static char * wpa_supplicant_ie_txt(char *pos, char *end, const char *proto,
const u8 *ie, size_t ie_len)
{
struct wpa_ie_data data;
int first, ret;
ret = os_snprintf(pos, end - pos, "[%s-", proto);
if (ret < 0 || ret >= end - pos)
return pos;
pos += ret;
if (wpa_parse_wpa_ie(ie, ie_len, &data) < 0) {
ret = os_snprintf(pos, end - pos, "?]");
if (ret < 0 || ret >= end - pos)
return pos;
pos += ret;
return pos;
}
first = 1;
if (data.key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
ret = os_snprintf(pos, end - pos, "%sEAP", first ? "" : "+");
if (ret < 0 || ret >= end - pos)
return pos;
pos += ret;
first = 0;
}
if (data.key_mgmt & WPA_KEY_MGMT_PSK) {
ret = os_snprintf(pos, end - pos, "%sPSK", first ? "" : "+");
if (ret < 0 || ret >= end - pos)
return pos;
pos += ret;
first = 0;
}
if (data.key_mgmt & WPA_KEY_MGMT_WPA_NONE) {
ret = os_snprintf(pos, end - pos, "%sNone", first ? "" : "+");
if (ret < 0 || ret >= end - pos)
return pos;
pos += ret;
first = 0;
}
pos = wpa_supplicant_cipher_txt(pos, end, data.pairwise_cipher);
if (data.capabilities & WPA_CAPABILITY_PREAUTH) {
ret = os_snprintf(pos, end - pos, "-preauth");
if (ret < 0 || ret >= end - pos)
return pos;
pos += ret;
}
ret = os_snprintf(pos, end - pos, "]");
if (ret < 0 || ret >= end - pos)
return pos;
pos += ret;
return pos;
}
/**
* rsn_preauth_scan_results - Process scan results to find PMKSA candidates
* @sm: Pointer to WPA state machine data from wpa_sm_init()
* @results: Scan results
*
* This functions goes through the scan results and adds all suitable APs
* (Authenticators) into PMKSA candidate list.
*/
void rsn_preauth_scan_results(struct wpa_sm *sm,
struct wpa_scan_results *results)
{
struct wpa_scan_res *r;
struct wpa_ie_data ie;
int i;
struct rsn_pmksa_cache_entry *pmksa;
if (sm->ssid_len == 0)
return;
/*
* TODO: is it ok to free all candidates? What about the entries
* received from EVENT_PMKID_CANDIDATE?
*/
pmksa_candidate_free(sm);
for (i = results->num - 1; i >= 0; i--) {
const u8 *ssid, *rsn;
r = results->res[i];
ssid = wpa_scan_get_ie(r, WLAN_EID_SSID);
if (ssid == NULL || ssid[1] != sm->ssid_len ||
os_memcmp(ssid + 2, sm->ssid, ssid[1]) != 0)
continue;
if (os_memcmp(r->bssid, sm->bssid, ETH_ALEN) == 0)
continue;
rsn = wpa_scan_get_ie(r, WLAN_EID_RSN);
if (rsn == NULL || wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ie))
continue;
pmksa = pmksa_cache_get(sm->pmksa, r->bssid, NULL);
if (pmksa &&
(!pmksa->opportunistic ||
!(ie.capabilities & WPA_CAPABILITY_PREAUTH)))
continue;
/*
* Give less priority to candidates found from normal
* scan results.
*/
pmksa_candidate_add(sm, r->bssid,
PMKID_CANDIDATE_PRIO_SCAN,
ie.capabilities & WPA_CAPABILITY_PREAUTH);
}
}
/**
* rsn_preauth_scan_results - Process scan results to find PMKSA candidates
* @sm: Pointer to WPA state machine data from wpa_sm_init()
* @results: Scan results
* @count: Number of BSSes in scan results
*
* This functions goes through the scan results and adds all suitable APs
* (Authenticators) into PMKSA candidate list.
*/
void rsn_preauth_scan_results(struct wpa_sm *sm,
struct wpa_scan_result *results, int count)
{
struct wpa_scan_result *r;
struct wpa_ie_data ie;
int i;
struct rsn_pmksa_cache *pmksa;
if (sm->cur_ssid == NULL)
return;
/*
* TODO: is it ok to free all candidates? What about the entries
* received from EVENT_PMKID_CANDIDATE?
*/
pmksa_candidate_free(sm);
for (i = count - 1; i >= 0; i--) {
r = &results[i];
if (r->ssid_len != sm->cur_ssid->ssid_len ||
memcmp(r->ssid, sm->cur_ssid->ssid,
r->ssid_len) != 0)
continue;
if (memcmp(r->bssid, sm->bssid, ETH_ALEN) == 0)
continue;
if (r->rsn_ie_len == 0 ||
wpa_parse_wpa_ie(r->rsn_ie, r->rsn_ie_len, &ie))
continue;
pmksa = pmksa_cache_get(sm, r->bssid, NULL);
if (pmksa &&
(!pmksa->opportunistic ||
!(ie.capabilities & WPA_CAPABILITY_PREAUTH)))
continue;
/*
* Give less priority to candidates found from normal
* scan results.
*/
pmksa_candidate_add(sm, r->bssid,
PMKID_CANDIDATE_PRIO_SCAN,
ie.capabilities & WPA_CAPABILITY_PREAUTH);
}
}
/* TODO: schedule periodic scans if current AP supports preauth */
void rsn_preauth_scan_results(struct wpa_supplicant *wpa_s,
struct wpa_scan_result *results, int count)
{
struct wpa_scan_result *r;
struct wpa_ie_data ie;
int i;
struct rsn_pmksa_cache *pmksa;
if (wpa_s->current_ssid == NULL)
return;
pmksa_candidate_free(wpa_s);
for (i = count - 1; i >= 0; i--) {
r = &results[i];
if (r->ssid_len != wpa_s->current_ssid->ssid_len ||
memcmp(r->ssid, wpa_s->current_ssid->ssid,
r->ssid_len) != 0)
continue;
if (memcmp(r->bssid, wpa_s->bssid, ETH_ALEN) == 0)
continue;
if (r->rsn_ie_len == 0 ||
wpa_parse_wpa_ie(wpa_s, r->rsn_ie, r->rsn_ie_len, &ie))
continue;
pmksa = pmksa_cache_get(wpa_s, r->bssid, NULL);
if (pmksa &&
(!pmksa->opportunistic ||
!(ie.capabilities & WPA_CAPABILITY_PREAUTH)))
continue;
/*
* Give less priority to candidates found from normal
* scan results.
*/
pmksa_candidate_add(wpa_s, r->bssid,
PMKID_CANDIDATE_PRIO_SCAN,
ie.capabilities & WPA_CAPABILITY_PREAUTH);
}
}
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.
*/
}
static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
struct wpa_ssid *ssid,
const struct wps_credential *cred)
{
struct wpa_driver_capa capa;
struct wpa_bss *bss;
const u8 *ie;
struct wpa_ie_data adv;
int wpa2 = 0, ccmp = 0;
/*
* Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
* case they are configured for mixed mode operation (WPA+WPA2 and
* TKIP+CCMP). Try to use scan results to figure out whether the AP
* actually supports stronger security and select that if the client
* has support for it, too.
*/
if (wpa_drv_get_capa(wpa_s, &capa))
return; /* Unknown what driver supports */
bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
if (bss == NULL) {
wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
"table - use credential as-is");
return;
}
wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
wpa2 = 1;
if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
ccmp = 1;
} else {
ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
adv.pairwise_cipher & WPA_CIPHER_CCMP)
ccmp = 1;
}
if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
(ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
/*
* TODO: This could be the initial AP configuration and the
* Beacon contents could change shortly. Should request a new
* scan and delay addition of the network until the updated
* scan results are available.
*/
wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
"support - use credential as-is");
return;
}
if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
(ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
(capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
"based on scan results");
if (wpa_s->conf->ap_scan == 1)
ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
else
ssid->pairwise_cipher = WPA_CIPHER_CCMP;
}
if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
(ssid->proto & WPA_PROTO_WPA) &&
(capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
"based on scan results");
if (wpa_s->conf->ap_scan == 1)
ssid->proto |= WPA_PROTO_RSN;
else
ssid->proto = WPA_PROTO_RSN;
}
}
static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
struct wpa_ssid *ssid,
struct wpa_scan_res *bss)
{
struct wpa_ie_data ie;
int proto_match = 0;
const u8 *rsn_ie, *wpa_ie;
int ret;
ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
if (ret >= 0)
return ret;
rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
proto_match++;
if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
wpa_printf(MSG_DEBUG, " skip RSN IE - parse failed");
break;
}
if (!(ie.proto & ssid->proto)) {
wpa_printf(MSG_DEBUG, " skip RSN IE - proto "
"mismatch");
break;
}
if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
wpa_printf(MSG_DEBUG, " skip RSN IE - PTK cipher "
"mismatch");
break;
}
if (!(ie.group_cipher & ssid->group_cipher)) {
wpa_printf(MSG_DEBUG, " skip RSN IE - GTK cipher "
"mismatch");
break;
}
if (!(ie.key_mgmt & ssid->key_mgmt)) {
wpa_printf(MSG_DEBUG, " skip RSN IE - key mgmt "
"mismatch");
break;
}
#ifdef CONFIG_IEEE80211W
if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
ssid->ieee80211w == IEEE80211W_REQUIRED) {
wpa_printf(MSG_DEBUG, " skip RSN IE - no mgmt frame "
"protection");
break;
}
#endif /* CONFIG_IEEE80211W */
wpa_printf(MSG_DEBUG, " selected based on RSN IE");
return 1;
}
wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
proto_match++;
if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
wpa_printf(MSG_DEBUG, " skip WPA IE - parse failed");
break;
}
if (!(ie.proto & ssid->proto)) {
wpa_printf(MSG_DEBUG, " skip WPA IE - proto "
"mismatch");
break;
}
if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
wpa_printf(MSG_DEBUG, " skip WPA IE - PTK cipher "
"mismatch");
break;
}
if (!(ie.group_cipher & ssid->group_cipher)) {
wpa_printf(MSG_DEBUG, " skip WPA IE - GTK cipher "
"mismatch");
break;
}
if (!(ie.key_mgmt & ssid->key_mgmt)) {
wpa_printf(MSG_DEBUG, " skip WPA IE - key mgmt "
"mismatch");
break;
}
wpa_printf(MSG_DEBUG, " selected based on WPA IE");
return 1;
}
if (proto_match == 0)
wpa_printf(MSG_DEBUG, " skip - no WPA/RSN proto match");
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);
}
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_printf(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;
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_printf(MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
params.auth_alg);
if (ssid->auth_alg) {
params.auth_alg = ssid->auth_alg;
wpa_printf(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)) &&
(ssid->key_mgmt & (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
WPA_KEY_MGMT_FT_IEEE8021X |
WPA_KEY_MGMT_FT_PSK |
WPA_KEY_MGMT_IEEE8021X_SHA256 |
WPA_KEY_MGMT_PSK_SHA256))) {
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_printf(MSG_WARNING, "SME: Failed to set WPA key "
"management and encryption suites");
return;
}
} else if (ssid->key_mgmt &
(WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
WPA_KEY_MGMT_WPA_NONE | WPA_KEY_MGMT_FT_PSK |
WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_PSK_SHA256 |
WPA_KEY_MGMT_IEEE8021X_SHA256)) {
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_printf(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 && ssid->key_mgmt & (WPA_KEY_MGMT_FT_PSK |
WPA_KEY_MGMT_FT_IEEE8021X)) {
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_printf(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_printf(MSG_DEBUG, "WPA: Selected AP supports MFP: "
"require MFP");
wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
}
}
#endif /* CONFIG_IEEE80211W */
wpa_supplicant_cancel_scan(wpa_s);
wpa_msg(wpa_s, MSG_INFO, "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, "Authentication request to the "
"driver failed");
wpa_supplicant_req_scan(wpa_s, 1, 0);
return;
}
/* TODO: add timeout on authentication */
/*
* Association will be started based on the authentication event from
* the driver.
*/
}
static dladm_wlan_ess_t *
wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s, struct wpa_ssid *group,
dladm_wlan_ess_t *results, int num, struct wpa_ssid **selected_ssid)
{
struct wpa_ssid *ssid;
dladm_wlan_ess_t *bss, *selected = NULL;
int i;
struct wpa_ie_data ie;
wpa_printf(MSG_DEBUG, "Selecting BSS from scan results (%d)", num);
bss = NULL;
ssid = NULL;
/* try to find matched AP */
for (i = 0; i < num && !selected; i++) {
bss = &results[i];
wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
"wpa_ie_len=%d",
i, MAC2STR(bss->we_bssid.wb_bytes),
wpa_ssid_txt(bss->we_ssid.we_bytes, bss->we_ssid_len),
bss->we_wpa_ie_len);
if (bss->we_wpa_ie_len == 0) {
wpa_printf(MSG_DEBUG, " skip - no WPA/RSN IE");
}
ssid = group;
if (bss->we_ssid_len != ssid->ssid_len ||
memcmp(bss->we_ssid.we_bytes, ssid->ssid,
bss->we_ssid_len) != 0) {
wpa_printf(MSG_DEBUG, " skip - SSID mismatch");
continue;
}
if (!((ssid->proto & (WPA_PROTO_RSN | WPA_PROTO_WPA)) &&
wpa_parse_wpa_ie(wpa_s, bss->we_wpa_ie,
bss->we_wpa_ie_len, &ie) == 0)) {
wpa_printf(MSG_DEBUG, " skip - "
"could not parse WPA/RSN IE");
continue;
}
if (!(ie.proto & ssid->proto)) {
wpa_printf(MSG_DEBUG, " skip - proto mismatch");
continue;
}
if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
wpa_printf(MSG_DEBUG, " skip - PTK cipher mismatch");
continue;
}
if (!(ie.group_cipher & ssid->group_cipher)) {
wpa_printf(MSG_DEBUG, " skip - GTK cipher mismatch");
continue;
}
if (!(ie.key_mgmt & ssid->key_mgmt)) {
wpa_printf(MSG_DEBUG, " skip - key mgmt mismatch");
continue;
}
selected = bss;
*selected_ssid = ssid;
wpa_printf(MSG_DEBUG, " selected");
}
return (selected);
}
static int
wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
dladm_wlan_ess_t *bss, struct wpa_ssid *ssid,
uint8_t *wpa_ie, int *wpa_ie_len)
{
struct wpa_ie_data ie;
int sel, proto;
uint8_t *ap_ie;
size_t ap_ie_len;
/* RSN or WPA */
if (bss->we_wpa_ie_len && bss->we_wpa_ie[0] == RSN_INFO_ELEM &&
(ssid->proto & WPA_PROTO_RSN)) {
wpa_printf(MSG_DEBUG, "RSN: using IEEE 802.11i/D9.0");
proto = WPA_PROTO_RSN;
} else {
wpa_printf(MSG_DEBUG, "WPA: using IEEE 802.11i/D3.0");
proto = WPA_PROTO_WPA;
}
ap_ie = bss->we_wpa_ie;
ap_ie_len = bss->we_wpa_ie_len;
if (wpa_parse_wpa_ie(wpa_s, ap_ie, ap_ie_len, &ie)) {
wpa_printf(MSG_WARNING, "WPA: Failed to parse WPA IE for "
"the selected BSS.");
return (-1);
}
wpa_s->proto = proto;
free(wpa_s->ap_wpa_ie);
wpa_s->ap_wpa_ie = malloc(ap_ie_len);
(void) memcpy(wpa_s->ap_wpa_ie, ap_ie, ap_ie_len);
wpa_s->ap_wpa_ie_len = ap_ie_len;
sel = ie.group_cipher & ssid->group_cipher;
if (sel & WPA_CIPHER_CCMP) {
wpa_s->group_cipher = WPA_CIPHER_CCMP;
} else if (sel & WPA_CIPHER_TKIP) {
wpa_s->group_cipher = WPA_CIPHER_TKIP;
} else if (sel & WPA_CIPHER_WEP104) {
wpa_s->group_cipher = WPA_CIPHER_WEP104;
} else if (sel & WPA_CIPHER_WEP40) {
wpa_s->group_cipher = WPA_CIPHER_WEP40;
} else {
wpa_printf(MSG_WARNING, "WPA: Failed to select group cipher.");
return (-1);
}
sel = ie.pairwise_cipher & ssid->pairwise_cipher;
if (sel & WPA_CIPHER_CCMP) {
wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
} else if (sel & WPA_CIPHER_TKIP) {
wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
} else if (sel & WPA_CIPHER_NONE) {
wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
} else {
wpa_printf(MSG_WARNING, "WPA: Failed to select pairwise "
"cipher.");
return (-1);
}
sel = ie.key_mgmt & ssid->key_mgmt;
if (sel & WPA_KEY_MGMT_IEEE8021X) {
wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
} else if (sel & WPA_KEY_MGMT_PSK) {
wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
} else {
wpa_printf(MSG_WARNING, "WPA: Failed to select authenticated "
"key management type.");
return (-1);
}
*wpa_ie_len = wpa_gen_wpa_ie(wpa_s, wpa_ie);
if (*wpa_ie_len < 0) {
wpa_printf(MSG_WARNING, "WPA: Failed to generate WPA IE.");
return (-1);
}
wpa_hexdump(MSG_DEBUG, "WPA: Own WPA IE", wpa_ie, *wpa_ie_len);
if (ssid->key_mgmt & WPA_KEY_MGMT_PSK)
(void) memcpy(wpa_s->pmk, ssid->psk, PMK_LEN);
else if (wpa_s->cur_pmksa)
(void) memcpy(wpa_s->pmk, wpa_s->cur_pmksa->pmk, PMK_LEN);
else {
(void) memset(wpa_s->pmk, 0, PMK_LEN);
}
return (0);
}
static int wpa_supplicant_ssid_bss_match(struct wpa_ssid *ssid,
struct wpa_scan_result *bss)
{
struct wpa_ie_data ie;
int proto_match = 0;
while ((ssid->proto & WPA_PROTO_RSN) && bss->rsn_ie_len > 0) {
proto_match++;
if (wpa_parse_wpa_ie(bss->rsn_ie, bss->rsn_ie_len, &ie)) {
wpa_printf(MSG_DEBUG, " skip RSN IE - parse failed");
break;
}
if (!(ie.proto & ssid->proto)) {
wpa_printf(MSG_DEBUG, " skip RSN IE - proto "
"mismatch");
break;
}
if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
wpa_printf(MSG_DEBUG, " skip RSN IE - PTK cipher "
"mismatch");
break;
}
/* carella modify */
#ifndef CONFIG_DRIVER_RALINK
if (!(ie.group_cipher & ssid->group_cipher)) {
wpa_printf(MSG_DEBUG, " skip RSN IE - GTK cipher "
"mismatch");
break;
}
#endif
if (!(ie.key_mgmt & ssid->key_mgmt)) {
wpa_printf(MSG_DEBUG, " skip RSN IE - key mgmt "
"mismatch");
break;
}
#ifdef CONFIG_IEEE80211W
if (!(ie.capabilities & WPA_CAPABILITY_MGMT_FRAME_PROTECTION)
&& ssid->ieee80211w == IEEE80211W_REQUIRED) {
wpa_printf(MSG_DEBUG, " skip RSN IE - no mgmt frame "
"protection");
break;
}
#endif /* CONFIG_IEEE80211W */
wpa_printf(MSG_DEBUG, " selected based on RSN IE");
return 1;
}
while ((ssid->proto & WPA_PROTO_WPA) && bss->wpa_ie_len > 0) {
proto_match++;
if (wpa_parse_wpa_ie(bss->wpa_ie, bss->wpa_ie_len, &ie)) {
wpa_printf(MSG_DEBUG, " skip WPA IE - parse failed");
break;
}
if (!(ie.proto & ssid->proto)) {
wpa_printf(MSG_DEBUG, " skip WPA IE - proto "
"mismatch");
break;
}
if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
wpa_printf(MSG_DEBUG, " skip WPA IE - PTK cipher "
"mismatch");
break;
}
/* carella modify */
#ifndef CONFIG_DRIVER_RALINK
if (!(ie.group_cipher & ssid->group_cipher)) {
wpa_printf(MSG_DEBUG, " skip WPA IE - GTK cipher "
"mismatch");
break;
}
#endif
if (!(ie.key_mgmt & ssid->key_mgmt)) {
wpa_printf(MSG_DEBUG, " skip WPA IE - key mgmt "
"mismatch");
break;
}
wpa_printf(MSG_DEBUG, " selected based on WPA IE");
return 1;
}
if (proto_match == 0)
wpa_printf(MSG_DEBUG, " skip - no WPA/RSN proto match");
return 0;
}
