static u8 * hostapd_gen_probe_resp(struct hostapd_data *hapd,
struct sta_info *sta,
const struct ieee80211_mgmt *req,
int is_p2p, size_t *resp_len)
{
struct ieee80211_mgmt *resp;
u8 *pos, *epos;
size_t buflen;
#define MAX_PROBERESP_LEN 768
buflen = MAX_PROBERESP_LEN;
#ifdef CONFIG_WPS
if (hapd->wps_probe_resp_ie)
buflen += wpabuf_len(hapd->wps_probe_resp_ie);
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
if (hapd->p2p_probe_resp_ie)
buflen += wpabuf_len(hapd->p2p_probe_resp_ie);
#endif /* CONFIG_P2P */
resp = os_zalloc(buflen);
if (resp == NULL)
return NULL;
epos = ((u8 *) resp) + MAX_PROBERESP_LEN;
resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
WLAN_FC_STYPE_PROBE_RESP);
if (req)
os_memcpy(resp->da, req->sa, ETH_ALEN);
os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
resp->u.probe_resp.beacon_int =
host_to_le16(hapd->iconf->beacon_int);
/* hardware or low-level driver will setup seq_ctrl and timestamp */
resp->u.probe_resp.capab_info =
host_to_le16(hostapd_own_capab_info(hapd, sta, 1));
pos = resp->u.probe_resp.variable;
*pos++ = WLAN_EID_SSID;
*pos++ = hapd->conf->ssid.ssid_len;
os_memcpy(pos, hapd->conf->ssid.ssid, hapd->conf->ssid.ssid_len);
pos += hapd->conf->ssid.ssid_len;
/* Supported rates */
pos = hostapd_eid_supp_rates(hapd, pos);
/* DS Params */
pos = hostapd_eid_ds_params(hapd, pos);
pos = hostapd_eid_country(hapd, pos, epos - pos);
/* ERP Information element */
pos = hostapd_eid_erp_info(hapd, pos);
/* Extended supported rates */
pos = hostapd_eid_ext_supp_rates(hapd, pos);
/* RSN, MDIE, WPA */
pos = hostapd_eid_wpa(hapd, pos, epos - pos);
#ifdef CONFIG_IEEE80211N
pos = hostapd_eid_ht_capabilities(hapd, pos);
pos = hostapd_eid_ht_operation(hapd, pos);
#endif /* CONFIG_IEEE80211N */
pos = hostapd_eid_ext_capab(hapd, pos);
pos = hostapd_eid_time_adv(hapd, pos);
pos = hostapd_eid_time_zone(hapd, pos);
pos = hostapd_eid_interworking(hapd, pos);
pos = hostapd_eid_adv_proto(hapd, pos);
pos = hostapd_eid_roaming_consortium(hapd, pos);
/* Wi-Fi Alliance WMM */
pos = hostapd_eid_wmm(hapd, pos);
#ifdef CONFIG_WPS
if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) {
os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie),
wpabuf_len(hapd->wps_probe_resp_ie));
pos += wpabuf_len(hapd->wps_probe_resp_ie);
}
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
if ((hapd->conf->p2p & P2P_ENABLED) && is_p2p &&
hapd->p2p_probe_resp_ie) {
os_memcpy(pos, wpabuf_head(hapd->p2p_probe_resp_ie),
wpabuf_len(hapd->p2p_probe_resp_ie));
pos += wpabuf_len(hapd->p2p_probe_resp_ie);
}
#endif /* CONFIG_P2P */
#ifdef CONFIG_P2P_MANAGER
if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
P2P_MANAGE)
pos = hostapd_eid_p2p_manage(hapd, pos);
#endif /* CONFIG_P2P_MANAGER */
#ifdef CONFIG_HS20
pos = hostapd_eid_hs20_indication(hapd, pos);
#endif /* CONFIG_HS20 */
*resp_len = pos - (u8 *) resp;
return (u8 *) resp;
}
void ieee802_11_set_beacon(struct hostapd_data *hapd)
{
struct ieee80211_mgmt *head = NULL;
u8 *tail = NULL;
size_t head_len = 0, tail_len = 0;
struct wpa_driver_ap_params params;
struct wpabuf *beacon, *proberesp, *assocresp;
#ifdef NEED_AP_MLME
u16 capab_info;
u8 *pos, *tailpos;
#endif /* NEED_AP_MLME */
hapd->beacon_set_done = 1;
#ifdef NEED_AP_MLME
#define BEACON_HEAD_BUF_SIZE 256
#define BEACON_TAIL_BUF_SIZE 512
head = os_zalloc(BEACON_HEAD_BUF_SIZE);
tail_len = BEACON_TAIL_BUF_SIZE;
#ifdef CONFIG_WPS
if (hapd->conf->wps_state && hapd->wps_beacon_ie)
tail_len += wpabuf_len(hapd->wps_beacon_ie);
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
if (hapd->p2p_beacon_ie)
tail_len += wpabuf_len(hapd->p2p_beacon_ie);
#endif /* CONFIG_P2P */
tailpos = tail = os_malloc(tail_len);
if (head == NULL || tail == NULL) {
wpa_printf(MSG_ERROR, "Failed to set beacon data");
os_free(head);
os_free(tail);
return;
}
head->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
WLAN_FC_STYPE_BEACON);
head->duration = host_to_le16(0);
os_memset(head->da, 0xff, ETH_ALEN);
os_memcpy(head->sa, hapd->own_addr, ETH_ALEN);
os_memcpy(head->bssid, hapd->own_addr, ETH_ALEN);
head->u.beacon.beacon_int =
host_to_le16(hapd->iconf->beacon_int);
/* hardware or low-level driver will setup seq_ctrl and timestamp */
capab_info = hostapd_own_capab_info(hapd, NULL, 0);
head->u.beacon.capab_info = host_to_le16(capab_info);
pos = &head->u.beacon.variable[0];
/* SSID */
*pos++ = WLAN_EID_SSID;
if (hapd->conf->ignore_broadcast_ssid == 2) {
/* clear the data, but keep the correct length of the SSID */
*pos++ = hapd->conf->ssid.ssid_len;
os_memset(pos, 0, hapd->conf->ssid.ssid_len);
pos += hapd->conf->ssid.ssid_len;
} else if (hapd->conf->ignore_broadcast_ssid) {
*pos++ = 0; /* empty SSID */
} else {
*pos++ = hapd->conf->ssid.ssid_len;
os_memcpy(pos, hapd->conf->ssid.ssid,
hapd->conf->ssid.ssid_len);
pos += hapd->conf->ssid.ssid_len;
}
/* Supported rates */
pos = hostapd_eid_supp_rates(hapd, pos);
/* DS Params */
pos = hostapd_eid_ds_params(hapd, pos);
head_len = pos - (u8 *) head;
tailpos = hostapd_eid_country(hapd, tailpos,
tail + BEACON_TAIL_BUF_SIZE - tailpos);
/* ERP Information element */
tailpos = hostapd_eid_erp_info(hapd, tailpos);
/* Extended supported rates */
tailpos = hostapd_eid_ext_supp_rates(hapd, tailpos);
/* RSN, MDIE, WPA */
tailpos = hostapd_eid_wpa(hapd, tailpos, tail + BEACON_TAIL_BUF_SIZE -
tailpos);
#ifdef CONFIG_IEEE80211N
tailpos = hostapd_eid_ht_capabilities(hapd, tailpos);
tailpos = hostapd_eid_ht_operation(hapd, tailpos);
#endif /* CONFIG_IEEE80211N */
tailpos = hostapd_eid_ext_capab(hapd, tailpos);
/*
* TODO: Time Advertisement element should only be included in some
* DTIM Beacon frames.
*/
tailpos = hostapd_eid_time_adv(hapd, tailpos);
tailpos = hostapd_eid_interworking(hapd, tailpos);
tailpos = hostapd_eid_adv_proto(hapd, tailpos);
tailpos = hostapd_eid_roaming_consortium(hapd, tailpos);
/* Wi-Fi Alliance WMM */
tailpos = hostapd_eid_wmm(hapd, tailpos);
#ifdef CONFIG_WPS
if (hapd->conf->wps_state && hapd->wps_beacon_ie) {
os_memcpy(tailpos, wpabuf_head(hapd->wps_beacon_ie),
wpabuf_len(hapd->wps_beacon_ie));
tailpos += wpabuf_len(hapd->wps_beacon_ie);
}
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_beacon_ie) {
os_memcpy(tailpos, wpabuf_head(hapd->p2p_beacon_ie),
wpabuf_len(hapd->p2p_beacon_ie));
tailpos += wpabuf_len(hapd->p2p_beacon_ie);
}
#endif /* CONFIG_P2P */
#ifdef CONFIG_P2P_MANAGER
if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
P2P_MANAGE)
tailpos = hostapd_eid_p2p_manage(hapd, tailpos);
#endif /* CONFIG_P2P_MANAGER */
#ifdef CONFIG_HS20
tailpos = hostapd_eid_hs20_indication(hapd, tailpos);
#endif /* CONFIG_HS20 */
tail_len = tailpos > tail ? tailpos - tail : 0;
#endif /* NEED_AP_MLME */
os_memset(¶ms, 0, sizeof(params));
params.head = (u8 *) head;
params.head_len = head_len;
params.tail = tail;
params.tail_len = tail_len;
params.dtim_period = hapd->conf->dtim_period;
params.beacon_int = hapd->iconf->beacon_int;
params.ssid = (u8 *) hapd->conf->ssid.ssid;
params.ssid_len = hapd->conf->ssid.ssid_len;
params.pairwise_ciphers = hapd->conf->rsn_pairwise ?
hapd->conf->rsn_pairwise : hapd->conf->wpa_pairwise;
params.group_cipher = hapd->conf->wpa_group;
params.key_mgmt_suites = hapd->conf->wpa_key_mgmt;
params.auth_algs = hapd->conf->auth_algs;
params.wpa_version = hapd->conf->wpa;
params.privacy = hapd->conf->ssid.wep.keys_set || hapd->conf->wpa ||
(hapd->conf->ieee802_1x &&
(hapd->conf->default_wep_key_len ||
hapd->conf->individual_wep_key_len));
switch (hapd->conf->ignore_broadcast_ssid) {
case 0:
params.hide_ssid = NO_SSID_HIDING;
break;
case 1:
params.hide_ssid = HIDDEN_SSID_ZERO_LEN;
break;
case 2:
params.hide_ssid = HIDDEN_SSID_ZERO_CONTENTS;
break;
}
hostapd_build_ap_extra_ies(hapd, &beacon, &proberesp, &assocresp);
params.beacon_ies = beacon;
params.proberesp_ies = proberesp;
params.assocresp_ies = assocresp;
params.isolate = hapd->conf->isolate;
#ifdef NEED_AP_MLME
params.cts_protect = !!(ieee802_11_erp_info(hapd) &
ERP_INFO_USE_PROTECTION);
params.preamble = hapd->iface->num_sta_no_short_preamble == 0 &&
hapd->iconf->preamble == SHORT_PREAMBLE;
if (hapd->iface->current_mode &&
hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
params.short_slot_time =
hapd->iface->num_sta_no_short_slot_time > 0 ? 0 : 1;
else
params.short_slot_time = -1;
if (!hapd->iconf->ieee80211n || hapd->conf->disable_11n)
params.ht_opmode = -1;
else
params.ht_opmode = hapd->iface->ht_op_mode;
#endif /* NEED_AP_MLME */
params.interworking = hapd->conf->interworking;
if (hapd->conf->interworking &&
!is_zero_ether_addr(hapd->conf->hessid))
params.hessid = hapd->conf->hessid;
params.access_network_type = hapd->conf->access_network_type;
#ifdef CONFIG_HS20
params.disable_dgaf = hapd->conf->disable_dgaf;
#endif /* CONFIG_HS20 */
if (hostapd_drv_set_ap(hapd, ¶ms))
wpa_printf(MSG_ERROR, "Failed to set beacon parameters");
hostapd_free_ap_extra_ies(hapd, beacon, proberesp, assocresp);
os_free(tail);
os_free(head);
}
int hostapd_build_ap_extra_ies(struct hostapd_data *hapd,
struct wpabuf **beacon_ret,
struct wpabuf **proberesp_ret,
struct wpabuf **assocresp_ret)
{
struct wpabuf *beacon = NULL, *proberesp = NULL, *assocresp = NULL;
u8 buf[200], *pos;
*beacon_ret = *proberesp_ret = *assocresp_ret = NULL;
pos = buf;
pos = hostapd_eid_time_adv(hapd, pos);
if (pos != buf) {
if (wpabuf_resize(&beacon, pos - buf) != 0)
goto fail;
wpabuf_put_data(beacon, buf, pos - buf);
}
pos = hostapd_eid_time_zone(hapd, pos);
if (pos != buf) {
if (wpabuf_resize(&proberesp, pos - buf) != 0)
goto fail;
wpabuf_put_data(proberesp, buf, pos - buf);
}
pos = buf;
pos = hostapd_eid_ext_capab(hapd, pos);
if (pos != buf) {
if (wpabuf_resize(&assocresp, pos - buf) != 0)
goto fail;
wpabuf_put_data(assocresp, buf, pos - buf);
}
pos = hostapd_eid_interworking(hapd, pos);
pos = hostapd_eid_adv_proto(hapd, pos);
pos = hostapd_eid_roaming_consortium(hapd, pos);
if (pos != buf) {
if (wpabuf_resize(&beacon, pos - buf) != 0)
goto fail;
wpabuf_put_data(beacon, buf, pos - buf);
if (wpabuf_resize(&proberesp, pos - buf) != 0)
goto fail;
wpabuf_put_data(proberesp, buf, pos - buf);
}
if (hapd->wps_beacon_ie) {
if (wpabuf_resize(&beacon, wpabuf_len(hapd->wps_beacon_ie)) <
0)
goto fail;
wpabuf_put_buf(beacon, hapd->wps_beacon_ie);
}
if (hapd->wps_probe_resp_ie) {
if (wpabuf_resize(&proberesp,
wpabuf_len(hapd->wps_probe_resp_ie)) < 0)
goto fail;
wpabuf_put_buf(proberesp, hapd->wps_probe_resp_ie);
}
#ifdef CONFIG_P2P
if (hapd->p2p_beacon_ie) {
if (wpabuf_resize(&beacon, wpabuf_len(hapd->p2p_beacon_ie)) <
0)
goto fail;
wpabuf_put_buf(beacon, hapd->p2p_beacon_ie);
}
if (hapd->p2p_probe_resp_ie) {
if (wpabuf_resize(&proberesp,
wpabuf_len(hapd->p2p_probe_resp_ie)) < 0)
goto fail;
wpabuf_put_buf(proberesp, hapd->p2p_probe_resp_ie);
}
#endif /* CONFIG_P2P */
#ifdef CONFIG_P2P_MANAGER
if (hapd->conf->p2p & P2P_MANAGE) {
if (wpabuf_resize(&beacon, 100) == 0) {
u8 *start, *p;
start = wpabuf_put(beacon, 0);
p = hostapd_eid_p2p_manage(hapd, start);
wpabuf_put(beacon, p - start);
}
if (wpabuf_resize(&proberesp, 100) == 0) {
u8 *start, *p;
start = wpabuf_put(proberesp, 0);
p = hostapd_eid_p2p_manage(hapd, start);
wpabuf_put(proberesp, p - start);
}
}
#endif /* CONFIG_P2P_MANAGER */
#ifdef CONFIG_WPS2
if (hapd->conf->wps_state) {
struct wpabuf *a = wps_build_assoc_resp_ie();
if (a && wpabuf_resize(&assocresp, wpabuf_len(a)) == 0)
wpabuf_put_buf(assocresp, a);
wpabuf_free(a);
}
#endif /* CONFIG_WPS2 */
#ifdef CONFIG_P2P_MANAGER
if (hapd->conf->p2p & P2P_MANAGE) {
if (wpabuf_resize(&assocresp, 100) == 0) {
u8 *start, *p;
start = wpabuf_put(assocresp, 0);
p = hostapd_eid_p2p_manage(hapd, start);
wpabuf_put(assocresp, p - start);
}
}
#endif /* CONFIG_P2P_MANAGER */
#ifdef CONFIG_WIFI_DISPLAY
if (hapd->p2p_group) {
struct wpabuf *a;
a = p2p_group_assoc_resp_ie(hapd->p2p_group, P2P_SC_SUCCESS);
if (a && wpabuf_resize(&assocresp, wpabuf_len(a)) == 0)
wpabuf_put_buf(assocresp, a);
wpabuf_free(a);
}
#endif /* CONFIG_WIFI_DISPLAY */
#ifdef CONFIG_HS20
pos = buf;
pos = hostapd_eid_hs20_indication(hapd, pos);
if (pos != buf) {
if (wpabuf_resize(&beacon, pos - buf) != 0)
goto fail;
wpabuf_put_data(beacon, buf, pos - buf);
if (wpabuf_resize(&proberesp, pos - buf) != 0)
goto fail;
wpabuf_put_data(proberesp, buf, pos - buf);
}
#endif /* CONFIG_HS20 */
*beacon_ret = beacon;
*proberesp_ret = proberesp;
*assocresp_ret = assocresp;
return 0;
fail:
wpabuf_free(beacon);
wpabuf_free(proberesp);
wpabuf_free(assocresp);
return -1;
}
void handle_probe_req(struct hostapd_data *hapd,
const struct ieee80211_mgmt *mgmt, size_t len)
{
struct ieee80211_mgmt *resp;
struct ieee802_11_elems elems;
char *ssid;
u8 *pos, *epos;
const u8 *ie;
size_t ssid_len, ie_len;
struct sta_info *sta = NULL;
size_t buflen;
size_t i;
int noack;
ie = mgmt->u.probe_req.variable;
if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req))
return;
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) > 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;
}
ssid = NULL;
ssid_len = 0;
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;
}
#ifdef CONFIG_P2P
if (hapd->p2p && 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);
}
#endif /* CONFIG_P2P */
if (hapd->conf->ignore_broadcast_ssid && elems.ssid_len == 0) {
wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR " for "
"broadcast SSID ignored", MAC2STR(mgmt->sa));
return;
}
sta = ap_get_sta(hapd, mgmt->sa);
#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 */
if (elems.ssid_len == 0 ||
(elems.ssid_len == hapd->conf->ssid.ssid_len &&
os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) ==
0)) {
ssid = hapd->conf->ssid.ssid;
ssid_len = hapd->conf->ssid.ssid_len;
if (sta)
sta->ssid_probe = &hapd->conf->ssid;
}
if (!ssid) {
if (!(mgmt->da[0] & 0x01)) {
char ssid_txt[33];
ieee802_11_print_ssid(ssid_txt, elems.ssid,
elems.ssid_len);
wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
" for foreign SSID '%s' (DA " MACSTR ")",
MAC2STR(mgmt->sa), ssid_txt,
MAC2STR(mgmt->da));
}
return;
}
#ifdef CONFIG_INTERWORKING
if (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 (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 */
/* TODO: verify that supp_rates contains at least one matching rate
* with AP configuration */
#define MAX_PROBERESP_LEN 768
buflen = MAX_PROBERESP_LEN;
#ifdef CONFIG_WPS
if (hapd->wps_probe_resp_ie)
buflen += wpabuf_len(hapd->wps_probe_resp_ie);
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
if (hapd->p2p_probe_resp_ie)
buflen += wpabuf_len(hapd->p2p_probe_resp_ie);
#endif /* CONFIG_P2P */
resp = os_zalloc(buflen);
if (resp == NULL)
return;
epos = ((u8 *) resp) + MAX_PROBERESP_LEN;
resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
WLAN_FC_STYPE_PROBE_RESP);
os_memcpy(resp->da, mgmt->sa, ETH_ALEN);
os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
resp->u.probe_resp.beacon_int =
host_to_le16(hapd->iconf->beacon_int);
/* hardware or low-level driver will setup seq_ctrl and timestamp */
resp->u.probe_resp.capab_info =
host_to_le16(hostapd_own_capab_info(hapd, sta, 1));
pos = resp->u.probe_resp.variable;
*pos++ = WLAN_EID_SSID;
*pos++ = ssid_len;
os_memcpy(pos, ssid, ssid_len);
pos += ssid_len;
/* Supported rates */
pos = hostapd_eid_supp_rates(hapd, pos);
/* DS Params */
pos = hostapd_eid_ds_params(hapd, pos);
pos = hostapd_eid_country(hapd, pos, epos - pos);
/* ERP Information element */
pos = hostapd_eid_erp_info(hapd, pos);
/* Extended supported rates */
pos = hostapd_eid_ext_supp_rates(hapd, pos);
/* RSN, MDIE, WPA */
pos = hostapd_eid_wpa(hapd, pos, epos - pos);
#ifdef CONFIG_IEEE80211N
pos = hostapd_eid_ht_capabilities(hapd, pos);
pos = hostapd_eid_ht_operation(hapd, pos);
#endif /* CONFIG_IEEE80211N */
pos = hostapd_eid_ext_capab(hapd, pos);
pos = hostapd_eid_time_adv(hapd, pos);
pos = hostapd_eid_time_zone(hapd, pos);
pos = hostapd_eid_interworking(hapd, pos);
pos = hostapd_eid_adv_proto(hapd, pos);
pos = hostapd_eid_roaming_consortium(hapd, pos);
/* Wi-Fi Alliance WMM */
pos = hostapd_eid_wmm(hapd, pos);
#ifdef CONFIG_WPS
if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) {
os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie),
wpabuf_len(hapd->wps_probe_resp_ie));
pos += wpabuf_len(hapd->wps_probe_resp_ie);
}
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
if ((hapd->conf->p2p & P2P_ENABLED) && elems.p2p &&
hapd->p2p_probe_resp_ie) {
os_memcpy(pos, wpabuf_head(hapd->p2p_probe_resp_ie),
wpabuf_len(hapd->p2p_probe_resp_ie));
pos += wpabuf_len(hapd->p2p_probe_resp_ie);
}
#endif /* CONFIG_P2P */
#ifdef CONFIG_P2P_MANAGER
if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
P2P_MANAGE)
pos = hostapd_eid_p2p_manage(hapd, pos);
#endif /* CONFIG_P2P_MANAGER */
#ifdef CONFIG_HS20
pos = hostapd_eid_hs20_indication(hapd, pos);
#endif /* CONFIG_HS20 */
/*
* If this is a broadcast probe request, apply no ack policy to avoid
* excessive retries.
*/
noack = !!(elems.ssid_len == 0 && is_broadcast_ether_addr(mgmt->da));
if (hostapd_drv_send_mlme(hapd, resp, pos - (u8 *) resp, noack) < 0)
perror("handle_probe_req: send");
os_free(resp);
wpa_printf(MSG_EXCESSIVE, "STA " MACSTR " sent probe request for %s "
"SSID", MAC2STR(mgmt->sa),
elems.ssid_len == 0 ? "broadcast" : "our");
}
void ieee802_11_set_beacon(struct hostapd_data *hapd)
{
struct ieee80211_mgmt *head;
u8 *pos, *tail, *tailpos;
u16 capab_info;
size_t head_len, tail_len;
#ifdef CONFIG_P2P
if ((hapd->conf->p2p & (P2P_ENABLED | P2P_GROUP_OWNER)) == P2P_ENABLED)
goto no_beacon;
#endif /* CONFIG_P2P */
#define BEACON_HEAD_BUF_SIZE 256
#define BEACON_TAIL_BUF_SIZE 512
head = os_zalloc(BEACON_HEAD_BUF_SIZE);
tail_len = BEACON_TAIL_BUF_SIZE;
#ifdef CONFIG_WPS
if (hapd->conf->wps_state && hapd->wps_beacon_ie)
tail_len += wpabuf_len(hapd->wps_beacon_ie);
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
if (hapd->p2p_beacon_ie)
tail_len += wpabuf_len(hapd->p2p_beacon_ie);
#endif /* CONFIG_P2P */
tailpos = tail = os_malloc(tail_len);
if (head == NULL || tail == NULL) {
wpa_printf(MSG_ERROR, "Failed to set beacon data");
os_free(head);
os_free(tail);
return;
}
head->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
WLAN_FC_STYPE_BEACON);
head->duration = host_to_le16(0);
os_memset(head->da, 0xff, ETH_ALEN);
os_memcpy(head->sa, hapd->own_addr, ETH_ALEN);
os_memcpy(head->bssid, hapd->own_addr, ETH_ALEN);
head->u.beacon.beacon_int =
host_to_le16(hapd->iconf->beacon_int);
/* hardware or low-level driver will setup seq_ctrl and timestamp */
capab_info = hostapd_own_capab_info(hapd, NULL, 0);
head->u.beacon.capab_info = host_to_le16(capab_info);
pos = &head->u.beacon.variable[0];
/* SSID */
*pos++ = WLAN_EID_SSID;
if (hapd->conf->ignore_broadcast_ssid == 2) {
/* clear the data, but keep the correct length of the SSID */
*pos++ = hapd->conf->ssid.ssid_len;
os_memset(pos, 0, hapd->conf->ssid.ssid_len);
pos += hapd->conf->ssid.ssid_len;
} else if (hapd->conf->ignore_broadcast_ssid) {
*pos++ = 0; /* empty SSID */
} else {
*pos++ = hapd->conf->ssid.ssid_len;
os_memcpy(pos, hapd->conf->ssid.ssid,
hapd->conf->ssid.ssid_len);
pos += hapd->conf->ssid.ssid_len;
}
/* Supported rates */
pos = hostapd_eid_supp_rates(hapd, pos);
/* DS Params */
pos = hostapd_eid_ds_params(hapd, pos);
head_len = pos - (u8 *) head;
tailpos = hostapd_eid_country(hapd, tailpos,
tail + BEACON_TAIL_BUF_SIZE - tailpos);
/* ERP Information element */
tailpos = hostapd_eid_erp_info(hapd, tailpos);
/* Extended supported rates */
tailpos = hostapd_eid_ext_supp_rates(hapd, tailpos);
/* RSN, MDIE, WPA */
tailpos = hostapd_eid_wpa(hapd, tailpos, tail + BEACON_TAIL_BUF_SIZE -
tailpos, NULL);
#ifdef CONFIG_IEEE80211N
tailpos = hostapd_eid_ht_capabilities(hapd, tailpos);
tailpos = hostapd_eid_ht_operation(hapd, tailpos);
#endif /* CONFIG_IEEE80211N */
tailpos = hostapd_eid_ext_capab(hapd, tailpos);
/* Wi-Fi Alliance WMM */
tailpos = hostapd_eid_wmm(hapd, tailpos);
#ifdef CONFIG_WPS
if (hapd->conf->wps_state && hapd->wps_beacon_ie) {
os_memcpy(tailpos, wpabuf_head(hapd->wps_beacon_ie),
wpabuf_len(hapd->wps_beacon_ie));
tailpos += wpabuf_len(hapd->wps_beacon_ie);
}
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_beacon_ie) {
os_memcpy(tailpos, wpabuf_head(hapd->p2p_beacon_ie),
wpabuf_len(hapd->p2p_beacon_ie));
tailpos += wpabuf_len(hapd->p2p_beacon_ie);
}
#endif /* CONFIG_P2P */
#ifdef CONFIG_P2P_MANAGER
if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
P2P_MANAGE)
tailpos = hostapd_eid_p2p_manage(hapd, tailpos);
#endif /* CONFIG_P2P_MANAGER */
tail_len = tailpos > tail ? tailpos - tail : 0;
if (hostapd_drv_set_beacon(hapd, (u8 *) head, head_len,
tail, tail_len, hapd->conf->dtim_period,
hapd->iconf->beacon_int))
wpa_printf(MSG_ERROR, "Failed to set beacon head/tail or DTIM "
"period");
os_free(tail);
os_free(head);
#ifdef CONFIG_P2P
no_beacon:
#endif /* CONFIG_P2P */
hostapd_set_bss_params(hapd, !!(ieee802_11_erp_info(hapd) &
ERP_INFO_USE_PROTECTION));
}
int hostapd_build_ap_extra_ies(struct hostapd_data *hapd,
struct wpabuf **beacon_ret,
struct wpabuf **proberesp_ret,
struct wpabuf **assocresp_ret)
{
struct wpabuf *beacon = NULL, *proberesp = NULL, *assocresp = NULL;
u8 buf[200], *pos;
*beacon_ret = *proberesp_ret = *assocresp_ret = NULL;
pos = buf;
pos = hostapd_eid_time_adv(hapd, pos);
if (add_buf_data(&beacon, buf, pos - buf) < 0)
goto fail;
pos = hostapd_eid_time_zone(hapd, pos);
if (add_buf_data(&proberesp, buf, pos - buf) < 0)
goto fail;
pos = buf;
pos = hostapd_eid_ext_capab(hapd, pos);
if (add_buf_data(&assocresp, buf, pos - buf) < 0)
goto fail;
pos = hostapd_eid_interworking(hapd, pos);
pos = hostapd_eid_adv_proto(hapd, pos);
pos = hostapd_eid_roaming_consortium(hapd, pos);
if (add_buf_data(&beacon, buf, pos - buf) < 0 ||
add_buf_data(&proberesp, buf, pos - buf) < 0)
goto fail;
#ifdef CONFIG_FST
if (add_buf(&beacon, hapd->iface->fst_ies) < 0 ||
add_buf(&proberesp, hapd->iface->fst_ies) < 0 ||
add_buf(&assocresp, hapd->iface->fst_ies) < 0)
goto fail;
#endif /* CONFIG_FST */
#ifdef CONFIG_FILS
pos = hostapd_eid_fils_indic(hapd, buf, 0);
if (add_buf_data(&beacon, buf, pos - buf) < 0 ||
add_buf_data(&proberesp, buf, pos - buf) < 0)
goto fail;
#endif /* CONFIG_FILS */
if (add_buf(&beacon, hapd->wps_beacon_ie) < 0 ||
add_buf(&proberesp, hapd->wps_probe_resp_ie) < 0)
goto fail;
#ifdef CONFIG_P2P
if (add_buf(&beacon, hapd->p2p_beacon_ie) < 0 ||
add_buf(&proberesp, hapd->p2p_probe_resp_ie) < 0)
goto fail;
#endif /* CONFIG_P2P */
#ifdef CONFIG_P2P_MANAGER
if (hapd->conf->p2p & P2P_MANAGE) {
if (wpabuf_resize(&beacon, 100) == 0) {
u8 *start, *p;
start = wpabuf_put(beacon, 0);
p = hostapd_eid_p2p_manage(hapd, start);
wpabuf_put(beacon, p - start);
}
if (wpabuf_resize(&proberesp, 100) == 0) {
u8 *start, *p;
start = wpabuf_put(proberesp, 0);
p = hostapd_eid_p2p_manage(hapd, start);
wpabuf_put(proberesp, p - start);
}
}
#endif /* CONFIG_P2P_MANAGER */
#ifdef CONFIG_WPS
if (hapd->conf->wps_state) {
struct wpabuf *a = wps_build_assoc_resp_ie();
add_buf(&assocresp, a);
wpabuf_free(a);
}
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P_MANAGER
if (hapd->conf->p2p & P2P_MANAGE) {
if (wpabuf_resize(&assocresp, 100) == 0) {
u8 *start, *p;
start = wpabuf_put(assocresp, 0);
p = hostapd_eid_p2p_manage(hapd, start);
wpabuf_put(assocresp, p - start);
}
}
#endif /* CONFIG_P2P_MANAGER */
#ifdef CONFIG_WIFI_DISPLAY
if (hapd->p2p_group) {
struct wpabuf *a;
a = p2p_group_assoc_resp_ie(hapd->p2p_group, P2P_SC_SUCCESS);
add_buf(&assocresp, a);
wpabuf_free(a);
}
#endif /* CONFIG_WIFI_DISPLAY */
#ifdef CONFIG_HS20
pos = hostapd_eid_hs20_indication(hapd, buf);
if (add_buf_data(&beacon, buf, pos - buf) < 0 ||
add_buf_data(&proberesp, buf, pos - buf) < 0)
goto fail;
pos = hostapd_eid_osen(hapd, buf);
if (add_buf_data(&beacon, buf, pos - buf) < 0 ||
add_buf_data(&proberesp, buf, pos - buf) < 0)
goto fail;
#endif /* CONFIG_HS20 */
#ifdef CONFIG_MBO
if (hapd->conf->mbo_enabled || hapd->enable_oce) {
pos = hostapd_eid_mbo(hapd, buf, sizeof(buf));
if (add_buf_data(&beacon, buf, pos - buf) < 0 ||
add_buf_data(&proberesp, buf, pos - buf) < 0 ||
add_buf_data(&assocresp, buf, pos - buf) < 0)
goto fail;
}
#endif /* CONFIG_MBO */
add_buf(&beacon, hapd->conf->vendor_elements);
add_buf(&proberesp, hapd->conf->vendor_elements);
add_buf(&assocresp, hapd->conf->assocresp_elements);
*beacon_ret = beacon;
*proberesp_ret = proberesp;
*assocresp_ret = assocresp;
return 0;
fail:
wpabuf_free(beacon);
wpabuf_free(proberesp);
wpabuf_free(assocresp);
return -1;
}
static u8 * hostapd_gen_probe_resp(struct hostapd_data *hapd,
struct sta_info *sta, const u8 *ssid, size_t ssid_len,
const struct ieee80211_mgmt *req,
int is_p2p, size_t *resp_len)
{
struct ieee80211_mgmt *resp;
u8 *pos, *epos;
size_t buflen;
#define MAX_PROBERESP_LEN 768
buflen = MAX_PROBERESP_LEN;
#ifdef CONFIG_WPS
if (hapd->wps_probe_resp_ie)
buflen += wpabuf_len(hapd->wps_probe_resp_ie);
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
if (hapd->p2p_probe_resp_ie)
buflen += wpabuf_len(hapd->p2p_probe_resp_ie);
#endif /* CONFIG_P2P */
if (hapd->conf->vendor_elements)
buflen += wpabuf_len(hapd->conf->vendor_elements);
resp = os_zalloc(buflen);
if (resp == NULL)
return NULL;
epos = ((u8 *) resp) + MAX_PROBERESP_LEN;
resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
WLAN_FC_STYPE_PROBE_RESP);
//MANA - check against macacl
if (req && hapd->iconf->mana_macacl) {
int match;
if (hapd->iconf->bss[0]->macaddr_acl == DENY_UNLESS_ACCEPTED) {
match = hostapd_maclist_found(hapd->conf->accept_mac, hapd->conf->num_accept_mac, req->sa, NULL);
if (!match) {
wpa_printf(MSG_DEBUG, "MANA: Station MAC is not authorised by accept ACL: " MACSTR, MAC2STR(req->sa));
return NULL; //MAC is not in accept list, back out and don't send
}
} else if (hapd->iconf->bss[0]->macaddr_acl == ACCEPT_UNLESS_DENIED) {
if (hostapd_maclist_found(hapd->conf->deny_mac, hapd->conf->num_deny_mac, req->sa, NULL)) {
wpa_printf(MSG_DEBUG, "MANA: Station MAC is not authorised by deny ACL: " MACSTR, MAC2STR(req->sa));
return NULL; //MAC is in deny list, back out and don't send
}
}
wpa_printf(MSG_INFO, "MANA: Station MAC is authorised by ACL: " MACSTR, MAC2STR(req->sa));
}
//MANA END
if (req)
os_memcpy(resp->da, req->sa, ETH_ALEN);
os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
resp->u.probe_resp.beacon_int =
host_to_le16(hapd->iconf->beacon_int);
/* hardware or low-level driver will setup seq_ctrl and timestamp */
resp->u.probe_resp.capab_info =
host_to_le16(hostapd_own_capab_info(hapd, sta, 1)); // MANA - FOLLOW
pos = resp->u.probe_resp.variable;
*pos++ = WLAN_EID_SSID;
// MANA START
if (hapd->iconf->enable_mana && ssid_len > 0) {
*pos++ = ssid_len;
os_memcpy(pos, ssid, ssid_len);
pos += ssid_len;
} else {
*pos++ = hapd->conf->ssid.ssid_len;
os_memcpy(pos, hapd->conf->ssid.ssid, hapd->conf->ssid.ssid_len);
pos += hapd->conf->ssid.ssid_len;
}
// MANA END
/* Supported rates */
pos = hostapd_eid_supp_rates(hapd, pos);
/* DS Params */
pos = hostapd_eid_ds_params(hapd, pos);
pos = hostapd_eid_country(hapd, pos, epos - pos);
/* Power Constraint element */
pos = hostapd_eid_pwr_constraint(hapd, pos);
/* ERP Information element */
pos = hostapd_eid_erp_info(hapd, pos);
/* Extended supported rates */
pos = hostapd_eid_ext_supp_rates(hapd, pos);
/* RSN, MDIE, WPA */
pos = hostapd_eid_wpa(hapd, pos, epos - pos);
pos = hostapd_eid_bss_load(hapd, pos, epos - pos);
#ifdef CONFIG_IEEE80211N
pos = hostapd_eid_ht_capabilities(hapd, pos);
pos = hostapd_eid_ht_operation(hapd, pos);
#endif /* CONFIG_IEEE80211N */
pos = hostapd_eid_ext_capab(hapd, pos);
pos = hostapd_eid_time_adv(hapd, pos);
pos = hostapd_eid_time_zone(hapd, pos);
pos = hostapd_eid_interworking(hapd, pos);
pos = hostapd_eid_adv_proto(hapd, pos);
pos = hostapd_eid_roaming_consortium(hapd, pos);
pos = hostapd_add_csa_elems(hapd, pos, (u8 *)resp,
&hapd->cs_c_off_proberesp);
#ifdef CONFIG_IEEE80211AC
pos = hostapd_eid_vht_capabilities(hapd, pos);
pos = hostapd_eid_vht_operation(hapd, pos);
#endif /* CONFIG_IEEE80211AC */
/* Wi-Fi Alliance WMM */
pos = hostapd_eid_wmm(hapd, pos);
#ifdef CONFIG_WPS
if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) {
os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie),
wpabuf_len(hapd->wps_probe_resp_ie));
pos += wpabuf_len(hapd->wps_probe_resp_ie);
}
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
if ((hapd->conf->p2p & P2P_ENABLED) && is_p2p &&
hapd->p2p_probe_resp_ie) {
os_memcpy(pos, wpabuf_head(hapd->p2p_probe_resp_ie),
wpabuf_len(hapd->p2p_probe_resp_ie));
pos += wpabuf_len(hapd->p2p_probe_resp_ie);
}
#endif /* CONFIG_P2P */
#ifdef CONFIG_P2P_MANAGER
if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
P2P_MANAGE)
pos = hostapd_eid_p2p_manage(hapd, pos);
#endif /* CONFIG_P2P_MANAGER */
#ifdef CONFIG_HS20
pos = hostapd_eid_hs20_indication(hapd, pos);
pos = hostapd_eid_osen(hapd, pos);
#endif /* CONFIG_HS20 */
if (hapd->conf->vendor_elements) {
os_memcpy(pos, wpabuf_head(hapd->conf->vendor_elements),
wpabuf_len(hapd->conf->vendor_elements));
pos += wpabuf_len(hapd->conf->vendor_elements);
}
*resp_len = pos - (u8 *) resp;
return (u8 *) resp;
}
int hostapd_set_ap_wps_ie(struct hostapd_data *hapd)
{
struct wpabuf *beacon, *proberesp, *assocresp = NULL;
int ret;
if (hapd->driver == NULL || hapd->driver->set_ap_wps_ie == NULL)
return 0;
beacon = hapd->wps_beacon_ie;
proberesp = hapd->wps_probe_resp_ie;
#ifdef CONFIG_P2P
if (hapd->wps_beacon_ie == NULL && hapd->p2p_beacon_ie == NULL)
beacon = NULL;
else {
beacon = wpabuf_alloc((hapd->wps_beacon_ie ?
wpabuf_len(hapd->wps_beacon_ie) : 0) +
(hapd->p2p_beacon_ie ?
wpabuf_len(hapd->p2p_beacon_ie) : 0));
if (beacon == NULL)
return -1;
if (hapd->wps_beacon_ie)
wpabuf_put_buf(beacon, hapd->wps_beacon_ie);
if (hapd->p2p_beacon_ie)
wpabuf_put_buf(beacon, hapd->p2p_beacon_ie);
}
if (hapd->wps_probe_resp_ie == NULL && hapd->p2p_probe_resp_ie == NULL)
proberesp = NULL;
else {
proberesp = wpabuf_alloc(
(hapd->wps_probe_resp_ie ?
wpabuf_len(hapd->wps_probe_resp_ie) : 0) +
(hapd->p2p_probe_resp_ie ?
wpabuf_len(hapd->p2p_probe_resp_ie) : 0));
if (proberesp == NULL) {
wpabuf_free(beacon);
return -1;
}
if (hapd->wps_probe_resp_ie)
wpabuf_put_buf(proberesp, hapd->wps_probe_resp_ie);
if (hapd->p2p_probe_resp_ie)
wpabuf_put_buf(proberesp, hapd->p2p_probe_resp_ie);
}
#endif /* CONFIG_P2P */
#ifdef CONFIG_P2P_MANAGER
if (hapd->conf->p2p & P2P_MANAGE) {
struct wpabuf *a;
a = wpabuf_alloc(100 + (beacon ? wpabuf_len(beacon) : 0));
if (a) {
u8 *start, *p;
if (beacon)
wpabuf_put_buf(a, beacon);
if (beacon != hapd->wps_beacon_ie)
wpabuf_free(beacon);
start = wpabuf_put(a, 0);
p = hostapd_eid_p2p_manage(hapd, start);
wpabuf_put(a, p - start);
beacon = a;
}
a = wpabuf_alloc(100 + (proberesp ? wpabuf_len(proberesp) :
0));
if (a) {
u8 *start, *p;
if (proberesp)
wpabuf_put_buf(a, proberesp);
if (proberesp != hapd->wps_probe_resp_ie)
wpabuf_free(proberesp);
start = wpabuf_put(a, 0);
p = hostapd_eid_p2p_manage(hapd, start);
wpabuf_put(a, p - start);
proberesp = a;
}
}
#endif /* CONFIG_P2P_MANAGER */
#ifdef CONFIG_WPS2
if (hapd->conf->wps_state)
assocresp = wps_build_assoc_resp_ie();
#endif /* CONFIG_WPS2 */
#ifdef CONFIG_P2P_MANAGER
if (hapd->conf->p2p & P2P_MANAGE) {
struct wpabuf *a;
a = wpabuf_alloc(100 + (assocresp ? wpabuf_len(assocresp) :
0));
if (a) {
u8 *start, *p;
start = wpabuf_put(a, 0);
p = hostapd_eid_p2p_manage(hapd, start);
wpabuf_put(a, p - start);
if (assocresp) {
wpabuf_put_buf(a, assocresp);
wpabuf_free(assocresp);
}
assocresp = a;
}
}
#endif /* CONFIG_P2P_MANAGER */
ret = hapd->driver->set_ap_wps_ie(hapd->drv_priv, beacon, proberesp,
assocresp);
if (beacon != hapd->wps_beacon_ie)
wpabuf_free(beacon);
if (proberesp != hapd->wps_probe_resp_ie)
wpabuf_free(proberesp);
wpabuf_free(assocresp);
return ret;
}