/*
* hostapd / Callback functions for driver wrappers
* Copyright (c) 2002-2013, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "utils/includes.h"
#include "utils/common.h"
#include "utils/eloop.h"
#include "radius/radius.h"
#include "drivers/driver.h"
#include "common/ieee802_11_defs.h"
#include "common/ieee802_11_common.h"
#include "common/wpa_ctrl.h"
#include "crypto/random.h"
#include "p2p/p2p.h"
#include "wps/wps.h"
#include "fst/fst.h"
#include "wnm_ap.h"
#include "hostapd.h"
#include "ieee802_11.h"
#include "ieee802_11_auth.h"
#include "sta_info.h"
#include "accounting.h"
#include "tkip_countermeasures.h"
#include "ieee802_1x.h"
#include "wpa_auth.h"
#include "wps_hostapd.h"
#include "ap_drv_ops.h"
#include "ap_config.h"
#include "hw_features.h"
#include "dfs.h"
#include "beacon.h"
#include "mbo_ap.h"
int hostapd_notif_assoc(struct hostapd_data *hapd, const u8 *addr,
const u8 *req_ies, size_t req_ies_len, int reassoc)
{
struct sta_info *sta;
int new_assoc, res;
struct ieee802_11_elems elems;
const u8 *ie;
size_t ielen;
#if defined(CONFIG_IEEE80211R_AP) || defined(CONFIG_IEEE80211W)
u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
u8 *p = buf;
#endif /* CONFIG_IEEE80211R_AP || CONFIG_IEEE80211W */
u16 reason = WLAN_REASON_UNSPECIFIED;
u16 status = WLAN_STATUS_SUCCESS;
const u8 *p2p_dev_addr = NULL;
if (addr == NULL) {
/*
* This could potentially happen with unexpected event from the
* driver wrapper. This was seen at least in one case where the
* driver ended up being set to station mode while hostapd was
* running, so better make sure we stop processing such an
* event here.
*/
wpa_printf(MSG_DEBUG,
"hostapd_notif_assoc: Skip event with no address");
return -1;
}
random_add_randomness(addr, ETH_ALEN);
hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_INFO, "associated");
ieee802_11_parse_elems(req_ies, req_ies_len, &elems, 0);
if (elems.wps_ie) {
ie = elems.wps_ie - 2;
ielen = elems.wps_ie_len + 2;
wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)AssocReq");
} else if (elems.rsn_ie) {
ie = elems.rsn_ie - 2;
ielen = elems.rsn_ie_len + 2;
wpa_printf(MSG_DEBUG, "STA included RSN IE in (Re)AssocReq");
} else if (elems.wpa_ie) {
ie = elems.wpa_ie - 2;
ielen = elems.wpa_ie_len + 2;
wpa_printf(MSG_DEBUG, "STA included WPA IE in (Re)AssocReq");
#ifdef CONFIG_HS20
} else if (elems.osen) {
ie = elems.osen - 2;
ielen = elems.osen_len + 2;
wpa_printf(MSG_DEBUG, "STA included OSEN IE in (Re)AssocReq");
#endif /* CONFIG_HS20 */
} else {
ie = NULL;
ielen = 0;
wpa_printf(MSG_DEBUG,
"STA did not include WPS/RSN/WPA IE in (Re)AssocReq");
}
sta = ap_get_sta(hapd, addr);
if (sta) {
ap_sta_no_session_timeout(hapd, sta);
accounting_sta_stop(hapd, sta);
/*
* Make sure that the previously registered inactivity timer
* will not remove the STA immediately.
*/
sta->timeout_next = STA_NULLFUNC;
} else {
sta = ap_sta_add(hapd, addr);
if (sta == NULL) {
hostapd_drv_sta_disassoc(hapd, addr,
WLAN_REASON_DISASSOC_AP_BUSY);
return -1;
}
}
sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS | WLAN_STA_WPS2);
/*
* ACL configurations to the drivers (implementing AP SME and ACL
* offload) without hostapd's knowledge, can result in a disconnection
* though the driver accepts the connection. Skip the hostapd check for
* ACL if the driver supports ACL offload to avoid potentially
* conflicting ACL rules.
*/
if (hapd->iface->drv_max_acl_mac_addrs == 0 &&
hostapd_check_acl(hapd, addr, NULL) != HOSTAPD_ACL_ACCEPT) {
wpa_printf(MSG_INFO, "STA " MACSTR " not allowed to connect",
MAC2STR(addr));
reason = WLAN_REASON_UNSPECIFIED;
goto fail;
}
#ifdef CONFIG_P2P
if (elems.p2p) {
wpabuf_free(sta->p2p_ie);
sta->p2p_ie = ieee802_11_vendor_ie_concat(req_ies, req_ies_len,
P2P_IE_VENDOR_TYPE);
if (sta->p2p_ie)
p2p_dev_addr = p2p_get_go_dev_addr(sta->p2p_ie);
}
#endif /* CONFIG_P2P */
#ifdef CONFIG_IEEE80211N
#ifdef NEED_AP_MLME
if (elems.ht_capabilities &&
(hapd->iface->conf->ht_capab &
HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) {
struct ieee80211_ht_capabilities *ht_cap =
(struct ieee80211_ht_capabilities *)
elems.ht_capabilities;
if (le_to_host16(ht_cap->ht_capabilities_info) &
HT_CAP_INFO_40MHZ_INTOLERANT)
ht40_intolerant_add(hapd->iface, sta);
}
#endif /* NEED_AP_MLME */
#endif /* CONFIG_IEEE80211N */
#ifdef CONFIG_INTERWORKING
if (elems.ext_capab && elems.ext_capab_len > 4) {
if (elems.ext_capab[4] & 0x01)
sta->qos_map_enabled = 1;
}
#endif /* CONFIG_INTERWORKING */
#ifdef CONFIG_HS20
wpabuf_free(sta->hs20_ie);
if (elems.hs20 && elems.hs20_len > 4) {
sta->hs20_ie = wpabuf_alloc_copy(elems.hs20 + 4,
elems.hs20_len - 4);
} else
sta->hs20_ie = NULL;
#endif /* CONFIG_HS20 */
#ifdef CONFIG_FST
wpabuf_free(sta->mb_ies);
if (hapd->iface->fst)
sta->mb_ies = mb_ies_by_info(&elems.mb_ies);
else
sta->mb_ies = NULL;
#endif /* CONFIG_FST */
mbo_ap_check_sta_assoc(hapd, sta, &elems);
ap_copy_sta_supp_op_classes(sta, elems.supp_op_classes,
elems.supp_op_classes_len);
if (hapd->conf->wpa) {
if (ie == NULL || ielen == 0) {
#ifdef CONFIG_WPS
if (hapd->conf->wps_state) {
wpa_printf(MSG_DEBUG,
"STA did not include WPA/RSN IE in (Re)Association Request - possible WPS use");
sta->flags |= WLAN_STA_MAYBE_WPS;
goto skip_wpa_check;
}
#endif /* CONFIG_WPS */
wpa_printf(MSG_DEBUG, "No WPA/RSN IE from STA");
return -1;
}
#ifdef CONFIG_WPS
if (hapd->conf->wps_state && ie[0] == 0xdd && ie[1] >= 4 &&
os_memcmp(ie + 2, "\x00\x50\xf2\x04", 4) == 0) {
struct wpabuf *wps;
sta->flags |= WLAN_STA_WPS;
wps = ieee802_11_vendor_ie_concat(ie, ielen,
WPS_IE_VENDOR_TYPE);
if (wps) {
if (wps_is_20(wps)) {
wpa_printf(MSG_DEBUG,
"WPS: STA supports WPS 2.0");
sta->flags |= WLAN_STA_WPS2;
}
wpabuf_free(wps);
}
goto skip_wpa_check;
}
#endif /* CONFIG_WPS */
if (sta->wpa_sm == NULL)
sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
sta->addr,
p2p_dev_addr);
if (sta->wpa_sm == NULL) {
wpa_printf(MSG_ERROR,
"Failed to initialize WPA state machine");
return -1;
}
res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
ie, ielen,
elems.mdie, elems.mdie_len);
if (res != WPA_IE_OK) {
wpa_printf(MSG_DEBUG,
"WPA/RSN information element rejected? (res %u)",
res);
wpa_hexdump(MSG_DEBUG, "IE", ie, ielen);
if (res == WPA_INVALID_GROUP) {
reason = WLAN_REASON_GROUP_CIPHER_NOT_VALID;
status = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
} else if (res == WPA_INVALID_PAIRWISE) {
reason = WLAN_REASON_PAIRWISE_CIPHER_NOT_VALID;
status = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
} else if (res == WPA_INVALID_AKMP) {
reason = WLAN_REASON_AKMP_NOT_VALID;
status = WLAN_STATUS_AKMP_NOT_VALID;
}
#ifdef CONFIG_IEEE80211W
else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION) {
reason = WLAN_REASON_INVALID_IE;
status = WLAN_STATUS_INVALID_IE;
} else if (res == WPA_INVALID_MGMT_GROUP_CIPHER) {
reason = WLAN_REASON_GROUP_CIPHER_NOT_VALID;
status = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
}
#endif /* CONFIG_IEEE80211W */
else {
reason = WLAN_REASON_INVALID_IE;
status = WLAN_STATUS_INVALID_IE;
}
goto fail;
}
#ifdef CONFIG_IEEE80211W
if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
sta->sa_query_count > 0)
ap_check_sa_query_timeout(hapd, sta);
if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
(sta->auth_alg != WLAN_AUTH_FT)) {
/*
* STA has already been associated with MFP and SA
* Query timeout has not been reached. Reject the
* association attempt temporarily and start SA Query,
* if one is not pending.
*/
if (sta->sa_query_count == 0)
ap_sta_start_sa_query(hapd, sta);
status = WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
hostapd_sta_assoc(hapd, addr, reassoc, status, buf,
p - buf);
return 0;
}
if (wpa_auth_uses_mfp(sta->wpa_sm))
sta->flags |= WLAN_STA_MFP;
else
sta->flags &= ~WLAN_STA_MFP;
#endif /* CONFIG_IEEE80211W */
#ifdef CONFIG_IEEE80211R_AP
if (sta->auth_alg == WLAN_AUTH_FT) {
status = wpa_ft_validate_reassoc(sta->wpa_sm, req_ies,
req_ies_len);
if (status != WLAN_STATUS_SUCCESS) {
if (status == WLAN_STATUS_INVALID_PMKID)
reason = WLAN_REASON_INVALID_IE;
if (status == WLAN_STATUS_INVALID_MDIE)
reason = WLAN_REASON_INVALID_IE;
if (status == WLAN_STATUS_INVALID_FTIE)
reason = WLAN_REASON_INVALID_IE;
goto fail;
}
}
#endif /* CONFIG_IEEE80211R_AP */
} else if (hapd->conf->wps_state) {
#ifdef CONFIG_WPS
struct wpabuf *wps;
if (req_ies)
wps = ieee802_11_vendor_ie_concat(req_ies, req_ies_len,
WPS_IE_VENDOR_TYPE);
else
wps = NULL;
#ifdef CONFIG_WPS_STRICT
if (wps && wps_validate_assoc_req(wps) < 0) {
reason = WLAN_REASON_INVALID_IE;
status = WLAN_STATUS_INVALID_IE;
wpabuf_free(wps);
goto fail;
}
#endif /* CONFIG_WPS_STRICT */
if (wps) {
sta->flags |= WLAN_STA_WPS;
if (wps_is_20(wps)) {
wpa_printf(MSG_DEBUG,
"WPS: STA supports WPS 2.0");
sta->flags |= WLAN_STA_WPS2;
}
} else
sta->flags |= WLAN_STA_MAYBE_WPS;
wpabuf_free(wps);
#endif /* CONFIG_WPS */
#ifdef CONFIG_HS20
} else if (hapd->conf->osen) {
if (elems.osen == NULL) {
hostapd_logger(
hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_INFO,
"No HS 2.0 OSEN element in association request");
return WLAN_STATUS_INVALID_IE;
}
wpa_printf(MSG_DEBUG, "HS 2.0: OSEN association");
if (sta->wpa_sm == NULL)
sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
sta->addr, NULL);
if (sta->wpa_sm == NULL) {
wpa_printf(MSG_WARNING,
"Failed to initialize WPA state machine");
return WLAN_STATUS_UNSPECIFIED_FAILURE;
}
if (wpa_validate_osen(hapd->wpa_auth, sta->wpa_sm,
elems.osen - 2, elems.osen_len + 2) < 0)
return WLAN_STATUS_INVALID_IE;
#endif /* CONFIG_HS20 */
}
#ifdef CONFIG_MBO
if (hapd->conf->mbo_enabled && (hapd->conf->wpa & 2) &&
elems.mbo && sta->cell_capa && !(sta->flags & WLAN_STA_MFP) &&
hapd->conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
wpa_printf(MSG_INFO,
"MBO: Reject WPA2 association without PMF");
return WLAN_STATUS_UNSPECIFIED_FAILURE;
}
#endif /* CONFIG_MBO */
#ifdef CONFIG_WPS
skip_wpa_check:
#endif /* CONFIG_WPS */
#ifdef CONFIG_IEEE80211R_AP
p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, buf, sizeof(buf),
sta->auth_alg, req_ies, req_ies_len);
hostapd_sta_assoc(hapd, addr, reassoc, status, buf, p - buf);
if (sta->auth_alg == WLAN_AUTH_FT)
ap_sta_set_authorized(hapd, sta, 1);
#else /* CONFIG_IEEE80211R_AP */
/* Keep compiler silent about unused variables */
if (status) {
}
#endif /* CONFIG_IEEE80211R_AP */
new_assoc = (sta->flags & WLAN_STA_ASSOC) == 0;
sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC;
sta->flags &= ~WLAN_STA_WNM_SLEEP_MODE;
hostapd_set_sta_flags(hapd, sta);
if (reassoc && (sta->auth_alg == WLAN_AUTH_FT))
wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
else
wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
hostapd_new_assoc_sta(hapd, sta, !new_assoc);
ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
#ifdef CONFIG_P2P
if (req_ies) {
p2p_group_notif_assoc(hapd->p2p_group, sta->addr,
req_ies, req_ies_len);
}
#endif /* CONFIG_P2P */
return 0;
fail:
#ifdef CONFIG_IEEE80211R_AP
hostapd_sta_assoc(hapd, addr, reassoc, status, buf, p - buf);
#endif /* CONFIG_IEEE80211R_AP */
hostapd_drv_sta_disassoc(hapd, sta->addr, reason);
ap_free_sta(hapd, sta);
return -1;
}
void hostapd_notif_disassoc(struct hostapd_data *hapd, const u8 *addr)
{
struct sta_info *sta;
if (addr == NULL) {
/*
* This could potentially happen with unexpected event from the
* driver wrapper. This was seen at least in one case where the
* driver ended up reporting a station mode event while hostapd
* was running, so better make sure we stop processing such an
* event here.
*/
wpa_printf(MSG_DEBUG,
"hostapd_notif_disassoc: Skip event with no address");
return;
}
hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_INFO, "disassociated");
sta = ap_get_sta(hapd, addr);
if (sta == NULL) {
wpa_printf(MSG_DEBUG,
"Disassociation notification for unknown STA "
MACSTR, MAC2STR(addr));
return;
}
ap_sta_set_authorized(hapd, sta, 0);
sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
ap_free_sta(hapd, sta);
}
void hostapd_event_sta_low_ack(struct hostapd_data *hapd, const u8 *addr)
{
struct sta_info *sta = ap_get_sta(hapd, addr);
if (!sta || !hapd->conf->disassoc_low_ack)
return;
hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_INFO,
"disconnected due to excessive missing ACKs");
hostapd_drv_sta_disassoc(hapd, addr, WLAN_REASON_DISASSOC_LOW_ACK);
ap_sta_disassociate(hapd, sta, WLAN_REASON_DISASSOC_LOW_ACK);
}
void hostapd_event_ch_switch(struct hostapd_data *hapd, int freq, int ht,
int offset, int width, int cf1, int cf2)
{
#ifdef NEED_AP_MLME
int channel, chwidth, is_dfs;
u8 seg0_idx = 0, seg1_idx = 0;
hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_INFO,
"driver had channel switch: freq=%d, ht=%d, offset=%d, width=%d (%s), cf1=%d, cf2=%d",
freq, ht, offset, width, channel_width_to_string(width),
cf1, cf2);
hapd->iface->freq = freq;
channel = hostapd_hw_get_channel(hapd, freq);
if (!channel) {
hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_WARNING,
"driver switched to bad channel!");
return;
}
switch (width) {
case CHAN_WIDTH_80:
chwidth = VHT_CHANWIDTH_80MHZ;
break;
case CHAN_WIDTH_80P80:
chwidth = VHT_CHANWIDTH_80P80MHZ;
break;
case CHAN_WIDTH_160:
chwidth = VHT_CHANWIDTH_160MHZ;
break;
case CHAN_WIDTH_20_NOHT:
case CHAN_WIDTH_20:
case CHAN_WIDTH_40:
default:
chwidth = VHT_CHANWIDTH_USE_HT;
break;
}
switch (hapd->iface->current_mode->mode) {
case HOSTAPD_MODE_IEEE80211A:
if (cf1 > 5000)
seg0_idx = (cf1 - 5000) / 5;
if (cf2 > 5000)
seg1_idx = (cf2 - 5000) / 5;
break;
default:
ieee80211_freq_to_chan(cf1, &seg0_idx);
ieee80211_freq_to_chan(cf2, &seg1_idx);
break;
}
hapd->iconf->channel = channel;
hapd->iconf->ieee80211n = ht;
if (!ht)
hapd->iconf->ieee80211ac = 0;
hapd->iconf->secondary_channel = offset;
hapd->iconf->vht_oper_chwidth = chwidth;
hapd->iconf->vht_oper_centr_freq_seg0_idx = seg0_idx;
hapd->iconf->vht_oper_centr_freq_seg1_idx = seg1_idx;
is_dfs = ieee80211_is_dfs(freq);
if (hapd->csa_in_progress &&
freq == hapd->cs_freq_params.freq) {
hostapd_cleanup_cs_params(hapd);
ieee802_11_set_beacon(hapd);
wpa_msg(hapd->msg_ctx, MSG_INFO, AP_CSA_FINISHED
"freq=%d dfs=%d", freq, is_dfs);
} else if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) {
wpa_msg(hapd->msg_ctx, MSG_INFO, AP_CSA_FINISHED
"freq=%d dfs=%d", freq, is_dfs);
}
#endif /* NEED_AP_MLME */
}
void hostapd_event_connect_failed_reason(struct hostapd_data *hapd,
const u8 *addr, int reason_code)
{
switch (reason_code) {
case MAX_CLIENT_REACHED:
wpa_msg(hapd->msg_ctx, MSG_INFO, AP_REJECTED_MAX_STA MACSTR,
MAC2STR(addr));
break;
case BLOCKED_CLIENT:
wpa_msg(hapd->msg_ctx, MSG_INFO, AP_REJECTED_BLOCKED_STA MACSTR,
MAC2STR(addr));
break;
}
}
#ifdef CONFIG_ACS
void hostapd_acs_channel_selected(struct hostapd_data *hapd,
struct acs_selected_channels *acs_res)
{
int ret, i;
int err = 0;
if (hapd->iconf->channel) {
wpa_printf(MSG_INFO, "ACS: Channel was already set to %d",
hapd->iconf->channel);
return;
}
if (!hapd->iface->current_mode) {
for (i = 0; i < hapd->iface->num_hw_features; i++) {
struct hostapd_hw_modes *mode =
&hapd->iface->hw_features[i];
if (mode->mode == acs_res->hw_mode) {
hapd->iface->current_mode = mode;
break;
}
}
if (!hapd->iface->current_mode) {
hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_WARNING,
"driver selected to bad hw_mode");
err = 1;
goto out;
}
}
hapd->iface->freq = hostapd_hw_get_freq(hapd, acs_res->pri_channel);
if (!acs_res->pri_channel) {
hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_WARNING,
"driver switched to bad channel");
err = 1;
goto out;
}
hapd->iconf->channel = acs_res->pri_channel;
hapd->iconf->acs = 1;
if (acs_res->sec_channel == 0)
hapd->iconf->secondary_channel = 0;
else if (acs_res->sec_channel < acs_res->pri_channel)
hapd->iconf->secondary_channel = -1;
else if (acs_res->sec_channel > acs_res->pri_channel)
hapd->iconf->secondary_channel = 1;
else {
wpa_printf(MSG_ERROR, "Invalid secondary channel!");
err = 1;
goto out;
}
if (hapd->iface->conf->ieee80211ac) {
/* set defaults for backwards compatibility */
hapd->iconf->vht_oper_centr_freq_seg1_idx = 0;
hapd->iconf->vht_oper_centr_freq_seg0_idx = 0;
hapd->iconf->vht_oper_chwidth = VHT_CHANWIDTH_USE_HT;
if (acs_res->ch_width == 80) {
hapd->iconf->vht_oper_centr_freq_seg0_idx =
acs_res->vht_seg0_center_ch;
hapd->iconf->vht_oper_chwidth = VHT_CHANWIDTH_80MHZ;
} else if (acs_res->ch_width == 160) {
if (acs_res->vht_seg1_center_ch == 0) {
hapd->iconf->vht_oper_centr_freq_seg0_idx =
acs_res->vht_seg0_center_ch;
hapd->iconf->vht_oper_chwidth =
VHT_CHANWIDTH_160MHZ;
} else {
hapd->iconf->vht_oper_centr_freq_seg0_idx =
acs_res->vht_seg0_center_ch;
hapd->iconf->vht_oper_centr_freq_seg1_idx =
acs_res->vht_seg1_center_ch;
hapd->iconf->vht_oper_chwidth =
VHT_CHANWIDTH_80P80MHZ;
}
}
}
out:
ret = hostapd_acs_completed(hapd->iface, err);
if (ret) {
wpa_printf(MSG_ERROR,
"ACS: Possibly channel configuration is invalid");
}
}
#endif /* CONFIG_ACS */
int hostapd_probe_req_rx(struct hostapd_data *hapd, const u8 *sa, const u8 *da,
const u8 *bssid, const u8 *ie, size_t ie_len,
int ssi_signal)
{
size_t i;
int ret = 0;
if (sa == NULL || ie == NULL)
return -1;
random_add_randomness(sa, ETH_ALEN);
for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++) {
if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx,
sa, da, bssid, ie, ie_len,
ssi_signal) > 0) {
ret = 1;
break;
}
}
return ret;
}
#ifdef HOSTAPD
#ifdef CONFIG_IEEE80211R_AP
static void hostapd_notify_auth_ft_finish(void *ctx, const u8 *dst,
const u8 *bssid,
u16 auth_transaction, u16 status,
const u8 *ies, size_t ies_len)
{
struct hostapd_data *hapd = ctx;
struct sta_info *sta;
sta = ap_get_sta(hapd, dst);
if (sta == NULL)
return;
hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)");
sta->flags |= WLAN_STA_AUTH;
hostapd_sta_auth(hapd, dst, auth_transaction, status, ies, ies_len);
}
#endif /* CONFIG_IEEE80211R_AP */
static void hostapd_notif_auth(struct hostapd_data *hapd,
struct auth_info *rx_auth)
{
struct sta_info *sta;
u16 status = WLAN_STATUS_SUCCESS;
u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN];
size_t resp_ies_len = 0;
sta = ap_get_sta(hapd, rx_auth->peer);
if (!sta) {
sta = ap_sta_add(hapd, rx_auth->peer);
if (sta == NULL) {
status = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
goto fail;
}
}
sta->flags &= ~WLAN_STA_PREAUTH;
ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
#ifdef CONFIG_IEEE80211R_AP
if (rx_auth->auth_type == WLAN_AUTH_FT && hapd->wpa_auth) {
sta->auth_alg = WLAN_AUTH_FT;
if (sta->wpa_sm == NULL)
sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
sta->addr, NULL);
if (sta->wpa_sm == NULL) {
wpa_printf(MSG_DEBUG,
"FT: Failed to initialize WPA state machine");
status = WLAN_STATUS_UNSPECIFIED_FAILURE;
goto fail;
}
wpa_ft_process_auth(sta->wpa_sm, rx_auth->bssid,
rx_auth->auth_transaction, rx_auth->ies,
rx_auth->ies_len,
hostapd_notify_auth_ft_finish, hapd);
return;
}
#endif /* CONFIG_IEEE80211R_AP */
fail:
hostapd_sta_auth(hapd, rx_auth->peer, rx_auth->auth_transaction + 1,
status, resp_ies, resp_ies_len);
}
static void hostapd_action_rx(struct hostapd_data *hapd,
struct rx_mgmt *drv_mgmt)
{
struct ieee80211_mgmt *mgmt;
struct sta_info *sta;
size_t plen __maybe_unused;
u16 fc;
if (drv_mgmt->frame_len < 24 + 1)
return;
plen = drv_mgmt->frame_len - 24 - 1;
mgmt = (struct ieee80211_mgmt *) drv_mgmt->frame;
fc = le_to_host16(mgmt->frame_control);
if (WLAN_FC_GET_STYPE(fc) != WLAN_FC_STYPE_ACTION)
return; /* handled by the driver */
wpa_printf(MSG_DEBUG, "RX_ACTION cat %d action plen %d",
mgmt->u.action.category, (int) plen);
sta = ap_get_sta(hapd, mgmt->sa);
if (sta == NULL) {
wpa_printf(MSG_DEBUG, "%s: station not found", __func__);
return;
}
#ifdef CONFIG_IEEE80211R_AP
if (mgmt->u.action.category == WLAN_ACTION_FT) {
const u8 *payload = drv_mgmt->frame + 24 + 1;
wpa_ft_action_rx(sta->wpa_sm, payload, plen);
}
#endif /* CONFIG_IEEE80211R_AP */
#ifdef CONFIG_IEEE80211W
if (mgmt->u.action.category == WLAN_ACTION_SA_QUERY && plen >= 4) {
ieee802_11_sa_query_action(
hapd, mgmt->sa,
mgmt->u.action.u.sa_query_resp.action,
mgmt->u.action.u.sa_query_resp.trans_id);
}
#endif /* CONFIG_IEEE80211W */
#ifdef CONFIG_WNM
if (mgmt->u.action.category == WLAN_ACTION_WNM) {
ieee802_11_rx_wnm_action_ap(hapd, mgmt, drv_mgmt->frame_len);
}
#endif /* CONFIG_WNM */
#ifdef CONFIG_FST
if (mgmt->u.action.category == WLAN_ACTION_FST && hapd->iface->fst) {
fst_rx_action(hapd->iface->fst, mgmt, drv_mgmt->frame_len);
return;
}
#endif /* CONFIG_FST */
}
#ifdef NEED_AP_MLME
#define HAPD_BROADCAST ((struct hostapd_data *) -1)
static struct hostapd_data * get_hapd_bssid(struct hostapd_iface *iface,
const u8 *bssid)
{
size_t i;
if (bssid == NULL)
return NULL;
if (bssid[0] == 0xff && bssid[1] == 0xff && bssid[2] == 0xff &&
bssid[3] == 0xff && bssid[4] == 0xff && bssid[5] == 0xff)
return HAPD_BROADCAST;
for (i = 0; i < iface->num_bss; i++) {
if (os_memcmp(bssid, iface->bss[i]->own_addr, ETH_ALEN) == 0)
return iface->bss[i];
}
return NULL;
}
static void hostapd_rx_from_unknown_sta(struct hostapd_data *hapd,
const u8 *bssid, const u8 *addr,
int wds)
{
hapd = get_hapd_bssid(hapd->iface, bssid);
if (hapd == NULL || hapd == HAPD_BROADCAST)
return;
ieee802_11_rx_from_unknown(hapd, addr, wds);
}
static int hostapd_mgmt_rx(struct hostapd_data *hapd, struct rx_mgmt *rx_mgmt)
{
struct hostapd_iface *iface = hapd->iface;
const struct ieee80211_hdr *hdr;
const u8 *bssid;
struct hostapd_frame_info fi;
int ret;
#ifdef CONFIG_TESTING_OPTIONS
if (hapd->ext_mgmt_frame_handling) {
size_t hex_len = 2 * rx_mgmt->frame_len + 1;
char *hex = os_malloc(hex_len);
if (hex) {
wpa_snprintf_hex(hex, hex_len, rx_mgmt->frame,
rx_mgmt->frame_len);
wpa_msg(hapd->msg_ctx, MSG_INFO, "MGMT-RX %s", hex);
os_free(hex);
}
return 1;
}
#endif /* CONFIG_TESTING_OPTIONS */
hdr = (const struct ieee80211_hdr *) rx_mgmt->frame;
bssid = get_hdr_bssid(hdr, rx_mgmt->frame_len);
if (bssid == NULL)
return 0;
hapd = get_hapd_bssid(iface, bssid);
if (hapd == NULL) {
u16 fc = le_to_host16(hdr->frame_control);
/*
* Drop frames to unknown BSSIDs except for Beacon frames which
* could be used to update neighbor information.
*/
if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
hapd = iface->bss[0];
else
return 0;
}
os_memset(&fi, 0, sizeof(fi));
fi.datarate = rx_mgmt->datarate;
fi.ssi_signal = rx_mgmt->ssi_signal;
if (hapd == HAPD_BROADCAST) {
size_t i;
ret = 0;
for (i = 0; i < iface->num_bss; i++) {
/* if bss is set, driver will call this function for
* each bss individually. */
if (rx_mgmt->drv_priv &&
(iface->bss[i]->drv_priv != rx_mgmt->drv_priv))
continue;
if (ieee802_11_mgmt(iface->bss[i], rx_mgmt->frame,
rx_mgmt->frame_len, &fi) > 0)
ret = 1;
}
} else
ret = ieee802_11_mgmt(hapd, rx_mgmt->frame, rx_mgmt->frame_len,
&fi);
random_add_randomness(&fi, sizeof(fi));
return ret;
}
static void hostapd_mgmt_tx_cb(struct hostapd_data *hapd, const u8 *buf,
size_t len, u16 stype, int ok)
{
struct ieee80211_hdr *hdr;
struct hostapd_data *orig_hapd = hapd;
hdr = (struct ieee80211_hdr *) buf;
hapd = get_hapd_bssid(hapd->iface, get_hdr_bssid(hdr, len));
if (!hapd)
return;
if (hapd == HAPD_BROADCAST) {
if (stype != WLAN_FC_STYPE_ACTION || len <= 25 ||
buf[24] != WLAN_ACTION_PUBLIC)
return;
hapd = get_hapd_bssid(orig_hapd->iface, hdr->addr2);
if (!hapd || hapd == HAPD_BROADCAST)
return;
/*
* Allow processing of TX status for a Public Action frame that
* used wildcard BBSID.
*/
}
ieee802_11_mgmt_cb(hapd, buf, len, stype, ok);
}
#endif /* NEED_AP_MLME */
static int hostapd_event_new_sta(struct hostapd_data *hapd, const u8 *addr)
{
struct sta_info *sta = ap_get_sta(hapd, addr);
if (sta)
return 0;
wpa_printf(MSG_DEBUG, "Data frame from unknown STA " MACSTR
" - adding a new STA", MAC2STR(addr));
sta = ap_sta_add(hapd, addr);
if (sta) {
hostapd_new_assoc_sta(hapd, sta, 0);
} else {
wpa_printf(MSG_DEBUG, "Failed to add STA entry for " MACSTR,
MAC2STR(addr));
return -1;
}
return 0;
}
static void hostapd_event_eapol_rx(struct hostapd_data *hapd, const u8 *src,
const u8 *data, size_t data_len)
{
struct hostapd_iface *iface = hapd->iface;
struct sta_info *sta;
size_t j;
for (j = 0; j < iface->num_bss; j++) {
sta = ap_get_sta(iface->bss[j], src);
if (sta && sta->flags & WLAN_STA_ASSOC) {
hapd = iface->bss[j];
break;
}
}
ieee802_1x_receive(hapd, src, data, data_len);
}
#endif /* HOSTAPD */
static struct hostapd_channel_data * hostapd_get_mode_channel(
struct hostapd_iface *iface, unsigned int freq)
{
int i;
struct hostapd_channel_data *chan;
for (i = 0; i < iface->current_mode->num_channels; i++) {
chan = &iface->current_mode->channels[i];
if ((unsigned int) chan->freq == freq)
return chan;
}
return NULL;
}
static void hostapd_update_nf(struct hostapd_iface *iface,
struct hostapd_channel_data *chan,
struct freq_survey *survey)
{
if (!iface->chans_surveyed) {
chan->min_nf = survey->nf;
iface->lowest_nf = survey->nf;
} else {
if (dl_list_empty(&chan->survey_list))
chan->min_nf = survey->nf;
else if (survey->nf < chan->min_nf)
chan->min_nf = survey->nf;
if (survey->nf < iface->lowest_nf)
iface->lowest_nf = survey->nf;
}
}
static void hostapd_single_channel_get_survey(struct hostapd_iface *iface,
struct survey_results *survey_res)
{
struct hostapd_channel_data *chan;
struct freq_survey *survey;
u64 divisor, dividend;
survey = dl_list_first(&survey_res->survey_list, struct freq_survey,
list);
if (!survey || !survey->freq)
return;
chan = hostapd_get_mode_channel(iface, survey->freq);
if (!chan || chan->flag & HOSTAPD_CHAN_DISABLED)
return;
wpa_printf(MSG_DEBUG,
"Single Channel Survey: (freq=%d channel_time=%ld channel_time_busy=%ld)",
survey->freq,
(unsigned long int) survey->channel_time,
(unsigned long int) survey->channel_time_busy);
if (survey->channel_time > iface->last_channel_time &&
survey->channel_time > survey->channel_time_busy) {
dividend = survey->channel_time_busy -
iface->last_channel_time_busy;
divisor = survey->channel_time - iface->last_channel_time;
iface->channel_utilization = dividend * 255 / divisor;
wpa_printf(MSG_DEBUG, "Channel Utilization: %d",
iface->channel_utilization);
}
iface->last_channel_time = survey->channel_time;
iface->last_channel_time_busy = survey->channel_time_busy;
}
void hostapd_event_get_survey(struct hostapd_iface *iface,
struct survey_results *survey_results)
{
struct freq_survey *survey, *tmp;
struct hostapd_channel_data *chan;
if (dl_list_empty(&survey_results->survey_list)) {
wpa_printf(MSG_DEBUG, "No survey data received");
return;
}
if (survey_results->freq_filter) {
hostapd_single_channel_get_survey(iface, survey_results);
return;
}
dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
struct freq_survey, list) {
chan = hostapd_get_mode_channel(iface, survey->freq);
if (!chan)
continue;
if (chan->flag & HOSTAPD_CHAN_DISABLED)
continue;
dl_list_del(&survey->list);
dl_list_add_tail(&chan->survey_list, &survey->list);
hostapd_update_nf(iface, chan, survey);
iface->chans_surveyed++;
}
}
#ifdef HOSTAPD
#ifdef NEED_AP_MLME
static void hostapd_event_iface_unavailable(struct hostapd_data *hapd)
{
wpa_printf(MSG_DEBUG, "Interface %s is unavailable -- stopped",
hapd->conf->iface);
if (hapd->csa_in_progress) {
wpa_printf(MSG_INFO, "CSA failed (%s was stopped)",
hapd->conf->iface);
hostapd_switch_channel_fallback(hapd->iface,
&hapd->cs_freq_params);
}
}
static void hostapd_event_dfs_radar_detected(struct hostapd_data *hapd,
struct dfs_event *radar)
{
wpa_printf(MSG_DEBUG, "DFS radar detected on %d MHz", radar->freq);
hostapd_dfs_radar_detected(hapd->iface, radar->freq, radar->ht_enabled,
radar->chan_offset, radar->chan_width,
radar->cf1, radar->cf2);
}
static void hostapd_event_dfs_cac_finished(struct hostapd_data *hapd,
struct dfs_event *radar)
{
wpa_printf(MSG_DEBUG, "DFS CAC finished on %d MHz", radar->freq);
hostapd_dfs_complete_cac(hapd->iface, 1, radar->freq, radar->ht_enabled,
radar->chan_offset, radar->chan_width,
radar->cf1, radar->cf2);
}
static void hostapd_event_dfs_cac_aborted(struct hostapd_data *hapd,
struct dfs_event *radar)
{
wpa_printf(MSG_DEBUG, "DFS CAC aborted on %d MHz", radar->freq);
hostapd_dfs_complete_cac(hapd->iface, 0, radar->freq, radar->ht_enabled,
radar->chan_offset, radar->chan_width,
radar->cf1, radar->cf2);
}
static void hostapd_event_dfs_nop_finished(struct hostapd_data *hapd,
struct dfs_event *radar)
{
wpa_printf(MSG_DEBUG, "DFS NOP finished on %d MHz", radar->freq);
hostapd_dfs_nop_finished(hapd->iface, radar->freq, radar->ht_enabled,
radar->chan_offset, radar->chan_width,
radar->cf1, radar->cf2);
}
static void hostapd_event_dfs_cac_started(struct hostapd_data *hapd,
struct dfs_event *radar)
{
wpa_printf(MSG_DEBUG, "DFS offload CAC started on %d MHz", radar->freq);
hostapd_dfs_start_cac(hapd->iface, radar->freq, radar->ht_enabled,
radar->chan_offset, radar->chan_width,
radar->cf1, radar->cf2);
}
#endif /* NEED_AP_MLME */
void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
union wpa_event_data *data)
{
struct hostapd_data *hapd = ctx;
#ifndef CONFIG_NO_STDOUT_DEBUG
int level = MSG_DEBUG;
if (event == EVENT_RX_MGMT && data->rx_mgmt.frame &&
data->rx_mgmt.frame_len >= 24) {
const struct ieee80211_hdr *hdr;
u16 fc;
hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
fc = le_to_host16(hdr->frame_control);
if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
level = MSG_EXCESSIVE;
if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_REQ)
level = MSG_EXCESSIVE;
}
wpa_dbg(hapd->msg_ctx, level, "Event %s (%d) received",
event_to_string(event), event);
#endif /* CONFIG_NO_STDOUT_DEBUG */
switch (event) {
case EVENT_MICHAEL_MIC_FAILURE:
michael_mic_failure(hapd, data->michael_mic_failure.src, 1);
break;
case EVENT_SCAN_RESULTS:
if (hapd->iface->scan_cb)
hapd->iface->scan_cb(hapd->iface);
break;
case EVENT_WPS_BUTTON_PUSHED:
hostapd_wps_button_pushed(hapd, NULL);
break;
#ifdef NEED_AP_MLME
case EVENT_TX_STATUS:
switch (data->tx_status.type) {
case WLAN_FC_TYPE_MGMT:
hostapd_mgmt_tx_cb(hapd, data->tx_status.data,
data->tx_status.data_len,
data->tx_status.stype,
data->tx_status.ack);
break;
case WLAN_FC_TYPE_DATA:
hostapd_tx_status(hapd, data->tx_status.dst,
data->tx_status.data,
data->tx_status.data_len,
data->tx_status.ack);
break;
}
break;
case EVENT_EAPOL_TX_STATUS:
hostapd_eapol_tx_status(hapd, data->eapol_tx_status.dst,
data->eapol_tx_status.data,
data->eapol_tx_status.data_len,
data->eapol_tx_status.ack);
break;
case EVENT_DRIVER_CLIENT_POLL_OK:
hostapd_client_poll_ok(hapd, data->client_poll.addr);
break;
case EVENT_RX_FROM_UNKNOWN:
hostapd_rx_from_unknown_sta(hapd, data->rx_from_unknown.bssid,
data->rx_from_unknown.addr,
data->rx_from_unknown.wds);
break;
#endif /* NEED_AP_MLME */
case EVENT_RX_MGMT:
if (!data->rx_mgmt.frame)
break;
#ifdef NEED_AP_MLME
if (hostapd_mgmt_rx(hapd, &data->rx_mgmt) > 0)
break;
#endif /* NEED_AP_MLME */
hostapd_action_rx(hapd, &data->rx_mgmt);
break;
case EVENT_RX_PROBE_REQ:
if (data->rx_probe_req.sa == NULL ||
data->rx_probe_req.ie == NULL)
break;
hostapd_probe_req_rx(hapd, data->rx_probe_req.sa,
data->rx_probe_req.da,
data->rx_probe_req.bssid,
data->rx_probe_req.ie,
data->rx_probe_req.ie_len,
data->rx_probe_req.ssi_signal);
break;
case EVENT_NEW_STA:
hostapd_event_new_sta(hapd, data->new_sta.addr);
break;
case EVENT_EAPOL_RX:
hostapd_event_eapol_rx(hapd, data->eapol_rx.src,
data->eapol_rx.data,
data->eapol_rx.data_len);
break;
case EVENT_ASSOC:
if (!data)
return;
hostapd_notif_assoc(hapd, data->assoc_info.addr,
data->assoc_info.req_ies,
data->assoc_info.req_ies_len,
data->assoc_info.reassoc);
break;
case EVENT_DISASSOC:
if (data)
hostapd_notif_disassoc(hapd, data->disassoc_info.addr);
break;
case EVENT_DEAUTH:
if (data)
hostapd_notif_disassoc(hapd, data->deauth_info.addr);
break;
case EVENT_STATION_LOW_ACK:
if (!data)
break;
hostapd_event_sta_low_ack(hapd, data->low_ack.addr);
break;
case EVENT_AUTH:
hostapd_notif_auth(hapd, &data->auth);
break;
case EVENT_CH_SWITCH:
if (!data)
break;
hostapd_event_ch_switch(hapd, data->ch_switch.freq,
data->ch_switch.ht_enabled,
data->ch_switch.ch_offset,
data->ch_switch.ch_width,
data->ch_switch.cf1,
data->ch_switch.cf2);
break;
case EVENT_CONNECT_FAILED_REASON:
if (!data)
break;
hostapd_event_connect_failed_reason(
hapd, data->connect_failed_reason.addr,
data->connect_failed_reason.code);
break;
case EVENT_SURVEY:
hostapd_event_get_survey(hapd->iface, &data->survey_results);
break;
#ifdef NEED_AP_MLME
case EVENT_INTERFACE_UNAVAILABLE:
hostapd_event_iface_unavailable(hapd);
break;
case EVENT_DFS_RADAR_DETECTED:
if (!data)
break;
hostapd_event_dfs_radar_detected(hapd, &data->dfs_event);
break;
case EVENT_DFS_CAC_FINISHED:
if (!data)
break;
hostapd_event_dfs_cac_finished(hapd, &data->dfs_event);
break;
case EVENT_DFS_CAC_ABORTED:
if (!data)
break;
hostapd_event_dfs_cac_aborted(hapd, &data->dfs_event);
break;
case EVENT_DFS_NOP_FINISHED:
if (!data)
break;
hostapd_event_dfs_nop_finished(hapd, &data->dfs_event);
break;
case EVENT_CHANNEL_LIST_CHANGED:
/* channel list changed (regulatory?), update channel list */
/* TODO: check this. hostapd_get_hw_features() initializes
* too much stuff. */
/* hostapd_get_hw_features(hapd->iface); */
hostapd_channel_list_updated(
hapd->iface, data->channel_list_changed.initiator);
break;
case EVENT_DFS_CAC_STARTED:
if (!data)
break;
hostapd_event_dfs_cac_started(hapd, &data->dfs_event);
break;
#endif /* NEED_AP_MLME */
case EVENT_INTERFACE_ENABLED:
wpa_msg(hapd->msg_ctx, MSG_INFO, INTERFACE_ENABLED);
if (hapd->disabled && hapd->started) {
hapd->disabled = 0;
/*
* Try to re-enable interface if the driver stopped it
* when the interface got disabled.
*/
wpa_auth_reconfig_group_keys(hapd->wpa_auth);
hapd->reenable_beacon = 1;
ieee802_11_set_beacon(hapd);
}
break;
case EVENT_INTERFACE_DISABLED:
hostapd_free_stas(hapd);
wpa_msg(hapd->msg_ctx, MSG_INFO, INTERFACE_DISABLED);
hapd->disabled = 1;
break;
#ifdef CONFIG_ACS
case EVENT_ACS_CHANNEL_SELECTED:
hostapd_acs_channel_selected(hapd,
&data->acs_selected_channels);
break;
#endif /* CONFIG_ACS */
default:
wpa_printf(MSG_DEBUG, "Unknown event %d", event);
break;
}
}
void wpa_supplicant_event_global(void *ctx, enum wpa_event_type event,
union wpa_event_data *data)
{
struct hapd_interfaces *interfaces = ctx;
struct hostapd_data *hapd;
if (event != EVENT_INTERFACE_STATUS)
return;
hapd = hostapd_get_iface(interfaces, data->interface_status.ifname);
if (hapd && hapd->driver && hapd->driver->get_ifindex &&
hapd->drv_priv) {
unsigned int ifindex;
ifindex = hapd->driver->get_ifindex(hapd->drv_priv);
if (ifindex != data->interface_status.ifindex) {
wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
"interface status ifindex %d mismatch (%d)",
ifindex, data->interface_status.ifindex);
return;
}
}
if (hapd)
wpa_supplicant_event(hapd, event, data);
}
#endif /* HOSTAPD */