static int wpa_supplicant_validate_ie(struct wpa_sm *sm,
const unsigned char *src_addr,
struct wpa_eapol_ie_parse *ie)
{
if (sm->ap_wpa_ie == NULL && sm->ap_rsn_ie == NULL) {
wpa_printf(MSG_DEBUG, "WPA: No WPA/RSN IE for this AP known. "
"Trying to get from scan results");
if (wpa_sm_get_beacon_ie(sm) < 0) {
wpa_printf(MSG_WARNING, "WPA: Could not find AP from "
"the scan results");
} else {
wpa_printf(MSG_DEBUG, "WPA: Found the current AP from "
"updated scan results");
}
}
if (ie->wpa_ie == NULL && ie->rsn_ie == NULL &&
(sm->ap_wpa_ie || sm->ap_rsn_ie)) {
wpa_report_ie_mismatch(sm, "IE in 3/4 msg does not match "
"with IE in Beacon/ProbeResp (no IE?)",
src_addr, ie->wpa_ie, ie->wpa_ie_len,
ie->rsn_ie, ie->rsn_ie_len);
return -1;
}
if ((ie->wpa_ie && sm->ap_wpa_ie &&
(ie->wpa_ie_len != sm->ap_wpa_ie_len ||
os_memcmp(ie->wpa_ie, sm->ap_wpa_ie, ie->wpa_ie_len) != 0)) ||
(ie->rsn_ie && sm->ap_rsn_ie &&
wpa_compare_rsn_ie(wpa_key_mgmt_ft(sm->key_mgmt),
sm->ap_rsn_ie, sm->ap_rsn_ie_len,
ie->rsn_ie, ie->rsn_ie_len))) {
wpa_report_ie_mismatch(sm, "IE in 3/4 msg does not match "
"with IE in Beacon/ProbeResp",
src_addr, ie->wpa_ie, ie->wpa_ie_len,
ie->rsn_ie, ie->rsn_ie_len);
return -1;
}
if (sm->proto == WPA_PROTO_WPA &&
ie->rsn_ie && sm->ap_rsn_ie == NULL && sm->rsn_enabled) {
wpa_report_ie_mismatch(sm, "Possible downgrade attack "
"detected - RSN was enabled and RSN IE "
"was in msg 3/4, but not in "
"Beacon/ProbeResp",
src_addr, ie->wpa_ie, ie->wpa_ie_len,
ie->rsn_ie, ie->rsn_ie_len);
return -1;
}
#ifdef CONFIG_IEEE80211R
if (wpa_key_mgmt_ft(sm->key_mgmt) &&
wpa_supplicant_validate_ie_ft(sm, src_addr, ie) < 0)
return -1;
#endif /* CONFIG_IEEE80211R */
return 0;
}
int wpa_auth_gen_wpa_ie(struct wpa_authenticator *wpa_auth)
{
u8 *pos, buf[128];
int res;
#ifdef CONFIG_TESTING_OPTIONS
if (wpa_auth->conf.own_ie_override_len) {
wpa_hexdump(MSG_DEBUG, "WPA: Forced own IE(s) for testing",
wpa_auth->conf.own_ie_override,
wpa_auth->conf.own_ie_override_len);
os_free(wpa_auth->wpa_ie);
wpa_auth->wpa_ie =
os_malloc(wpa_auth->conf.own_ie_override_len);
if (wpa_auth->wpa_ie == NULL)
return -1;
os_memcpy(wpa_auth->wpa_ie, wpa_auth->conf.own_ie_override,
wpa_auth->conf.own_ie_override_len);
wpa_auth->wpa_ie_len = wpa_auth->conf.own_ie_override_len;
return 0;
}
#endif /* CONFIG_TESTING_OPTIONS */
pos = buf;
if (wpa_auth->conf.wpa == WPA_PROTO_OSEN) {
pos = wpa_write_osen(&wpa_auth->conf, pos);
}
if (wpa_auth->conf.wpa & WPA_PROTO_RSN) {
res = wpa_write_rsn_ie(&wpa_auth->conf,
pos, buf + sizeof(buf) - pos, NULL);
if (res < 0)
return res;
pos += res;
}
#ifdef CONFIG_IEEE80211R
if (wpa_key_mgmt_ft(wpa_auth->conf.wpa_key_mgmt)) {
res = wpa_write_mdie(&wpa_auth->conf, pos,
buf + sizeof(buf) - pos);
if (res < 0)
return res;
pos += res;
}
#endif /* CONFIG_IEEE80211R */
if (wpa_auth->conf.wpa & WPA_PROTO_WPA) {
res = wpa_write_wpa_ie(&wpa_auth->conf,
pos, buf + sizeof(buf) - pos);
if (res < 0)
return res;
pos += res;
}
os_free(wpa_auth->wpa_ie);
wpa_auth->wpa_ie = os_malloc(pos - buf);
if (wpa_auth->wpa_ie == NULL)
return -1;
os_memcpy(wpa_auth->wpa_ie, buf, pos - buf);
wpa_auth->wpa_ie_len = pos - buf;
return 0;
}
int wpa_ft_is_completed(struct wpa_sm *sm)
{
if (sm == NULL)
return 0;
if (!wpa_key_mgmt_ft(sm->key_mgmt))
return 0;
return sm->ft_completed;
}
/**
* wpa_sm_key_request - Send EAPOL-Key Request
* @sm: Pointer to WPA state machine data from wpa_sm_init()
* @error: Indicate whether this is an Michael MIC error report
* @pairwise: 1 = error report for pairwise packet, 0 = for group packet
*
* Send an EAPOL-Key Request to the current authenticator. This function is
* used to request rekeying and it is usually called when a local Michael MIC
* failure is detected.
*/
void wpa_sm_key_request(struct wpa_sm *sm, int error, int pairwise)
{
size_t rlen;
struct wpa_eapol_key *reply;
int key_info, ver;
u8 bssid[ETH_ALEN], *rbuf;
if (wpa_key_mgmt_ft(sm->key_mgmt) || wpa_key_mgmt_sha256(sm->key_mgmt))
ver = WPA_KEY_INFO_TYPE_AES_128_CMAC;
else if (sm->pairwise_cipher == WPA_CIPHER_CCMP)
ver = WPA_KEY_INFO_TYPE_HMAC_SHA1_AES;
else
ver = WPA_KEY_INFO_TYPE_HMAC_MD5_RC4;
if (wpa_sm_get_bssid(sm, bssid) < 0) {
wpa_printf(MSG_WARNING, "Failed to read BSSID for EAPOL-Key "
"request");
return;
}
rbuf = wpa_sm_alloc_eapol(sm, IEEE802_1X_TYPE_EAPOL_KEY, NULL,
sizeof(*reply), &rlen, (void *) &reply);
if (rbuf == NULL)
return;
reply->type = sm->proto == WPA_PROTO_RSN ?
EAPOL_KEY_TYPE_RSN : EAPOL_KEY_TYPE_WPA;
key_info = WPA_KEY_INFO_REQUEST | ver;
if (sm->ptk_set)
key_info |= WPA_KEY_INFO_MIC;
if (error)
key_info |= WPA_KEY_INFO_ERROR;
if (pairwise)
key_info |= WPA_KEY_INFO_KEY_TYPE;
WPA_PUT_BE16(reply->key_info, key_info);
WPA_PUT_BE16(reply->key_length, 0);
os_memcpy(reply->replay_counter, sm->request_counter,
WPA_REPLAY_COUNTER_LEN);
inc_byte_array(sm->request_counter, WPA_REPLAY_COUNTER_LEN);
WPA_PUT_BE16(reply->key_data_length, 0);
wpa_printf(MSG_INFO, "WPA: Sending EAPOL-Key Request (error=%d "
"pairwise=%d ptk_set=%d len=%lu)",
error, pairwise, sm->ptk_set, (unsigned long) rlen);
wpa_eapol_key_send(sm, sm->ptk.kck, ver, bssid, ETH_P_EAPOL,
rbuf, rlen, key_info & WPA_KEY_INFO_MIC ?
reply->key_mic : NULL);
}
static int wpa_derive_ptk(struct wpa_sm *sm, const unsigned char *src_addr,
const struct wpa_eapol_key *key,
struct wpa_ptk *ptk)
{
size_t ptk_len = sm->pairwise_cipher == WPA_CIPHER_CCMP ? 48 : 64;
#ifdef CONFIG_IEEE80211R
if (wpa_key_mgmt_ft(sm->key_mgmt))
return wpa_derive_ptk_ft(sm, src_addr, key, ptk, ptk_len);
#endif /* CONFIG_IEEE80211R */
wpa_pmk_to_ptk(sm->pmk, sm->pmk_len, "Pairwise key expansion",
sm->own_addr, sm->bssid, sm->snonce, key->key_nonce,
(u8 *) ptk, ptk_len,
wpa_key_mgmt_sha256(sm->key_mgmt));
return 0;
}
static void wpa_supplicant_key_neg_complete(struct wpa_sm *sm,
const u8 *addr, int secure)
{
wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
"WPA: Key negotiation completed with "
MACSTR " [PTK=%s GTK=%s]", MAC2STR(addr),
wpa_cipher_txt(sm->pairwise_cipher),
wpa_cipher_txt(sm->group_cipher));
wpa_sm_cancel_auth_timeout(sm);
wpa_sm_set_state(sm, WPA_COMPLETED);
if (secure) {
wpa_sm_mlme_setprotection(
sm, addr, MLME_SETPROTECTION_PROTECT_TYPE_RX_TX,
MLME_SETPROTECTION_KEY_TYPE_PAIRWISE);
eapol_sm_notify_portValid(sm->eapol, TRUE);
if (wpa_key_mgmt_wpa_psk(sm->key_mgmt))
eapol_sm_notify_eap_success(sm->eapol, TRUE);
/*
* Start preauthentication after a short wait to avoid a
* possible race condition between the data receive and key
* configuration after the 4-Way Handshake. This increases the
* likelyhood of the first preauth EAPOL-Start frame getting to
* the target AP.
*/
eloop_register_timeout(1, 0, wpa_sm_start_preauth, sm, NULL);
}
if (sm->cur_pmksa && sm->cur_pmksa->opportunistic) {
wpa_printf(MSG_DEBUG, "RSN: Authenticator accepted "
"opportunistic PMKSA entry - marking it valid");
sm->cur_pmksa->opportunistic = 0;
}
#ifdef CONFIG_IEEE80211R
if (wpa_key_mgmt_ft(sm->key_mgmt)) {
/* Prepare for the next transition */
wpa_ft_prepare_auth_request(sm, NULL);
}
#endif /* CONFIG_IEEE80211R */
}
int wpa_auth_gen_wpa_ie(struct wpa_authenticator *wpa_auth)
{
u8 *pos, buf[128];
int res;
pos = buf;
if (wpa_auth->conf.wpa & WPA_PROTO_RSN) {
res = wpa_write_rsn_ie(&wpa_auth->conf,
pos, buf + sizeof(buf) - pos, NULL);
if (res < 0)
return res;
pos += res;
}
#ifdef CONFIG_IEEE80211R
if (wpa_key_mgmt_ft(wpa_auth->conf.wpa_key_mgmt)) {
res = wpa_write_mdie(&wpa_auth->conf, pos,
buf + sizeof(buf) - pos);
if (res < 0)
return res;
pos += res;
}
#endif /* CONFIG_IEEE80211R */
if (wpa_auth->conf.wpa & WPA_PROTO_WPA) {
res = wpa_write_wpa_ie(&wpa_auth->conf,
pos, buf + sizeof(buf) - pos);
if (res < 0)
return res;
pos += res;
}
os_free(wpa_auth->wpa_ie);
wpa_auth->wpa_ie = os_malloc(pos - buf);
if (wpa_auth->wpa_ie == NULL)
return -1;
os_memcpy(wpa_auth->wpa_ie, buf, pos - buf);
wpa_auth->wpa_ie_len = pos - buf;
return 0;
}
int wpa_ft_process_response(struct wpa_sm *sm, const u8 *ies, size_t ies_len,
int ft_action, const u8 *target_ap,
const u8 *ric_ies, size_t ric_ies_len)
{
u8 *ft_ies;
size_t ft_ies_len;
struct wpa_ft_ies parse;
struct rsn_mdie *mdie;
struct rsn_ftie *ftie;
u8 ptk_name[WPA_PMK_NAME_LEN];
int ret;
const u8 *bssid;
wpa_hexdump(MSG_DEBUG, "FT: Response IEs", ies, ies_len);
wpa_hexdump(MSG_DEBUG, "FT: RIC IEs", ric_ies, ric_ies_len);
if (ft_action) {
if (!sm->over_the_ds_in_progress) {
wpa_printf(MSG_DEBUG, "FT: No over-the-DS in progress "
"- drop FT Action Response");
return -1;
}
if (os_memcmp(target_ap, sm->target_ap, ETH_ALEN) != 0) {
wpa_printf(MSG_DEBUG, "FT: No over-the-DS in progress "
"with this Target AP - drop FT Action "
"Response");
return -1;
}
}
if (!wpa_key_mgmt_ft(sm->key_mgmt)) {
wpa_printf(MSG_DEBUG, "FT: Reject FT IEs since FT is not "
"enabled for this connection");
return -1;
}
if (wpa_ft_parse_ies(ies, ies_len, &parse) < 0) {
wpa_printf(MSG_DEBUG, "FT: Failed to parse IEs");
return -1;
}
mdie = (struct rsn_mdie *) parse.mdie;
if (mdie == NULL || parse.mdie_len < sizeof(*mdie) ||
os_memcmp(mdie->mobility_domain, sm->mobility_domain,
MOBILITY_DOMAIN_ID_LEN) != 0) {
wpa_printf(MSG_DEBUG, "FT: Invalid MDIE");
return -1;
}
ftie = (struct rsn_ftie *) parse.ftie;
if (ftie == NULL || parse.ftie_len < sizeof(*ftie)) {
wpa_printf(MSG_DEBUG, "FT: Invalid FTIE");
return -1;
}
if (os_memcmp(ftie->snonce, sm->snonce, WPA_NONCE_LEN) != 0) {
wpa_printf(MSG_DEBUG, "FT: SNonce mismatch in FTIE");
wpa_hexdump(MSG_DEBUG, "FT: Received SNonce",
ftie->snonce, WPA_NONCE_LEN);
wpa_hexdump(MSG_DEBUG, "FT: Expected SNonce",
sm->snonce, WPA_NONCE_LEN);
return -1;
}
if (parse.r0kh_id == NULL) {
wpa_printf(MSG_DEBUG, "FT: No R0KH-ID subelem in FTIE");
return -1;
}
if (parse.r0kh_id_len != sm->r0kh_id_len ||
os_memcmp_const(parse.r0kh_id, sm->r0kh_id, parse.r0kh_id_len) != 0)
{
wpa_printf(MSG_DEBUG, "FT: R0KH-ID in FTIE did not match with "
"the current R0KH-ID");
wpa_hexdump(MSG_DEBUG, "FT: R0KH-ID in FTIE",
parse.r0kh_id, parse.r0kh_id_len);
wpa_hexdump(MSG_DEBUG, "FT: The current R0KH-ID",
sm->r0kh_id, sm->r0kh_id_len);
return -1;
}
if (parse.r1kh_id == NULL) {
wpa_printf(MSG_DEBUG, "FT: No R1KH-ID subelem in FTIE");
return -1;
}
if (parse.rsn_pmkid == NULL ||
os_memcmp_const(parse.rsn_pmkid, sm->pmk_r0_name, WPA_PMK_NAME_LEN))
{
wpa_printf(MSG_DEBUG, "FT: No matching PMKR0Name (PMKID) in "
"RSNIE");
return -1;
}
os_memcpy(sm->r1kh_id, parse.r1kh_id, FT_R1KH_ID_LEN);
wpa_hexdump(MSG_DEBUG, "FT: R1KH-ID", sm->r1kh_id, FT_R1KH_ID_LEN);
wpa_hexdump(MSG_DEBUG, "FT: SNonce", sm->snonce, WPA_NONCE_LEN);
wpa_hexdump(MSG_DEBUG, "FT: ANonce", ftie->anonce, WPA_NONCE_LEN);
os_memcpy(sm->anonce, ftie->anonce, WPA_NONCE_LEN);
wpa_derive_pmk_r1(sm->pmk_r0, sm->pmk_r0_name, sm->r1kh_id,
sm->own_addr, sm->pmk_r1, sm->pmk_r1_name);
wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", sm->pmk_r1, PMK_LEN);
wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name",
sm->pmk_r1_name, WPA_PMK_NAME_LEN);
bssid = target_ap;
if (wpa_pmk_r1_to_ptk(sm->pmk_r1, sm->snonce, ftie->anonce,
sm->own_addr, bssid, sm->pmk_r1_name, &sm->ptk,
ptk_name, sm->key_mgmt, sm->pairwise_cipher) < 0)
return -1;
ft_ies = wpa_ft_gen_req_ies(sm, &ft_ies_len, ftie->anonce,
sm->pmk_r1_name,
sm->ptk.kck, sm->ptk.kck_len, bssid,
ric_ies, ric_ies_len,
parse.mdie ? parse.mdie - 2 : NULL);
if (ft_ies) {
wpa_sm_update_ft_ies(sm, sm->mobility_domain,
ft_ies, ft_ies_len);
os_free(ft_ies);
}
wpa_sm_mark_authenticated(sm, bssid);
ret = wpa_ft_install_ptk(sm, bssid);
if (ret) {
/*
* Some drivers do not support key configuration when we are
* not associated with the target AP. Work around this by
* trying again after the following reassociation gets
* completed.
*/
wpa_printf(MSG_DEBUG, "FT: Failed to set PTK prior to "
"association - try again after reassociation");
sm->set_ptk_after_assoc = 1;
} else
sm->set_ptk_after_assoc = 0;
sm->ft_completed = 1;
if (ft_action) {
/*
* The caller is expected trigger re-association with the
* Target AP.
*/
os_memcpy(sm->bssid, target_ap, ETH_ALEN);
}
return 0;
}
static void sme_send_authentication(struct wpa_supplicant *wpa_s,
struct wpa_bss *bss, struct wpa_ssid *ssid,
int start)
{
struct wpa_driver_auth_params params;
struct wpa_ssid *old_ssid;
#ifdef CONFIG_IEEE80211R
const u8 *ie;
#endif /* CONFIG_IEEE80211R */
#ifdef CONFIG_IEEE80211R
const u8 *md = NULL;
#endif /* CONFIG_IEEE80211R */
int i, bssid_changed;
struct wpabuf *resp = NULL;
u8 ext_capab[18];
int ext_capab_len;
int skip_auth;
if (bss == NULL) {
wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
"the network");
wpas_connect_work_done(wpa_s);
return;
}
skip_auth = wpa_s->conf->reassoc_same_bss_optim &&
wpa_s->reassoc_same_bss;
wpa_s->current_bss = bss;
os_memset(¶ms, 0, sizeof(params));
wpa_s->reassociate = 0;
params.freq = bss->freq;
params.bssid = bss->bssid;
params.ssid = bss->ssid;
params.ssid_len = bss->ssid_len;
params.p2p = ssid->p2p_group;
if (wpa_s->sme.ssid_len != params.ssid_len ||
os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
wpa_s->sme.prev_bssid_set = 0;
wpa_s->sme.freq = params.freq;
os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
wpa_s->sme.ssid_len = params.ssid_len;
params.auth_alg = WPA_AUTH_ALG_OPEN;
#ifdef IEEE8021X_EAPOL
if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
if (ssid->leap) {
if (ssid->non_leap == 0)
params.auth_alg = WPA_AUTH_ALG_LEAP;
else
params.auth_alg |= WPA_AUTH_ALG_LEAP;
}
}
#endif /* IEEE8021X_EAPOL */
wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
params.auth_alg);
if (ssid->auth_alg) {
params.auth_alg = ssid->auth_alg;
wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
"0x%x", params.auth_alg);
}
#ifdef CONFIG_SAE
wpa_s->sme.sae_pmksa_caching = 0;
if (wpa_key_mgmt_sae(ssid->key_mgmt)) {
const u8 *rsn;
struct wpa_ie_data ied;
rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
if (!rsn) {
wpa_dbg(wpa_s, MSG_DEBUG,
"SAE enabled, but target BSS does not advertise RSN");
} else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 &&
wpa_key_mgmt_sae(ied.key_mgmt)) {
wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg");
params.auth_alg = WPA_AUTH_ALG_SAE;
} else {
wpa_dbg(wpa_s, MSG_DEBUG,
"SAE enabled, but target BSS does not advertise SAE AKM for RSN");
}
}
#endif /* CONFIG_SAE */
for (i = 0; i < NUM_WEP_KEYS; i++) {
if (ssid->wep_key_len[i])
params.wep_key[i] = ssid->wep_key[i];
params.wep_key_len[i] = ssid->wep_key_len[i];
}
params.wep_tx_keyidx = ssid->wep_tx_keyidx;
bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
os_memset(wpa_s->bssid, 0, ETH_ALEN);
os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
if (bssid_changed)
wpas_notify_bssid_changed(wpa_s);
if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
wpa_key_mgmt_wpa(ssid->key_mgmt)) {
int try_opportunistic;
try_opportunistic = (ssid->proactive_key_caching < 0 ?
wpa_s->conf->okc :
ssid->proactive_key_caching) &&
(ssid->proto & WPA_PROTO_RSN);
if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
wpa_s->current_ssid,
try_opportunistic) == 0)
eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
wpa_s->sme.assoc_req_ie,
&wpa_s->sme.assoc_req_ie_len)) {
wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
"key management and encryption suites");
wpas_connect_work_done(wpa_s);
return;
}
} else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
/*
* Both WPA and non-WPA IEEE 802.1X enabled in configuration -
* use non-WPA since the scan results did not indicate that the
* AP is using WPA or WPA2.
*/
wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
wpa_s->sme.assoc_req_ie_len = 0;
} else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
wpa_s->sme.assoc_req_ie,
&wpa_s->sme.assoc_req_ie_len)) {
wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
"key management and encryption suites (no "
"scan results)");
wpas_connect_work_done(wpa_s);
return;
}
#ifdef CONFIG_WPS
} else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
struct wpabuf *wps_ie;
wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
if (wps_ie && wpabuf_len(wps_ie) <=
sizeof(wpa_s->sme.assoc_req_ie)) {
wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
wpa_s->sme.assoc_req_ie_len);
} else
wpa_s->sme.assoc_req_ie_len = 0;
wpabuf_free(wps_ie);
wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
#endif /* CONFIG_WPS */
} else {
wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
wpa_s->sme.assoc_req_ie_len = 0;
}
#ifdef CONFIG_IEEE80211R
ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
md = ie + 2;
wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
if (md) {
/* Prepare for the next transition */
wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
}
if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) {
if (wpa_s->sme.assoc_req_ie_len + 5 <
sizeof(wpa_s->sme.assoc_req_ie)) {
struct rsn_mdie *mdie;
u8 *pos = wpa_s->sme.assoc_req_ie +
wpa_s->sme.assoc_req_ie_len;
*pos++ = WLAN_EID_MOBILITY_DOMAIN;
*pos++ = sizeof(*mdie);
mdie = (struct rsn_mdie *) pos;
os_memcpy(mdie->mobility_domain, md,
MOBILITY_DOMAIN_ID_LEN);
mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
wpa_s->sme.assoc_req_ie_len += 5;
}
if (wpa_s->sme.ft_used &&
os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
wpa_sm_has_ptk(wpa_s->wpa)) {
wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
"over-the-air");
params.auth_alg = WPA_AUTH_ALG_FT;
params.ie = wpa_s->sme.ft_ies;
params.ie_len = wpa_s->sme.ft_ies_len;
}
}
#endif /* CONFIG_IEEE80211R */
#ifdef CONFIG_IEEE80211W
wpa_s->sme.mfp = wpas_get_ssid_pmf(wpa_s, ssid);
if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) {
const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
struct wpa_ie_data _ie;
if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
_ie.capabilities &
(WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
"MFP: require MFP");
wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
}
}
#endif /* CONFIG_IEEE80211W */
#ifdef CONFIG_P2P
if (wpa_s->global->p2p) {
u8 *pos;
size_t len;
int res;
pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
len = sizeof(wpa_s->sme.assoc_req_ie) -
wpa_s->sme.assoc_req_ie_len;
res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
ssid->p2p_group);
if (res >= 0)
wpa_s->sme.assoc_req_ie_len += res;
}
#endif /* CONFIG_P2P */
#ifdef CONFIG_HS20
if (is_hs20_network(wpa_s, ssid, bss)) {
struct wpabuf *hs20;
hs20 = wpabuf_alloc(20);
if (hs20) {
int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid);
size_t len;
wpas_hs20_add_indication(hs20, pps_mo_id);
len = sizeof(wpa_s->sme.assoc_req_ie) -
wpa_s->sme.assoc_req_ie_len;
if (wpabuf_len(hs20) <= len) {
os_memcpy(wpa_s->sme.assoc_req_ie +
wpa_s->sme.assoc_req_ie_len,
wpabuf_head(hs20), wpabuf_len(hs20));
wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
}
wpabuf_free(hs20);
}
}
#endif /* CONFIG_HS20 */
ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab,
sizeof(ext_capab));
if (ext_capab_len > 0) {
u8 *pos = wpa_s->sme.assoc_req_ie;
if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
pos += 2 + pos[1];
os_memmove(pos + ext_capab_len, pos,
wpa_s->sme.assoc_req_ie_len -
(pos - wpa_s->sme.assoc_req_ie));
wpa_s->sme.assoc_req_ie_len += ext_capab_len;
os_memcpy(pos, ext_capab, ext_capab_len);
}
if (wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]) {
struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ];
size_t len;
len = sizeof(wpa_s->sme.assoc_req_ie) -
wpa_s->sme.assoc_req_ie_len;
if (wpabuf_len(buf) <= len) {
os_memcpy(wpa_s->sme.assoc_req_ie +
wpa_s->sme.assoc_req_ie_len,
wpabuf_head(buf), wpabuf_len(buf));
wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
}
}
sme_auth_handle_rrm(wpa_s, bss);
#ifdef CONFIG_SAE
if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE &&
pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, ssid, 0) == 0)
{
wpa_dbg(wpa_s, MSG_DEBUG,
"PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication");
params.auth_alg = WPA_AUTH_ALG_OPEN;
wpa_s->sme.sae_pmksa_caching = 1;
}
if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE) {
if (start)
resp = sme_auth_build_sae_commit(wpa_s, ssid,
bss->bssid);
else
resp = sme_auth_build_sae_confirm(wpa_s);
if (resp == NULL) {
wpas_connection_failed(wpa_s, bss->bssid, 1);
return;
}
params.sae_data = wpabuf_head(resp);
params.sae_data_len = wpabuf_len(resp);
wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED;
}
#endif /* CONFIG_SAE */
wpa_supplicant_cancel_sched_scan(wpa_s);
wpa_supplicant_cancel_scan(wpa_s);
wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
" (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
wpa_clear_keys(wpa_s, bss->bssid);
wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
old_ssid = wpa_s->current_ssid;
wpa_s->current_ssid = ssid;
wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
wpa_supplicant_initiate_eapol(wpa_s);
if (old_ssid != wpa_s->current_ssid)
wpas_notify_network_changed(wpa_s);
#ifdef CONFIG_P2P
/*
* If multi-channel concurrency is not supported, check for any
* frequency conflict. In case of any frequency conflict, remove the
* least prioritized connection.
*/
if (wpa_s->num_multichan_concurrent < 2) {
int freq, num;
num = get_shared_radio_freqs(wpa_s, &freq, 1);
if (num > 0 && freq > 0 && freq != params.freq) {
wpa_printf(MSG_DEBUG,
"Conflicting frequency found (%d != %d)",
freq, params.freq);
if (wpas_p2p_handle_frequency_conflicts(wpa_s,
params.freq,
ssid) < 0) {
wpas_connection_failed(wpa_s, bss->bssid, 0);
wpa_supplicant_mark_disassoc(wpa_s);
wpabuf_free(resp);
wpas_connect_work_done(wpa_s);
return;
}
}
}
#endif /* CONFIG_P2P */
if (skip_auth) {
wpa_msg(wpa_s, MSG_DEBUG,
"SME: Skip authentication step on reassoc-to-same-BSS");
wpabuf_free(resp);
sme_associate(wpa_s, ssid->mode, bss->bssid, WLAN_AUTH_OPEN);
return;
}
wpa_s->sme.auth_alg = params.auth_alg;
if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) {
wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
"driver failed");
wpas_connection_failed(wpa_s, bss->bssid, 1);
wpa_supplicant_mark_disassoc(wpa_s);
wpabuf_free(resp);
wpas_connect_work_done(wpa_s);
return;
}
eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
NULL);
/*
* Association will be started based on the authentication event from
* the driver.
*/
wpabuf_free(resp);
}
static void wpa_supplicant_eapol_cb(struct eapol_sm *eapol,
enum eapol_supp_result result,
void *ctx)
{
struct wpa_supplicant *wpa_s = ctx;
int res, pmk_len;
u8 pmk[PMK_LEN];
wpa_printf(MSG_DEBUG, "EAPOL authentication completed - result=%s",
result_str(result));
if (wpas_wps_eapol_cb(wpa_s) > 0)
return;
wpa_s->eap_expected_failure = result ==
EAPOL_SUPP_RESULT_EXPECTED_FAILURE;
if (result != EAPOL_SUPP_RESULT_SUCCESS) {
/*
* Make sure we do not get stuck here waiting for long EAPOL
* timeout if the AP does not disconnect in case of
* authentication failure.
*/
wpa_supplicant_req_auth_timeout(wpa_s, 2, 0);
} else {
ieee802_1x_notify_create_actor(wpa_s, wpa_s->last_eapol_src);
}
if (result != EAPOL_SUPP_RESULT_SUCCESS ||
!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
return;
if (!wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt))
return;
wpa_printf(MSG_DEBUG, "Configure PMK for driver-based RSN 4-way "
"handshake");
pmk_len = PMK_LEN;
if (wpa_key_mgmt_ft(wpa_s->key_mgmt)) {
#ifdef CONFIG_IEEE80211R
u8 buf[2 * PMK_LEN];
wpa_printf(MSG_DEBUG, "RSN: Use FT XXKey as PMK for "
"driver-based 4-way hs and FT");
res = eapol_sm_get_key(eapol, buf, 2 * PMK_LEN);
if (res == 0) {
os_memcpy(pmk, buf + PMK_LEN, PMK_LEN);
os_memset(buf, 0, sizeof(buf));
}
#else /* CONFIG_IEEE80211R */
res = -1;
#endif /* CONFIG_IEEE80211R */
} else {
res = eapol_sm_get_key(eapol, pmk, PMK_LEN);
if (res) {
/*
* EAP-LEAP is an exception from other EAP methods: it
* uses only 16-byte PMK.
*/
res = eapol_sm_get_key(eapol, pmk, 16);
pmk_len = 16;
}
}
if (res) {
wpa_printf(MSG_DEBUG, "Failed to get PMK from EAPOL state "
"machines");
return;
}
wpa_hexdump_key(MSG_DEBUG, "RSN: Configure PMK for driver-based 4-way "
"handshake", pmk, pmk_len);
if (wpa_drv_set_key(wpa_s, WPA_ALG_PMK, NULL, 0, 0, NULL, 0, pmk,
pmk_len)) {
wpa_printf(MSG_DEBUG, "Failed to set PMK to the driver");
}
wpa_supplicant_cancel_scan(wpa_s);
wpa_supplicant_cancel_auth_timeout(wpa_s);
wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
}
int wpa_validate_wpa_ie(struct wpa_authenticator *wpa_auth,
struct wpa_state_machine *sm,
const u8 *wpa_ie, size_t wpa_ie_len,
const u8 *mdie, size_t mdie_len)
{
struct wpa_ie_data data;
int ciphers, key_mgmt, res, version;
u32 selector;
size_t i;
const u8 *pmkid = NULL;
if (wpa_auth == NULL || sm == NULL)
return WPA_NOT_ENABLED;
if (wpa_ie == NULL || wpa_ie_len < 1)
return WPA_INVALID_IE;
if (wpa_ie[0] == WLAN_EID_RSN)
version = WPA_PROTO_RSN;
else
version = WPA_PROTO_WPA;
if (!(wpa_auth->conf.wpa & version)) {
wpa_printf(MSG_DEBUG, "Invalid WPA proto (%d) from " MACSTR,
version, MAC2STR(sm->addr));
return WPA_INVALID_PROTO;
}
if (version == WPA_PROTO_RSN) {
res = wpa_parse_wpa_ie_rsn(wpa_ie, wpa_ie_len, &data);
selector = RSN_AUTH_KEY_MGMT_UNSPEC_802_1X;
if (0) {
}
#ifdef CONFIG_IEEE80211R
else if (data.key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X)
selector = RSN_AUTH_KEY_MGMT_FT_802_1X;
else if (data.key_mgmt & WPA_KEY_MGMT_FT_PSK)
selector = RSN_AUTH_KEY_MGMT_FT_PSK;
#endif /* CONFIG_IEEE80211R */
#ifdef CONFIG_IEEE80211W
else if (data.key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256)
selector = RSN_AUTH_KEY_MGMT_802_1X_SHA256;
else if (data.key_mgmt & WPA_KEY_MGMT_PSK_SHA256)
selector = RSN_AUTH_KEY_MGMT_PSK_SHA256;
#endif /* CONFIG_IEEE80211W */
#ifdef CONFIG_SAE
else if (data.key_mgmt & WPA_KEY_MGMT_SAE)
selector = RSN_AUTH_KEY_MGMT_SAE;
else if (data.key_mgmt & WPA_KEY_MGMT_FT_SAE)
selector = RSN_AUTH_KEY_MGMT_FT_SAE;
#endif /* CONFIG_SAE */
else if (data.key_mgmt & WPA_KEY_MGMT_IEEE8021X)
selector = RSN_AUTH_KEY_MGMT_UNSPEC_802_1X;
else if (data.key_mgmt & WPA_KEY_MGMT_PSK)
selector = RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X;
wpa_auth->dot11RSNAAuthenticationSuiteSelected = selector;
selector = wpa_cipher_to_suite(WPA_PROTO_RSN,
data.pairwise_cipher);
if (!selector)
selector = RSN_CIPHER_SUITE_CCMP;
wpa_auth->dot11RSNAPairwiseCipherSelected = selector;
selector = wpa_cipher_to_suite(WPA_PROTO_RSN,
data.group_cipher);
if (!selector)
selector = RSN_CIPHER_SUITE_CCMP;
wpa_auth->dot11RSNAGroupCipherSelected = selector;
} else {
res = wpa_parse_wpa_ie_wpa(wpa_ie, wpa_ie_len, &data);
selector = WPA_AUTH_KEY_MGMT_UNSPEC_802_1X;
if (data.key_mgmt & WPA_KEY_MGMT_IEEE8021X)
selector = WPA_AUTH_KEY_MGMT_UNSPEC_802_1X;
else if (data.key_mgmt & WPA_KEY_MGMT_PSK)
selector = WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X;
wpa_auth->dot11RSNAAuthenticationSuiteSelected = selector;
selector = wpa_cipher_to_suite(WPA_PROTO_WPA,
data.pairwise_cipher);
if (!selector)
selector = RSN_CIPHER_SUITE_TKIP;
wpa_auth->dot11RSNAPairwiseCipherSelected = selector;
selector = wpa_cipher_to_suite(WPA_PROTO_WPA,
data.group_cipher);
if (!selector)
selector = WPA_CIPHER_SUITE_TKIP;
wpa_auth->dot11RSNAGroupCipherSelected = selector;
}
if (res) {
wpa_printf(MSG_DEBUG, "Failed to parse WPA/RSN IE from "
MACSTR " (res=%d)", MAC2STR(sm->addr), res);
wpa_hexdump(MSG_DEBUG, "WPA/RSN IE", wpa_ie, wpa_ie_len);
return WPA_INVALID_IE;
}
if (data.group_cipher != wpa_auth->conf.wpa_group) {
wpa_printf(MSG_DEBUG, "Invalid WPA group cipher (0x%x) from "
MACSTR, data.group_cipher, MAC2STR(sm->addr));
return WPA_INVALID_GROUP;
}
key_mgmt = data.key_mgmt & wpa_auth->conf.wpa_key_mgmt;
if (!key_mgmt) {
wpa_printf(MSG_DEBUG, "Invalid WPA key mgmt (0x%x) from "
MACSTR, data.key_mgmt, MAC2STR(sm->addr));
return WPA_INVALID_AKMP;
}
if (0) {
}
#ifdef CONFIG_IEEE80211R
else if (key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X)
sm->wpa_key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X;
else if (key_mgmt & WPA_KEY_MGMT_FT_PSK)
sm->wpa_key_mgmt = WPA_KEY_MGMT_FT_PSK;
#endif /* CONFIG_IEEE80211R */
#ifdef CONFIG_IEEE80211W
else if (key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256)
sm->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256;
else if (key_mgmt & WPA_KEY_MGMT_PSK_SHA256)
sm->wpa_key_mgmt = WPA_KEY_MGMT_PSK_SHA256;
#endif /* CONFIG_IEEE80211W */
#ifdef CONFIG_SAE
else if (key_mgmt & WPA_KEY_MGMT_SAE)
sm->wpa_key_mgmt = WPA_KEY_MGMT_SAE;
else if (key_mgmt & WPA_KEY_MGMT_FT_SAE)
sm->wpa_key_mgmt = WPA_KEY_MGMT_FT_SAE;
#endif /* CONFIG_SAE */
else if (key_mgmt & WPA_KEY_MGMT_IEEE8021X)
sm->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X;
else
sm->wpa_key_mgmt = WPA_KEY_MGMT_PSK;
if (version == WPA_PROTO_RSN)
ciphers = data.pairwise_cipher & wpa_auth->conf.rsn_pairwise;
else
ciphers = data.pairwise_cipher & wpa_auth->conf.wpa_pairwise;
if (!ciphers) {
wpa_printf(MSG_DEBUG, "Invalid %s pairwise cipher (0x%x) "
"from " MACSTR,
version == WPA_PROTO_RSN ? "RSN" : "WPA",
data.pairwise_cipher, MAC2STR(sm->addr));
return WPA_INVALID_PAIRWISE;
}
#ifdef CONFIG_IEEE80211W
if (wpa_auth->conf.ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
if (!(data.capabilities & WPA_CAPABILITY_MFPC)) {
wpa_printf(MSG_DEBUG, "Management frame protection "
"required, but client did not enable it");
return WPA_MGMT_FRAME_PROTECTION_VIOLATION;
}
if (ciphers & WPA_CIPHER_TKIP) {
wpa_printf(MSG_DEBUG, "Management frame protection "
"cannot use TKIP");
return WPA_MGMT_FRAME_PROTECTION_VIOLATION;
}
if (data.mgmt_group_cipher != WPA_CIPHER_AES_128_CMAC) {
wpa_printf(MSG_DEBUG, "Unsupported management group "
"cipher %d", data.mgmt_group_cipher);
return WPA_INVALID_MGMT_GROUP_CIPHER;
}
}
if (wpa_auth->conf.ieee80211w == NO_MGMT_FRAME_PROTECTION ||
!(data.capabilities & WPA_CAPABILITY_MFPC))
sm->mgmt_frame_prot = 0;
else
sm->mgmt_frame_prot = 1;
#endif /* CONFIG_IEEE80211W */
#ifdef CONFIG_IEEE80211R
if (wpa_key_mgmt_ft(sm->wpa_key_mgmt)) {
if (mdie == NULL || mdie_len < MOBILITY_DOMAIN_ID_LEN + 1) {
wpa_printf(MSG_DEBUG, "RSN: Trying to use FT, but "
"MDIE not included");
return WPA_INVALID_MDIE;
}
if (os_memcmp(mdie, wpa_auth->conf.mobility_domain,
MOBILITY_DOMAIN_ID_LEN) != 0) {
wpa_hexdump(MSG_DEBUG, "RSN: Attempted to use unknown "
"MDIE", mdie, MOBILITY_DOMAIN_ID_LEN);
return WPA_INVALID_MDIE;
}
}
#endif /* CONFIG_IEEE80211R */
if (ciphers & WPA_CIPHER_CCMP)
sm->pairwise = WPA_CIPHER_CCMP;
else if (ciphers & WPA_CIPHER_GCMP)
sm->pairwise = WPA_CIPHER_GCMP;
else
sm->pairwise = WPA_CIPHER_TKIP;
/* TODO: clear WPA/WPA2 state if STA changes from one to another */
if (wpa_ie[0] == WLAN_EID_RSN)
sm->wpa = WPA_VERSION_WPA2;
else
sm->wpa = WPA_VERSION_WPA;
sm->pmksa = NULL;
for (i = 0; i < data.num_pmkid; i++) {
wpa_hexdump(MSG_DEBUG, "RSN IE: STA PMKID",
&data.pmkid[i * PMKID_LEN], PMKID_LEN);
sm->pmksa = pmksa_cache_auth_get(wpa_auth->pmksa, sm->addr,
&data.pmkid[i * PMKID_LEN]);
if (sm->pmksa) {
pmkid = sm->pmksa->pmkid;
break;
}
}
for (i = 0; sm->pmksa == NULL && wpa_auth->conf.okc &&
i < data.num_pmkid; i++) {
struct wpa_auth_okc_iter_data idata;
idata.pmksa = NULL;
idata.aa = wpa_auth->addr;
idata.spa = sm->addr;
idata.pmkid = &data.pmkid[i * PMKID_LEN];
wpa_auth_for_each_auth(wpa_auth, wpa_auth_okc_iter, &idata);
if (idata.pmksa) {
wpa_auth_vlogger(wpa_auth, sm->addr, LOGGER_DEBUG,
"OKC match for PMKID");
sm->pmksa = pmksa_cache_add_okc(wpa_auth->pmksa,
idata.pmksa,
wpa_auth->addr,
idata.pmkid);
pmkid = idata.pmkid;
break;
}
}
if (sm->pmksa) {
wpa_auth_vlogger(wpa_auth, sm->addr, LOGGER_DEBUG,
"PMKID found from PMKSA cache "
"eap_type=%d vlan_id=%d",
sm->pmksa->eap_type_authsrv,
sm->pmksa->vlan_id);
os_memcpy(wpa_auth->dot11RSNAPMKIDUsed, pmkid, PMKID_LEN);
}
if (sm->wpa_ie == NULL || sm->wpa_ie_len < wpa_ie_len) {
os_free(sm->wpa_ie);
sm->wpa_ie = os_malloc(wpa_ie_len);
if (sm->wpa_ie == NULL)
return WPA_ALLOC_FAIL;
}
os_memcpy(sm->wpa_ie, wpa_ie, wpa_ie_len);
sm->wpa_ie_len = wpa_ie_len;
return WPA_IE_OK;
}
u8 * wpa_sm_write_assoc_resp_ies(struct wpa_state_machine *sm, u8 *pos,
size_t max_len, int auth_alg,
const u8 *req_ies, size_t req_ies_len)
{
u8 *end, *mdie, *ftie, *rsnie = NULL, *r0kh_id, *subelem = NULL;
size_t mdie_len, ftie_len, rsnie_len = 0, r0kh_id_len, subelem_len = 0;
int res;
struct wpa_auth_config *conf;
struct rsn_ftie *_ftie;
struct wpa_ft_ies parse;
u8 *ric_start;
u8 *anonce, *snonce;
if (sm == NULL)
return pos;
conf = &sm->wpa_auth->conf;
if (!wpa_key_mgmt_ft(sm->wpa_key_mgmt))
return pos;
end = pos + max_len;
if (auth_alg == WLAN_AUTH_FT) {
/*
* RSN (only present if this is a Reassociation Response and
* part of a fast BSS transition)
*/
res = wpa_write_rsn_ie(conf, pos, end - pos, sm->pmk_r1_name);
if (res < 0)
return pos;
rsnie = pos;
rsnie_len = res;
pos += res;
}
/* Mobility Domain Information */
res = wpa_write_mdie(conf, pos, end - pos);
if (res < 0)
return pos;
mdie = pos;
mdie_len = res;
pos += res;
/* Fast BSS Transition Information */
if (auth_alg == WLAN_AUTH_FT) {
subelem = wpa_ft_gtk_subelem(sm, &subelem_len);
r0kh_id = sm->r0kh_id;
r0kh_id_len = sm->r0kh_id_len;
anonce = sm->ANonce;
snonce = sm->SNonce;
#ifdef CONFIG_IEEE80211W
if (sm->mgmt_frame_prot) {
u8 *igtk;
size_t igtk_len;
u8 *nbuf;
igtk = wpa_ft_igtk_subelem(sm, &igtk_len);
if (igtk == NULL) {
os_free(subelem);
return pos;
}
nbuf = os_realloc(subelem, subelem_len + igtk_len);
if (nbuf == NULL) {
os_free(subelem);
os_free(igtk);
return pos;
}
subelem = nbuf;
os_memcpy(subelem + subelem_len, igtk, igtk_len);
subelem_len += igtk_len;
os_free(igtk);
}
#endif /* CONFIG_IEEE80211W */
} else {
r0kh_id = conf->r0_key_holder;
r0kh_id_len = conf->r0_key_holder_len;
anonce = NULL;
snonce = NULL;
}
res = wpa_write_ftie(conf, r0kh_id, r0kh_id_len, anonce, snonce, pos,
end - pos, subelem, subelem_len);
os_free(subelem);
if (res < 0)
return pos;
ftie = pos;
ftie_len = res;
pos += res;
os_free(sm->assoc_resp_ftie);
sm->assoc_resp_ftie = os_malloc(ftie_len);
if (sm->assoc_resp_ftie)
os_memcpy(sm->assoc_resp_ftie, ftie, ftie_len);
_ftie = (struct rsn_ftie *) (ftie + 2);
if (auth_alg == WLAN_AUTH_FT)
_ftie->mic_control[1] = 3; /* Information element count */
ric_start = pos;
if (wpa_ft_parse_ies(req_ies, req_ies_len, &parse) == 0 && parse.ric) {
pos = wpa_ft_process_ric(sm, pos, end, parse.ric,
parse.ric_len);
if (auth_alg == WLAN_AUTH_FT)
_ftie->mic_control[1] +=
ieee802_11_ie_count(ric_start,
pos - ric_start);
}
if (ric_start == pos)
ric_start = NULL;
if (auth_alg == WLAN_AUTH_FT &&
wpa_ft_mic(sm->PTK.kck, sm->addr, sm->wpa_auth->addr, 6,
mdie, mdie_len, ftie, ftie_len,
rsnie, rsnie_len,
ric_start, ric_start ? pos - ric_start : 0,
_ftie->mic) < 0)
wpa_printf(MSG_DEBUG, "FT: Failed to calculate MIC");
return pos;
}
void sme_authenticate(struct wpa_supplicant *wpa_s,
struct wpa_bss *bss, struct wpa_ssid *ssid)
{
struct wpa_driver_auth_params params;
struct wpa_ssid *old_ssid;
#ifdef CONFIG_IEEE80211R
const u8 *ie;
#endif /* CONFIG_IEEE80211R */
#ifdef CONFIG_IEEE80211R
const u8 *md = NULL;
#endif /* CONFIG_IEEE80211R */
int i, bssid_changed;
if (bss == NULL) {
wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
"the network");
return;
}
wpa_s->current_bss = bss;
os_memset(¶ms, 0, sizeof(params));
wpa_s->reassociate = 0;
params.freq = bss->freq;
params.bssid = bss->bssid;
params.ssid = bss->ssid;
params.ssid_len = bss->ssid_len;
params.p2p = ssid->p2p_group;
if (wpa_s->sme.ssid_len != params.ssid_len ||
os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
wpa_s->sme.prev_bssid_set = 0;
wpa_s->sme.freq = params.freq;
os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
wpa_s->sme.ssid_len = params.ssid_len;
params.auth_alg = WPA_AUTH_ALG_OPEN;
#ifdef IEEE8021X_EAPOL
if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
if (ssid->leap) {
if (ssid->non_leap == 0)
params.auth_alg = WPA_AUTH_ALG_LEAP;
else
params.auth_alg |= WPA_AUTH_ALG_LEAP;
}
}
#endif /* IEEE8021X_EAPOL */
wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
params.auth_alg);
if (ssid->auth_alg) {
params.auth_alg = ssid->auth_alg;
wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
"0x%x", params.auth_alg);
}
for (i = 0; i < NUM_WEP_KEYS; i++) {
if (ssid->wep_key_len[i])
params.wep_key[i] = ssid->wep_key[i];
params.wep_key_len[i] = ssid->wep_key_len[i];
}
params.wep_tx_keyidx = ssid->wep_tx_keyidx;
bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
os_memset(wpa_s->bssid, 0, ETH_ALEN);
os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
if (bssid_changed)
wpas_notify_bssid_changed(wpa_s);
if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
wpa_key_mgmt_wpa(ssid->key_mgmt)) {
int try_opportunistic;
try_opportunistic = ssid->proactive_key_caching &&
(ssid->proto & WPA_PROTO_RSN);
if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
wpa_s->current_ssid,
try_opportunistic) == 0)
eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
wpa_s->sme.assoc_req_ie,
&wpa_s->sme.assoc_req_ie_len)) {
wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
"key management and encryption suites");
return;
}
} else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
wpa_s->sme.assoc_req_ie,
&wpa_s->sme.assoc_req_ie_len)) {
wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
"key management and encryption suites (no "
"scan results)");
return;
}
#ifdef CONFIG_WPS
} else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
struct wpabuf *wps_ie;
wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
if (wps_ie && wpabuf_len(wps_ie) <=
sizeof(wpa_s->sme.assoc_req_ie)) {
wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
wpa_s->sme.assoc_req_ie_len);
} else
wpa_s->sme.assoc_req_ie_len = 0;
wpabuf_free(wps_ie);
wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
#endif /* CONFIG_WPS */
} else {
wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
wpa_s->sme.assoc_req_ie_len = 0;
}
#ifdef CONFIG_IEEE80211R
ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
md = ie + 2;
wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
if (md) {
/* Prepare for the next transition */
wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
}
if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) {
if (wpa_s->sme.assoc_req_ie_len + 5 <
sizeof(wpa_s->sme.assoc_req_ie)) {
struct rsn_mdie *mdie;
u8 *pos = wpa_s->sme.assoc_req_ie +
wpa_s->sme.assoc_req_ie_len;
*pos++ = WLAN_EID_MOBILITY_DOMAIN;
*pos++ = sizeof(*mdie);
mdie = (struct rsn_mdie *) pos;
os_memcpy(mdie->mobility_domain, md,
MOBILITY_DOMAIN_ID_LEN);
mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
wpa_s->sme.assoc_req_ie_len += 5;
}
if (wpa_s->sme.ft_used &&
os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
wpa_sm_has_ptk(wpa_s->wpa)) {
wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
"over-the-air");
params.auth_alg = WPA_AUTH_ALG_FT;
params.ie = wpa_s->sme.ft_ies;
params.ie_len = wpa_s->sme.ft_ies_len;
}
}
#endif /* CONFIG_IEEE80211R */
#ifdef CONFIG_IEEE80211W
wpa_s->sme.mfp = ssid->ieee80211w;
if (ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
struct wpa_ie_data _ie;
if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
_ie.capabilities &
(WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
"MFP: require MFP");
wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
}
}
#endif /* CONFIG_IEEE80211W */
#ifdef CONFIG_P2P
if (wpa_s->global->p2p) {
u8 *pos;
size_t len;
int res;
pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
len = sizeof(wpa_s->sme.assoc_req_ie) -
wpa_s->sme.assoc_req_ie_len;
res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
ssid->p2p_group);
if (res >= 0)
wpa_s->sme.assoc_req_ie_len += res;
}
#endif /* CONFIG_P2P */
#ifdef CONFIG_INTERWORKING
if (wpa_s->conf->interworking) {
u8 *pos = wpa_s->sme.assoc_req_ie;
if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
pos += 2 + pos[1];
os_memmove(pos + 6, pos,
wpa_s->sme.assoc_req_ie_len -
(pos - wpa_s->sme.assoc_req_ie));
wpa_s->sme.assoc_req_ie_len += 6;
*pos++ = WLAN_EID_EXT_CAPAB;
*pos++ = 4;
*pos++ = 0x00;
*pos++ = 0x00;
*pos++ = 0x00;
*pos++ = 0x80; /* Bit 31 - Interworking */
}
#endif /* CONFIG_INTERWORKING */
wpa_supplicant_cancel_sched_scan(wpa_s);
wpa_supplicant_cancel_scan(wpa_s);
wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
" (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
wpa_clear_keys(wpa_s, bss->bssid);
wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
old_ssid = wpa_s->current_ssid;
wpa_s->current_ssid = ssid;
wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
wpa_supplicant_initiate_eapol(wpa_s);
if (old_ssid != wpa_s->current_ssid)
wpas_notify_network_changed(wpa_s);
wpa_s->sme.auth_alg = params.auth_alg;
if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) {
wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
"driver failed");
wpa_supplicant_req_scan(wpa_s, 1, 0);
return;
}
eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
NULL);
/*
* Association will be started based on the authentication event from
* the driver.
*/
}
int wpa_ft_validate_reassoc_resp(struct wpa_sm *sm, const u8 *ies,
size_t ies_len, const u8 *src_addr)
{
struct wpa_ft_ies parse;
struct rsn_mdie *mdie;
struct rsn_ftie *ftie;
unsigned int count;
u8 mic[WPA_EAPOL_KEY_MIC_MAX_LEN];
wpa_hexdump(MSG_DEBUG, "FT: Response IEs", ies, ies_len);
if (!wpa_key_mgmt_ft(sm->key_mgmt)) {
wpa_printf(MSG_DEBUG, "FT: Reject FT IEs since FT is not "
"enabled for this connection");
return -1;
}
if (wpa_ft_parse_ies(ies, ies_len, &parse) < 0) {
wpa_printf(MSG_DEBUG, "FT: Failed to parse IEs");
return -1;
}
mdie = (struct rsn_mdie *) parse.mdie;
if (mdie == NULL || parse.mdie_len < sizeof(*mdie) ||
os_memcmp(mdie->mobility_domain, sm->mobility_domain,
MOBILITY_DOMAIN_ID_LEN) != 0) {
wpa_printf(MSG_DEBUG, "FT: Invalid MDIE");
return -1;
}
ftie = (struct rsn_ftie *) parse.ftie;
if (ftie == NULL || parse.ftie_len < sizeof(*ftie)) {
wpa_printf(MSG_DEBUG, "FT: Invalid FTIE");
return -1;
}
if (os_memcmp(ftie->snonce, sm->snonce, WPA_NONCE_LEN) != 0) {
wpa_printf(MSG_DEBUG, "FT: SNonce mismatch in FTIE");
wpa_hexdump(MSG_DEBUG, "FT: Received SNonce",
ftie->snonce, WPA_NONCE_LEN);
wpa_hexdump(MSG_DEBUG, "FT: Expected SNonce",
sm->snonce, WPA_NONCE_LEN);
return -1;
}
if (os_memcmp(ftie->anonce, sm->anonce, WPA_NONCE_LEN) != 0) {
wpa_printf(MSG_DEBUG, "FT: ANonce mismatch in FTIE");
wpa_hexdump(MSG_DEBUG, "FT: Received ANonce",
ftie->anonce, WPA_NONCE_LEN);
wpa_hexdump(MSG_DEBUG, "FT: Expected ANonce",
sm->anonce, WPA_NONCE_LEN);
return -1;
}
if (parse.r0kh_id == NULL) {
wpa_printf(MSG_DEBUG, "FT: No R0KH-ID subelem in FTIE");
return -1;
}
if (parse.r0kh_id_len != sm->r0kh_id_len ||
os_memcmp_const(parse.r0kh_id, sm->r0kh_id, parse.r0kh_id_len) != 0)
{
wpa_printf(MSG_DEBUG, "FT: R0KH-ID in FTIE did not match with "
"the current R0KH-ID");
wpa_hexdump(MSG_DEBUG, "FT: R0KH-ID in FTIE",
parse.r0kh_id, parse.r0kh_id_len);
wpa_hexdump(MSG_DEBUG, "FT: The current R0KH-ID",
sm->r0kh_id, sm->r0kh_id_len);
return -1;
}
if (parse.r1kh_id == NULL) {
wpa_printf(MSG_DEBUG, "FT: No R1KH-ID subelem in FTIE");
return -1;
}
if (os_memcmp_const(parse.r1kh_id, sm->r1kh_id, FT_R1KH_ID_LEN) != 0) {
wpa_printf(MSG_DEBUG, "FT: Unknown R1KH-ID used in "
"ReassocResp");
return -1;
}
if (parse.rsn_pmkid == NULL ||
os_memcmp_const(parse.rsn_pmkid, sm->pmk_r1_name, WPA_PMK_NAME_LEN))
{
wpa_printf(MSG_DEBUG, "FT: No matching PMKR1Name (PMKID) in "
"RSNIE (pmkid=%d)", !!parse.rsn_pmkid);
return -1;
}
count = 3;
if (parse.ric)
count += ieee802_11_ie_count(parse.ric, parse.ric_len);
if (ftie->mic_control[1] != count) {
wpa_printf(MSG_DEBUG, "FT: Unexpected IE count in MIC "
"Control: received %u expected %u",
ftie->mic_control[1], count);
return -1;
}
if (wpa_ft_mic(sm->ptk.kck, sm->ptk.kck_len, sm->own_addr, src_addr, 6,
parse.mdie - 2, parse.mdie_len + 2,
parse.ftie - 2, parse.ftie_len + 2,
parse.rsn - 2, parse.rsn_len + 2,
parse.ric, parse.ric_len,
mic) < 0) {
wpa_printf(MSG_DEBUG, "FT: Failed to calculate MIC");
return -1;
}
if (os_memcmp_const(mic, ftie->mic, 16) != 0) {
wpa_printf(MSG_DEBUG, "FT: Invalid MIC in FTIE");
wpa_hexdump(MSG_MSGDUMP, "FT: Received MIC", ftie->mic, 16);
wpa_hexdump(MSG_MSGDUMP, "FT: Calculated MIC", mic, 16);
return -1;
}
if (wpa_ft_process_gtk_subelem(sm, parse.gtk, parse.gtk_len) < 0)
return -1;
#ifdef CONFIG_IEEE80211W
if (wpa_ft_process_igtk_subelem(sm, parse.igtk, parse.igtk_len) < 0)
return -1;
#endif /* CONFIG_IEEE80211W */
if (sm->set_ptk_after_assoc) {
wpa_printf(MSG_DEBUG, "FT: Try to set PTK again now that we "
"are associated");
if (wpa_ft_install_ptk(sm, src_addr) < 0)
return -1;
sm->set_ptk_after_assoc = 0;
}
if (parse.ric) {
wpa_hexdump(MSG_MSGDUMP, "FT: RIC Response",
parse.ric, parse.ric_len);
/* TODO: parse response and inform driver about results when
* using wpa_supplicant SME */
}
wpa_printf(MSG_DEBUG, "FT: Completed successfully");
return 0;
}
static int hostapd_config_check_bss(struct hostapd_bss_config *bss,
struct hostapd_config *conf,
int full_config)
{
if (full_config && bss->ieee802_1x && !bss->eap_server &&
!bss->radius->auth_servers) {
wpa_printf(MSG_ERROR, "Invalid IEEE 802.1X configuration (no "
"EAP authenticator configured).");
return -1;
}
if (bss->wpa) {
int wep, i;
wep = bss->default_wep_key_len > 0 ||
bss->individual_wep_key_len > 0;
for (i = 0; i < NUM_WEP_KEYS; i++) {
if (bss->ssid.wep.keys_set) {
wep = 1;
break;
}
}
if (wep) {
wpa_printf(MSG_ERROR, "WEP configuration in a WPA network is not supported");
return -1;
}
}
if (full_config && bss->wpa &&
bss->wpa_psk_radius != PSK_RADIUS_IGNORED &&
bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) {
wpa_printf(MSG_ERROR, "WPA-PSK using RADIUS enabled, but no "
"RADIUS checking (macaddr_acl=2) enabled.");
return -1;
}
if (full_config && bss->wpa && (bss->wpa_key_mgmt & WPA_KEY_MGMT_PSK) &&
bss->ssid.wpa_psk == NULL && bss->ssid.wpa_passphrase == NULL &&
bss->ssid.wpa_psk_file == NULL &&
(bss->wpa_psk_radius != PSK_RADIUS_REQUIRED ||
bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH)) {
wpa_printf(MSG_ERROR, "WPA-PSK enabled, but PSK or passphrase "
"is not configured.");
return -1;
}
if (full_config && !is_zero_ether_addr(bss->bssid)) {
size_t i;
for (i = 0; i < conf->num_bss; i++) {
if (conf->bss[i] != bss &&
(hostapd_mac_comp(conf->bss[i]->bssid,
bss->bssid) == 0)) {
wpa_printf(MSG_ERROR, "Duplicate BSSID " MACSTR
" on interface '%s' and '%s'.",
MAC2STR(bss->bssid),
conf->bss[i]->iface, bss->iface);
return -1;
}
}
}
#ifdef CONFIG_IEEE80211R
if (full_config && wpa_key_mgmt_ft(bss->wpa_key_mgmt) &&
(bss->nas_identifier == NULL ||
os_strlen(bss->nas_identifier) < 1 ||
os_strlen(bss->nas_identifier) > FT_R0KH_ID_MAX_LEN)) {
wpa_printf(MSG_ERROR, "FT (IEEE 802.11r) requires "
"nas_identifier to be configured as a 1..48 octet "
"string");
return -1;
}
#endif /* CONFIG_IEEE80211R */
#ifdef CONFIG_IEEE80211N
if (full_config && conf->ieee80211n &&
conf->hw_mode == HOSTAPD_MODE_IEEE80211B) {
bss->disable_11n = 1;
wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) in 11b mode is not "
"allowed, disabling HT capabilities");
}
if (full_config && conf->ieee80211n &&
bss->ssid.security_policy == SECURITY_STATIC_WEP) {
bss->disable_11n = 1;
wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WEP is not "
"allowed, disabling HT capabilities");
}
if (full_config && conf->ieee80211n && bss->wpa &&
!(bss->wpa_pairwise & WPA_CIPHER_CCMP) &&
!(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256)))
{
bss->disable_11n = 1;
wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WPA/WPA2 "
"requires CCMP/GCMP to be enabled, disabling HT "
"capabilities");
}
#endif /* CONFIG_IEEE80211N */
#ifdef CONFIG_IEEE80211AC
if (full_config && conf->ieee80211ac &&
bss->ssid.security_policy == SECURITY_STATIC_WEP) {
bss->disable_11ac = 1;
wpa_printf(MSG_ERROR,
"VHT (IEEE 802.11ac) with WEP is not allowed, disabling VHT capabilities");
}
#endif /* CONFIG_IEEE80211AC */
#ifdef CONFIG_WPS
if (full_config && bss->wps_state && bss->ignore_broadcast_ssid) {
wpa_printf(MSG_INFO, "WPS: ignore_broadcast_ssid "
"configuration forced WPS to be disabled");
bss->wps_state = 0;
}
if (full_config && bss->wps_state &&
bss->ssid.wep.keys_set && bss->wpa == 0) {
wpa_printf(MSG_INFO, "WPS: WEP configuration forced WPS to be "
"disabled");
bss->wps_state = 0;
}
if (full_config && bss->wps_state && bss->wpa &&
(!(bss->wpa & 2) ||
!(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)))) {
wpa_printf(MSG_INFO, "WPS: WPA/TKIP configuration without "
"WPA2/CCMP/GCMP forced WPS to be disabled");
bss->wps_state = 0;
}
#endif /* CONFIG_WPS */
#ifdef CONFIG_HS20
if (full_config && bss->hs20 &&
(!(bss->wpa & 2) ||
!(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
WPA_CIPHER_CCMP_256 |
WPA_CIPHER_GCMP_256)))) {
wpa_printf(MSG_ERROR, "HS 2.0: WPA2-Enterprise/CCMP "
"configuration is required for Hotspot 2.0 "
"functionality");
return -1;
}
#endif /* CONFIG_HS20 */
#ifdef CONFIG_MBO
if (full_config && bss->mbo_enabled && (bss->wpa & 2) &&
bss->ieee80211w == NO_MGMT_FRAME_PROTECTION) {
wpa_printf(MSG_ERROR,
"MBO: PMF needs to be enabled whenever using WPA2 with MBO");
return -1;
}
#endif /* CONFIG_MBO */
return 0;
}
void sme_authenticate(struct wpa_supplicant *wpa_s,
struct wpa_bss *bss, struct wpa_ssid *ssid)
{
struct wpa_driver_auth_params params;
struct wpa_ssid *old_ssid;
#ifdef CONFIG_IEEE80211R
const u8 *ie;
#endif /* CONFIG_IEEE80211R */
#ifdef CONFIG_IEEE80211R
const u8 *md = NULL;
#endif /* CONFIG_IEEE80211R */
int i, bssid_changed;
#if defined(ANDROID_P2P) && defined(WIFI_EAGLE)
int freq = 0;
#endif /* ANDROID_P2P && WIFI_EAGLE */
if (bss == NULL) {
wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
"the network");
return;
}
wpa_s->current_bss = bss;
os_memset(¶ms, 0, sizeof(params));
wpa_s->reassociate = 0;
params.freq = bss->freq;
params.bssid = bss->bssid;
params.ssid = bss->ssid;
params.ssid_len = bss->ssid_len;
params.p2p = ssid->p2p_group;
if (wpa_s->sme.ssid_len != params.ssid_len ||
os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
wpa_s->sme.prev_bssid_set = 0;
wpa_s->sme.freq = params.freq;
os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
wpa_s->sme.ssid_len = params.ssid_len;
params.auth_alg = WPA_AUTH_ALG_OPEN;
#ifdef IEEE8021X_EAPOL
if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
if (ssid->leap) {
if (ssid->non_leap == 0)
params.auth_alg = WPA_AUTH_ALG_LEAP;
else
params.auth_alg |= WPA_AUTH_ALG_LEAP;
}
}
#endif /* IEEE8021X_EAPOL */
wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
params.auth_alg);
if (ssid->auth_alg) {
params.auth_alg = ssid->auth_alg;
wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
"0x%x", params.auth_alg);
}
for (i = 0; i < NUM_WEP_KEYS; i++) {
if (ssid->wep_key_len[i])
params.wep_key[i] = ssid->wep_key[i];
params.wep_key_len[i] = ssid->wep_key_len[i];
}
params.wep_tx_keyidx = ssid->wep_tx_keyidx;
bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
os_memset(wpa_s->bssid, 0, ETH_ALEN);
os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
if (bssid_changed)
wpas_notify_bssid_changed(wpa_s);
if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
wpa_key_mgmt_wpa(ssid->key_mgmt)) {
int try_opportunistic;
try_opportunistic = ssid->proactive_key_caching &&
(ssid->proto & WPA_PROTO_RSN);
if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
wpa_s->current_ssid,
try_opportunistic) == 0)
eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
wpa_s->sme.assoc_req_ie,
&wpa_s->sme.assoc_req_ie_len)) {
wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
"key management and encryption suites");
return;
}
} else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
/*
* Both WPA and non-WPA IEEE 802.1X enabled in configuration -
* use non-WPA since the scan results did not indicate that the
* AP is using WPA or WPA2.
*/
wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
wpa_s->sme.assoc_req_ie_len = 0;
} else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
wpa_s->sme.assoc_req_ie,
&wpa_s->sme.assoc_req_ie_len)) {
wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
"key management and encryption suites (no "
"scan results)");
return;
}
#ifdef CONFIG_WPS
} else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
struct wpabuf *wps_ie;
wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
if (wps_ie && wpabuf_len(wps_ie) <=
sizeof(wpa_s->sme.assoc_req_ie)) {
wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
wpa_s->sme.assoc_req_ie_len);
} else
wpa_s->sme.assoc_req_ie_len = 0;
wpabuf_free(wps_ie);
wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
#endif /* CONFIG_WPS */
} else {
wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
wpa_s->sme.assoc_req_ie_len = 0;
}
#ifdef CONFIG_IEEE80211R
ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
md = ie + 2;
wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
if (md) {
/* Prepare for the next transition */
wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
}
if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) {
if (wpa_s->sme.assoc_req_ie_len + 5 <
sizeof(wpa_s->sme.assoc_req_ie)) {
struct rsn_mdie *mdie;
u8 *pos = wpa_s->sme.assoc_req_ie +
wpa_s->sme.assoc_req_ie_len;
*pos++ = WLAN_EID_MOBILITY_DOMAIN;
*pos++ = sizeof(*mdie);
mdie = (struct rsn_mdie *) pos;
os_memcpy(mdie->mobility_domain, md,
MOBILITY_DOMAIN_ID_LEN);
mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
wpa_s->sme.assoc_req_ie_len += 5;
}
if (wpa_s->sme.ft_used &&
os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
wpa_sm_has_ptk(wpa_s->wpa)) {
wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
"over-the-air");
params.auth_alg = WPA_AUTH_ALG_FT;
params.ie = wpa_s->sme.ft_ies;
params.ie_len = wpa_s->sme.ft_ies_len;
}
}
#endif /* CONFIG_IEEE80211R */
#ifdef CONFIG_IEEE80211W
wpa_s->sme.mfp = ssid->ieee80211w;
if (ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
struct wpa_ie_data _ie;
if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
_ie.capabilities &
(WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
"MFP: require MFP");
wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
}
}
#endif /* CONFIG_IEEE80211W */
#ifdef CONFIG_P2P
if (wpa_s->global->p2p) {
u8 *pos;
size_t len;
int res;
pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
len = sizeof(wpa_s->sme.assoc_req_ie) -
wpa_s->sme.assoc_req_ie_len;
res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
ssid->p2p_group);
if (res >= 0)
wpa_s->sme.assoc_req_ie_len += res;
}
#endif /* CONFIG_P2P */
#ifdef CONFIG_HS20
if (wpa_s->conf->hs20) {
struct wpabuf *hs20;
hs20 = wpabuf_alloc(20);
if (hs20) {
wpas_hs20_add_indication(hs20);
os_memcpy(wpa_s->sme.assoc_req_ie +
wpa_s->sme.assoc_req_ie_len,
wpabuf_head(hs20), wpabuf_len(hs20));
wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
wpabuf_free(hs20);
}
}
#endif /* CONFIG_HS20 */
#ifdef CONFIG_INTERWORKING
if (wpa_s->conf->interworking) {
u8 *pos = wpa_s->sme.assoc_req_ie;
if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
pos += 2 + pos[1];
os_memmove(pos + 6, pos,
wpa_s->sme.assoc_req_ie_len -
(pos - wpa_s->sme.assoc_req_ie));
wpa_s->sme.assoc_req_ie_len += 6;
*pos++ = WLAN_EID_EXT_CAPAB;
*pos++ = 4;
*pos++ = 0x00;
*pos++ = 0x00;
*pos++ = 0x00;
*pos++ = 0x80; /* Bit 31 - Interworking */
}
#endif /* CONFIG_INTERWORKING */
wpa_supplicant_cancel_sched_scan(wpa_s);
wpa_supplicant_cancel_scan(wpa_s);
wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
" (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
wpa_clear_keys(wpa_s, bss->bssid);
wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
old_ssid = wpa_s->current_ssid;
wpa_s->current_ssid = ssid;
wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
wpa_supplicant_initiate_eapol(wpa_s);
if (old_ssid != wpa_s->current_ssid)
wpas_notify_network_changed(wpa_s);
wpa_s->sme.auth_alg = params.auth_alg;
#if defined(ANDROID_P2P) && defined(WIFI_EAGLE)
/* If multichannel concurrency is not supported, check for any frequency
* conflict and take appropriate action.
*/
wpa_printf(MSG_DEBUG, "%s EAGLE: Priority choose", __func__);
if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT) &&
((freq = wpa_drv_shared_freq(wpa_s)) > 0) && (freq != params.freq)) {
wpa_printf(MSG_DEBUG, "Shared interface with conflicting frequency found (%d != %d)"
, freq, params.freq);
if (wpas_p2p_handle_frequency_conflicts(wpa_s, params.freq) < 0) {
/* Handling conflicts failed. Disable the current connect req and
* notify the userspace to take appropriate action */
wpa_printf(MSG_DEBUG, "proiritize is not set. Notifying user space to handle the case");
wpa_supplicant_disable_network(wpa_s, ssid);
wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_FREQ_CONFLICT
" id=%d", ssid->id);
os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
return;
}
}
#endif /* ANDROID_P2P && WIFI_EAGLE */
if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) {
wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
"driver failed");
wpas_connection_failed(wpa_s, bss->bssid);
wpa_supplicant_mark_disassoc(wpa_s);
return;
}
eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
NULL);
/*
* Association will be started based on the authentication event from
* the driver.
*/
}
/**
* wpa_supplicant_send_2_of_4 - Send message 2 of WPA/RSN 4-Way Handshake
* @sm: Pointer to WPA state machine data from wpa_sm_init()
* @dst: Destination address for the frame
* @key: Pointer to the EAPOL-Key frame header
* @ver: Version bits from EAPOL-Key Key Info
* @nonce: Nonce value for the EAPOL-Key frame
* @wpa_ie: WPA/RSN IE
* @wpa_ie_len: Length of the WPA/RSN IE
* @ptk: PTK to use for keyed hash and encryption
* Returns: 0 on success, -1 on failure
*/
int wpa_supplicant_send_2_of_4(struct wpa_sm *sm, const unsigned char *dst,
const struct wpa_eapol_key *key,
int ver, const u8 *nonce,
const u8 *wpa_ie, size_t wpa_ie_len,
struct wpa_ptk *ptk)
{
size_t rlen;
struct wpa_eapol_key *reply;
u8 *rbuf;
u8 *rsn_ie_buf = NULL;
if (wpa_ie == NULL) {
wpa_printf(MSG_WARNING, "WPA: No wpa_ie set - cannot "
"generate msg 2/4");
return -1;
}
#ifdef CONFIG_IEEE80211R
if (wpa_key_mgmt_ft(sm->key_mgmt)) {
int res;
/*
* Add PMKR1Name into RSN IE (PMKID-List) and add MDIE and
* FTIE from (Re)Association Response.
*/
rsn_ie_buf = os_malloc(wpa_ie_len + 2 + 2 + PMKID_LEN +
sm->assoc_resp_ies_len);
if (rsn_ie_buf == NULL)
return -1;
os_memcpy(rsn_ie_buf, wpa_ie, wpa_ie_len);
res = wpa_insert_pmkid(rsn_ie_buf, wpa_ie_len,
sm->pmk_r1_name);
if (res < 0) {
os_free(rsn_ie_buf);
return -1;
}
wpa_ie_len += res;
if (sm->assoc_resp_ies) {
os_memcpy(rsn_ie_buf + wpa_ie_len, sm->assoc_resp_ies,
sm->assoc_resp_ies_len);
wpa_ie_len += sm->assoc_resp_ies_len;
}
wpa_ie = rsn_ie_buf;
}
#endif /* CONFIG_IEEE80211R */
wpa_hexdump(MSG_DEBUG, "WPA: WPA IE for msg 2/4", wpa_ie, wpa_ie_len);
rbuf = wpa_sm_alloc_eapol(sm, IEEE802_1X_TYPE_EAPOL_KEY,
NULL, sizeof(*reply) + wpa_ie_len,
&rlen, (void *) &reply);
if (rbuf == NULL) {
os_free(rsn_ie_buf);
return -1;
}
reply->type = sm->proto == WPA_PROTO_RSN ?
EAPOL_KEY_TYPE_RSN : EAPOL_KEY_TYPE_WPA;
WPA_PUT_BE16(reply->key_info,
ver | WPA_KEY_INFO_KEY_TYPE | WPA_KEY_INFO_MIC);
if (sm->proto == WPA_PROTO_RSN)
WPA_PUT_BE16(reply->key_length, 0);
else
os_memcpy(reply->key_length, key->key_length, 2);
os_memcpy(reply->replay_counter, key->replay_counter,
WPA_REPLAY_COUNTER_LEN);
WPA_PUT_BE16(reply->key_data_length, wpa_ie_len);
os_memcpy(reply + 1, wpa_ie, wpa_ie_len);
os_free(rsn_ie_buf);
os_memcpy(reply->key_nonce, nonce, WPA_NONCE_LEN);
wpa_printf(MSG_DEBUG, "WPA: Sending EAPOL-Key 2/4");
wpa_eapol_key_send(sm, ptk->kck, ver, dst, ETH_P_EAPOL,
rbuf, rlen, reply->key_mic);
return 0;
}
