/* Format one result on one text line into a buffer. */
static int wpa_supplicant_ctrl_iface_scan_result(
const struct wpa_scan_res *res, char *buf, size_t buflen)
{
char *pos, *end;
int ret;
const u8 *ie, *ie2;
pos = buf;
end = buf + buflen;
ret = os_snprintf(pos, end - pos, MACSTR "\t%d\t%d\t",
MAC2STR(res->bssid), res->freq, res->level);
if (ret < 0 || ret >= end - pos)
return -1;
pos += ret;
ie = wpa_scan_get_vendor_ie(res, WPA_IE_VENDOR_TYPE);
if (ie)
pos = wpa_supplicant_ie_txt(pos, end, "WPA", ie, 2 + ie[1]);
ie2 = wpa_scan_get_ie(res, WLAN_EID_RSN);
if (ie2)
pos = wpa_supplicant_ie_txt(pos, end, "WPA2", ie2, 2 + ie2[1]);
pos = wpa_supplicant_wps_ie_txt(pos, end, res);
if (!ie && !ie2 && res->caps & IEEE80211_CAP_PRIVACY) {
ret = os_snprintf(pos, end - pos, "[WEP]");
if (ret < 0 || ret >= end - pos)
return -1;
pos += ret;
}
/* Just to make the fields line up nicely when printed */
if (!ie && !ie2) {
ret = os_snprintf(pos, end - pos, "\t");
if (ret < 0 || ret >= end - pos)
return -1;
pos += ret;
}
ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
if (res->caps & IEEE80211_CAP_IBSS)
ret = os_snprintf(pos, end - pos, "\t%s%s", "(*)",
wpa_ssid_txt(ie + 2, ie[1]));
else
ret = os_snprintf(pos, end - pos, "\t%s",
ie ? wpa_ssid_txt(ie + 2, ie[1]) : "");
if (ret < 0 || ret >= end - pos)
return -1;
pos += ret;
ret = os_snprintf(pos, end - pos, "\n");
if (ret < 0 || ret >= end - pos)
return -1;
pos += ret;
return pos - buf;
}
static struct wpa_bss *
wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
struct wpa_scan_results *scan_res,
struct wpa_ssid *group,
struct wpa_ssid **selected_ssid)
{
size_t i;
wpa_printf(MSG_DEBUG, "Selecting BSS from priority group %d",
group->priority);
for (i = 0; i < scan_res->num; i++) {
struct wpa_scan_res *bss = scan_res->res[i];
const u8 *ie, *ssid;
u8 ssid_len;
*selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
if (!*selected_ssid)
continue;
ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
ssid = ie ? ie + 2 : (u8 *) "";
ssid_len = ie ? ie[1] : 0;
wpa_printf(MSG_DEBUG, " selected BSS " MACSTR " ssid='%s'",
MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len));
return wpa_bss_get(wpa_s, bss->bssid, ssid, ssid_len);
}
return NULL;
}
static void wpa_bss_remove(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
{
dl_list_del(&bss->list);
dl_list_del(&bss->list_id);
wpa_s->num_bss--;
wpa_dbg(wpa_s, MSG_DEBUG, "BSS: Remove id %u BSSID " MACSTR
" SSID '%s'", bss->id, MAC2STR(bss->bssid),
wpa_ssid_txt(bss->ssid, bss->ssid_len));
wpas_notify_bss_removed(wpa_s, bss->bssid, bss->id);
#ifdef CONFIG_INTERWORKING
wpabuf_free(bss->anqp_venue_name);
wpabuf_free(bss->anqp_network_auth_type);
wpabuf_free(bss->anqp_roaming_consortium);
wpabuf_free(bss->anqp_ip_addr_type_availability);
wpabuf_free(bss->anqp_nai_realm);
wpabuf_free(bss->anqp_3gpp);
wpabuf_free(bss->anqp_domain_name);
#endif /* CONFIG_INTERWORKING */
#ifdef CONFIG_HS20
wpabuf_free(bss->hs20_operator_friendly_name);
wpabuf_free(bss->hs20_wan_metrics);
wpabuf_free(bss->hs20_connection_capability);
wpabuf_free(bss->hs20_operating_class);
#endif /* CONFIG_HS20 */
os_free(bss);
}
static struct wpa_bss * wpa_bss_add(struct wpa_supplicant *wpa_s,
const u8 *ssid, size_t ssid_len,
struct wpa_scan_res *res)
{
struct wpa_bss *bss;
bss = os_zalloc(sizeof(*bss) + res->ie_len + res->beacon_ie_len);
if (bss == NULL)
return NULL;
bss->id = wpa_s->bss_next_id++;
bss->last_update_idx = wpa_s->bss_update_idx;
wpa_bss_copy_res(bss, res);
os_memcpy(bss->ssid, ssid, ssid_len);
bss->ssid_len = ssid_len;
bss->ie_len = res->ie_len;
bss->beacon_ie_len = res->beacon_ie_len;
os_memcpy(bss + 1, res + 1, res->ie_len + res->beacon_ie_len);
wpa_bss_set_hessid(bss);
dl_list_add_tail(&wpa_s->bss, &bss->list);
dl_list_add_tail(&wpa_s->bss_id, &bss->list_id);
wpa_s->num_bss++;
wpa_dbg(wpa_s, MSG_DEBUG, "BSS: Add new id %u BSSID " MACSTR
" SSID '%s'",
bss->id, MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len));
wpas_notify_bss_added(wpa_s, bss->bssid, bss->id);
if (wpa_s->num_bss > wpa_s->conf->bss_max_count &&
wpa_bss_remove_oldest(wpa_s) != 0) {
wpa_printf(MSG_ERROR, "Increasing the MAX BSS count to %d "
"because all BSSes are in use. We should normally "
"not get here!", (int) wpa_s->num_bss);
wpa_s->conf->bss_max_count = wpa_s->num_bss;
}
return bss;
}
void wpas_notify_state_changed(struct wpa_supplicant *wpa_s,
enum wpa_states new_state,
enum wpa_states old_state)
{
/* notify the old DBus API */
wpa_supplicant_dbus_notify_state_change(wpa_s, new_state,
old_state);
/* notify the new DBus API */
wpas_dbus_signal_prop_changed(wpa_s, WPAS_DBUS_PROP_STATE);
#ifdef CONFIG_P2P
if (new_state == WPA_COMPLETED)
wpas_p2p_notif_connected(wpa_s);
else if (old_state >= WPA_ASSOCIATED && new_state < WPA_ASSOCIATED)
wpas_p2p_notif_disconnected(wpa_s);
#endif /* CONFIG_P2P */
sme_state_changed(wpa_s);
#ifdef ANDROID
wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_STATE_CHANGE
"id=%d state=%d BSSID=" MACSTR " SSID=%s",
wpa_s->current_ssid ? wpa_s->current_ssid->id : -1,
new_state,
MAC2STR(wpa_s->bssid),
wpa_s->current_ssid && wpa_s->current_ssid->ssid ?
wpa_ssid_txt(wpa_s->current_ssid->ssid,
wpa_s->current_ssid->ssid_len) : "");
#endif /* ANDROID */
}
static void wpa_bss_remove(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
const char *reason)
{
if (wpa_s->last_scan_res) {
unsigned int i;
for (i = 0; i < wpa_s->last_scan_res_used; i++) {
if (wpa_s->last_scan_res[i] == bss) {
os_memmove(&wpa_s->last_scan_res[i],
&wpa_s->last_scan_res[i + 1],
(wpa_s->last_scan_res_used - i - 1)
* sizeof(struct wpa_bss *));
wpa_s->last_scan_res_used--;
break;
}
}
}
wpa_bss_update_pending_connect(wpa_s, bss, NULL);
dl_list_del(&bss->list);
dl_list_del(&bss->list_id);
wpa_s->num_bss--;
wpa_dbg(wpa_s, MSG_DEBUG, "BSS: Remove id %u BSSID " MACSTR
" SSID '%s' due to %s", bss->id, MAC2STR(bss->bssid),
wpa_ssid_txt(bss->ssid, bss->ssid_len), reason);
wpas_notify_bss_removed(wpa_s, bss->bssid, bss->id);
wpa_bss_anqp_free(bss->anqp);
os_free(bss);
}
static void wpa_bss_add(struct wpa_supplicant *wpa_s,
const u8 *ssid, size_t ssid_len,
struct wpa_scan_res *res)
{
struct wpa_bss *bss;
bss = os_zalloc(sizeof(*bss) + res->ie_len + res->beacon_ie_len);
if (bss == NULL)
return;
bss->id = wpa_s->bss_next_id++;
bss->last_update_idx = wpa_s->bss_update_idx;
wpa_bss_copy_res(bss, res);
os_memcpy(bss->ssid, ssid, ssid_len);
bss->ssid_len = ssid_len;
bss->ie_len = res->ie_len;
bss->beacon_ie_len = res->beacon_ie_len;
os_memcpy(bss + 1, res + 1, res->ie_len + res->beacon_ie_len);
dl_list_add_tail(&wpa_s->bss, &bss->list);
dl_list_add_tail(&wpa_s->bss_id, &bss->list_id);
wpa_s->num_bss++;
wpa_printf(MSG_DEBUG, "BSS: Add new id %u BSSID " MACSTR " SSID '%s'",
bss->id, MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len));
wpas_notify_bss_added(wpa_s, bss->bssid, bss->id);
if (wpa_s->num_bss > wpa_s->conf->bss_max_count) {
/* Remove the oldest entry */
wpa_bss_remove(wpa_s, dl_list_first(&wpa_s->bss,
struct wpa_bss, list));
}
void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
const u8 *bssid, u16 auth_type)
{
struct wpa_driver_associate_params params;
struct ieee802_11_elems elems;
os_memset(¶ms, 0, sizeof(params));
params.bssid = bssid;
params.ssid = wpa_s->sme.ssid;
params.ssid_len = wpa_s->sme.ssid_len;
params.freq = wpa_s->sme.freq;
params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
wpa_s->sme.assoc_req_ie : NULL;
params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
#ifdef CONFIG_IEEE80211R
if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
params.wpa_ie = wpa_s->sme.ft_ies;
params.wpa_ie_len = wpa_s->sme.ft_ies_len;
}
#endif /* CONFIG_IEEE80211R */
params.mode = mode;
params.mgmt_frame_protection = wpa_s->sme.mfp;
if (wpa_s->sme.prev_bssid_set)
params.prev_bssid = wpa_s->sme.prev_bssid;
wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
" (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
params.freq);
wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
if (params.wpa_ie == NULL ||
ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
< 0) {
wpa_printf(MSG_DEBUG, "SME: Could not parse own IEs?!");
os_memset(&elems, 0, sizeof(elems));
}
if (elems.rsn_ie)
wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
elems.rsn_ie_len + 2);
else if (elems.wpa_ie)
wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
elems.wpa_ie_len + 2);
else
wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
if (wpa_drv_associate(wpa_s, ¶ms) < 0) {
wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
"failed");
//wpa_supplicant_req_scan(wpa_s, 5, 0);
ros_assoc_failed(wpa_s, bssid, "Driver request to associate failed");
return;
}
/* TODO: add timeout on association */
}
static void wpa_bss_remove(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
{
dl_list_del(&bss->list);
dl_list_del(&bss->list_id);
wpa_s->num_bss--;
wpa_printf(MSG_DEBUG, "BSS: Remove id %u BSSID " MACSTR " SSID '%s'",
bss->id, MAC2STR(bss->bssid),
wpa_ssid_txt(bss->ssid, bss->ssid_len));
wpas_notify_bss_removed(wpa_s, bss->bssid, bss->id);
os_free(bss);
}
//Start MANA
static void log_ssid(const u8 *ssid, size_t ssid_len, const u8 *mac) {
//Quick hack to output observed MACs & SSIDs
//TODO: Fix this so it works in loud mode, right now will only log an SSID once
char *mana_outfile = getenv("MANAOUTFILE");
FILE *f = fopen(mana_outfile, "a");
if (f != NULL) {
int rand=0;
if (mac[0] & 2) //Check if locally administered aka random MAC
rand=1;
fprintf(f,MACSTR ", %s, %d\n", MAC2STR(mac), wpa_ssid_txt(ssid, ssid_len), rand);
fclose(f);
}
}
static int wpa_supplicant_ctrl_iface_list_networks(
struct wpa_supplicant *wpa_s, char *buf, size_t buflen)
{
char *pos, *end;
struct wpa_ssid *ssid;
int ret;
pos = buf;
end = buf + buflen;
ret = os_snprintf(pos, end - pos,
"network id / ssid / bssid / flags\n");
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
ssid = wpa_s->conf->ssid;
while (ssid) {
ret = os_snprintf(pos, end - pos, "%d\t%s",
ssid->id,
wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
if (ssid->bssid_set) {
ret = os_snprintf(pos, end - pos, "\t" MACSTR,
MAC2STR(ssid->bssid));
} else {
ret = os_snprintf(pos, end - pos, "\tany");
}
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
ret = os_snprintf(pos, end - pos, "\t%s%s",
ssid == wpa_s->current_ssid ?
"[CURRENT]" : "",
ssid->disabled ? "[DISABLED]" : "");
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
ret = os_snprintf(pos, end - pos, "\n");
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
ssid = ssid->next;
}
return pos - buf;
}
/**
* wpa_config_debug_dump_networks - Debug dump of configured networks
* @config: Configuration data from wpa_config_read()
*/
void wpa_config_debug_dump_networks(struct wpa_config *config)
{
int prio;
struct wpa_ssid *ssid;
for (prio = 0; prio < config->num_prio; prio++) {
ssid = config->pssid[prio];
wpa_printf(MSG_DEBUG, "Priority group %d",
ssid->priority);
while (ssid) {
wpa_printf(MSG_DEBUG, " id=%d ssid='%s'",
ssid->id,
wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
ssid = ssid->pnext;
}
}
}
static int wpa_supplicant_ctrl_iface_status(struct wpa_supplicant *wpa_s,
const char *params,
char *buf, size_t buflen)
{
char *pos, *end;
int res, verbose;
verbose = strcmp(params, "-VERBOSE") == 0;
pos = buf;
end = buf + buflen;
pos += snprintf(pos, end - pos, "bssid=" MACSTR "\n",
MAC2STR(wpa_s->bssid));
if (wpa_s->current_ssid) {
pos += snprintf(pos, end - pos, "ssid=%s\n",
wpa_ssid_txt(wpa_s->current_ssid->ssid,
wpa_s->current_ssid->ssid_len));
}
pos += snprintf(pos, end - pos,
"pairwise_cipher=%s\n"
"group_cipher=%s\n"
"key_mgmt=%s\n"
"wpa_state=%s\n",
wpa_cipher_txt(wpa_s->pairwise_cipher),
wpa_cipher_txt(wpa_s->group_cipher),
wpa_key_mgmt_txt(wpa_s->key_mgmt, wpa_s->proto),
wpa_state_txt(wpa_s->wpa_state));
res = eapol_sm_get_status(wpa_s->eapol, pos, end - pos, verbose);
if (res >= 0)
pos += res;
if (wpa_s->preauth_eapol) {
pos += snprintf(pos, end - pos, "Pre-authentication "
"EAPOL state machines:\n");
res = eapol_sm_get_status(wpa_s->preauth_eapol,
pos, end - pos, verbose);
if (res >= 0)
pos += res;
}
return pos - buf;
}
static void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
dladm_wlan_ess_t *bss, struct wpa_ssid *ssid)
{
uint8_t wpa_ie[IEEE80211_MAX_OPT_IE];
int wpa_ie_len;
wpa_s->reassociate = 0;
wpa_printf(MSG_DEBUG, "Trying to associate with " MACSTR
" (SSID='%s' freq=%d MHz)", MAC2STR(bss->we_bssid.wb_bytes),
wpa_ssid_txt((char *)ssid->ssid, ssid->ssid_len), bss->we_freq);
wpa_supplicant_cancel_scan(wpa_s);
if (bss->we_wpa_ie_len &&
(ssid->key_mgmt & (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK))) {
wpa_s->cur_pmksa = pmksa_cache_get(wpa_s,
bss->we_bssid.wb_bytes, NULL);
if (wpa_s->cur_pmksa) {
wpa_hexdump(MSG_DEBUG, "RSN: PMKID",
wpa_s->cur_pmksa->pmkid, PMKID_LEN);
}
if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
wpa_ie, &wpa_ie_len)) {
wpa_printf(MSG_WARNING, "WPA: Failed to set WPA key "
"management and encryption suites");
return;
}
} else {
wpa_ie_len = 0;
}
wpa_clear_keys(wpa_s, bss->we_bssid.wb_bytes);
wpa_s->wpa_state = WPA_ASSOCIATING;
wpa_s->driver->associate(wpa_s->linkid,
(const char *)bss->we_bssid.wb_bytes, wpa_ie, wpa_ie_len);
/* Timeout for IEEE 802.11 authentication and association */
wpa_supplicant_req_auth_timeout(wpa_s, 15, 0);
}
static void wpa_supplicant_wps_event_er_ap_settings(
struct wpa_supplicant *wpa_s,
struct wps_event_er_ap_settings *ap_settings)
{
char uuid_str[100];
char key_str[65];
const struct wps_credential *cred = ap_settings->cred;
key_str[0] = '\0';
if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
if (cred->key_len >= 8 && cred->key_len <= 64) {
os_memcpy(key_str, cred->key, cred->key_len);
key_str[cred->key_len] = '\0';
}
}
uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
/* Use wpa_msg_ctrl to avoid showing the key in debug log */
wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
"uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
"key=%s",
uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
cred->auth_type, cred->encr_type, key_str);
}
void handle_probe_req(struct hostapd_data *hapd,
const struct ieee80211_mgmt *mgmt, size_t len,
int ssi_signal)
{
u8 *resp;
struct ieee802_11_elems elems;
const u8 *ie;
size_t ie_len;
size_t i, resp_len;
int noack;
enum ssid_match_result res;
int ret;
u16 csa_offs[2];
size_t csa_offs_len;
ie = mgmt->u.probe_req.variable;
if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req))
return;
if (hapd->iconf->track_sta_max_num)
sta_track_add(hapd->iface, mgmt->sa);
ie_len = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req));
for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++)
if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx,
mgmt->sa, mgmt->da, mgmt->bssid,
ie, ie_len, ssi_signal) > 0)
return;
if (!hapd->iconf->send_probe_response)
return;
if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
wpa_printf(MSG_DEBUG, "Could not parse ProbeReq from " MACSTR,
MAC2STR(mgmt->sa));
return;
}
if ((!elems.ssid || !elems.supp_rates)) {
wpa_printf(MSG_DEBUG, "STA " MACSTR " sent probe request "
"without SSID or supported rates element",
MAC2STR(mgmt->sa));
return;
}
/*
* No need to reply if the Probe Request frame was sent on an adjacent
* channel. IEEE Std 802.11-2012 describes this as a requirement for an
* AP with dot11RadioMeasurementActivated set to true, but strictly
* speaking does not allow such ignoring of Probe Request frames if
* dot11RadioMeasurementActivated is false. Anyway, this can help reduce
* number of unnecessary Probe Response frames for cases where the STA
* is less likely to see them (Probe Request frame sent on a
* neighboring, but partially overlapping, channel).
*/
if (elems.ds_params &&
hapd->iface->current_mode &&
(hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G ||
hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211B) &&
hapd->iconf->channel != elems.ds_params[0]) {
wpa_printf(MSG_DEBUG,
"Ignore Probe Request due to DS Params mismatch: chan=%u != ds.chan=%u",
hapd->iconf->channel, elems.ds_params[0]);
return;
}
#ifdef CONFIG_P2P
if (hapd->p2p && hapd->p2p_group && elems.wps_ie) {
struct wpabuf *wps;
wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
if (wps && !p2p_group_match_dev_type(hapd->p2p_group, wps)) {
wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request "
"due to mismatch with Requested Device "
"Type");
wpabuf_free(wps);
return;
}
wpabuf_free(wps);
}
if (hapd->p2p && hapd->p2p_group && elems.p2p) {
struct wpabuf *p2p;
p2p = ieee802_11_vendor_ie_concat(ie, ie_len, P2P_IE_VENDOR_TYPE);
if (p2p && !p2p_group_match_dev_id(hapd->p2p_group, p2p)) {
wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request "
"due to mismatch with Device ID");
wpabuf_free(p2p);
return;
}
wpabuf_free(p2p);
}
#endif /* CONFIG_P2P */
if (hapd->conf->ignore_broadcast_ssid && elems.ssid_len == 0 &&
elems.ssid_list_len == 0) {
wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR " for "
"broadcast SSID ignored", MAC2STR(mgmt->sa));
return;
}
#ifdef CONFIG_P2P
if ((hapd->conf->p2p & P2P_GROUP_OWNER) &&
elems.ssid_len == P2P_WILDCARD_SSID_LEN &&
os_memcmp(elems.ssid, P2P_WILDCARD_SSID,
P2P_WILDCARD_SSID_LEN) == 0) {
/* Process P2P Wildcard SSID like Wildcard SSID */
elems.ssid_len = 0;
}
#endif /* CONFIG_P2P */
res = ssid_match(hapd, elems.ssid, elems.ssid_len,
elems.ssid_list, elems.ssid_list_len);
if (res == NO_SSID_MATCH) {
if (!(mgmt->da[0] & 0x01)) {
wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
" for foreign SSID '%s' (DA " MACSTR ")%s",
MAC2STR(mgmt->sa),
wpa_ssid_txt(elems.ssid, elems.ssid_len),
MAC2STR(mgmt->da),
elems.ssid_list ? " (SSID list)" : "");
}
return;
}
#ifdef CONFIG_INTERWORKING
if (hapd->conf->interworking &&
elems.interworking && elems.interworking_len >= 1) {
u8 ant = elems.interworking[0] & 0x0f;
if (ant != INTERWORKING_ANT_WILDCARD &&
ant != hapd->conf->access_network_type) {
wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
" for mismatching ANT %u ignored",
MAC2STR(mgmt->sa), ant);
return;
}
}
if (hapd->conf->interworking && elems.interworking &&
(elems.interworking_len == 7 || elems.interworking_len == 9)) {
const u8 *hessid;
if (elems.interworking_len == 7)
hessid = elems.interworking + 1;
else
hessid = elems.interworking + 1 + 2;
if (!is_broadcast_ether_addr(hessid) &&
os_memcmp(hessid, hapd->conf->hessid, ETH_ALEN) != 0) {
wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
" for mismatching HESSID " MACSTR
" ignored",
MAC2STR(mgmt->sa), MAC2STR(hessid));
return;
}
}
#endif /* CONFIG_INTERWORKING */
#ifdef CONFIG_P2P
if ((hapd->conf->p2p & P2P_GROUP_OWNER) &&
supp_rates_11b_only(&elems)) {
/* Indicates support for 11b rates only */
wpa_printf(MSG_EXCESSIVE, "P2P: Ignore Probe Request from "
MACSTR " with only 802.11b rates",
MAC2STR(mgmt->sa));
return;
}
#endif /* CONFIG_P2P */
/* TODO: verify that supp_rates contains at least one matching rate
* with AP configuration */
if (hapd->conf->no_probe_resp_if_seen_on &&
is_multicast_ether_addr(mgmt->da) &&
is_multicast_ether_addr(mgmt->bssid) &&
sta_track_seen_on(hapd->iface, mgmt->sa,
hapd->conf->no_probe_resp_if_seen_on)) {
wpa_printf(MSG_MSGDUMP, "%s: Ignore Probe Request from " MACSTR
" since STA has been seen on %s",
hapd->conf->iface, MAC2STR(mgmt->sa),
hapd->conf->no_probe_resp_if_seen_on);
return;
}
if (hapd->conf->no_probe_resp_if_max_sta &&
is_multicast_ether_addr(mgmt->da) &&
is_multicast_ether_addr(mgmt->bssid) &&
hapd->num_sta >= hapd->conf->max_num_sta &&
!ap_get_sta(hapd, mgmt->sa)) {
wpa_printf(MSG_MSGDUMP, "%s: Ignore Probe Request from " MACSTR
" since no room for additional STA",
hapd->conf->iface, MAC2STR(mgmt->sa));
return;
}
#ifdef CONFIG_TESTING_OPTIONS
if (hapd->iconf->ignore_probe_probability > 0.0 &&
drand48() < hapd->iconf->ignore_probe_probability) {
wpa_printf(MSG_INFO,
"TESTING: ignoring probe request from " MACSTR,
MAC2STR(mgmt->sa));
return;
}
#endif /* CONFIG_TESTING_OPTIONS */
resp = hostapd_gen_probe_resp(hapd, mgmt, elems.p2p != NULL,
&resp_len);
if (resp == NULL)
return;
/*
* If this is a broadcast probe request, apply no ack policy to avoid
* excessive retries.
*/
noack = !!(res == WILDCARD_SSID_MATCH &&
is_broadcast_ether_addr(mgmt->da));
csa_offs_len = 0;
if (hapd->csa_in_progress) {
if (hapd->cs_c_off_proberesp)
csa_offs[csa_offs_len++] =
hapd->cs_c_off_proberesp;
if (hapd->cs_c_off_ecsa_proberesp)
csa_offs[csa_offs_len++] =
hapd->cs_c_off_ecsa_proberesp;
}
ret = hostapd_drv_send_mlme_csa(hapd, resp, resp_len, noack,
csa_offs_len ? csa_offs : NULL,
csa_offs_len);
if (ret < 0)
wpa_printf(MSG_INFO, "handle_probe_req: send failed");
os_free(resp);
wpa_printf(MSG_EXCESSIVE, "STA " MACSTR " sent probe request for %s "
"SSID", MAC2STR(mgmt->sa),
elems.ssid_len == 0 ? "broadcast" : "our");
}
static struct wpa_scan_res *
wpa_supplicant_select_bss_wapi(struct wpa_supplicant *wpa_s,
struct wpa_ssid *group,
struct wpa_ssid **selected_ssid)
{
struct wpa_ssid *ssid;
struct wpa_scan_res *bss;
size_t i;
struct wpa_blacklist *e;
const u8 *ie;
wpa_printf(MSG_DEBUG, "Try to find WAPI-enabled AP");
for (i = 0; i < wpa_s->scan_res->num; i++) {
const u8 *ssid_;
u8 wapi_ie_len, ssid_len;
bss = wpa_s->scan_res->res[i];
ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
ssid_ = ie ? ie + 2 : (u8 *) "";
ssid_len = ie ? ie[1] : 0;
//ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
//wpa_ie_len = ie ? ie[1] : 0;
ie = wpa_scan_get_ie(bss, WAPI_INFO_ELEM);
wapi_ie_len = ie ? ie[1] : 0;
wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
"wapi_ie_len=%u caps=0x%x",
(int) i, MAC2STR(bss->bssid),
wpa_ssid_txt(ssid_, ssid_len),
wapi_ie_len, bss->caps);
e = wpa_blacklist_get(wpa_s, bss->bssid);
if (e && e->count > 1) {
wpa_printf(MSG_DEBUG, " skip - blacklisted");
continue;
}
if (ssid_len == 0) {
wpa_printf(MSG_DEBUG, " skip - SSID not known");
continue;
}
if (wapi_ie_len == 0) {
wpa_printf(MSG_DEBUG, " skip - no WAPI IE");
continue;
}
for (ssid = group; ssid; ssid = ssid->pnext) {
int check_ssid = 1;
if (ssid->disabled) {
wpa_printf(MSG_DEBUG, " skip - disabled");
continue;
}
if (check_ssid &&
(ssid_len != ssid->ssid_len ||
os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
wpa_printf(MSG_DEBUG, " skip - "
"SSID mismatch");
continue;
}
if (ssid->bssid_set &&
os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0)
{
wpa_printf(MSG_DEBUG, " skip - "
"BSSID mismatch");
continue;
}
if (!wpa_supplicant_ssid_wapi_bss_match(wpa_s, ssid, bss))
continue;
{
/*
Record the WAPI AP's IE, will be reported to WAPI Module
*/
const u8* wapi_ie;
wapi_ie = wpa_scan_get_ie(bss, WAPI_INFO_ELEM);
wpa_s->bss_wapi_ie_len = 2 + wapi_ie[1];
os_memcpy(wpa_s->bss_wapi_ie, wapi_ie, wpa_s->bss_wapi_ie_len);
wpa_printf(MSG_DEBUG, "[WAPI-Debug ^_^] selected WAPI AP !!!!!!! Ready to connect +_+");
}
wpa_printf(MSG_DEBUG, " selected WAPI AP "
MACSTR " ssid='%s'",
MAC2STR(bss->bssid),
wpa_ssid_txt(ssid_, ssid_len));
*selected_ssid = ssid;
return bss;
}
}
return NULL;
}
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.
*/
}
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 struct wpa_scan_res *
wpa_supplicant_select_bss_non_wpa(struct wpa_supplicant *wpa_s,
struct wpa_ssid *group,
struct wpa_ssid **selected_ssid)
{
struct wpa_ssid *ssid;
struct wpa_scan_res *bss;
size_t i;
struct wpa_blacklist *e;
const u8 *ie;
wpa_printf(MSG_DEBUG, "Try to find non-WPA AP");
for (i = 0; i < wpa_s->scan_res->num; i++) {
const u8 *ssid_;
u8 wpa_ie_len, rsn_ie_len, ssid_len;
bss = wpa_s->scan_res->res[i];
ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
ssid_ = ie ? ie + 2 : (u8 *) "";
ssid_len = ie ? ie[1] : 0;
ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
wpa_ie_len = ie ? ie[1] : 0;
ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
rsn_ie_len = ie ? ie[1] : 0;
wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
"wpa_ie_len=%u rsn_ie_len=%u caps=0x%x",
(int) i, MAC2STR(bss->bssid),
wpa_ssid_txt(ssid_, ssid_len),
wpa_ie_len, rsn_ie_len, bss->caps);
e = wpa_blacklist_get(wpa_s, bss->bssid);
if (e && e->count > 1) {
wpa_printf(MSG_DEBUG, " skip - blacklisted");
continue;
}
if (ssid_len == 0) {
wpa_printf(MSG_DEBUG, " skip - SSID not known");
continue;
}
for (ssid = group; ssid; ssid = ssid->pnext) {
int check_ssid = ssid->ssid_len != 0;
if (ssid->disabled) {
wpa_printf(MSG_DEBUG, " skip - disabled");
continue;
}
#ifdef CONFIG_WPS
if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
/* Only allow wildcard SSID match if an AP
* advertises active WPS operation that matches
* with our mode. */
check_ssid = 1;
if (ssid->ssid_len == 0 &&
wpas_wps_ssid_wildcard_ok(wpa_s, ssid,
bss))
check_ssid = 0;
}
#endif /* CONFIG_WPS */
if (check_ssid &&
(ssid_len != ssid->ssid_len ||
os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
wpa_printf(MSG_DEBUG, " skip - "
"SSID mismatch");
continue;
}
if (ssid->bssid_set &&
os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0)
{
wpa_printf(MSG_DEBUG, " skip - "
"BSSID mismatch");
continue;
}
if (!(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
!(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
!(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA))
{
wpa_printf(MSG_DEBUG, " skip - "
"non-WPA network not allowed");
continue;
}
if ((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)) &&
(wpa_ie_len != 0 || rsn_ie_len != 0)) {
wpa_printf(MSG_DEBUG, " skip - "
"WPA network");
continue;
}
if (!wpa_supplicant_match_privacy(bss, ssid)) {
wpa_printf(MSG_DEBUG, " skip - "
"privacy mismatch");
continue;
}
if (bss->caps & IEEE80211_CAP_IBSS) {
wpa_printf(MSG_DEBUG, " skip - "
"IBSS (adhoc) network");
continue;
}
wpa_printf(MSG_DEBUG, " selected non-WPA AP "
MACSTR " ssid='%s'",
MAC2STR(bss->bssid),
wpa_ssid_txt(ssid_, ssid_len));
*selected_ssid = ssid;
return bss;
}
}
return NULL;
}
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);
}
int wpa_supplicant_create_ap(struct wpa_supplicant *wpa_s,
struct wpa_ssid *ssid)
{
struct wpa_driver_associate_params params;
struct hostapd_iface *hapd_iface;
struct hostapd_config *conf;
struct hostapd_data *hapd;
size_t i;
if (ssid->ssid == NULL || ssid->ssid_len == 0) {
wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
return -1;
}
wpa_supplicant_ap_deinit(wpa_s);
wpa_printf(MSG_DEBUG, "Setting up AP (SSID='%s')",
wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
os_memset(¶ms, 0, sizeof(params));
params.ssid = ssid->ssid;
params.ssid_len = ssid->ssid_len;
switch (ssid->mode) {
case WPAS_MODE_INFRA:
params.mode = IEEE80211_MODE_INFRA;
break;
case WPAS_MODE_IBSS:
params.mode = IEEE80211_MODE_IBSS;
break;
case WPAS_MODE_AP:
case WPAS_MODE_P2P_GO:
case WPAS_MODE_P2P_GROUP_FORMATION:
params.mode = IEEE80211_MODE_AP;
break;
}
params.freq = ssid->frequency;
if (ssid->key_mgmt & WPA_KEY_MGMT_PSK)
wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
else
wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
else if (ssid->pairwise_cipher & WPA_CIPHER_TKIP)
wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
else if (ssid->pairwise_cipher & WPA_CIPHER_NONE)
wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
else {
wpa_printf(MSG_WARNING, "WPA: Failed to select pairwise "
"cipher.");
return -1;
}
params.pairwise_suite = cipher_suite2driver(wpa_s->pairwise_cipher);
params.group_suite = params.pairwise_suite;
#ifdef CONFIG_P2P
if (ssid->mode == WPAS_MODE_P2P_GO ||
ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
params.p2p = 1;
wpa_drv_set_intra_bss(wpa_s, wpa_s->conf->p2p_intra_bss);
#endif /* CONFIG_P2P */
if (wpa_s->parent->set_ap_uapsd)
params.uapsd = wpa_s->parent->ap_uapsd;
else
params.uapsd = -1;
if (wpa_drv_associate(wpa_s, ¶ms) < 0) {
wpa_msg(wpa_s, MSG_INFO, "Failed to start AP functionality");
return -1;
}
wpa_s->ap_iface = hapd_iface = os_zalloc(sizeof(*wpa_s->ap_iface));
if (hapd_iface == NULL)
return -1;
hapd_iface->owner = wpa_s;
wpa_s->ap_iface->conf = conf = hostapd_config_defaults();
if (conf == NULL) {
wpa_supplicant_ap_deinit(wpa_s);
return -1;
}
if (wpa_supplicant_conf_ap(wpa_s, ssid, conf)) {
wpa_printf(MSG_ERROR, "Failed to create AP configuration");
wpa_supplicant_ap_deinit(wpa_s);
return -1;
}
#ifdef CONFIG_P2P
if (ssid->mode == WPAS_MODE_P2P_GO)
conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
P2P_GROUP_FORMATION;
#endif /* CONFIG_P2P */
hapd_iface->num_bss = conf->num_bss;
hapd_iface->bss = os_zalloc(conf->num_bss *
sizeof(struct hostapd_data *));
if (hapd_iface->bss == NULL) {
wpa_supplicant_ap_deinit(wpa_s);
return -1;
}
for (i = 0; i < conf->num_bss; i++) {
hapd_iface->bss[i] =
hostapd_alloc_bss_data(hapd_iface, conf,
&conf->bss[i]);
if (hapd_iface->bss[i] == NULL) {
wpa_supplicant_ap_deinit(wpa_s);
return -1;
}
hapd_iface->bss[i]->msg_ctx = wpa_s;
hapd_iface->bss[i]->public_action_cb = ap_public_action_rx;
hapd_iface->bss[i]->public_action_cb_ctx = wpa_s;
hapd_iface->bss[i]->vendor_action_cb = ap_vendor_action_rx;
hapd_iface->bss[i]->vendor_action_cb_ctx = wpa_s;
hostapd_register_probereq_cb(hapd_iface->bss[i],
ap_probe_req_rx, wpa_s);
hapd_iface->bss[i]->wps_reg_success_cb = ap_wps_reg_success_cb;
hapd_iface->bss[i]->wps_reg_success_cb_ctx = wpa_s;
hapd_iface->bss[i]->wps_event_cb = ap_wps_event_cb;
hapd_iface->bss[i]->wps_event_cb_ctx = wpa_s;
hapd_iface->bss[i]->sta_authorized_cb = ap_sta_authorized_cb;
hapd_iface->bss[i]->sta_authorized_cb_ctx = wpa_s;
#ifdef CONFIG_P2P
hapd_iface->bss[i]->p2p = wpa_s->global->p2p;
hapd_iface->bss[i]->p2p_group = wpas_p2p_group_init(
wpa_s, ssid->p2p_persistent_group,
ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION);
#endif /* CONFIG_P2P */
hapd_iface->bss[i]->setup_complete_cb = wpas_ap_configured_cb;
hapd_iface->bss[i]->setup_complete_cb_ctx = wpa_s;
}
os_memcpy(hapd_iface->bss[0]->own_addr, wpa_s->own_addr, ETH_ALEN);
hapd_iface->bss[0]->driver = wpa_s->driver;
hapd_iface->bss[0]->drv_priv = wpa_s->drv_priv;
wpa_s->current_ssid = ssid;
os_memcpy(wpa_s->bssid, wpa_s->own_addr, ETH_ALEN);
wpa_s->assoc_freq = ssid->frequency;
#if defined(CONFIG_AP) && defined(CONFIG_DRIVER_AR6003)
if (wpa_s->conf->p2p_max_clients > 5) {
wpa_printf(MSG_ERROR, "Cannot set max_num_sta to %d, maximum value is 5. 5 will be the value used.", wpa_s->conf->p2p_max_clients);
wpa_s->conf->p2p_max_clients = 5;
}
wpa_printf(MSG_DEBUG, "Setting max_num_sta to %d", wpa_s->conf->p2p_max_clients);
ar6003_set_max_num_sta(wpa_s->drv_priv, wpa_s->conf->p2p_max_clients);
#endif
#ifdef CONFIG_P2P
if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
hapd = hapd_iface->bss[0];
os_memcpy(hapd->iconf->country, wpa_s->conf->country, 2);
hapd->iconf->country[2] ='\0';
}
#endif
if (hostapd_setup_interface(wpa_s->ap_iface)) {
wpa_printf(MSG_ERROR, "Failed to initialize AP interface");
wpa_supplicant_ap_deinit(wpa_s);
return -1;
}
return 0;
}
static struct wpa_scan_res *
wpa_supplicant_select_bss_wpa(struct wpa_supplicant *wpa_s,
struct wpa_ssid *group,
struct wpa_ssid **selected_ssid)
{
struct wpa_ssid *ssid;
struct wpa_scan_res *bss;
size_t i;
struct wpa_blacklist *e;
const u8 *ie;
wpa_printf(MSG_DEBUG, "Try to find WPA-enabled AP");
for (i = 0; i < wpa_s->scan_res->num; i++) {
const u8 *ssid_;
u8 wpa_ie_len, rsn_ie_len, ssid_len;
bss = wpa_s->scan_res->res[i];
ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
ssid_ = ie ? ie + 2 : (u8 *) "";
ssid_len = ie ? ie[1] : 0;
ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
wpa_ie_len = ie ? ie[1] : 0;
ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
rsn_ie_len = ie ? ie[1] : 0;
wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
"wpa_ie_len=%u rsn_ie_len=%u caps=0x%x",
(int) i, MAC2STR(bss->bssid),
wpa_ssid_txt(ssid_, ssid_len),
wpa_ie_len, rsn_ie_len, bss->caps);
e = wpa_blacklist_get(wpa_s, bss->bssid);
if (e && e->count > 1) {
wpa_printf(MSG_DEBUG, " skip - blacklisted");
continue;
}
if (ssid_len == 0) {
wpa_printf(MSG_DEBUG, " skip - SSID not known");
continue;
}
if (wpa_ie_len == 0 && rsn_ie_len == 0) {
wpa_printf(MSG_DEBUG, " skip - no WPA/RSN IE");
continue;
}
for (ssid = group; ssid; ssid = ssid->pnext) {
int check_ssid = 1;
if (ssid->disabled) {
wpa_printf(MSG_DEBUG, " skip - disabled");
continue;
}
#ifdef CONFIG_WPS
if (ssid->ssid_len == 0 &&
wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
check_ssid = 0;
#endif /* CONFIG_WPS */
if (check_ssid &&
(ssid_len != ssid->ssid_len ||
os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
wpa_printf(MSG_DEBUG, " skip - "
"SSID mismatch");
continue;
}
if (ssid->bssid_set &&
os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0)
{
wpa_printf(MSG_DEBUG, " skip - "
"BSSID mismatch");
continue;
}
if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
continue;
wpa_printf(MSG_DEBUG, " selected WPA AP "
MACSTR " ssid='%s'",
MAC2STR(bss->bssid),
wpa_ssid_txt(ssid_, ssid_len));
*selected_ssid = ssid;
return bss;
}
}
return NULL;
}
static void wpa_supplicant_scan(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
struct wpa_ssid *ssid;
int ret;
struct wpabuf *extra_ie = NULL;
struct wpa_driver_scan_params params;
struct wpa_driver_scan_params *scan_params;
size_t max_ssids;
enum wpa_states prev_state;
if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
wpa_dbg(wpa_s, MSG_DEBUG, "Skip scan - interface disabled");
wpas_p2p_continue_after_scan(wpa_s);
return;
}
if (wpa_s->disconnected && wpa_s->scan_req == NORMAL_SCAN_REQ) {
wpa_dbg(wpa_s, MSG_DEBUG, "Disconnected - do not scan");
wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
wpas_p2p_continue_after_scan(wpa_s);
return;
}
if (wpa_s->scanning) {
/*
* If we are already in scanning state, we shall reschedule the
* the incoming scan request.
*/
wpa_dbg(wpa_s, MSG_DEBUG, "Already scanning - Reschedule the incoming scan req");
wpa_supplicant_req_scan(wpa_s, 1, 0);
return;
}
if (!wpa_supplicant_enabled_networks(wpa_s) &&
wpa_s->scan_req == NORMAL_SCAN_REQ) {
wpa_dbg(wpa_s, MSG_DEBUG, "No enabled networks - do not scan");
wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
wpas_p2p_continue_after_scan(wpa_s);
return;
}
if (wpa_s->conf->ap_scan != 0 &&
(wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED)) {
wpa_dbg(wpa_s, MSG_DEBUG, "Using wired authentication - "
"overriding ap_scan configuration");
wpa_s->conf->ap_scan = 0;
wpas_notify_ap_scan_changed(wpa_s);
}
if (wpa_s->conf->ap_scan == 0) {
wpa_supplicant_gen_assoc_event(wpa_s);
return;
}
#ifdef CONFIG_P2P
if (wpas_p2p_in_progress(wpa_s) || wpas_wpa_is_in_progress(wpa_s, 0)) {
if (wpa_s->sta_scan_pending &&
wpas_p2p_in_progress(wpa_s) == 2 &&
wpa_s->global->p2p_cb_on_scan_complete) {
wpa_dbg(wpa_s, MSG_DEBUG, "Process pending station "
"mode scan during P2P search");
} else {
wpa_dbg(wpa_s, MSG_DEBUG, "Delay station mode scan "
"while P2P operation is in progress");
wpa_s->sta_scan_pending = 1;
wpa_supplicant_req_scan(wpa_s, 5, 0);
return;
}
}
#endif /* CONFIG_P2P */
#ifdef CONFIG_GAS
if (gas_query_in_progress(wpa_s->gas)) {
wpa_dbg(wpa_s, MSG_DEBUG, "Delay scan while GAS query is in progress");
wpa_supplicant_req_scan(wpa_s, 1, 0);
return;
}
#endif /* CONFIG_GAS */
if (wpa_s->conf->ap_scan == 2)
max_ssids = 1;
else {
max_ssids = wpa_s->max_scan_ssids;
if (max_ssids > WPAS_MAX_SCAN_SSIDS)
max_ssids = WPAS_MAX_SCAN_SSIDS;
}
wpa_s->last_scan_req = wpa_s->scan_req;
wpa_s->scan_req = NORMAL_SCAN_REQ;
os_memset(¶ms, 0, sizeof(params));
prev_state = wpa_s->wpa_state;
if (wpa_s->wpa_state == WPA_DISCONNECTED ||
wpa_s->wpa_state == WPA_INACTIVE)
wpa_supplicant_set_state(wpa_s, WPA_SCANNING);
/*
* If autoscan has set its own scanning parameters
*/
if (wpa_s->autoscan_params != NULL) {
scan_params = wpa_s->autoscan_params;
goto scan;
}
if (wpa_s->last_scan_req != MANUAL_SCAN_REQ &&
wpa_s->connect_without_scan) {
for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
if (ssid == wpa_s->connect_without_scan)
break;
}
wpa_s->connect_without_scan = NULL;
if (ssid) {
wpa_printf(MSG_DEBUG, "Start a pre-selected network "
"without scan step");
wpa_supplicant_associate(wpa_s, NULL, ssid);
return;
}
}
#ifdef CONFIG_P2P
if ((wpa_s->p2p_in_provisioning || wpa_s->show_group_started) &&
wpa_s->go_params) {
wpa_printf(MSG_DEBUG, "P2P: Use specific SSID for scan during P2P group formation (p2p_in_provisioning=%d show_group_started=%d)",
wpa_s->p2p_in_provisioning,
wpa_s->show_group_started);
params.ssids[0].ssid = wpa_s->go_params->ssid;
params.ssids[0].ssid_len = wpa_s->go_params->ssid_len;
params.num_ssids = 1;
goto ssid_list_set;
}
#endif /* CONFIG_P2P */
/* Find the starting point from which to continue scanning */
ssid = wpa_s->conf->ssid;
if (wpa_s->prev_scan_ssid != WILDCARD_SSID_SCAN) {
while (ssid) {
if (ssid == wpa_s->prev_scan_ssid) {
ssid = ssid->next;
break;
}
ssid = ssid->next;
}
}
if (wpa_s->last_scan_req != MANUAL_SCAN_REQ &&
wpa_s->conf->ap_scan == 2) {
wpa_s->connect_without_scan = NULL;
wpa_s->prev_scan_wildcard = 0;
wpa_supplicant_assoc_try(wpa_s, ssid);
return;
} else if (wpa_s->conf->ap_scan == 2) {
/*
* User-initiated scan request in ap_scan == 2; scan with
* wildcard SSID.
*/
ssid = NULL;
} else {
struct wpa_ssid *start = ssid, *tssid;
int freqs_set = 0;
if (ssid == NULL && max_ssids > 1)
ssid = wpa_s->conf->ssid;
while (ssid) {
if (!wpas_network_disabled(wpa_s, ssid) &&
ssid->scan_ssid) {
wpa_hexdump_ascii(MSG_DEBUG, "Scan SSID",
ssid->ssid, ssid->ssid_len);
params.ssids[params.num_ssids].ssid =
ssid->ssid;
params.ssids[params.num_ssids].ssid_len =
ssid->ssid_len;
params.num_ssids++;
if (params.num_ssids + 1 >= max_ssids)
break;
}
ssid = ssid->next;
if (ssid == start)
break;
if (ssid == NULL && max_ssids > 1 &&
start != wpa_s->conf->ssid)
ssid = wpa_s->conf->ssid;
}
for (tssid = wpa_s->conf->ssid; tssid; tssid = tssid->next) {
if (wpas_network_disabled(wpa_s, tssid))
continue;
if ((params.freqs || !freqs_set) && tssid->scan_freq) {
int_array_concat(¶ms.freqs,
tssid->scan_freq);
} else {
os_free(params.freqs);
params.freqs = NULL;
}
freqs_set = 1;
}
int_array_sort_unique(params.freqs);
}
if (ssid && max_ssids == 1) {
/*
* If the driver is limited to 1 SSID at a time interleave
* wildcard SSID scans with specific SSID scans to avoid
* waiting a long time for a wildcard scan.
*/
if (!wpa_s->prev_scan_wildcard) {
params.ssids[0].ssid = NULL;
params.ssids[0].ssid_len = 0;
wpa_s->prev_scan_wildcard = 1;
wpa_dbg(wpa_s, MSG_DEBUG, "Starting AP scan for "
"wildcard SSID (Interleave with specific)");
} else {
wpa_s->prev_scan_ssid = ssid;
wpa_s->prev_scan_wildcard = 0;
wpa_dbg(wpa_s, MSG_DEBUG,
"Starting AP scan for specific SSID: %s",
wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
}
} else if (ssid) {
/* max_ssids > 1 */
wpa_s->prev_scan_ssid = ssid;
wpa_dbg(wpa_s, MSG_DEBUG, "Include wildcard SSID in "
"the scan request");
params.num_ssids++;
} else {
wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN;
params.num_ssids++;
wpa_dbg(wpa_s, MSG_DEBUG, "Starting AP scan for wildcard "
"SSID");
}
#ifdef CONFIG_P2P
ssid_list_set:
#endif /* CONFIG_P2P */
wpa_supplicant_optimize_freqs(wpa_s, ¶ms);
extra_ie = wpa_supplicant_extra_ies(wpa_s);
if (params.freqs == NULL && wpa_s->next_scan_freqs) {
wpa_dbg(wpa_s, MSG_DEBUG, "Optimize scan based on previously "
"generated frequency list");
params.freqs = wpa_s->next_scan_freqs;
} else
os_free(wpa_s->next_scan_freqs);
wpa_s->next_scan_freqs = NULL;
wpa_setband_scan_freqs(wpa_s, ¶ms);
/* See if user specified frequencies. If so, scan only those. */
if (wpa_s->conf->freq_list && !params.freqs) {
wpa_dbg(wpa_s, MSG_DEBUG,
"Optimize scan based on conf->freq_list");
int_array_concat(¶ms.freqs, wpa_s->conf->freq_list);
}
/* Use current associated channel? */
if (wpa_s->conf->scan_cur_freq && !params.freqs) {
unsigned int num = wpa_s->num_multichan_concurrent;
params.freqs = os_calloc(num + 1, sizeof(int));
if (params.freqs) {
num = get_shared_radio_freqs(wpa_s, params.freqs, num);
if (num > 0) {
wpa_dbg(wpa_s, MSG_DEBUG, "Scan only the "
"current operating channels since "
"scan_cur_freq is enabled");
} else {
os_free(params.freqs);
params.freqs = NULL;
}
}
}
params.filter_ssids = wpa_supplicant_build_filter_ssids(
wpa_s->conf, ¶ms.num_filter_ssids);
if (extra_ie) {
params.extra_ies = wpabuf_head(extra_ie);
params.extra_ies_len = wpabuf_len(extra_ie);
}
#ifdef CONFIG_P2P
if (wpa_s->p2p_in_provisioning ||
(wpa_s->show_group_started && wpa_s->go_params)) {
/*
* The interface may not yet be in P2P mode, so we have to
* explicitly request P2P probe to disable CCK rates.
*/
params.p2p_probe = 1;
}
#endif /* CONFIG_P2P */
scan_params = ¶ms;
scan:
#ifdef CONFIG_P2P
/*
* If the driver does not support multi-channel concurrency and a
* virtual interface that shares the same radio with the wpa_s interface
* is operating there may not be need to scan other channels apart from
* the current operating channel on the other virtual interface. Filter
* out other channels in case we are trying to find a connection for a
* station interface when we are not configured to prefer station
* connection and a concurrent operation is already in process.
*/
if (wpa_s->scan_for_connection &&
wpa_s->last_scan_req == NORMAL_SCAN_REQ &&
!scan_params->freqs && !params.freqs &&
wpas_is_p2p_prioritized(wpa_s) &&
wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
non_p2p_network_enabled(wpa_s)) {
unsigned int num = wpa_s->num_multichan_concurrent;
params.freqs = os_calloc(num + 1, sizeof(int));
if (params.freqs) {
num = get_shared_radio_freqs(wpa_s, params.freqs, num);
if (num > 0 && num == wpa_s->num_multichan_concurrent) {
wpa_dbg(wpa_s, MSG_DEBUG, "Scan only the current operating channels since all channels are already used");
} else {
os_free(params.freqs);
params.freqs = NULL;
}
}
}
#endif /* CONFIG_P2P */
ret = wpa_supplicant_trigger_scan(wpa_s, scan_params);
wpabuf_free(extra_ie);
os_free(params.freqs);
os_free(params.filter_ssids);
if (ret) {
wpa_msg(wpa_s, MSG_WARNING, "Failed to initiate AP scan");
if (prev_state != wpa_s->wpa_state)
wpa_supplicant_set_state(wpa_s, prev_state);
/* Restore scan_req since we will try to scan again */
wpa_s->scan_req = wpa_s->last_scan_req;
wpa_supplicant_req_scan(wpa_s, 1, 0);
} else {
wpa_s->scan_for_connection = 0;
}
}
void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
const u8 *bssid, u16 auth_type)
{
struct wpa_driver_associate_params params;
struct ieee802_11_elems elems;
#ifdef CONFIG_HT_OVERRIDES
struct ieee80211_ht_capabilities htcaps;
struct ieee80211_ht_capabilities htcaps_mask;
#endif /* CONFIG_HT_OVERRIDES */
os_memset(¶ms, 0, sizeof(params));
params.bssid = bssid;
params.ssid = wpa_s->sme.ssid;
params.ssid_len = wpa_s->sme.ssid_len;
params.freq = wpa_s->sme.freq;
params.bg_scan_period = wpa_s->current_ssid ?
wpa_s->current_ssid->bg_scan_period : -1;
params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
wpa_s->sme.assoc_req_ie : NULL;
params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
params.pairwise_suite = cipher_suite2driver(wpa_s->pairwise_cipher);
params.group_suite = cipher_suite2driver(wpa_s->group_cipher);
#ifdef CONFIG_HT_OVERRIDES
os_memset(&htcaps, 0, sizeof(htcaps));
os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
params.htcaps = (u8 *) &htcaps;
params.htcaps_mask = (u8 *) &htcaps_mask;
wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, ¶ms);
#endif /* CONFIG_HT_OVERRIDES */
#ifdef CONFIG_IEEE80211R
if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
params.wpa_ie = wpa_s->sme.ft_ies;
params.wpa_ie_len = wpa_s->sme.ft_ies_len;
}
#endif /* CONFIG_IEEE80211R */
params.mode = mode;
params.mgmt_frame_protection = wpa_s->sme.mfp;
if (wpa_s->sme.prev_bssid_set)
params.prev_bssid = wpa_s->sme.prev_bssid;
wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
" (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
params.freq);
wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
if (params.wpa_ie == NULL ||
ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
< 0) {
wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
os_memset(&elems, 0, sizeof(elems));
}
if (elems.rsn_ie) {
params.wpa_proto = WPA_PROTO_RSN;
wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
elems.rsn_ie_len + 2);
} else if (elems.wpa_ie) {
params.wpa_proto = WPA_PROTO_WPA;
wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
elems.wpa_ie_len + 2);
} else
wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
params.p2p = 1;
if (wpa_s->parent->set_sta_uapsd)
params.uapsd = wpa_s->parent->sta_uapsd;
else
params.uapsd = -1;
if (wpa_drv_associate(wpa_s, ¶ms) < 0) {
wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
"driver failed");
wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
return;
}
eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
NULL);
}
static void wpa_supplicant_scan(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
struct wpa_ssid *ssid;
int scan_req = 0, ret;
struct wpabuf *extra_ie;
struct wpa_driver_scan_params params;
size_t max_ssids;
enum wpa_states prev_state;
if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
wpa_dbg(wpa_s, MSG_DEBUG, "Skip scan - interface disabled");
return;
}
if (wpa_s->disconnected && !wpa_s->scan_req) {
wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
return;
}
if (!wpa_supplicant_enabled_networks(wpa_s->conf) &&
!wpa_s->scan_req) {
wpa_dbg(wpa_s, MSG_DEBUG, "No enabled networks - do not scan");
wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
return;
}
if (wpa_s->conf->ap_scan != 0 &&
(wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED)) {
wpa_dbg(wpa_s, MSG_DEBUG, "Using wired authentication - "
"overriding ap_scan configuration");
wpa_s->conf->ap_scan = 0;
wpas_notify_ap_scan_changed(wpa_s);
}
if (wpa_s->conf->ap_scan == 0) {
wpa_supplicant_gen_assoc_event(wpa_s);
return;
}
#ifdef CONFIG_P2P
if (wpas_p2p_in_progress(wpa_s)) {
if (wpa_s->sta_scan_pending &&
wpas_p2p_in_progress(wpa_s) == 2 &&
wpa_s->global->p2p_cb_on_scan_complete) {
wpa_dbg(wpa_s, MSG_DEBUG, "Process pending station "
"mode scan during P2P search");
} else {
wpa_dbg(wpa_s, MSG_DEBUG, "Delay station mode scan "
"while P2P operation is in progress");
wpa_s->sta_scan_pending = 1;
wpa_supplicant_req_scan(wpa_s, 5, 0);
return;
}
}
#endif /* CONFIG_P2P */
if (wpa_s->conf->ap_scan == 2)
max_ssids = 1;
else {
max_ssids = wpa_s->max_scan_ssids;
if (max_ssids > WPAS_MAX_SCAN_SSIDS)
max_ssids = WPAS_MAX_SCAN_SSIDS;
}
scan_req = wpa_s->scan_req;
wpa_s->scan_req = 0;
os_memset(¶ms, 0, sizeof(params));
prev_state = wpa_s->wpa_state;
if (wpa_s->wpa_state == WPA_DISCONNECTED ||
wpa_s->wpa_state == WPA_INACTIVE)
wpa_supplicant_set_state(wpa_s, WPA_SCANNING);
if (scan_req != 2 && wpa_s->connect_without_scan) {
for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
if (ssid == wpa_s->connect_without_scan)
break;
}
wpa_s->connect_without_scan = NULL;
if (ssid) {
wpa_printf(MSG_DEBUG, "Start a pre-selected network "
"without scan step");
wpa_supplicant_associate(wpa_s, NULL, ssid);
return;
}
}
/* Find the starting point from which to continue scanning */
ssid = wpa_s->conf->ssid;
if (wpa_s->prev_scan_ssid != WILDCARD_SSID_SCAN) {
while (ssid) {
if (ssid == wpa_s->prev_scan_ssid) {
ssid = ssid->next;
break;
}
ssid = ssid->next;
}
}
if (scan_req != 2 && wpa_s->conf->ap_scan == 2) {
wpa_s->connect_without_scan = NULL;
wpa_s->prev_scan_wildcard = 0;
wpa_supplicant_assoc_try(wpa_s, ssid);
return;
#ifndef ANDROID
} else if (wpa_s->conf->ap_scan == 2) {
/*
* User-initiated scan request in ap_scan == 2; scan with
* wildcard SSID.
*/
ssid = NULL;
#endif
} else {
struct wpa_ssid *start = ssid, *tssid;
int freqs_set = 0;
if (ssid == NULL && max_ssids > 1)
ssid = wpa_s->conf->ssid;
while (ssid) {
if (!ssid->disabled && ssid->scan_ssid) {
wpa_hexdump_ascii(MSG_DEBUG, "Scan SSID",
ssid->ssid, ssid->ssid_len);
params.ssids[params.num_ssids].ssid =
ssid->ssid;
params.ssids[params.num_ssids].ssid_len =
ssid->ssid_len;
params.num_ssids++;
if (params.num_ssids + 1 >= max_ssids)
break;
}
ssid = ssid->next;
if (ssid == start)
break;
if (ssid == NULL && max_ssids > 1 &&
start != wpa_s->conf->ssid)
ssid = wpa_s->conf->ssid;
}
for (tssid = wpa_s->conf->ssid; tssid; tssid = tssid->next) {
if (tssid->disabled)
continue;
if ((params.freqs || !freqs_set) && tssid->scan_freq) {
int_array_concat(¶ms.freqs,
tssid->scan_freq);
} else {
os_free(params.freqs);
params.freqs = NULL;
}
freqs_set = 1;
}
int_array_sort_unique(params.freqs);
}
if (ssid && max_ssids == 1) {
/*
* If the driver is limited to 1 SSID at a time interleave
* wildcard SSID scans with specific SSID scans to avoid
* waiting a long time for a wildcard scan.
*/
if (!wpa_s->prev_scan_wildcard) {
params.ssids[0].ssid = NULL;
params.ssids[0].ssid_len = 0;
wpa_s->prev_scan_wildcard = 1;
wpa_dbg(wpa_s, MSG_DEBUG, "Starting AP scan for "
"wildcard SSID (Interleave with specific)");
} else {
wpa_s->prev_scan_ssid = ssid;
wpa_s->prev_scan_wildcard = 0;
wpa_dbg(wpa_s, MSG_DEBUG,
"Starting AP scan for specific SSID: %s",
wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
}
} else if (ssid) {
/* max_ssids > 1 */
wpa_s->prev_scan_ssid = ssid;
wpa_dbg(wpa_s, MSG_DEBUG, "Include wildcard SSID in "
"the scan request");
params.num_ssids++;
} else {
wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN;
params.num_ssids++;
wpa_dbg(wpa_s, MSG_DEBUG, "Starting AP scan for wildcard "
"SSID");
}
wpa_supplicant_optimize_freqs(wpa_s, ¶ms);
extra_ie = wpa_supplicant_extra_ies(wpa_s, ¶ms);
#ifdef CONFIG_HS20
if (wpa_s->conf->hs20 && wpabuf_resize(&extra_ie, 6) == 0)
wpas_hs20_add_indication(extra_ie);
#endif /* CONFIG_HS20 */
if (params.freqs == NULL && wpa_s->next_scan_freqs) {
wpa_dbg(wpa_s, MSG_DEBUG, "Optimize scan based on previously "
"generated frequency list");
params.freqs = wpa_s->next_scan_freqs;
} else
os_free(wpa_s->next_scan_freqs);
wpa_s->next_scan_freqs = NULL;
params.filter_ssids = wpa_supplicant_build_filter_ssids(
wpa_s->conf, ¶ms.num_filter_ssids);
if (extra_ie) {
params.extra_ies = wpabuf_head(extra_ie);
params.extra_ies_len = wpabuf_len(extra_ie);
}
#ifdef CONFIG_P2P
if (wpa_s->p2p_in_provisioning) {
/*
* The interface may not yet be in P2P mode, so we have to
* explicitly request P2P probe to disable CCK rates.
*/
params.p2p_probe = 1;
}
#endif /* CONFIG_P2P */
ret = wpa_supplicant_trigger_scan(wpa_s, ¶ms);
wpabuf_free(extra_ie);
os_free(params.freqs);
os_free(params.filter_ssids);
if (ret) {
wpa_msg(wpa_s, MSG_WARNING, "Failed to initiate AP scan");
if (prev_state != wpa_s->wpa_state)
wpa_supplicant_set_state(wpa_s, prev_state);
/* Restore scan_req since we will try to scan again */
wpa_s->scan_req = scan_req;
wpa_supplicant_req_scan(wpa_s, 1, 0);
}
}
static int wpa_supplicant_ctrl_iface_status(struct wpa_supplicant *wpa_s,
const char *params,
char *buf, size_t buflen)
{
char *pos, *end, tmp[30];
int res, verbose, ret;
verbose = os_strcmp(params, "-VERBOSE") == 0;
pos = buf;
end = buf + buflen;
if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
struct wpa_ssid *ssid = wpa_s->current_ssid;
ret = os_snprintf(pos, end - pos, "bssid=" MACSTR "\n",
MAC2STR(wpa_s->bssid));
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
if (ssid) {
u8 *_ssid = ssid->ssid;
size_t ssid_len = ssid->ssid_len;
u8 ssid_buf[MAX_SSID_LEN];
if (ssid_len == 0) {
int _res = wpa_drv_get_ssid(wpa_s, ssid_buf);
if (_res < 0)
ssid_len = 0;
else
ssid_len = _res;
_ssid = ssid_buf;
}
ret = os_snprintf(pos, end - pos, "ssid=%s\nid=%d\n",
wpa_ssid_txt(_ssid, ssid_len),
ssid->id);
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
if (ssid->id_str) {
ret = os_snprintf(pos, end - pos,
"id_str=%s\n",
ssid->id_str);
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
}
}
pos += wpa_sm_get_status(wpa_s->wpa, pos, end - pos, verbose);
}
ret = os_snprintf(pos, end - pos, "wpa_state=%s\n",
wpa_supplicant_state_txt(wpa_s->wpa_state));
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
if (wpa_s->l2 &&
l2_packet_get_ip_addr(wpa_s->l2, tmp, sizeof(tmp)) >= 0) {
ret = os_snprintf(pos, end - pos, "ip_address=%s\n", tmp);
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
}
if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X ||
wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
res = eapol_sm_get_status(wpa_s->eapol, pos, end - pos,
verbose);
if (res >= 0)
pos += res;
}
res = rsn_preauth_get_status(wpa_s->wpa, pos, end - pos, verbose);
if (res >= 0)
pos += res;
return pos - buf;
}
/**
* wpa_supplicant_req_sched_scan - Start a periodic scheduled scan
* @wpa_s: Pointer to wpa_supplicant data
*
* This function is used to schedule periodic scans for neighboring
* access points repeating the scan continuously.
*/
int wpa_supplicant_req_sched_scan(struct wpa_supplicant *wpa_s)
{
struct wpa_driver_scan_params params;
enum wpa_states prev_state;
struct wpa_ssid *ssid;
struct wpabuf *wps_ie = NULL;
int ret;
unsigned int max_sched_scan_ssids;
int wildcard = 0;
int need_ssids;
if (!wpa_s->sched_scan_supported)
return -1;
if (wpa_s->max_sched_scan_ssids > WPAS_MAX_SCAN_SSIDS)
max_sched_scan_ssids = WPAS_MAX_SCAN_SSIDS;
else
max_sched_scan_ssids = wpa_s->max_sched_scan_ssids;
if (max_sched_scan_ssids < 1)
return -1;
if (wpa_s->sched_scanning) {
wpa_dbg(wpa_s, MSG_DEBUG, "Already sched scanning");
return 0;
}
need_ssids = 0;
for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
if (!ssid->disabled && !ssid->scan_ssid) {
/* Use wildcard SSID to find this network */
wildcard = 1;
} else if (!ssid->disabled && ssid->ssid_len)
need_ssids++;
}
if (wildcard)
need_ssids++;
if (wpa_s->normal_scans < 3 &&
(need_ssids <= wpa_s->max_scan_ssids ||
wpa_s->max_scan_ssids >= (int) max_sched_scan_ssids)) {
/*
* When normal scan can speed up operations, use that for the
* first operations before starting the sched_scan to allow
* user space sleep more. We do this only if the normal scan
* has functionality that is suitable for this or if the
* sched_scan does not have better support for multiple SSIDs.
*/
wpa_dbg(wpa_s, MSG_DEBUG, "Use normal scan instead of "
"sched_scan for initial scans (normal_scans=%d)",
wpa_s->normal_scans);
return -1;
}
os_memset(¶ms, 0, sizeof(params));
/* If we can't allocate space for the filters, we just don't filter */
params.filter_ssids = os_zalloc(wpa_s->max_match_sets *
sizeof(struct wpa_driver_scan_filter));
prev_state = wpa_s->wpa_state;
#ifndef ANDROID_P2P
if (wpa_s->wpa_state == WPA_DISCONNECTED ||
wpa_s->wpa_state == WPA_INACTIVE)
wpa_supplicant_set_state(wpa_s, WPA_SCANNING);
#endif
/* Find the starting point from which to continue scanning */
ssid = wpa_s->conf->ssid;
if (wpa_s->prev_sched_ssid) {
while (ssid) {
if (ssid == wpa_s->prev_sched_ssid) {
ssid = ssid->next;
break;
}
ssid = ssid->next;
}
}
if (!ssid || !wpa_s->prev_sched_ssid) {
wpa_dbg(wpa_s, MSG_DEBUG, "Beginning of SSID list");
wpa_s->sched_scan_interval = 10;
wpa_s->sched_scan_timeout = max_sched_scan_ssids * 2;
wpa_s->first_sched_scan = 1;
ssid = wpa_s->conf->ssid;
wpa_s->prev_sched_ssid = ssid;
}
if (wildcard) {
wpa_dbg(wpa_s, MSG_DEBUG, "Add wildcard SSID to sched_scan");
params.num_ssids++;
}
while (ssid) {
if (ssid->disabled)
goto next;
if (params.num_filter_ssids < wpa_s->max_match_sets &&
params.filter_ssids && ssid->ssid && ssid->ssid_len) {
wpa_dbg(wpa_s, MSG_DEBUG, "add to filter ssid: %s",
wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
os_memcpy(params.filter_ssids[params.num_filter_ssids].ssid,
ssid->ssid, ssid->ssid_len);
params.filter_ssids[params.num_filter_ssids].ssid_len =
ssid->ssid_len;
params.num_filter_ssids++;
} else if (params.filter_ssids && ssid->ssid && ssid->ssid_len)
{
wpa_dbg(wpa_s, MSG_DEBUG, "Not enough room for SSID "
"filter for sched_scan - drop filter");
os_free(params.filter_ssids);
params.filter_ssids = NULL;
params.num_filter_ssids = 0;
}
if (ssid->scan_ssid && ssid->ssid && ssid->ssid_len) {
if (params.num_ssids == max_sched_scan_ssids)
break; /* only room for broadcast SSID */
wpa_dbg(wpa_s, MSG_DEBUG,
"add to active scan ssid: %s",
wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
params.ssids[params.num_ssids].ssid =
ssid->ssid;
params.ssids[params.num_ssids].ssid_len =
ssid->ssid_len;
params.num_ssids++;
if (params.num_ssids >= max_sched_scan_ssids) {
wpa_s->prev_sched_ssid = ssid;
break;
}
}
next:
wpa_s->prev_sched_ssid = ssid;
ssid = ssid->next;
}
if (params.num_filter_ssids == 0) {
os_free(params.filter_ssids);
params.filter_ssids = NULL;
}
if (wpa_s->wps)
wps_ie = wpa_supplicant_extra_ies(wpa_s, ¶ms);
if (ssid || !wpa_s->first_sched_scan) {
wpa_dbg(wpa_s, MSG_DEBUG,
"Starting sched scan: interval %d (no timeout)",
wpa_s->sched_scan_interval);
} else {
wpa_dbg(wpa_s, MSG_DEBUG,
"Starting sched scan: interval %d timeout %d",
wpa_s->sched_scan_interval, wpa_s->sched_scan_timeout);
}
ret = wpa_supplicant_start_sched_scan(wpa_s, ¶ms,
wpa_s->sched_scan_interval);
wpabuf_free(wps_ie);
os_free(params.filter_ssids);
if (ret) {
wpa_msg(wpa_s, MSG_WARNING, "Failed to initiate sched scan");
if (prev_state != wpa_s->wpa_state)
wpa_supplicant_set_state(wpa_s, prev_state);
return ret;
}
/* If we have more SSIDs to scan, add a timeout so we scan them too */
if (ssid || !wpa_s->first_sched_scan) {
wpa_s->sched_scan_timed_out = 0;
eloop_register_timeout(wpa_s->sched_scan_timeout, 0,
wpa_supplicant_sched_scan_timeout,
wpa_s, NULL);
wpa_s->first_sched_scan = 0;
wpa_s->sched_scan_timeout /= 2;
wpa_s->sched_scan_interval *= 2;
}
return 0;
}
static int wpa_supplicant_ctrl_iface_scan_results(
struct wpa_supplicant *wpa_s, char *buf, size_t buflen)
{
char *pos, *end, *retpos;
struct wpa_scan_result *res;
int i, ret;
if (wpa_s->scan_results == NULL &&
wpa_supplicant_get_scan_results(wpa_s) < 0)
return 0;
if (wpa_s->scan_results == NULL)
return 0;
pos = buf;
end = buf + buflen;
ret = os_snprintf(pos, end - pos, "bssid / frequency / signal level / "
"flags / ssid\n");
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
for (i = 0; i < wpa_s->num_scan_results; i++) {
retpos = pos;
res = &wpa_s->scan_results[i];
ret = os_snprintf(pos, end - pos, MACSTR "\t%d\t%d\t",
MAC2STR(res->bssid), res->freq, res->level);
if (ret < 0 || ret >= end - pos)
return retpos - buf;
pos += ret;
if (res->wpa_ie_len) {
pos = wpa_supplicant_ie_txt(pos, end, "WPA",
res->wpa_ie,
res->wpa_ie_len);
}
if (res->rsn_ie_len) {
pos = wpa_supplicant_ie_txt(pos, end, "WPA2",
res->rsn_ie,
res->rsn_ie_len);
}
if (!res->wpa_ie_len && !res->rsn_ie_len &&
res->caps & IEEE80211_CAP_PRIVACY) {
ret = os_snprintf(pos, end - pos, "[WEP]");
if (ret < 0 || ret >= end - pos)
return retpos - buf;
pos += ret;
}
if (res->caps & IEEE80211_CAP_IBSS) {
ret = os_snprintf(pos, end - pos, "[IBSS]");
if (ret < 0 || ret >= end - pos)
return retpos - buf;
pos += ret;
}
if (!res->wpa_ie_len && !res->rsn_ie_len) {
ret = os_snprintf(pos, end - pos, "\t");
if (ret < 0 || ret >= end - pos)
return retpos - buf;
pos += ret;
}
ret = os_snprintf(pos, end - pos, "\t%s",
wpa_ssid_txt(res->ssid, res->ssid_len));
if (ret < 0 || ret >= end - pos)
return retpos - buf;
pos += ret;
ret = os_snprintf(pos, end - pos, "\n");
if (ret < 0 || ret >= end - pos)
return retpos - buf;
pos += ret;
}
return pos - buf;
}
static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
int i, struct wpa_scan_res *bss,
struct wpa_ssid *group)
{
const u8 *ssid_;
u8 wpa_ie_len, rsn_ie_len, ssid_len;
int wpa;
struct wpa_blacklist *e;
const u8 *ie;
struct wpa_ssid *ssid;
ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
ssid_ = ie ? ie + 2 : (u8 *) "";
ssid_len = ie ? ie[1] : 0;
ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
wpa_ie_len = ie ? ie[1] : 0;
ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
rsn_ie_len = ie ? ie[1] : 0;
wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
"wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s",
i, MAC2STR(bss->bssid), wpa_ssid_txt(ssid_, ssid_len),
wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
wpa_scan_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ?
" wps" : "");
e = wpa_blacklist_get(wpa_s, bss->bssid);
if (e && e->count > 1) {
wpa_printf(MSG_DEBUG, " skip - blacklisted");
return 0;
}
if (ssid_len == 0) {
wpa_printf(MSG_DEBUG, " skip - SSID not known");
return 0;
}
wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
for (ssid = group; ssid; ssid = ssid->pnext) {
int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
if (ssid->disabled) {
wpa_printf(MSG_DEBUG, " skip - disabled");
continue;
}
#ifdef CONFIG_WPS
if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
wpa_printf(MSG_DEBUG, " skip - blacklisted (WPS)");
continue;
}
if (wpa && ssid->ssid_len == 0 &&
wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
check_ssid = 0;
if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
/* Only allow wildcard SSID match if an AP
* advertises active WPS operation that matches
* with our mode. */
check_ssid = 1;
if (ssid->ssid_len == 0 &&
wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
check_ssid = 0;
}
#endif /* CONFIG_WPS */
if (check_ssid &&
(ssid_len != ssid->ssid_len ||
os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
wpa_printf(MSG_DEBUG, " skip - SSID mismatch");
continue;
}
if (ssid->bssid_set &&
os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
wpa_printf(MSG_DEBUG, " skip - BSSID mismatch");
continue;
}
if (wpa && !wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
continue;
if (!wpa &&
!(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
!(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
!(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
wpa_printf(MSG_DEBUG, " skip - non-WPA network not "
"allowed");
continue;
}
if (!wpa && !wpa_supplicant_match_privacy(bss, ssid)) {
wpa_printf(MSG_DEBUG, " skip - privacy mismatch");
continue;
}
if (!wpa && (bss->caps & IEEE80211_CAP_IBSS)) {
wpa_printf(MSG_DEBUG, " skip - IBSS (adhoc) "
"network");
continue;
}
if (!freq_allowed(ssid->freq_list, bss->freq)) {
wpa_printf(MSG_DEBUG, " skip - frequency not "
"allowed");
continue;
}
#ifdef CONFIG_P2P
/*
* TODO: skip the AP if its P2P IE has Group Formation
* bit set in the P2P Group Capability Bitmap and we
* are not in Group Formation with that device.
*/
#endif /* CONFIG_P2P */
/* Matching configuration found */
return ssid;
}
/* No matching configuration found */
return 0;
}