msg_ctx = hapd->msg_ctx; 1704 conf.eap_sim_db_priv = hapd->eap_sim_db_priv; 1705 conf.eap_req_id_text = hapd->conf->eap_req_id_text; 1706 conf.eap_req_id_text_len = hapd->conf->eap_req_id_text_len; 1707 conf.pac_opaque_encr_key = hapd->conf->pac_opaque_encr_key; 1708 conf.eap_fast_a_id = hapd->conf->eap_fast_a_id; 1709 conf.eap_fast_a_id_len = hapd->conf->eap_fast_a_id_len; 1710 conf.eap_fast_a_id_info = hapd->conf->eap_fast_a_id_info; 1711 conf.eap_fast_prov = hapd->conf->eap_fast_prov; 1712 conf.pac_key_lifetime = hapd->conf->pac_key_lifetime; 1713 conf.pac_key_refresh_time = hapd->conf->pac_key_refresh_time; 1714 conf.eap_sim_aka_result_ind = hapd->conf->eap_sim_aka_result_ind; 1715 conf.tnc = hapd->conf->tnc; 1716 conf.wps = hapd->wps; 1717 conf.fragment_size = hapd->conf->fragment_size; 1718 conf.pwd_group = hapd->conf->pwd_group; 1719 conf.pbc_in_m1 = hapd->conf->pbc_in_m1; 1720 if (hapd->conf->server_id) { 1721 conf.server_id = (const u8 *) hapd->conf->server_id; 1722 conf.server_id_len = os_strlen(hapd->conf->server_id); 1723 } else { 1724 conf.server_id = (const u8 *) "hostapd"; 1725 conf.server_id_len = 7; 1726 } 1727 1728 os_memset(&cb, 0, sizeof(cb)); 1729 cb.eapol_send = ieee802_1x_eapol_send; 1730 cb.aaa_send = ieee802_1x_aaa_send; 1731 cb.finished = _ieee802_1x_finished; 1732 cb.get_eap_user = ieee802_1x_get_eap_user; 1733 cb.sta_entry_alive = ieee802_1x_sta_entry_alive; 1734 cb.logger = ieee802_1x_logger; 1735 cb.set_port_authorized = ieee802_1x_set_port_authorized; 1736 cb.abort_auth = _ieee802_1x_abort_auth; 1737 cb.tx_key = _ieee802_1x_tx_key; 1738 cb.eapol_event = ieee802_1x_eapol_event; 1739 1740 hapd->eapol_auth = eapol_auth_init(&conf, &cb); 1741 if (hapd->eapol_auth == NULL) 1742 return -1; 1743 1744 if ((hapd->conf->ieee802_1x || hapd->conf->wpa) && 1745 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1)) 1746 return -1; 1747 1748#ifndef CONFIG_NO_RADIUS 1749 if (radius_client_register(hapd->radius, RADIUS_AUTH, 1750 ieee802_1x_receive_auth, hapd)) 1751 return -1; 1752#endif /* CONFIG_NO_RADIUS */ 1753 1754 if (hapd->conf->default_wep_key_len) { 1755 for (i = 0; i < 4; i++) 1756 hostapd_drv_set_key(hapd->conf->iface, hapd, 1757 WPA_ALG_NONE, NULL, i, 0, NULL, 0, 1758 NULL, 0); 1759 1760 ieee802_1x_rekey(hapd, NULL); 1761 1762 if (hapd->eapol_auth->default_wep_key == NULL) 1763 return -1; 1764 } 1765 1766 return 0; 1767} 1768 1769 1770void ieee802_1x_deinit(struct hostapd_data *hapd) 1771{ 1772 eloop_cancel_timeout(ieee802_1x_rekey, hapd, NULL); 1773 1774 if (hapd->driver != NULL && 1775 (hapd->conf->ieee802_1x || hapd->conf->wpa)) 1776 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0); 1777 1778 eapol_auth_deinit(hapd->eapol_auth); 1779 hapd->eapol_auth = NULL; 1780} 1781 1782 1783int ieee802_1x_tx_status(struct hostapd_data *hapd, struct sta_info *sta, 1784 const u8 *buf, size_t len, int ack) 1785{ 1786 struct ieee80211_hdr *hdr; 1787 u8 *pos; 1788 const unsigned char rfc1042_hdr[ETH_ALEN] = 1789 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 1790 1791 if (sta == NULL) 1792 return -1; 1793 if (len < sizeof(*hdr) + sizeof(rfc1042_hdr) + 2) 1794 return 0; 1795 1796 hdr = (struct ieee80211_hdr *) buf; 1797 pos = (u8 *) (hdr + 1); 1798 if (os_memcmp(pos, rfc1042_hdr, sizeof(rfc1042_hdr)) != 0) 1799 return 0; 1800 pos += sizeof(rfc1042_hdr); 1801 if (WPA_GET_BE16(pos) != ETH_P_PAE) 1802 return 0; 1803 pos += 2; 1804 1805 return ieee802_1x_eapol_tx_status(hapd, sta, pos, buf + len - pos, 1806 ack); 1807} 1808 1809 1810int ieee802_1x_eapol_tx_status(struct hostapd_data *hapd, struct sta_info *sta, 1811 const u8 *buf, int len, int ack) 1812{ 1813 const struct ieee802_1x_hdr *xhdr = 1814 (const struct ieee802_1x_hdr *) buf; 1815 const u8 *pos = buf + sizeof(*xhdr); 1816 struct ieee802_1x_eapol_key *key; 1817 1818 if (len < (int) sizeof(*xhdr)) 1819 return 0; 1820 wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR " TX status - version=%d " 1821 "type=%d length=%d - ack=%d", 1822 MAC2STR(sta->addr), xhdr->version, xhdr->type, 1823 be_to_host16(xhdr->length), ack); 1824 1825 if (xhdr->type != IEEE802_1X_TYPE_EAPOL_KEY) 1826 return 0; 1827 1828 if (pos + sizeof(struct wpa_eapol_key) <= buf + len) { 1829 const struct wpa_eapol_key *wpa; 1830 wpa = (const struct wpa_eapol_key *) pos; 1831 if (wpa->type == EAPOL_KEY_TYPE_RSN || 1832 wpa->type == EAPOL_KEY_TYPE_WPA) 1833 wpa_auth_eapol_key_tx_status(hapd->wpa_auth, 1834 sta->wpa_sm, ack); 1835 } 1836 1837 /* EAPOL EAP-Packet packets are eventually re-sent by either Supplicant 1838 * or Authenticator state machines, but EAPOL-Key packets are not 1839 * retransmitted in case of failure. Try to re-send failed EAPOL-Key 1840 * packets couple of times because otherwise STA keys become 1841 * unsynchronized with AP. */ 1842 if (!ack && pos + sizeof(*key) <= buf + len) { 1843 key = (struct ieee802_1x_eapol_key *) pos; 1844 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X, 1845 HOSTAPD_LEVEL_DEBUG, "did not Ack EAPOL-Key " 1846 "frame (%scast index=%d)", 1847 key->key_index & BIT(7) ? "uni" : "broad", 1848 key->key_index & ~BIT(7)); 1849 /* TODO: re-send EAPOL-Key couple of times (with short delay 1850 * between them?). If all attempt fail, report error and 1851 * deauthenticate STA so that it will get new keys when 1852 * authenticating again (e.g., after returning in range). 1853 * Separate limit/transmit state needed both for unicast and 1854 * broadcast keys(?) */ 1855 } 1856 /* TODO: could move unicast key configuration from ieee802_1x_tx_key() 1857 * to here and change the key only if the EAPOL-Key packet was Acked. 1858 */ 1859 1860 return 1; 1861} 1862 1863 1864u8 * ieee802_1x_get_identity(struct eapol_state_machine *sm, size_t *len) 1865{ 1866 if (sm == NULL || sm->identity == NULL) 1867 return NULL; 1868 1869 *len = sm->identity_len; 1870 return sm->identity; 1871} 1872 1873 1874u8 * ieee802_1x_get_radius_class(struct eapol_state_machine *sm, size_t *len, 1875 int idx) 1876{ 1877 if (sm == NULL || sm->radius_class.attr == NULL || 1878 idx >= (int) sm->radius_class.count) 1879 return NULL; 1880 1881 *len = sm->radius_class.attr[idx].len; 1882 return sm->radius_class.attr[idx].data; 1883} 1884 1885 1886struct wpabuf * ieee802_1x_get_radius_cui(struct eapol_state_machine *sm) 1887{ 1888 if (sm == NULL) 1889 return NULL; 1890 return sm->radius_cui; 1891} 1892 1893 1894const u8 * ieee802_1x_get_key(struct eapol_state_machine *sm, size_t *len) 1895{ 1896 *len = 0; 1897 if (sm == NULL) 1898 return NULL; 1899 1900 *len = sm->eap_if->eapKeyDataLen; 1901 return sm->eap_if->eapKeyData; 1902} 1903 1904 1905void ieee802_1x_notify_port_enabled(struct eapol_state_machine *sm, 1906 int enabled) 1907{ 1908 if (sm == NULL) 1909 return; 1910 sm->eap_if->portEnabled = enabled ? TRUE : FALSE; 1911 eapol_auth_step(sm); 1912} 1913 1914 1915void ieee802_1x_notify_port_valid(struct eapol_state_machine *sm, 1916 int valid) 1917{ 1918 if (sm == NULL) 1919 return; 1920 sm->portValid = valid ? TRUE : FALSE; 1921 eapol_auth_step(sm); 1922} 1923 1924 1925void ieee802_1x_notify_pre_auth(struct eapol_state_machine *sm, int pre_auth) 1926{ 1927 if (sm == NULL) 1928 return; 1929 if (pre_auth) 1930 sm->flags |= EAPOL_SM_PREAUTH; 1931 else 1932 sm->flags &= ~EAPOL_SM_PREAUTH; 1933} 1934 1935 1936static const char * bool_txt(Boolean bool) 1937{ 1938 return bool ? "TRUE" : "FALSE"; 1939} 1940 1941 1942int ieee802_1x_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen) 1943{ 1944 /* TODO */ 1945 return 0; 1946} 1947 1948 1949int ieee802_1x_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta, 1950 char *buf, size_t buflen) 1951{ 1952 int len = 0, ret; 1953 struct eapol_state_machine *sm = sta->eapol_sm; 1954 struct os_time t; 1955 1956 if (sm == NULL) 1957 return 0; 1958 1959 ret = os_snprintf(buf + len, buflen - len, 1960 "dot1xPaePortNumber=%d\n" 1961 "dot1xPaePortProtocolVersion=%d\n" 1962 "dot1xPaePortCapabilities=1\n" 1963 "dot1xPaePortInitialize=%d\n" 1964 "dot1xPaePortReauthenticate=FALSE\n", 1965 sta->aid, 1966 EAPOL_VERSION, 1967 sm->initialize); 1968 if (ret < 0 || (size_t) ret >= buflen - len) 1969 return len; 1970 len += ret; 1971 1972 /* dot1xAuthConfigTable */ 1973 ret = os_snprintf(buf + len, buflen - len, 1974 "dot1xAuthPaeState=%d\n" 1975 "dot1xAuthBackendAuthState=%d\n" 1976 "dot1xAuthAdminControlledDirections=%d\n" 1977 "dot1xAuthOperControlledDirections=%d\n" 1978 "dot1xAuthAuthControlledPortStatus=%d\n" 1979 "dot1xAuthAuthControlledPortControl=%d\n" 1980 "dot1xAuthQuietPeriod=%u\n" 1981 "dot1xAuthServerTimeout=%u\n" 1982 "dot1xAuthReAuthPeriod=%u\n" 1983 "dot1xAuthReAuthEnabled=%s\n" 1984 "dot1xAuthKeyTxEnabled=%s\n", 1985 sm->auth_pae_state + 1, 1986 sm->be_auth_state + 1, 1987 sm->adminControlledDirections, 1988 sm->operControlledDirections, 1989 sm->authPortStatus, 1990 sm->portControl, 1991 sm->quietPeriod, 1992 sm->serverTimeout, 1993 sm->reAuthPeriod, 1994 bool_txt(sm->reAuthEnabled), 1995 bool_txt(sm->keyTxEnabled)); 1996 if (ret < 0 || (size_t) ret >= buflen - len) 1997 return len; 1998 len += ret; 1999 2000 /* dot1xAuthStatsTable */ 2001 ret = os_snprintf(buf + len, buflen - len, 2002 "dot1xAuthEapolFramesRx=%u\n" 2003 "dot1xAuthEapolFramesTx=%u\n" 2004 "dot1xAuthEapolStartFramesRx=%u\n" 2005 "dot1xAuthEapolLogoffFramesRx=%u\n" 2006 "dot1xAuthEapolRespIdFramesRx=%u\n" 2007 "dot1xAuthEapolRespFramesRx=%u\n" 2008 "dot1xAuthEapolReqIdFramesTx=%u\n" 2009 "dot1xAuthEapolReqFramesTx=%u\n" 2010 "dot1xAuthInvalidEapolFramesRx=%u\n" 2011 "dot1xAuthEapLengthErrorFramesRx=%u\n" 2012 "dot1xAuthLastEapolFrameVersion=%u\n" 2013 "dot1xAuthLastEapolFrameSource=" MACSTR "\n", 2014 sm->dot1xAuthEapolFramesRx, 2015 sm->dot1xAuthEapolFramesTx, 2016 sm->dot1xAuthEapolStartFramesRx, 2017 sm->dot1xAuthEapolLogoffFramesRx, 2018 sm->dot1xAuthEapolRespIdFramesRx, 2019 sm->dot1xAuthEapolRespFramesRx, 2020 sm->dot1xAuthEapolReqIdFramesTx, 2021 sm->dot1xAuthEapolReqFramesTx, 2022 sm->dot1xAuthInvalidEapolFramesRx, 2023 sm->dot1xAuthEapLengthErrorFramesRx, 2024 sm->dot1xAuthLastEapolFrameVersion, 2025 MAC2STR(sm->addr)); 2026 if (ret < 0 || (size_t) ret >= buflen - len) 2027 return len; 2028 len += ret; 2029 2030 /* dot1xAuthDiagTable */ 2031 ret = os_snprintf(buf + len, buflen - len, 2032 "dot1xAuthEntersConnecting=%u\n" 2033 "dot1xAuthEapLogoffsWhileConnecting=%u\n" 2034 "dot1xAuthEntersAuthenticating=%u\n" 2035 "dot1xAuthAuthSuccessesWhileAuthenticating=%u\n" 2036 "dot1xAuthAuthTimeoutsWhileAuthenticating=%u\n" 2037 "dot1xAuthAuthFailWhileAuthenticating=%u\n" 2038 "dot1xAuthAuthEapStartsWhileAuthenticating=%u\n" 2039 "dot1xAuthAuthEapLogoffWhileAuthenticating=%u\n" 2040 "dot1xAuthAuthReauthsWhileAuthenticated=%u\n" 2041 "dot1xAuthAuthEapStartsWhileAuthenticated=%u\n" 2042 "dot1xAuthAuthEapLogoffWhileAuthenticated=%u\n" 2043 "dot1xAuthBackendResponses=%u\n" 2044 "dot1xAuthBackendAccessChallenges=%u\n" 2045 "dot1xAuthBackendOtherRequestsToSupplicant=%u\n" 2046 "dot1xAuthBackendAuthSuccesses=%u\n" 2047 "dot1xAuthBackendAuthFails=%u\n", 2048 sm->authEntersConnecting, 2049 sm->authEapLogoffsWhileConnecting, 2050 sm->authEntersAuthenticating, 2051 sm->authAuthSuccessesWhileAuthenticating, 2052 sm->authAuthTimeoutsWhileAuthenticating, 2053 sm->authAuthFailWhileAuthenticating, 2054 sm->authAuthEapStartsWhileAuthenticating, 2055 sm->authAuthEapLogoffWhileAuthenticating, 2056 sm->authAuthReauthsWhileAuthenticated, 2057 sm->authAuthEapStartsWhileAuthenticated, 2058 sm->authAuthEapLogoffWhileAuthenticated, 2059 sm->backendResponses, 2060 sm->backendAccessChallenges, 2061 sm->backendOtherRequestsToSupplicant, 2062 sm->backendAuthSuccesses, 2063 sm->backendAuthFails); 2064 if (ret < 0 || (size_t) ret >= buflen - len) 2065 return len; 2066 len += ret; 2067 2068 /* dot1xAuthSessionStatsTable */ 2069 os_get_time(&t); 2070 ret = os_snprintf(buf + len, buflen - len, 2071 /* TODO: dot1xAuthSessionOctetsRx */ 2072 /* TODO: dot1xAuthSessionOctetsTx */ 2073 /* TODO: dot1xAuthSessionFramesRx */ 2074 /* TODO: dot1xAuthSessionFramesTx */ 2075 "dot1xAuthSessionId=%08X-%08X\n" 2076 "dot1xAuthSessionAuthenticMethod=%d\n" 2077 "dot1xAuthSessionTime=%u\n" 2078 "dot1xAuthSessionTerminateCause=999\n" 2079 "dot1xAuthSessionUserName=%s\n", 2080 sta->acct_session_id_hi, sta->acct_session_id_lo, 2081 (wpa_key_mgmt_wpa_ieee8021x( 2082 wpa_auth_sta_key_mgmt(sta->wpa_sm))) ? 2083 1 : 2, 2084 (unsigned int) (t.sec - sta->acct_session_start), 2085 sm->identity); 2086 if (ret < 0 || (size_t) ret >= buflen - len) 2087 return len; 2088 len += ret; 2089 2090 return len; 2091} 2092 2093 2094static void ieee802_1x_finished(struct hostapd_data *hapd, 2095 struct sta_info *sta, int success) 2096{ 2097 const u8 *key; 2098 size_t len; 2099 /* TODO: get PMKLifetime from WPA parameters */ 2100 static const int dot11RSNAConfigPMKLifetime = 43200; 2101 2102 key = ieee802_1x_get_key(sta->eapol_sm, &len); 2103 if (success && key && len >= PMK_LEN && 2104 wpa_auth_pmksa_add(sta->wpa_sm, key, dot11RSNAConfigPMKLifetime, 2105 sta->eapol_sm) == 0) { 2106 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA, 2107 HOSTAPD_LEVEL_DEBUG, 2108 "Added PMKSA cache entry (IEEE 802.1X)"); 2109 } 2110 2111 if (!success) { 2112 /* 2113 * Many devices require deauthentication after WPS provisioning 2114 * and some may not be be able to do that themselves, so 2115 * disconnect the client here. In addition, this may also 2116 * benefit IEEE 802.1X/EAPOL authentication cases, too since 2117 * the EAPOL PAE state machine would remain in HELD state for 2118 * considerable amount of time and some EAP methods, like 2119 * EAP-FAST with anonymous provisioning, may require another 2120 * EAPOL authentication to be started to complete connection. 2121 */ 2122 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "IEEE 802.1X: Force " 2123 "disconnection after EAP-Failure"); 2124 /* Add a small sleep to increase likelihood of previously 2125 * requested EAP-Failure TX getting out before this should the 2126 * driver reorder operations. 2127 */ 2128 os_sleep(0, 10000); 2129#ifndef ANDROID_P2P 2130 /* We need not do this for driver. For AP-SME flags if we send this disassoc, 2131 * the p2p_client is gettig disassoc after it has completed the assoc 2132 */ 2133 ap_sta_disconnect(hapd, sta, sta->addr, 2134 WLAN_REASON_IEEE_802_1X_AUTH_FAILED); 2135#endif 2136 } 2137} 2138