Amazing-Mirror/fragattacks
1
0
Fork 0
mirror of https://github.com/vanhoefm/fragattacks.git synced 2024-12-11 00:28:19 -05:00
Code Issues Projects Releases Wiki Activity
c6b5b9a33b
fragattacks/src/ap/hostapd.c
Jouni Malinen 2f1357fb62 FILS: Accept another (Re)Association Request frame during an association 
The previous implementation ended up starting a new EAPOL-Key 4-way
handshake if the STA were to attempt to perform another association.
This resulted in immediate disconnection since the PTK was not ready for
configuring FILS TK at the point when EAPOL-Key msg 1/4 is sent out.
This is better than alloing the association to continue with the same TK
reconfigured, but not really ideal.

Address this potential sequence by not starting a new 4-way handshake on
the additional association attempt. Instead, allow the association to
complete, but do so without reconfiguring the TK to avoid potential
issues with PN reuse with the same TK.

Signed-off-by: Jouni Malinen <j@w1.fi>
2017-10-16 02:03:47 +03:00

3421 lines
86 KiB
C
Raw Blame History

/*
* hostapd / Initialization and configuration
* Copyright (c) 2002-2014, 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 "common/ieee802_11_defs.h"
#include "common/wpa_ctrl.h"
#include "common/hw_features_common.h"
#include "radius/radius_client.h"
#include "radius/radius_das.h"
#include "eap_server/tncs.h"
#include "eapol_auth/eapol_auth_sm.h"
#include "eapol_auth/eapol_auth_sm_i.h"
#include "fst/fst.h"
#include "hostapd.h"
#include "authsrv.h"
#include "sta_info.h"
#include "accounting.h"
#include "ap_list.h"
#include "beacon.h"
#include "iapp.h"
#include "ieee802_1x.h"
#include "ieee802_11_auth.h"
#include "vlan_init.h"
#include "wpa_auth.h"
#include "wps_hostapd.h"
#include "dpp_hostapd.h"
#include "gas_query_ap.h"
#include "hw_features.h"
#include "wpa_auth_glue.h"
#include "ap_drv_ops.h"
#include "ap_config.h"
#include "p2p_hostapd.h"
#include "gas_serv.h"
#include "dfs.h"
#include "ieee802_11.h"
#include "bss_load.h"
#include "x_snoop.h"
#include "dhcp_snoop.h"
#include "ndisc_snoop.h"
#include "neighbor_db.h"
#include "rrm.h"
#include "fils_hlp.h"
#include "acs.h"
static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason);
static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd);
static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd);
static int setup_interface2(struct hostapd_iface *iface);
static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx);
int hostapd_for_each_interface(struct hapd_interfaces *interfaces,
int (*cb)(struct hostapd_iface *iface,
void *ctx), void *ctx)
{
size_t i;
int ret;
for (i = 0; i < interfaces->count; i++) {
ret = cb(interfaces->iface[i], ctx);
if (ret)
return ret;
}
return 0;
}
static void hostapd_reload_bss(struct hostapd_data *hapd)
{
struct hostapd_ssid *ssid;
if (!hapd->started)
return;
#ifndef CONFIG_NO_RADIUS
radius_client_reconfig(hapd->radius, hapd->conf->radius);
#endif /* CONFIG_NO_RADIUS */
ssid = &hapd->conf->ssid;
if (!ssid->wpa_psk_set && ssid->wpa_psk && !ssid->wpa_psk->next &&
ssid->wpa_passphrase_set && ssid->wpa_passphrase) {
/*
* Force PSK to be derived again since SSID or passphrase may
* have changed.
*/
hostapd_config_clear_wpa_psk(&hapd->conf->ssid.wpa_psk);
}
if (hostapd_setup_wpa_psk(hapd->conf)) {
wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
"after reloading configuration");
}
if (hapd->conf->ieee802_1x || hapd->conf->wpa)
hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1);
else
hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
if ((hapd->conf->wpa || hapd->conf->osen) && hapd->wpa_auth == NULL) {
hostapd_setup_wpa(hapd);
if (hapd->wpa_auth)
wpa_init_keys(hapd->wpa_auth);
} else if (hapd->conf->wpa) {
const u8 *wpa_ie;
size_t wpa_ie_len;
hostapd_reconfig_wpa(hapd);
wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len))
wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
"the kernel driver.");
} else if (hapd->wpa_auth) {
wpa_deinit(hapd->wpa_auth);
hapd->wpa_auth = NULL;
hostapd_set_privacy(hapd, 0);
hostapd_setup_encryption(hapd->conf->iface, hapd);
hostapd_set_generic_elem(hapd, (u8 *) "", 0);
}
ieee802_11_set_beacon(hapd);
hostapd_update_wps(hapd);
if (hapd->conf->ssid.ssid_set &&
hostapd_set_ssid(hapd, hapd->conf->ssid.ssid,
hapd->conf->ssid.ssid_len)) {
wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
/* try to continue */
}
wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface);
}
static void hostapd_clear_old(struct hostapd_iface *iface)
{
size_t j;
/*
* Deauthenticate all stations since the new configuration may not
* allow them to use the BSS anymore.
*/
for (j = 0; j < iface->num_bss; j++) {
hostapd_flush_old_stations(iface->bss[j],
WLAN_REASON_PREV_AUTH_NOT_VALID);
hostapd_broadcast_wep_clear(iface->bss[j]);
#ifndef CONFIG_NO_RADIUS
/* TODO: update dynamic data based on changed configuration
* items (e.g., open/close sockets, etc.) */
radius_client_flush(iface->bss[j]->radius, 0);
#endif /* CONFIG_NO_RADIUS */
}
}
int hostapd_reload_config(struct hostapd_iface *iface)
{
struct hostapd_data *hapd = iface->bss[0];
struct hostapd_config *newconf, *oldconf;
size_t j;
if (iface->config_fname == NULL) {
/* Only in-memory config in use - assume it has been updated */
hostapd_clear_old(iface);
for (j = 0; j < iface->num_bss; j++)
hostapd_reload_bss(iface->bss[j]);
return 0;
}
if (iface->interfaces == NULL ||
iface->interfaces->config_read_cb == NULL)
return -1;
newconf = iface->interfaces->config_read_cb(iface->config_fname);
if (newconf == NULL)
return -1;
hostapd_clear_old(iface);
oldconf = hapd->iconf;
iface->conf = newconf;
for (j = 0; j < iface->num_bss; j++) {
hapd = iface->bss[j];
hapd->iconf = newconf;
hapd->iconf->channel = oldconf->channel;
hapd->iconf->acs = oldconf->acs;
hapd->iconf->secondary_channel = oldconf->secondary_channel;
hapd->iconf->ieee80211n = oldconf->ieee80211n;
hapd->iconf->ieee80211ac = oldconf->ieee80211ac;
hapd->iconf->ht_capab = oldconf->ht_capab;
hapd->iconf->vht_capab = oldconf->vht_capab;
hapd->iconf->vht_oper_chwidth = oldconf->vht_oper_chwidth;
hapd->iconf->vht_oper_centr_freq_seg0_idx =
oldconf->vht_oper_centr_freq_seg0_idx;
hapd->iconf->vht_oper_centr_freq_seg1_idx =
oldconf->vht_oper_centr_freq_seg1_idx;
hapd->conf = newconf->bss[j];
hostapd_reload_bss(hapd);
}
hostapd_config_free(oldconf);
return 0;
}
static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd,
const char *ifname)
{
int i;
if (!ifname || !hapd->drv_priv)
return;
for (i = 0; i < NUM_WEP_KEYS; i++) {
if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE, NULL, i,
0, NULL, 0, NULL, 0)) {
wpa_printf(MSG_DEBUG, "Failed to clear default "
"encryption keys (ifname=%s keyidx=%d)",
ifname, i);
}
}
#ifdef CONFIG_IEEE80211W
if (hapd->conf->ieee80211w) {
for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) {
if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE,
NULL, i, 0, NULL,
0, NULL, 0)) {
wpa_printf(MSG_DEBUG, "Failed to clear "
"default mgmt encryption keys "
"(ifname=%s keyidx=%d)", ifname, i);
}
}
}
#endif /* CONFIG_IEEE80211W */
}
static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd)
{
hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface);
return 0;
}
static int hostapd_broadcast_wep_set(struct hostapd_data *hapd)
{
int errors = 0, idx;
struct hostapd_ssid *ssid = &hapd->conf->ssid;
idx = ssid->wep.idx;
if (ssid->wep.default_len &&
hostapd_drv_set_key(hapd->conf->iface,
hapd, WPA_ALG_WEP, broadcast_ether_addr, idx,
1, NULL, 0, ssid->wep.key[idx],
ssid->wep.len[idx])) {
wpa_printf(MSG_WARNING, "Could not set WEP encryption.");
errors++;
}
return errors;
}
static void hostapd_free_hapd_data(struct hostapd_data *hapd)
{
os_free(hapd->probereq_cb);
hapd->probereq_cb = NULL;
hapd->num_probereq_cb = 0;
#ifdef CONFIG_P2P
wpabuf_free(hapd->p2p_beacon_ie);
hapd->p2p_beacon_ie = NULL;
wpabuf_free(hapd->p2p_probe_resp_ie);
hapd->p2p_probe_resp_ie = NULL;
#endif /* CONFIG_P2P */
if (!hapd->started) {
wpa_printf(MSG_ERROR, "%s: Interface %s wasn't started",
__func__, hapd->conf->iface);
return;
}
hapd->started = 0;
wpa_printf(MSG_DEBUG, "%s(%s)", __func__, hapd->conf->iface);
iapp_deinit(hapd->iapp);
hapd->iapp = NULL;
accounting_deinit(hapd);
hostapd_deinit_wpa(hapd);
vlan_deinit(hapd);
hostapd_acl_deinit(hapd);
#ifndef CONFIG_NO_RADIUS
radius_client_deinit(hapd->radius);
hapd->radius = NULL;
radius_das_deinit(hapd->radius_das);
hapd->radius_das = NULL;
#endif /* CONFIG_NO_RADIUS */
hostapd_deinit_wps(hapd);
#ifdef CONFIG_DPP
hostapd_dpp_deinit(hapd);
gas_query_ap_deinit(hapd->gas);
#endif /* CONFIG_DPP */
authsrv_deinit(hapd);
if (hapd->interface_added) {
hapd->interface_added = 0;
if (hostapd_if_remove(hapd, WPA_IF_AP_BSS, hapd->conf->iface)) {
wpa_printf(MSG_WARNING,
"Failed to remove BSS interface %s",
hapd->conf->iface);
hapd->interface_added = 1;
} else {
/*
* Since this was a dynamically added interface, the
* driver wrapper may have removed its internal instance
* and hapd->drv_priv is not valid anymore.
*/
hapd->drv_priv = NULL;
}
}
wpabuf_free(hapd->time_adv);
#ifdef CONFIG_INTERWORKING
gas_serv_deinit(hapd);
#endif /* CONFIG_INTERWORKING */
bss_load_update_deinit(hapd);
ndisc_snoop_deinit(hapd);
dhcp_snoop_deinit(hapd);
x_snoop_deinit(hapd);
#ifdef CONFIG_SQLITE
bin_clear_free(hapd->tmp_eap_user.identity,
hapd->tmp_eap_user.identity_len);
bin_clear_free(hapd->tmp_eap_user.password,
hapd->tmp_eap_user.password_len);
#endif /* CONFIG_SQLITE */
#ifdef CONFIG_MESH
wpabuf_free(hapd->mesh_pending_auth);
hapd->mesh_pending_auth = NULL;
#endif /* CONFIG_MESH */
hostapd_clean_rrm(hapd);
fils_hlp_deinit(hapd);
}
/**
* hostapd_cleanup - Per-BSS cleanup (deinitialization)
* @hapd: Pointer to BSS data
*
* This function is used to free all per-BSS data structures and resources.
* Most of the modules that are initialized in hostapd_setup_bss() are
* deinitialized here.
*/
static void hostapd_cleanup(struct hostapd_data *hapd)
{
wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s))", __func__, hapd,
hapd->conf->iface);
if (hapd->iface->interfaces &&
hapd->iface->interfaces->ctrl_iface_deinit) {
wpa_msg(hapd->msg_ctx, MSG_INFO, WPA_EVENT_TERMINATING);
hapd->iface->interfaces->ctrl_iface_deinit(hapd);
}
hostapd_free_hapd_data(hapd);
}
static void sta_track_deinit(struct hostapd_iface *iface)
{
struct hostapd_sta_info *info;
if (!iface->num_sta_seen)
return;
while ((info = dl_list_first(&iface->sta_seen, struct hostapd_sta_info,
list))) {
dl_list_del(&info->list);
iface->num_sta_seen--;
sta_track_del(info);
}
}
static void hostapd_cleanup_iface_partial(struct hostapd_iface *iface)
{
wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
#ifdef CONFIG_IEEE80211N
#ifdef NEED_AP_MLME
hostapd_stop_setup_timers(iface);
#endif /* NEED_AP_MLME */
#endif /* CONFIG_IEEE80211N */
if (iface->current_mode)
acs_cleanup(iface);
hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
iface->hw_features = NULL;
iface->current_mode = NULL;
os_free(iface->current_rates);
iface->current_rates = NULL;
os_free(iface->basic_rates);
iface->basic_rates = NULL;
ap_list_deinit(iface);
sta_track_deinit(iface);
}
/**
* hostapd_cleanup_iface - Complete per-interface cleanup
* @iface: Pointer to interface data
*
* This function is called after per-BSS data structures are deinitialized
* with hostapd_cleanup().
*/
static void hostapd_cleanup_iface(struct hostapd_iface *iface)
{
wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
hostapd_cleanup_iface_partial(iface);
hostapd_config_free(iface->conf);
iface->conf = NULL;
os_free(iface->config_fname);
os_free(iface->bss);
wpa_printf(MSG_DEBUG, "%s: free iface=%p", __func__, iface);
os_free(iface);
}
static void hostapd_clear_wep(struct hostapd_data *hapd)
{
if (hapd->drv_priv && !hapd->iface->driver_ap_teardown) {
hostapd_set_privacy(hapd, 0);
hostapd_broadcast_wep_clear(hapd);
}
}
static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
{
int i;
hostapd_broadcast_wep_set(hapd);
if (hapd->conf->ssid.wep.default_len) {
hostapd_set_privacy(hapd, 1);
return 0;
}
/*
* When IEEE 802.1X is not enabled, the driver may need to know how to
* set authentication algorithms for static WEP.
*/
hostapd_drv_set_authmode(hapd, hapd->conf->auth_algs);
for (i = 0; i < 4; i++) {
if (hapd->conf->ssid.wep.key[i] &&
hostapd_drv_set_key(iface, hapd, WPA_ALG_WEP, NULL, i,
i == hapd->conf->ssid.wep.idx, NULL, 0,
hapd->conf->ssid.wep.key[i],
hapd->conf->ssid.wep.len[i])) {
wpa_printf(MSG_WARNING, "Could not set WEP "
"encryption.");
return -1;
}
if (hapd->conf->ssid.wep.key[i] &&
i == hapd->conf->ssid.wep.idx)
hostapd_set_privacy(hapd, 1);
}
return 0;
}
static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason)
{
int ret = 0;
u8 addr[ETH_ALEN];
if (hostapd_drv_none(hapd) || hapd->drv_priv == NULL)
return 0;
if (!hapd->iface->driver_ap_teardown) {
wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
"Flushing old station entries");
if (hostapd_flush(hapd)) {
wpa_msg(hapd->msg_ctx, MSG_WARNING,
"Could not connect to kernel driver");
ret = -1;
}
}
if (hapd->conf && hapd->conf->broadcast_deauth) {
wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
"Deauthenticate all stations");
os_memset(addr, 0xff, ETH_ALEN);
hostapd_drv_sta_deauth(hapd, addr, reason);
}
hostapd_free_stas(hapd);
return ret;
}
static void hostapd_bss_deinit_no_free(struct hostapd_data *hapd)
{
hostapd_free_stas(hapd);
hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING);
hostapd_clear_wep(hapd);
}
/**
* hostapd_validate_bssid_configuration - Validate BSSID configuration
* @iface: Pointer to interface data
* Returns: 0 on success, -1 on failure
*
* This function is used to validate that the configured BSSIDs are valid.
*/
static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
{
u8 mask[ETH_ALEN] = { 0 };
struct hostapd_data *hapd = iface->bss[0];
unsigned int i = iface->conf->num_bss, bits = 0, j;
int auto_addr = 0;
if (hostapd_drv_none(hapd))
return 0;
if (iface->conf->use_driver_iface_addr)
return 0;
/* Generate BSSID mask that is large enough to cover the BSSIDs. */
/* Determine the bits necessary to cover the number of BSSIDs. */
for (i--; i; i >>= 1)
bits++;
/* Determine the bits necessary to any configured BSSIDs,
if they are higher than the number of BSSIDs. */
for (j = 0; j < iface->conf->num_bss; j++) {
if (is_zero_ether_addr(iface->conf->bss[j]->bssid)) {
if (j)
auto_addr++;
continue;
}
for (i = 0; i < ETH_ALEN; i++) {
mask[i] |=
iface->conf->bss[j]->bssid[i] ^
hapd->own_addr[i];
}
}
if (!auto_addr)
goto skip_mask_ext;
for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
;
j = 0;
if (i < ETH_ALEN) {
j = (5 - i) * 8;
while (mask[i] != 0) {
mask[i] >>= 1;
j++;
}
}
if (bits < j)
bits = j;
if (bits > 40) {
wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)",
bits);
return -1;
}
os_memset(mask, 0xff, ETH_ALEN);
j = bits / 8;
for (i = 5; i > 5 - j; i--)
mask[i] = 0;
j = bits % 8;
while (j--)
mask[i] <<= 1;
skip_mask_ext:
wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
(unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
if (!auto_addr)
return 0;
for (i = 0; i < ETH_ALEN; i++) {
if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR
" for start address " MACSTR ".",
MAC2STR(mask), MAC2STR(hapd->own_addr));
wpa_printf(MSG_ERROR, "Start address must be the "
"first address in the block (i.e., addr "
"AND mask == addr).");
return -1;
}
}
return 0;
}
static int mac_in_conf(struct hostapd_config *conf, const void *a)
{
size_t i;
for (i = 0; i < conf->num_bss; i++) {
if (hostapd_mac_comp(conf->bss[i]->bssid, a) == 0) {
return 1;
}
}
return 0;
}
#ifndef CONFIG_NO_RADIUS
static int hostapd_das_nas_mismatch(struct hostapd_data *hapd,
struct radius_das_attrs *attr)
{
if (attr->nas_identifier &&
(!hapd->conf->nas_identifier ||
os_strlen(hapd->conf->nas_identifier) !=
attr->nas_identifier_len ||
os_memcmp(hapd->conf->nas_identifier, attr->nas_identifier,
attr->nas_identifier_len) != 0)) {
wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-Identifier mismatch");
return 1;
}
if (attr->nas_ip_addr &&
(hapd->conf->own_ip_addr.af != AF_INET ||
os_memcmp(&hapd->conf->own_ip_addr.u.v4, attr->nas_ip_addr, 4) !=
0)) {
wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IP-Address mismatch");
return 1;
}
#ifdef CONFIG_IPV6
if (attr->nas_ipv6_addr &&
(hapd->conf->own_ip_addr.af != AF_INET6 ||
os_memcmp(&hapd->conf->own_ip_addr.u.v6, attr->nas_ipv6_addr, 16)
!= 0)) {
wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IPv6-Address mismatch");
return 1;
}
#endif /* CONFIG_IPV6 */
return 0;
}
static struct sta_info * hostapd_das_find_sta(struct hostapd_data *hapd,
struct radius_das_attrs *attr,
int *multi)
{
struct sta_info *selected, *sta;
char buf[128];
int num_attr = 0;
int count;
*multi = 0;
for (sta = hapd->sta_list; sta; sta = sta->next)
sta->radius_das_match = 1;
if (attr->sta_addr) {
num_attr++;
sta = ap_get_sta(hapd, attr->sta_addr);
if (!sta) {
wpa_printf(MSG_DEBUG,
"RADIUS DAS: No Calling-Station-Id match");
return NULL;
}
selected = sta;
for (sta = hapd->sta_list; sta; sta = sta->next) {
if (sta != selected)
sta->radius_das_match = 0;
}
wpa_printf(MSG_DEBUG, "RADIUS DAS: Calling-Station-Id match");
}
if (attr->acct_session_id) {
num_attr++;
if (attr->acct_session_id_len != 16) {
wpa_printf(MSG_DEBUG,
"RADIUS DAS: Acct-Session-Id cannot match");
return NULL;
}
count = 0;
for (sta = hapd->sta_list; sta; sta = sta->next) {
if (!sta->radius_das_match)
continue;
os_snprintf(buf, sizeof(buf), "%016llX",
(unsigned long long) sta->acct_session_id);
if (os_memcmp(attr->acct_session_id, buf, 16) != 0)
sta->radius_das_match = 0;
else
count++;
}
if (count == 0) {
wpa_printf(MSG_DEBUG,
"RADIUS DAS: No matches remaining after Acct-Session-Id check");
return NULL;
}
wpa_printf(MSG_DEBUG, "RADIUS DAS: Acct-Session-Id match");
}
if (attr->acct_multi_session_id) {
num_attr++;
if (attr->acct_multi_session_id_len != 16) {
wpa_printf(MSG_DEBUG,
"RADIUS DAS: Acct-Multi-Session-Id cannot match");
return NULL;
}
count = 0;
for (sta = hapd->sta_list; sta; sta = sta->next) {
if (!sta->radius_das_match)
continue;
if (!sta->eapol_sm ||
!sta->eapol_sm->acct_multi_session_id) {
sta->radius_das_match = 0;
continue;
}
os_snprintf(buf, sizeof(buf), "%016llX",
(unsigned long long)
sta->eapol_sm->acct_multi_session_id);
if (os_memcmp(attr->acct_multi_session_id, buf, 16) !=
0)
sta->radius_das_match = 0;
else
count++;
}
if (count == 0) {
wpa_printf(MSG_DEBUG,
"RADIUS DAS: No matches remaining after Acct-Multi-Session-Id check");
return NULL;
}
wpa_printf(MSG_DEBUG,
"RADIUS DAS: Acct-Multi-Session-Id match");
}
if (attr->cui) {
num_attr++;
count = 0;
for (sta = hapd->sta_list; sta; sta = sta->next) {
struct wpabuf *cui;
if (!sta->radius_das_match)
continue;
cui = ieee802_1x_get_radius_cui(sta->eapol_sm);
if (!cui || wpabuf_len(cui) != attr->cui_len ||
os_memcmp(wpabuf_head(cui), attr->cui,
attr->cui_len) != 0)
sta->radius_das_match = 0;
else
count++;
}
if (count == 0) {
wpa_printf(MSG_DEBUG,
"RADIUS DAS: No matches remaining after Chargeable-User-Identity check");
return NULL;
}
wpa_printf(MSG_DEBUG,
"RADIUS DAS: Chargeable-User-Identity match");
}
if (attr->user_name) {
num_attr++;
count = 0;
for (sta = hapd->sta_list; sta; sta = sta->next) {
u8 *identity;
size_t identity_len;
if (!sta->radius_das_match)
continue;
identity = ieee802_1x_get_identity(sta->eapol_sm,
&identity_len);
if (!identity ||
identity_len != attr->user_name_len ||
os_memcmp(identity, attr->user_name, identity_len)
!= 0)
sta->radius_das_match = 0;
else
count++;
}
if (count == 0) {
wpa_printf(MSG_DEBUG,
"RADIUS DAS: No matches remaining after User-Name check");
return NULL;
}
wpa_printf(MSG_DEBUG,
"RADIUS DAS: User-Name match");
}
if (num_attr == 0) {
/*
* In theory, we could match all current associations, but it
* seems safer to just reject requests that do not include any
* session identification attributes.
*/
wpa_printf(MSG_DEBUG,
"RADIUS DAS: No session identification attributes included");
return NULL;
}
selected = NULL;
for (sta = hapd->sta_list; sta; sta = sta->next) {
if (sta->radius_das_match) {
if (selected) {
*multi = 1;
return NULL;
}
selected = sta;
}
}
return selected;
}
static int hostapd_das_disconnect_pmksa(struct hostapd_data *hapd,
struct radius_das_attrs *attr)
{
if (!hapd->wpa_auth)
return -1;
return wpa_auth_radius_das_disconnect_pmksa(hapd->wpa_auth, attr);
}
static enum radius_das_res
hostapd_das_disconnect(void *ctx, struct radius_das_attrs *attr)
{
struct hostapd_data *hapd = ctx;
struct sta_info *sta;
int multi;
if (hostapd_das_nas_mismatch(hapd, attr))
return RADIUS_DAS_NAS_MISMATCH;
sta = hostapd_das_find_sta(hapd, attr, &multi);
if (sta == NULL) {
if (multi) {
wpa_printf(MSG_DEBUG,
"RADIUS DAS: Multiple sessions match - not supported");
return RADIUS_DAS_MULTI_SESSION_MATCH;
}
if (hostapd_das_disconnect_pmksa(hapd, attr) == 0) {
wpa_printf(MSG_DEBUG,
"RADIUS DAS: PMKSA cache entry matched");
return RADIUS_DAS_SUCCESS;
}
wpa_printf(MSG_DEBUG, "RADIUS DAS: No matching session found");
return RADIUS_DAS_SESSION_NOT_FOUND;
}
wpa_printf(MSG_DEBUG, "RADIUS DAS: Found a matching session " MACSTR
" - disconnecting", MAC2STR(sta->addr));
wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr);
hostapd_drv_sta_deauth(hapd, sta->addr,
WLAN_REASON_PREV_AUTH_NOT_VALID);
ap_sta_deauthenticate(hapd, sta, WLAN_REASON_PREV_AUTH_NOT_VALID);
return RADIUS_DAS_SUCCESS;
}
#endif /* CONFIG_NO_RADIUS */
/**
* hostapd_setup_bss - Per-BSS setup (initialization)
* @hapd: Pointer to BSS data
* @first: Whether this BSS is the first BSS of an interface; -1 = not first,
* but interface may exist
*
* This function is used to initialize all per-BSS data structures and
* resources. This gets called in a loop for each BSS when an interface is
* initialized. Most of the modules that are initialized here will be
* deinitialized in hostapd_cleanup().
*/
static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
{
struct hostapd_bss_config *conf = hapd->conf;
u8 ssid[SSID_MAX_LEN + 1];
int ssid_len, set_ssid;
char force_ifname[IFNAMSIZ];
u8 if_addr[ETH_ALEN];
int flush_old_stations = 1;
wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s), first=%d)",
__func__, hapd, conf->iface, first);
#ifdef EAP_SERVER_TNC
if (conf->tnc && tncs_global_init() < 0) {
wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
return -1;
}
#endif /* EAP_SERVER_TNC */
if (hapd->started) {
wpa_printf(MSG_ERROR, "%s: Interface %s was already started",
__func__, conf->iface);
return -1;
}
hapd->started = 1;
if (!first || first == -1) {
u8 *addr = hapd->own_addr;
if (!is_zero_ether_addr(conf->bssid)) {
/* Allocate the configured BSSID. */
os_memcpy(hapd->own_addr, conf->bssid, ETH_ALEN);
if (hostapd_mac_comp(hapd->own_addr,
hapd->iface->bss[0]->own_addr) ==
0) {
wpa_printf(MSG_ERROR, "BSS '%s' may not have "
"BSSID set to the MAC address of "
"the radio", conf->iface);
return -1;
}
} else if (hapd->iconf->use_driver_iface_addr) {
addr = NULL;
} else {
/* Allocate the next available BSSID. */
do {
inc_byte_array(hapd->own_addr, ETH_ALEN);
} while (mac_in_conf(hapd->iconf, hapd->own_addr));
}
hapd->interface_added = 1;
if (hostapd_if_add(hapd->iface->bss[0], WPA_IF_AP_BSS,
conf->iface, addr, hapd,
&hapd->drv_priv, force_ifname, if_addr,
conf->bridge[0] ? conf->bridge : NULL,
first == -1)) {
wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
MACSTR ")", MAC2STR(hapd->own_addr));
hapd->interface_added = 0;
return -1;
}
if (!addr)
os_memcpy(hapd->own_addr, if_addr, ETH_ALEN);
}
if (conf->wmm_enabled < 0)
conf->wmm_enabled = hapd->iconf->ieee80211n;
#ifdef CONFIG_IEEE80211R_AP
if (is_zero_ether_addr(conf->r1_key_holder))
os_memcpy(conf->r1_key_holder, hapd->own_addr, ETH_ALEN);
#endif /* CONFIG_IEEE80211R_AP */
#ifdef CONFIG_MESH
if ((hapd->conf->mesh & MESH_ENABLED) && hapd->iface->mconf == NULL)
flush_old_stations = 0;
#endif /* CONFIG_MESH */
if (flush_old_stations)
hostapd_flush_old_stations(hapd,
WLAN_REASON_PREV_AUTH_NOT_VALID);
hostapd_set_privacy(hapd, 0);
hostapd_broadcast_wep_clear(hapd);
if (hostapd_setup_encryption(conf->iface, hapd))
return -1;
/*
* Fetch the SSID from the system and use it or,
* if one was specified in the config file, verify they
* match.
*/
ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
if (ssid_len < 0) {
wpa_printf(MSG_ERROR, "Could not read SSID from system");
return -1;
}
if (conf->ssid.ssid_set) {
/*
* If SSID is specified in the config file and it differs
* from what is being used then force installation of the
* new SSID.
*/
set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
} else {
/*
* No SSID in the config file; just use the one we got
* from the system.
*/
set_ssid = 0;
conf->ssid.ssid_len = ssid_len;
os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
}
if (!hostapd_drv_none(hapd)) {
wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR
" and ssid \"%s\"",
conf->iface, MAC2STR(hapd->own_addr),
wpa_ssid_txt(conf->ssid.ssid, conf->ssid.ssid_len));
}
if (hostapd_setup_wpa_psk(conf)) {
wpa_printf(MSG_ERROR, "WPA-PSK setup failed.");
return -1;
}
/* Set SSID for the kernel driver (to be used in beacon and probe
* response frames) */
if (set_ssid && hostapd_set_ssid(hapd, conf->ssid.ssid,
conf->ssid.ssid_len)) {
wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
return -1;
}
if (wpa_debug_level <= MSG_MSGDUMP)
conf->radius->msg_dumps = 1;
#ifndef CONFIG_NO_RADIUS
hapd->radius = radius_client_init(hapd, conf->radius);
if (hapd->radius == NULL) {
wpa_printf(MSG_ERROR, "RADIUS client initialization failed.");
return -1;
}
if (conf->radius_das_port) {
struct radius_das_conf das_conf;
os_memset(&das_conf, 0, sizeof(das_conf));
das_conf.port = conf->radius_das_port;
das_conf.shared_secret = conf->radius_das_shared_secret;
das_conf.shared_secret_len =
conf->radius_das_shared_secret_len;
das_conf.client_addr = &conf->radius_das_client_addr;
das_conf.time_window = conf->radius_das_time_window;
das_conf.require_event_timestamp =
conf->radius_das_require_event_timestamp;
das_conf.require_message_authenticator =
conf->radius_das_require_message_authenticator;
das_conf.ctx = hapd;
das_conf.disconnect = hostapd_das_disconnect;
hapd->radius_das = radius_das_init(&das_conf);
if (hapd->radius_das == NULL) {
wpa_printf(MSG_ERROR, "RADIUS DAS initialization "
"failed.");
return -1;
}
}
#endif /* CONFIG_NO_RADIUS */
if (hostapd_acl_init(hapd)) {
wpa_printf(MSG_ERROR, "ACL initialization failed.");
return -1;
}
if (hostapd_init_wps(hapd, conf))
return -1;
#ifdef CONFIG_DPP
hapd->gas = gas_query_ap_init(hapd, hapd->msg_ctx);
if (!hapd->gas)
return -1;
if (hostapd_dpp_init(hapd))
return -1;
#endif /* CONFIG_DPP */
if (authsrv_init(hapd) < 0)
return -1;
if (ieee802_1x_init(hapd)) {
wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed.");
return -1;
}
if ((conf->wpa || conf->osen) && hostapd_setup_wpa(hapd))
return -1;
if (accounting_init(hapd)) {
wpa_printf(MSG_ERROR, "Accounting initialization failed.");
return -1;
}
if (conf->ieee802_11f &&
(hapd->iapp = iapp_init(hapd, conf->iapp_iface)) == NULL) {
wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization "
"failed.");
return -1;
}
#ifdef CONFIG_INTERWORKING
if (gas_serv_init(hapd)) {
wpa_printf(MSG_ERROR, "GAS server initialization failed");
return -1;
}
if (conf->qos_map_set_len &&
hostapd_drv_set_qos_map(hapd, conf->qos_map_set,
conf->qos_map_set_len)) {
wpa_printf(MSG_ERROR, "Failed to initialize QoS Map");
return -1;
}
#endif /* CONFIG_INTERWORKING */
if (conf->bss_load_update_period && bss_load_update_init(hapd)) {
wpa_printf(MSG_ERROR, "BSS Load initialization failed");
return -1;
}
if (conf->proxy_arp) {
if (x_snoop_init(hapd)) {
wpa_printf(MSG_ERROR,
"Generic snooping infrastructure initialization failed");
return -1;
}
if (dhcp_snoop_init(hapd)) {
wpa_printf(MSG_ERROR,
"DHCP snooping initialization failed");
return -1;
}
if (ndisc_snoop_init(hapd)) {
wpa_printf(MSG_ERROR,
"Neighbor Discovery snooping initialization failed");
return -1;
}
}
if (!hostapd_drv_none(hapd) && vlan_init(hapd)) {
wpa_printf(MSG_ERROR, "VLAN initialization failed.");
return -1;
}
if (!conf->start_disabled && ieee802_11_set_beacon(hapd) < 0)
return -1;
if (hapd->wpa_auth && wpa_init_keys(hapd->wpa_auth) < 0)
return -1;
if (hapd->driver && hapd->driver->set_operstate)
hapd->driver->set_operstate(hapd->drv_priv, 1);
return 0;
}
static void hostapd_tx_queue_params(struct hostapd_iface *iface)
{
struct hostapd_data *hapd = iface->bss[0];
int i;
struct hostapd_tx_queue_params *p;
#ifdef CONFIG_MESH
if ((hapd->conf->mesh & MESH_ENABLED) && iface->mconf == NULL)
return;
#endif /* CONFIG_MESH */
for (i = 0; i < NUM_TX_QUEUES; i++) {
p = &iface->conf->tx_queue[i];
if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin,
p->cwmax, p->burst)) {
wpa_printf(MSG_DEBUG, "Failed to set TX queue "
"parameters for queue %d.", i);
/* Continue anyway */
}
}
}
static int hostapd_set_acl_list(struct hostapd_data *hapd,
struct mac_acl_entry *mac_acl,
int n_entries, u8 accept_acl)
{
struct hostapd_acl_params *acl_params;
int i, err;
acl_params = os_zalloc(sizeof(*acl_params) +
(n_entries * sizeof(acl_params->mac_acl[0])));
if (!acl_params)
return -ENOMEM;
for (i = 0; i < n_entries; i++)
os_memcpy(acl_params->mac_acl[i].addr, mac_acl[i].addr,
ETH_ALEN);
acl_params->acl_policy = accept_acl;
acl_params->num_mac_acl = n_entries;
err = hostapd_drv_set_acl(hapd, acl_params);
os_free(acl_params);
return err;
}
static void hostapd_set_acl(struct hostapd_data *hapd)
{
struct hostapd_config *conf = hapd->iconf;
int err;
u8 accept_acl;
if (hapd->iface->drv_max_acl_mac_addrs == 0)
return;
if (conf->bss[0]->macaddr_acl == DENY_UNLESS_ACCEPTED) {
accept_acl = 1;
err = hostapd_set_acl_list(hapd, conf->bss[0]->accept_mac,
conf->bss[0]->num_accept_mac,
accept_acl);
if (err) {
wpa_printf(MSG_DEBUG, "Failed to set accept acl");
return;
}
} else if (conf->bss[0]->macaddr_acl == ACCEPT_UNLESS_DENIED) {
accept_acl = 0;
err = hostapd_set_acl_list(hapd, conf->bss[0]->deny_mac,
conf->bss[0]->num_deny_mac,
accept_acl);
if (err) {
wpa_printf(MSG_DEBUG, "Failed to set deny acl");
return;
}
}
}
static int start_ctrl_iface_bss(struct hostapd_data *hapd)
{
if (!hapd->iface->interfaces ||
!hapd->iface->interfaces->ctrl_iface_init)
return 0;
if (hapd->iface->interfaces->ctrl_iface_init(hapd)) {
wpa_printf(MSG_ERROR,
"Failed to setup control interface for %s",
hapd->conf->iface);
return -1;
}
return 0;
}
static int start_ctrl_iface(struct hostapd_iface *iface)
{
size_t i;
if (!iface->interfaces || !iface->interfaces->ctrl_iface_init)
return 0;
for (i = 0; i < iface->num_bss; i++) {
struct hostapd_data *hapd = iface->bss[i];
if (iface->interfaces->ctrl_iface_init(hapd)) {
wpa_printf(MSG_ERROR,
"Failed to setup control interface for %s",
hapd->conf->iface);
return -1;
}
}
return 0;
}
static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx)
{
struct hostapd_iface *iface = eloop_ctx;
if (!iface->wait_channel_update) {
wpa_printf(MSG_INFO, "Channel list update timeout, but interface was not waiting for it");
return;
}
/*
* It is possible that the existing channel list is acceptable, so try
* to proceed.
*/
wpa_printf(MSG_DEBUG, "Channel list update timeout - try to continue anyway");
setup_interface2(iface);
}
void hostapd_channel_list_updated(struct hostapd_iface *iface, int initiator)
{
if (!iface->wait_channel_update || initiator != REGDOM_SET_BY_USER)
return;
wpa_printf(MSG_DEBUG, "Channel list updated - continue setup");
eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
setup_interface2(iface);
}
static int setup_interface(struct hostapd_iface *iface)
{
struct hostapd_data *hapd = iface->bss[0];
size_t i;
/*
* It is possible that setup_interface() is called after the interface
* was disabled etc., in which case driver_ap_teardown is possibly set
* to 1. Clear it here so any other key/station deletion, which is not
* part of a teardown flow, would also call the relevant driver
* callbacks.
*/
iface->driver_ap_teardown = 0;
if (!iface->phy[0]) {
const char *phy = hostapd_drv_get_radio_name(hapd);
if (phy) {
wpa_printf(MSG_DEBUG, "phy: %s", phy);
os_strlcpy(iface->phy, phy, sizeof(iface->phy));
}
}
/*
* Make sure that all BSSes get configured with a pointer to the same
* driver interface.
*/
for (i = 1; i < iface->num_bss; i++) {
iface->bss[i]->driver = hapd->driver;
iface->bss[i]->drv_priv = hapd->drv_priv;
}
if (hostapd_validate_bssid_configuration(iface))
return -1;
/*
* Initialize control interfaces early to allow external monitoring of
* channel setup operations that may take considerable amount of time
* especially for DFS cases.
*/
if (start_ctrl_iface(iface))
return -1;
if (hapd->iconf->country[0] && hapd->iconf->country[1]) {
char country[4], previous_country[4];
hostapd_set_state(iface, HAPD_IFACE_COUNTRY_UPDATE);
if (hostapd_get_country(hapd, previous_country) < 0)
previous_country[0] = '\0';
os_memcpy(country, hapd->iconf->country, 3);
country[3] = '\0';
if (hostapd_set_country(hapd, country) < 0) {
wpa_printf(MSG_ERROR, "Failed to set country code");
return -1;
}
wpa_printf(MSG_DEBUG, "Previous country code %s, new country code %s",
previous_country, country);
if (os_strncmp(previous_country, country, 2) != 0) {
wpa_printf(MSG_DEBUG, "Continue interface setup after channel list update");
iface->wait_channel_update = 1;
eloop_register_timeout(5, 0,
channel_list_update_timeout,
iface, NULL);
return 0;
}
}
return setup_interface2(iface);
}
static int setup_interface2(struct hostapd_iface *iface)
{
iface->wait_channel_update = 0;
if (hostapd_get_hw_features(iface)) {
/* Not all drivers support this yet, so continue without hw
* feature data. */
} else {
int ret = hostapd_select_hw_mode(iface);
if (ret < 0) {
wpa_printf(MSG_ERROR, "Could not select hw_mode and "
"channel. (%d)", ret);
goto fail;
}
if (ret == 1) {
wpa_printf(MSG_DEBUG, "Interface initialization will be completed in a callback (ACS)");
return 0;
}
ret = hostapd_check_ht_capab(iface);
if (ret < 0)
goto fail;
if (ret == 1) {
wpa_printf(MSG_DEBUG, "Interface initialization will "
"be completed in a callback");
return 0;
}
if (iface->conf->ieee80211h)
wpa_printf(MSG_DEBUG, "DFS support is enabled");
}
return hostapd_setup_interface_complete(iface, 0);
fail:
hostapd_set_state(iface, HAPD_IFACE_DISABLED);
wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
if (iface->interfaces && iface->interfaces->terminate_on_error)
eloop_terminate();
return -1;
}
#ifdef CONFIG_FST
static const u8 * fst_hostapd_get_bssid_cb(void *ctx)
{
struct hostapd_data *hapd = ctx;
return hapd->own_addr;
}
static void fst_hostapd_get_channel_info_cb(void *ctx,
enum hostapd_hw_mode *hw_mode,
u8 *channel)
{
struct hostapd_data *hapd = ctx;
*hw_mode = ieee80211_freq_to_chan(hapd->iface->freq, channel);
}
static void fst_hostapd_set_ies_cb(void *ctx, const struct wpabuf *fst_ies)
{
struct hostapd_data *hapd = ctx;
if (hapd->iface->fst_ies != fst_ies) {
hapd->iface->fst_ies = fst_ies;
if (ieee802_11_set_beacon(hapd))
wpa_printf(MSG_WARNING, "FST: Cannot set beacon");
}
}
static int fst_hostapd_send_action_cb(void *ctx, const u8 *da,
struct wpabuf *buf)
{
struct hostapd_data *hapd = ctx;
return hostapd_drv_send_action(hapd, hapd->iface->freq, 0, da,
wpabuf_head(buf), wpabuf_len(buf));
}
static const struct wpabuf * fst_hostapd_get_mb_ie_cb(void *ctx, const u8 *addr)
{
struct hostapd_data *hapd = ctx;
struct sta_info *sta = ap_get_sta(hapd, addr);
return sta ? sta->mb_ies : NULL;
}
static void fst_hostapd_update_mb_ie_cb(void *ctx, const u8 *addr,
const u8 *buf, size_t size)
{
struct hostapd_data *hapd = ctx;
struct sta_info *sta = ap_get_sta(hapd, addr);
if (sta) {
struct mb_ies_info info;
if (!mb_ies_info_by_ies(&info, buf, size)) {
wpabuf_free(sta->mb_ies);
sta->mb_ies = mb_ies_by_info(&info);
}
}
}
static const u8 * fst_hostapd_get_sta(struct fst_get_peer_ctx **get_ctx,
Boolean mb_only)
{
struct sta_info *s = (struct sta_info *) *get_ctx;
if (mb_only) {
for (; s && !s->mb_ies; s = s->next)
;
}
if (s) {
*get_ctx = (struct fst_get_peer_ctx *) s->next;
return s->addr;
}
*get_ctx = NULL;
return NULL;
}
static const u8 * fst_hostapd_get_peer_first(void *ctx,
struct fst_get_peer_ctx **get_ctx,
Boolean mb_only)
{
struct hostapd_data *hapd = ctx;
*get_ctx = (struct fst_get_peer_ctx *) hapd->sta_list;
return fst_hostapd_get_sta(get_ctx, mb_only);
}
static const u8 * fst_hostapd_get_peer_next(void *ctx,
struct fst_get_peer_ctx **get_ctx,
Boolean mb_only)
{
return fst_hostapd_get_sta(get_ctx, mb_only);
}
void fst_hostapd_fill_iface_obj(struct hostapd_data *hapd,
struct fst_wpa_obj *iface_obj)
{
iface_obj->ctx = hapd;
iface_obj->get_bssid = fst_hostapd_get_bssid_cb;
iface_obj->get_channel_info = fst_hostapd_get_channel_info_cb;
iface_obj->set_ies = fst_hostapd_set_ies_cb;
iface_obj->send_action = fst_hostapd_send_action_cb;
iface_obj->get_mb_ie = fst_hostapd_get_mb_ie_cb;
iface_obj->update_mb_ie = fst_hostapd_update_mb_ie_cb;
iface_obj->get_peer_first = fst_hostapd_get_peer_first;
iface_obj->get_peer_next = fst_hostapd_get_peer_next;
}
#endif /* CONFIG_FST */
#ifdef NEED_AP_MLME
static enum nr_chan_width hostapd_get_nr_chan_width(struct hostapd_data *hapd,
int ht, int vht)
{
if (!ht && !vht)
return NR_CHAN_WIDTH_20;
if (!hapd->iconf->secondary_channel)
return NR_CHAN_WIDTH_20;
if (!vht || hapd->iconf->vht_oper_chwidth == VHT_CHANWIDTH_USE_HT)
return NR_CHAN_WIDTH_40;
if (hapd->iconf->vht_oper_chwidth == VHT_CHANWIDTH_80MHZ)
return NR_CHAN_WIDTH_80;
if (hapd->iconf->vht_oper_chwidth == VHT_CHANWIDTH_160MHZ)
return NR_CHAN_WIDTH_160;
if (hapd->iconf->vht_oper_chwidth == VHT_CHANWIDTH_80P80MHZ)
return NR_CHAN_WIDTH_80P80;
return NR_CHAN_WIDTH_20;
}
#endif /* NEED_AP_MLME */
static void hostapd_set_own_neighbor_report(struct hostapd_data *hapd)
{
#ifdef NEED_AP_MLME
u16 capab = hostapd_own_capab_info(hapd);
int ht = hapd->iconf->ieee80211n && !hapd->conf->disable_11n;
int vht = hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac;
struct wpa_ssid_value ssid;
u8 channel, op_class;
u8 center_freq1_idx = 0, center_freq2_idx = 0;
enum nr_chan_width width;
u32 bssid_info;
struct wpabuf *nr;
if (!(hapd->conf->radio_measurements[0] &
WLAN_RRM_CAPS_NEIGHBOR_REPORT))
return;
bssid_info = 3; /* AP is reachable */
bssid_info |= NEI_REP_BSSID_INFO_SECURITY; /* "same as the AP" */
bssid_info |= NEI_REP_BSSID_INFO_KEY_SCOPE; /* "same as the AP" */
if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT)
bssid_info |= NEI_REP_BSSID_INFO_SPECTRUM_MGMT;
bssid_info |= NEI_REP_BSSID_INFO_RM; /* RRM is supported */
if (hapd->conf->wmm_enabled) {
bssid_info |= NEI_REP_BSSID_INFO_QOS;
if (hapd->conf->wmm_uapsd &&
(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_UAPSD))
bssid_info |= NEI_REP_BSSID_INFO_APSD;
}
if (ht) {
bssid_info |= NEI_REP_BSSID_INFO_HT |
NEI_REP_BSSID_INFO_DELAYED_BA;
/* VHT bit added in IEEE P802.11-REVmc/D4.3 */
if (vht)
bssid_info |= NEI_REP_BSSID_INFO_VHT;
}
/* TODO: Set NEI_REP_BSSID_INFO_MOBILITY_DOMAIN if MDE is set */
if (ieee80211_freq_to_channel_ext(hapd->iface->freq,
hapd->iconf->secondary_channel,
hapd->iconf->vht_oper_chwidth,
&op_class, &channel) ==
NUM_HOSTAPD_MODES)
return;
width = hostapd_get_nr_chan_width(hapd, ht, vht);
if (vht) {
center_freq1_idx = hapd->iconf->vht_oper_centr_freq_seg0_idx;
if (width == NR_CHAN_WIDTH_80P80)
center_freq2_idx =
hapd->iconf->vht_oper_centr_freq_seg1_idx;
} else if (ht) {
ieee80211_freq_to_chan(hapd->iface->freq +
10 * hapd->iconf->secondary_channel,
&center_freq1_idx);
}
ssid.ssid_len = hapd->conf->ssid.ssid_len;
os_memcpy(ssid.ssid, hapd->conf->ssid.ssid, ssid.ssid_len);
/*
* Neighbor Report element size = BSSID + BSSID info + op_class + chan +
* phy type + wide bandwidth channel subelement.
*/
nr = wpabuf_alloc(ETH_ALEN + 4 + 1 + 1 + 1 + 5);
if (!nr)
return;
wpabuf_put_data(nr, hapd->own_addr, ETH_ALEN);
wpabuf_put_le32(nr, bssid_info);
wpabuf_put_u8(nr, op_class);
wpabuf_put_u8(nr, channel);
wpabuf_put_u8(nr, ieee80211_get_phy_type(hapd->iface->freq, ht, vht));
/*
* Wide Bandwidth Channel subelement may be needed to allow the
* receiving STA to send packets to the AP. See IEEE P802.11-REVmc/D5.0
* Figure 9-301.
*/
wpabuf_put_u8(nr, WNM_NEIGHBOR_WIDE_BW_CHAN);
wpabuf_put_u8(nr, 3);
wpabuf_put_u8(nr, width);
wpabuf_put_u8(nr, center_freq1_idx);
wpabuf_put_u8(nr, center_freq2_idx);
hostapd_neighbor_set(hapd, hapd->own_addr, &ssid, nr, hapd->iconf->lci,
hapd->iconf->civic, hapd->iconf->stationary_ap);
wpabuf_free(nr);
#endif /* NEED_AP_MLME */
}
#ifdef CONFIG_OWE
static int hostapd_owe_iface_iter(struct hostapd_iface *iface, void *ctx)
{
struct hostapd_data *hapd = ctx;
size_t i;
for (i = 0; i < iface->num_bss; i++) {
struct hostapd_data *bss = iface->bss[i];
if (os_strcmp(hapd->conf->owe_transition_ifname,
bss->conf->iface) != 0)
continue;
wpa_printf(MSG_DEBUG,
"OWE: ifname=%s found transition mode ifname=%s BSSID "
MACSTR " SSID %s",
hapd->conf->iface, bss->conf->iface,
MAC2STR(bss->own_addr),
wpa_ssid_txt(bss->conf->ssid.ssid,
bss->conf->ssid.ssid_len));
if (!bss->conf->ssid.ssid_set || !bss->conf->ssid.ssid_len ||
is_zero_ether_addr(bss->own_addr))
continue;
os_memcpy(hapd->conf->owe_transition_bssid, bss->own_addr,
ETH_ALEN);
os_memcpy(hapd->conf->owe_transition_ssid,
bss->conf->ssid.ssid, bss->conf->ssid.ssid_len);
hapd->conf->owe_transition_ssid_len = bss->conf->ssid.ssid_len;
wpa_printf(MSG_DEBUG,
"OWE: Copied transition mode information");
return 1;
}
return 0;
}
int hostapd_owe_trans_get_info(struct hostapd_data *hapd)
{
if (hapd->conf->owe_transition_ssid_len > 0 &&
!is_zero_ether_addr(hapd->conf->owe_transition_bssid))
return 0;
/* Find transition mode SSID/BSSID information from a BSS operated by
* this hostapd instance. */
if (!hapd->iface->interfaces ||
!hapd->iface->interfaces->for_each_interface)
return hostapd_owe_iface_iter(hapd->iface, hapd);
else
return hapd->iface->interfaces->for_each_interface(
hapd->iface->interfaces, hostapd_owe_iface_iter, hapd);
}
static int hostapd_owe_iface_iter2(struct hostapd_iface *iface, void *ctx)
{
size_t i;
for (i = 0; i < iface->num_bss; i++) {
struct hostapd_data *bss = iface->bss[i];
int res;
if (!bss->conf->owe_transition_ifname[0])
continue;
res = hostapd_owe_trans_get_info(bss);
if (res == 0)
continue;
wpa_printf(MSG_DEBUG,
"OWE: Matching transition mode interface enabled - update beacon data for %s",
bss->conf->iface);
ieee802_11_set_beacon(bss);
}
return 0;
}
#endif /* CONFIG_OWE */
static void hostapd_owe_update_trans(struct hostapd_iface *iface)
{
#ifdef CONFIG_OWE
/* Check whether the enabled BSS can complete OWE transition mode
* configuration for any pending interface. */
if (!iface->interfaces ||
!iface->interfaces->for_each_interface)
hostapd_owe_iface_iter2(iface, NULL);
else
iface->interfaces->for_each_interface(
iface->interfaces, hostapd_owe_iface_iter2, NULL);
#endif /* CONFIG_OWE */
}
static int hostapd_setup_interface_complete_sync(struct hostapd_iface *iface,
int err)
{
struct hostapd_data *hapd = iface->bss[0];
size_t j;
u8 *prev_addr;
int delay_apply_cfg = 0;
int res_dfs_offload = 0;
if (err)
goto fail;
wpa_printf(MSG_DEBUG, "Completing interface initialization");
if (iface->conf->channel) {
#ifdef NEED_AP_MLME
int res;
#endif /* NEED_AP_MLME */
iface->freq = hostapd_hw_get_freq(hapd, iface->conf->channel);
wpa_printf(MSG_DEBUG, "Mode: %s Channel: %d "
"Frequency: %d MHz",
hostapd_hw_mode_txt(iface->conf->hw_mode),
iface->conf->channel, iface->freq);
#ifdef NEED_AP_MLME
/* Handle DFS only if it is not offloaded to the driver */
if (!(iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD)) {
/* Check DFS */
res = hostapd_handle_dfs(iface);
if (res <= 0) {
if (res < 0)
goto fail;
return res;
}
} else {
/* If DFS is offloaded to the driver */
res_dfs_offload = hostapd_handle_dfs_offload(iface);
if (res_dfs_offload <= 0) {
if (res_dfs_offload < 0)
goto fail;
} else {
wpa_printf(MSG_DEBUG,
"Proceed with AP/channel setup");
/*
* If this is a DFS channel, move to completing
* AP setup.
*/
if (res_dfs_offload == 1)
goto dfs_offload;
/* Otherwise fall through. */
}
}
#endif /* NEED_AP_MLME */
#ifdef CONFIG_MESH
if (iface->mconf != NULL) {
wpa_printf(MSG_DEBUG,
"%s: Mesh configuration will be applied while joining the mesh network",
iface->bss[0]->conf->iface);
delay_apply_cfg = 1;
}
#endif /* CONFIG_MESH */
if (!delay_apply_cfg &&
hostapd_set_freq(hapd, hapd->iconf->hw_mode, iface->freq,
hapd->iconf->channel,
hapd->iconf->ieee80211n,
hapd->iconf->ieee80211ac,
hapd->iconf->secondary_channel,
hapd->iconf->vht_oper_chwidth,
hapd->iconf->vht_oper_centr_freq_seg0_idx,
hapd->iconf->vht_oper_centr_freq_seg1_idx)) {
wpa_printf(MSG_ERROR, "Could not set channel for "
"kernel driver");
goto fail;
}
}
if (iface->current_mode) {
if (hostapd_prepare_rates(iface, iface->current_mode)) {
wpa_printf(MSG_ERROR, "Failed to prepare rates "
"table.");
hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_WARNING,
"Failed to prepare rates table.");
goto fail;
}
}
if (hapd->iconf->rts_threshold > -1 &&
hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) {
wpa_printf(MSG_ERROR, "Could not set RTS threshold for "
"kernel driver");
goto fail;
}
if (hapd->iconf->fragm_threshold > -1 &&
hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) {
wpa_printf(MSG_ERROR, "Could not set fragmentation threshold "
"for kernel driver");
goto fail;
}
prev_addr = hapd->own_addr;
for (j = 0; j < iface->num_bss; j++) {
hapd = iface->bss[j];
if (j)
os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
if (hostapd_setup_bss(hapd, j == 0)) {
do {
hapd = iface->bss[j];
hostapd_bss_deinit_no_free(hapd);
hostapd_free_hapd_data(hapd);
} while (j-- > 0);
goto fail;
}
if (is_zero_ether_addr(hapd->conf->bssid))
prev_addr = hapd->own_addr;
}
hapd = iface->bss[0];
hostapd_tx_queue_params(iface);
ap_list_init(iface);
hostapd_set_acl(hapd);
if (hostapd_driver_commit(hapd) < 0) {
wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
"configuration", __func__);
goto fail;
}
/*
* WPS UPnP module can be initialized only when the "upnp_iface" is up.
* If "interface" and "upnp_iface" are the same (e.g., non-bridge
* mode), the interface is up only after driver_commit, so initialize
* WPS after driver_commit.
*/
for (j = 0; j < iface->num_bss; j++) {
if (hostapd_init_wps_complete(iface->bss[j]))
goto fail;
}
if ((iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
!res_dfs_offload) {
/*
* If freq is DFS, and DFS is offloaded to the driver, then wait
* for CAC to complete.
*/
wpa_printf(MSG_DEBUG, "%s: Wait for CAC to complete", __func__);
return res_dfs_offload;
}
#ifdef NEED_AP_MLME
dfs_offload:
#endif /* NEED_AP_MLME */
#ifdef CONFIG_FST
if (hapd->iconf->fst_cfg.group_id[0]) {
struct fst_wpa_obj iface_obj;
fst_hostapd_fill_iface_obj(hapd, &iface_obj);
iface->fst = fst_attach(hapd->conf->iface, hapd->own_addr,
&iface_obj, &hapd->iconf->fst_cfg);
if (!iface->fst) {
wpa_printf(MSG_ERROR, "Could not attach to FST %s",
hapd->iconf->fst_cfg.group_id);
goto fail;
}
}
#endif /* CONFIG_FST */
hostapd_set_state(iface, HAPD_IFACE_ENABLED);
hostapd_owe_update_trans(iface);
wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_ENABLED);
if (hapd->setup_complete_cb)
hapd->setup_complete_cb(hapd->setup_complete_cb_ctx);
wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
iface->bss[0]->conf->iface);
if (iface->interfaces && iface->interfaces->terminate_on_error > 0)
iface->interfaces->terminate_on_error--;
for (j = 0; j < iface->num_bss; j++)
hostapd_set_own_neighbor_report(iface->bss[j]);
return 0;
fail:
wpa_printf(MSG_ERROR, "Interface initialization failed");
hostapd_set_state(iface, HAPD_IFACE_DISABLED);
wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
#ifdef CONFIG_FST
if (iface->fst) {
fst_detach(iface->fst);
iface->fst = NULL;
}
#endif /* CONFIG_FST */
if (iface->interfaces && iface->interfaces->terminate_on_error)
eloop_terminate();
return -1;
}
/**
* hostapd_setup_interface_complete - Complete interface setup
*
* This function is called when previous steps in the interface setup has been
* completed. This can also start operations, e.g., DFS, that will require
* additional processing before interface is ready to be enabled. Such
* operations will call this function from eloop callbacks when finished.
*/
int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err)
{
struct hapd_interfaces *interfaces = iface->interfaces;
struct hostapd_data *hapd = iface->bss[0];
unsigned int i;
int not_ready_in_sync_ifaces = 0;
if (!iface->need_to_start_in_sync)
return hostapd_setup_interface_complete_sync(iface, err);
if (err) {
wpa_printf(MSG_ERROR, "Interface initialization failed");
hostapd_set_state(iface, HAPD_IFACE_DISABLED);
iface->need_to_start_in_sync = 0;
wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
if (interfaces && interfaces->terminate_on_error)
eloop_terminate();
return -1;
}
if (iface->ready_to_start_in_sync) {
/* Already in ready and waiting. should never happpen */
return 0;
}
for (i = 0; i < interfaces->count; i++) {
if (interfaces->iface[i]->need_to_start_in_sync &&
!interfaces->iface[i]->ready_to_start_in_sync)
not_ready_in_sync_ifaces++;
}
/*
* Check if this is the last interface, if yes then start all the other
* waiting interfaces. If not, add this interface to the waiting list.
*/
if (not_ready_in_sync_ifaces > 1 && iface->state == HAPD_IFACE_DFS) {
/*
* If this interface went through CAC, do not synchronize, just
* start immediately.
*/
iface->need_to_start_in_sync = 0;
wpa_printf(MSG_INFO,
"%s: Finished CAC - bypass sync and start interface",
iface->bss[0]->conf->iface);
return hostapd_setup_interface_complete_sync(iface, err);
}
if (not_ready_in_sync_ifaces > 1) {
/* need to wait as there are other interfaces still coming up */
iface->ready_to_start_in_sync = 1;
wpa_printf(MSG_INFO,
"%s: Interface waiting to sync with other interfaces",
iface->bss[0]->conf->iface);
return 0;
}
wpa_printf(MSG_INFO,
"%s: Last interface to sync - starting all interfaces",
iface->bss[0]->conf->iface);
iface->need_to_start_in_sync = 0;
hostapd_setup_interface_complete_sync(iface, err);
for (i = 0; i < interfaces->count; i++) {
if (interfaces->iface[i]->need_to_start_in_sync &&
interfaces->iface[i]->ready_to_start_in_sync) {
hostapd_setup_interface_complete_sync(
interfaces->iface[i], 0);
/* Only once the interfaces are sync started */
interfaces->iface[i]->need_to_start_in_sync = 0;
}
}
return 0;
}
/**
* hostapd_setup_interface - Setup of an interface
* @iface: Pointer to interface data.
* Returns: 0 on success, -1 on failure
*
* Initializes the driver interface, validates the configuration,
* and sets driver parameters based on the configuration.
* Flushes old stations, sets the channel, encryption,
* beacons, and WDS links based on the configuration.
*
* If interface setup requires more time, e.g., to perform HT co-ex scans, ACS,
* or DFS operations, this function returns 0 before such operations have been
* completed. The pending operations are registered into eloop and will be
* completed from eloop callbacks. Those callbacks end up calling
* hostapd_setup_interface_complete() once setup has been completed.
*/
int hostapd_setup_interface(struct hostapd_iface *iface)
{
int ret;
ret = setup_interface(iface);
if (ret) {
wpa_printf(MSG_ERROR, "%s: Unable to setup interface.",
iface->bss[0]->conf->iface);
return -1;
}
return 0;
}
/**
* hostapd_alloc_bss_data - Allocate and initialize per-BSS data
* @hapd_iface: Pointer to interface data
* @conf: Pointer to per-interface configuration
* @bss: Pointer to per-BSS configuration for this BSS
* Returns: Pointer to allocated BSS data
*
* This function is used to allocate per-BSS data structure. This data will be
* freed after hostapd_cleanup() is called for it during interface
* deinitialization.
*/
struct hostapd_data *
hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
struct hostapd_config *conf,
struct hostapd_bss_config *bss)
{
struct hostapd_data *hapd;
hapd = os_zalloc(sizeof(*hapd));
if (hapd == NULL)
return NULL;
hapd->new_assoc_sta_cb = hostapd_new_assoc_sta;
hapd->iconf = conf;
hapd->conf = bss;
hapd->iface = hapd_iface;
if (conf)
hapd->driver = conf->driver;
hapd->ctrl_sock = -1;
dl_list_init(&hapd->ctrl_dst);
dl_list_init(&hapd->nr_db);
hapd->dhcp_sock = -1;
#ifdef CONFIG_IEEE80211R_AP
dl_list_init(&hapd->l2_queue);
dl_list_init(&hapd->l2_oui_queue);
#endif /* CONFIG_IEEE80211R_AP */
return hapd;
}
static void hostapd_bss_deinit(struct hostapd_data *hapd)
{
if (!hapd)
return;
wpa_printf(MSG_DEBUG, "%s: deinit bss %s", __func__,
hapd->conf->iface);
hostapd_bss_deinit_no_free(hapd);
wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
hostapd_cleanup(hapd);
}
void hostapd_interface_deinit(struct hostapd_iface *iface)
{
int j;
wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
if (iface == NULL)
return;
hostapd_set_state(iface, HAPD_IFACE_DISABLED);
#ifdef CONFIG_IEEE80211N
#ifdef NEED_AP_MLME
hostapd_stop_setup_timers(iface);
eloop_cancel_timeout(ap_ht2040_timeout, iface, NULL);
#endif /* NEED_AP_MLME */
#endif /* CONFIG_IEEE80211N */
eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
iface->wait_channel_update = 0;
#ifdef CONFIG_FST
if (iface->fst) {
fst_detach(iface->fst);
iface->fst = NULL;
}
#endif /* CONFIG_FST */
for (j = iface->num_bss - 1; j >= 0; j--) {
if (!iface->bss)
break;
hostapd_bss_deinit(iface->bss[j]);
}
}
void hostapd_interface_free(struct hostapd_iface *iface)
{
size_t j;
wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
for (j = 0; j < iface->num_bss; j++) {
if (!iface->bss)
break;
wpa_printf(MSG_DEBUG, "%s: free hapd %p",
__func__, iface->bss[j]);
os_free(iface->bss[j]);
}
hostapd_cleanup_iface(iface);
}
struct hostapd_iface * hostapd_alloc_iface(void)
{
struct hostapd_iface *hapd_iface;
hapd_iface = os_zalloc(sizeof(*hapd_iface));
if (!hapd_iface)
return NULL;
dl_list_init(&hapd_iface->sta_seen);
return hapd_iface;
}
/**
* hostapd_init - Allocate and initialize per-interface data
* @config_file: Path to the configuration file
* Returns: Pointer to the allocated interface data or %NULL on failure
*
* This function is used to allocate main data structures for per-interface
* data. The allocated data buffer will be freed by calling
* hostapd_cleanup_iface().
*/
struct hostapd_iface * hostapd_init(struct hapd_interfaces *interfaces,
const char *config_file)
{
struct hostapd_iface *hapd_iface = NULL;
struct hostapd_config *conf = NULL;
struct hostapd_data *hapd;
size_t i;
hapd_iface = hostapd_alloc_iface();
if (hapd_iface == NULL)
goto fail;
hapd_iface->config_fname = os_strdup(config_file);
if (hapd_iface->config_fname == NULL)
goto fail;
conf = interfaces->config_read_cb(hapd_iface->config_fname);
if (conf == NULL)
goto fail;
hapd_iface->conf = conf;
hapd_iface->num_bss = conf->num_bss;
hapd_iface->bss = os_calloc(conf->num_bss,
sizeof(struct hostapd_data *));
if (hapd_iface->bss == NULL)
goto fail;
for (i = 0; i < conf->num_bss; i++) {
hapd = hapd_iface->bss[i] =
hostapd_alloc_bss_data(hapd_iface, conf,
conf->bss[i]);
if (hapd == NULL)
goto fail;
hapd->msg_ctx = hapd;
}
return hapd_iface;
fail:
wpa_printf(MSG_ERROR, "Failed to set up interface with %s",
config_file);
if (conf)
hostapd_config_free(conf);
if (hapd_iface) {
os_free(hapd_iface->config_fname);
os_free(hapd_iface->bss);
wpa_printf(MSG_DEBUG, "%s: free iface %p",
__func__, hapd_iface);
os_free(hapd_iface);
}
return NULL;
}
static int ifname_in_use(struct hapd_interfaces *interfaces, const char *ifname)
{
size_t i, j;
for (i = 0; i < interfaces->count; i++) {
struct hostapd_iface *iface = interfaces->iface[i];
for (j = 0; j < iface->num_bss; j++) {
struct hostapd_data *hapd = iface->bss[j];
if (os_strcmp(ifname, hapd->conf->iface) == 0)
return 1;
}
}
return 0;
}
/**
* hostapd_interface_init_bss - Read configuration file and init BSS data
*
* This function is used to parse configuration file for a BSS. This BSS is
* added to an existing interface sharing the same radio (if any) or a new
* interface is created if this is the first interface on a radio. This
* allocate memory for the BSS. No actual driver operations are started.
*
* This is similar to hostapd_interface_init(), but for a case where the
* configuration is used to add a single BSS instead of all BSSes for a radio.
*/
struct hostapd_iface *
hostapd_interface_init_bss(struct hapd_interfaces *interfaces, const char *phy,
const char *config_fname, int debug)
{
struct hostapd_iface *new_iface = NULL, *iface = NULL;
struct hostapd_data *hapd;
int k;
size_t i, bss_idx;
if (!phy || !*phy)
return NULL;
for (i = 0; i < interfaces->count; i++) {
if (os_strcmp(interfaces->iface[i]->phy, phy) == 0) {
iface = interfaces->iface[i];
break;
}
}
wpa_printf(MSG_INFO, "Configuration file: %s (phy %s)%s",
config_fname, phy, iface ? "" : " --> new PHY");
if (iface) {
struct hostapd_config *conf;
struct hostapd_bss_config **tmp_conf;
struct hostapd_data **tmp_bss;
struct hostapd_bss_config *bss;
const char *ifname;
/* Add new BSS to existing iface */
conf = interfaces->config_read_cb(config_fname);
if (conf == NULL)
return NULL;
if (conf->num_bss > 1) {
wpa_printf(MSG_ERROR, "Multiple BSSes specified in BSS-config");
hostapd_config_free(conf);
return NULL;
}
ifname = conf->bss[0]->iface;
if (ifname[0] != '\0' && ifname_in_use(interfaces, ifname)) {
wpa_printf(MSG_ERROR,
"Interface name %s already in use", ifname);
hostapd_config_free(conf);
return NULL;
}
tmp_conf = os_realloc_array(
iface->conf->bss, iface->conf->num_bss + 1,
sizeof(struct hostapd_bss_config *));
tmp_bss = os_realloc_array(iface->bss, iface->num_bss + 1,
sizeof(struct hostapd_data *));
if (tmp_bss)
iface->bss = tmp_bss;
if (tmp_conf) {
iface->conf->bss = tmp_conf;
iface->conf->last_bss = tmp_conf[0];
}
if (tmp_bss == NULL || tmp_conf == NULL) {
hostapd_config_free(conf);
return NULL;
}
bss = iface->conf->bss[iface->conf->num_bss] = conf->bss[0];
iface->conf->num_bss++;
hapd = hostapd_alloc_bss_data(iface, iface->conf, bss);
if (hapd == NULL) {
iface->conf->num_bss--;
hostapd_config_free(conf);
return NULL;
}
iface->conf->last_bss = bss;
iface->bss[iface->num_bss] = hapd;
hapd->msg_ctx = hapd;
bss_idx = iface->num_bss++;
conf->num_bss--;
conf->bss[0] = NULL;
hostapd_config_free(conf);
} else {
/* Add a new iface with the first BSS */
new_iface = iface = hostapd_init(interfaces, config_fname);
if (!iface)
return NULL;
os_strlcpy(iface->phy, phy, sizeof(iface->phy));
iface->interfaces = interfaces;
bss_idx = 0;
}
for (k = 0; k < debug; k++) {
if (iface->bss[bss_idx]->conf->logger_stdout_level > 0)
iface->bss[bss_idx]->conf->logger_stdout_level--;
}
if (iface->conf->bss[bss_idx]->iface[0] == '\0' &&
!hostapd_drv_none(iface->bss[bss_idx])) {
wpa_printf(MSG_ERROR, "Interface name not specified in %s",
config_fname);
if (new_iface)
hostapd_interface_deinit_free(new_iface);
return NULL;
}
return iface;
}
void hostapd_interface_deinit_free(struct hostapd_iface *iface)
{
const struct wpa_driver_ops *driver;
void *drv_priv;
wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
if (iface == NULL)
return;
wpa_printf(MSG_DEBUG, "%s: num_bss=%u conf->num_bss=%u",
__func__, (unsigned int) iface->num_bss,
(unsigned int) iface->conf->num_bss);
driver = iface->bss[0]->driver;
drv_priv = iface->bss[0]->drv_priv;
hostapd_interface_deinit(iface);
wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
__func__, driver, drv_priv);
if (driver && driver->hapd_deinit && drv_priv) {
driver->hapd_deinit(drv_priv);
iface->bss[0]->drv_priv = NULL;
}
hostapd_interface_free(iface);
}
static void hostapd_deinit_driver(const struct wpa_driver_ops *driver,
void *drv_priv,
struct hostapd_iface *hapd_iface)
{
size_t j;
wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
__func__, driver, drv_priv);
if (driver && driver->hapd_deinit && drv_priv) {
driver->hapd_deinit(drv_priv);
for (j = 0; j < hapd_iface->num_bss; j++) {
wpa_printf(MSG_DEBUG, "%s:bss[%d]->drv_priv=%p",
__func__, (int) j,
hapd_iface->bss[j]->drv_priv);
if (hapd_iface->bss[j]->drv_priv == drv_priv)
hapd_iface->bss[j]->drv_priv = NULL;
}
}
}
int hostapd_enable_iface(struct hostapd_iface *hapd_iface)
{
size_t j;
if (hapd_iface->bss[0]->drv_priv != NULL) {
wpa_printf(MSG_ERROR, "Interface %s already enabled",
hapd_iface->conf->bss[0]->iface);
return -1;
}
wpa_printf(MSG_DEBUG, "Enable interface %s",
hapd_iface->conf->bss[0]->iface);
for (j = 0; j < hapd_iface->num_bss; j++)
hostapd_set_security_params(hapd_iface->conf->bss[j], 1);
if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
wpa_printf(MSG_INFO, "Invalid configuration - cannot enable");
return -1;
}
if (hapd_iface->interfaces == NULL ||
hapd_iface->interfaces->driver_init == NULL ||
hapd_iface->interfaces->driver_init(hapd_iface))
return -1;
if (hostapd_setup_interface(hapd_iface)) {
hostapd_deinit_driver(hapd_iface->bss[0]->driver,
hapd_iface->bss[0]->drv_priv,
hapd_iface);
return -1;
}
return 0;
}
int hostapd_reload_iface(struct hostapd_iface *hapd_iface)
{
size_t j;
wpa_printf(MSG_DEBUG, "Reload interface %s",
hapd_iface->conf->bss[0]->iface);
for (j = 0; j < hapd_iface->num_bss; j++)
hostapd_set_security_params(hapd_iface->conf->bss[j], 1);
if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
wpa_printf(MSG_ERROR, "Updated configuration is invalid");
return -1;
}
hostapd_clear_old(hapd_iface);
for (j = 0; j < hapd_iface->num_bss; j++)
hostapd_reload_bss(hapd_iface->bss[j]);
return 0;
}
int hostapd_disable_iface(struct hostapd_iface *hapd_iface)
{
size_t j;
const struct wpa_driver_ops *driver;
void *drv_priv;
if (hapd_iface == NULL)
return -1;
if (hapd_iface->bss[0]->drv_priv == NULL) {
wpa_printf(MSG_INFO, "Interface %s already disabled",
hapd_iface->conf->bss[0]->iface);
return -1;
}
wpa_msg(hapd_iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
driver = hapd_iface->bss[0]->driver;
drv_priv = hapd_iface->bss[0]->drv_priv;
hapd_iface->driver_ap_teardown =
!!(hapd_iface->drv_flags &
WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
/* same as hostapd_interface_deinit without deinitializing ctrl-iface */
for (j = 0; j < hapd_iface->num_bss; j++) {
struct hostapd_data *hapd = hapd_iface->bss[j];
hostapd_bss_deinit_no_free(hapd);
hostapd_free_hapd_data(hapd);
}
hostapd_deinit_driver(driver, drv_priv, hapd_iface);
/* From hostapd_cleanup_iface: These were initialized in
* hostapd_setup_interface and hostapd_setup_interface_complete
*/
hostapd_cleanup_iface_partial(hapd_iface);
wpa_printf(MSG_DEBUG, "Interface %s disabled",
hapd_iface->bss[0]->conf->iface);
hostapd_set_state(hapd_iface, HAPD_IFACE_DISABLED);
return 0;
}
static struct hostapd_iface *
hostapd_iface_alloc(struct hapd_interfaces *interfaces)
{
struct hostapd_iface **iface, *hapd_iface;
iface = os_realloc_array(interfaces->iface, interfaces->count + 1,
sizeof(struct hostapd_iface *));
if (iface == NULL)
return NULL;
interfaces->iface = iface;
hapd_iface = interfaces->iface[interfaces->count] =
hostapd_alloc_iface();
if (hapd_iface == NULL) {
wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
"the interface", __func__);
return NULL;
}
interfaces->count++;
hapd_iface->interfaces = interfaces;
return hapd_iface;
}
static struct hostapd_config *
hostapd_config_alloc(struct hapd_interfaces *interfaces, const char *ifname,
const char *ctrl_iface, const char *driver)
{
struct hostapd_bss_config *bss;
struct hostapd_config *conf;
/* Allocates memory for bss and conf */
conf = hostapd_config_defaults();
if (conf == NULL) {
wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
"configuration", __func__);
return NULL;
}
if (driver) {
int j;
for (j = 0; wpa_drivers[j]; j++) {
if (os_strcmp(driver, wpa_drivers[j]->name) == 0) {
conf->driver = wpa_drivers[j];
goto skip;
}
}
wpa_printf(MSG_ERROR,
"Invalid/unknown driver '%s' - registering the default driver",
driver);
}
conf->driver = wpa_drivers[0];
if (conf->driver == NULL) {
wpa_printf(MSG_ERROR, "No driver wrappers registered!");
hostapd_config_free(conf);
return NULL;
}
skip:
bss = conf->last_bss = conf->bss[0];
os_strlcpy(bss->iface, ifname, sizeof(bss->iface));
bss->ctrl_interface = os_strdup(ctrl_iface);
if (bss->ctrl_interface == NULL) {
hostapd_config_free(conf);
return NULL;
}
/* Reading configuration file skipped, will be done in SET!
* From reading the configuration till the end has to be done in
* SET
*/
return conf;
}
static int hostapd_data_alloc(struct hostapd_iface *hapd_iface,
struct hostapd_config *conf)
{
size_t i;
struct hostapd_data *hapd;
hapd_iface->bss = os_calloc(conf->num_bss,
sizeof(struct hostapd_data *));
if (hapd_iface->bss == NULL)
return -1;
for (i = 0; i < conf->num_bss; i++) {
hapd = hapd_iface->bss[i] =
hostapd_alloc_bss_data(hapd_iface, conf, conf->bss[i]);
if (hapd == NULL) {
while (i > 0) {
i--;
os_free(hapd_iface->bss[i]);
hapd_iface->bss[i] = NULL;
}
os_free(hapd_iface->bss);
hapd_iface->bss = NULL;
return -1;
}
hapd->msg_ctx = hapd;
}
hapd_iface->conf = conf;
hapd_iface->num_bss = conf->num_bss;
return 0;
}
int hostapd_add_iface(struct hapd_interfaces *interfaces, char *buf)
{
struct hostapd_config *conf = NULL;
struct hostapd_iface *hapd_iface = NULL, *new_iface = NULL;
struct hostapd_data *hapd;
char *ptr;
size_t i, j;
const char *conf_file = NULL, *phy_name = NULL;
if (os_strncmp(buf, "bss_config=", 11) == 0) {
char *pos;
phy_name = buf + 11;
pos = os_strchr(phy_name, ':');
if (!pos)
return -1;
*pos++ = '\0';
conf_file = pos;
if (!os_strlen(conf_file))
return -1;
hapd_iface = hostapd_interface_init_bss(interfaces, phy_name,
conf_file, 0);
if (!hapd_iface)
return -1;
for (j = 0; j < interfaces->count; j++) {
if (interfaces->iface[j] == hapd_iface)
break;
}
if (j == interfaces->count) {
struct hostapd_iface **tmp;
tmp = os_realloc_array(interfaces->iface,
interfaces->count + 1,
sizeof(struct hostapd_iface *));
if (!tmp) {
hostapd_interface_deinit_free(hapd_iface);
return -1;
}
interfaces->iface = tmp;
interfaces->iface[interfaces->count++] = hapd_iface;
new_iface = hapd_iface;
}
if (new_iface) {
if (interfaces->driver_init(hapd_iface))
goto fail;
if (hostapd_setup_interface(hapd_iface)) {
hostapd_deinit_driver(
hapd_iface->bss[0]->driver,
hapd_iface->bss[0]->drv_priv,
hapd_iface);
goto fail;
}
} else {
/* Assign new BSS with bss[0]'s driver info */
hapd = hapd_iface->bss[hapd_iface->num_bss - 1];
hapd->driver = hapd_iface->bss[0]->driver;
hapd->drv_priv = hapd_iface->bss[0]->drv_priv;
os_memcpy(hapd->own_addr, hapd_iface->bss[0]->own_addr,
ETH_ALEN);
if (start_ctrl_iface_bss(hapd) < 0 ||
(hapd_iface->state == HAPD_IFACE_ENABLED &&
hostapd_setup_bss(hapd, -1))) {
hostapd_cleanup(hapd);
hapd_iface->bss[hapd_iface->num_bss - 1] = NULL;
hapd_iface->conf->num_bss--;
hapd_iface->num_bss--;
wpa_printf(MSG_DEBUG, "%s: free hapd %p %s",
__func__, hapd, hapd->conf->iface);
hostapd_config_free_bss(hapd->conf);
hapd->conf = NULL;
os_free(hapd);
return -1;
}
}
hostapd_owe_update_trans(hapd_iface);
return 0;
}
ptr = os_strchr(buf, ' ');
if (ptr == NULL)
return -1;
*ptr++ = '\0';
if (os_strncmp(ptr, "config=", 7) == 0)
conf_file = ptr + 7;
for (i = 0; i < interfaces->count; i++) {
if (!os_strcmp(interfaces->iface[i]->conf->bss[0]->iface,
buf)) {
wpa_printf(MSG_INFO, "Cannot add interface - it "
"already exists");
return -1;
}
}
hapd_iface = hostapd_iface_alloc(interfaces);
if (hapd_iface == NULL) {
wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
"for interface", __func__);
goto fail;
}
new_iface = hapd_iface;
if (conf_file && interfaces->config_read_cb) {
conf = interfaces->config_read_cb(conf_file);
if (conf && conf->bss)
os_strlcpy(conf->bss[0]->iface, buf,
sizeof(conf->bss[0]->iface));
} else {
char *driver = os_strchr(ptr, ' ');
if (driver)
*driver++ = '\0';
conf = hostapd_config_alloc(interfaces, buf, ptr, driver);
}
if (conf == NULL || conf->bss == NULL) {
wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
"for configuration", __func__);
goto fail;
}
if (hostapd_data_alloc(hapd_iface, conf) < 0) {
wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
"for hostapd", __func__);
goto fail;
}
conf = NULL;
if (start_ctrl_iface(hapd_iface) < 0)
goto fail;
wpa_printf(MSG_INFO, "Add interface '%s'",
hapd_iface->conf->bss[0]->iface);
return 0;
fail:
if (conf)
hostapd_config_free(conf);
if (hapd_iface) {
if (hapd_iface->bss) {
for (i = 0; i < hapd_iface->num_bss; i++) {
hapd = hapd_iface->bss[i];
if (!hapd)
continue;
if (hapd_iface->interfaces &&
hapd_iface->interfaces->ctrl_iface_deinit)
hapd_iface->interfaces->
ctrl_iface_deinit(hapd);
wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
__func__, hapd_iface->bss[i],
hapd->conf->iface);
hostapd_cleanup(hapd);
os_free(hapd);
hapd_iface->bss[i] = NULL;
}
os_free(hapd_iface->bss);
hapd_iface->bss = NULL;
}
if (new_iface) {
interfaces->count--;
interfaces->iface[interfaces->count] = NULL;
}
hostapd_cleanup_iface(hapd_iface);
}
return -1;
}
static int hostapd_remove_bss(struct hostapd_iface *iface, unsigned int idx)
{
size_t i;
wpa_printf(MSG_INFO, "Remove BSS '%s'", iface->conf->bss[idx]->iface);
/* Remove hostapd_data only if it has already been initialized */
if (idx < iface->num_bss) {
struct hostapd_data *hapd = iface->bss[idx];
hostapd_bss_deinit(hapd);
wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
__func__, hapd, hapd->conf->iface);
hostapd_config_free_bss(hapd->conf);
hapd->conf = NULL;
os_free(hapd);
iface->num_bss--;
for (i = idx; i < iface->num_bss; i++)
iface->bss[i] = iface->bss[i + 1];
} else {
hostapd_config_free_bss(iface->conf->bss[idx]);
iface->conf->bss[idx] = NULL;
}
iface->conf->num_bss--;
for (i = idx; i < iface->conf->num_bss; i++)
iface->conf->bss[i] = iface->conf->bss[i + 1];
return 0;
}
int hostapd_remove_iface(struct hapd_interfaces *interfaces, char *buf)
{
struct hostapd_iface *hapd_iface;
size_t i, j, k = 0;
for (i = 0; i < interfaces->count; i++) {
hapd_iface = interfaces->iface[i];
if (hapd_iface == NULL)
return -1;
if (!os_strcmp(hapd_iface->conf->bss[0]->iface, buf)) {
wpa_printf(MSG_INFO, "Remove interface '%s'", buf);
hapd_iface->driver_ap_teardown =
!!(hapd_iface->drv_flags &
WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
hostapd_interface_deinit_free(hapd_iface);
k = i;
while (k < (interfaces->count - 1)) {
interfaces->iface[k] =
interfaces->iface[k + 1];
k++;
}
interfaces->count--;
return 0;
}
for (j = 0; j < hapd_iface->conf->num_bss; j++) {
if (!os_strcmp(hapd_iface->conf->bss[j]->iface, buf)) {
hapd_iface->driver_ap_teardown =
!(hapd_iface->drv_flags &
WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
return hostapd_remove_bss(hapd_iface, j);
}
}
}
return -1;
}
/**
* hostapd_new_assoc_sta - Notify that a new station associated with the AP
* @hapd: Pointer to BSS data
* @sta: Pointer to the associated STA data
* @reassoc: 1 to indicate this was a re-association; 0 = first association
*
* This function will be called whenever a station associates with the AP. It
* can be called from ieee802_11.c for drivers that export MLME to hostapd and
* from drv_callbacks.c based on driver events for drivers that take care of
* management frames (IEEE 802.11 authentication and association) internally.
*/
void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
int reassoc)
{
if (hapd->tkip_countermeasures) {
hostapd_drv_sta_deauth(hapd, sta->addr,
WLAN_REASON_MICHAEL_MIC_FAILURE);
return;
}
hostapd_prune_associations(hapd, sta->addr);
ap_sta_clear_disconnect_timeouts(hapd, sta);
/* IEEE 802.11F (IAPP) */
if (hapd->conf->ieee802_11f)
iapp_new_station(hapd->iapp, sta);
#ifdef CONFIG_P2P
if (sta->p2p_ie == NULL && !sta->no_p2p_set) {
sta->no_p2p_set = 1;
hapd->num_sta_no_p2p++;
if (hapd->num_sta_no_p2p == 1)
hostapd_p2p_non_p2p_sta_connected(hapd);
}
#endif /* CONFIG_P2P */
/* Start accounting here, if IEEE 802.1X and WPA are not used.
* IEEE 802.1X/WPA code will start accounting after the station has
* been authorized. */
if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen) {
ap_sta_set_authorized(hapd, sta, 1);
os_get_reltime(&sta->connected_time);
accounting_sta_start(hapd, sta);
}
/* Start IEEE 802.1X authentication process for new stations */
ieee802_1x_new_station(hapd, sta);
if (reassoc) {
if (sta->auth_alg != WLAN_AUTH_FT &&
sta->auth_alg != WLAN_AUTH_FILS_SK &&
sta->auth_alg != WLAN_AUTH_FILS_SK_PFS &&
sta->auth_alg != WLAN_AUTH_FILS_PK &&
!(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)))
wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH);
} else
wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm);
if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED) {
if (eloop_cancel_timeout(ap_handle_timer, hapd, sta) > 0) {
wpa_printf(MSG_DEBUG,
"%s: %s: canceled wired ap_handle_timer timeout for "
MACSTR,
hapd->conf->iface, __func__,
MAC2STR(sta->addr));
}
} else if (!(hapd->iface->drv_flags &
WPA_DRIVER_FLAGS_INACTIVITY_TIMER)) {
wpa_printf(MSG_DEBUG,
"%s: %s: reschedule ap_handle_timer timeout for "
MACSTR " (%d seconds - ap_max_inactivity)",
hapd->conf->iface, __func__, MAC2STR(sta->addr),
hapd->conf->ap_max_inactivity);
eloop_cancel_timeout(ap_handle_timer, hapd, sta);
eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
ap_handle_timer, hapd, sta);
}
}
const char * hostapd_state_text(enum hostapd_iface_state s)
{
switch (s) {
case HAPD_IFACE_UNINITIALIZED:
return "UNINITIALIZED";
case HAPD_IFACE_DISABLED:
return "DISABLED";
case HAPD_IFACE_COUNTRY_UPDATE:
return "COUNTRY_UPDATE";
case HAPD_IFACE_ACS:
return "ACS";
case HAPD_IFACE_HT_SCAN:
return "HT_SCAN";
case HAPD_IFACE_DFS:
return "DFS";
case HAPD_IFACE_ENABLED:
return "ENABLED";
}
return "UNKNOWN";
}
void hostapd_set_state(struct hostapd_iface *iface, enum hostapd_iface_state s)
{
wpa_printf(MSG_INFO, "%s: interface state %s->%s",
iface->conf ? iface->conf->bss[0]->iface : "N/A",
hostapd_state_text(iface->state), hostapd_state_text(s));
iface->state = s;
}
int hostapd_csa_in_progress(struct hostapd_iface *iface)
{
unsigned int i;
for (i = 0; i < iface->num_bss; i++)
if (iface->bss[i]->csa_in_progress)
return 1;
return 0;
}
#ifdef NEED_AP_MLME
static void free_beacon_data(struct beacon_data *beacon)
{
os_free(beacon->head);
beacon->head = NULL;
os_free(beacon->tail);
beacon->tail = NULL;
os_free(beacon->probe_resp);
beacon->probe_resp = NULL;
os_free(beacon->beacon_ies);
beacon->beacon_ies = NULL;
os_free(beacon->proberesp_ies);
beacon->proberesp_ies = NULL;
os_free(beacon->assocresp_ies);
beacon->assocresp_ies = NULL;
}
static int hostapd_build_beacon_data(struct hostapd_data *hapd,
struct beacon_data *beacon)
{
struct wpabuf *beacon_extra, *proberesp_extra, *assocresp_extra;
struct wpa_driver_ap_params params;
int ret;
os_memset(beacon, 0, sizeof(*beacon));
ret = ieee802_11_build_ap_params(hapd, &params);
if (ret < 0)
return ret;
ret = hostapd_build_ap_extra_ies(hapd, &beacon_extra,
&proberesp_extra,
&assocresp_extra);
if (ret)
goto free_ap_params;
ret = -1;
beacon->head = os_memdup(params.head, params.head_len);
if (!beacon->head)
goto free_ap_extra_ies;
beacon->head_len = params.head_len;
beacon->tail = os_memdup(params.tail, params.tail_len);
if (!beacon->tail)
goto free_beacon;
beacon->tail_len = params.tail_len;
if (params.proberesp != NULL) {
beacon->probe_resp = os_memdup(params.proberesp,
params.proberesp_len);
if (!beacon->probe_resp)
goto free_beacon;
beacon->probe_resp_len = params.proberesp_len;
}
/* copy the extra ies */
if (beacon_extra) {
beacon->beacon_ies = os_memdup(beacon_extra->buf,
wpabuf_len(beacon_extra));
if (!beacon->beacon_ies)
goto free_beacon;
beacon->beacon_ies_len = wpabuf_len(beacon_extra);
}
if (proberesp_extra) {
beacon->proberesp_ies = os_memdup(proberesp_extra->buf,
wpabuf_len(proberesp_extra));
if (!beacon->proberesp_ies)
goto free_beacon;
beacon->proberesp_ies_len = wpabuf_len(proberesp_extra);
}
if (assocresp_extra) {
beacon->assocresp_ies = os_memdup(assocresp_extra->buf,
wpabuf_len(assocresp_extra));
if (!beacon->assocresp_ies)
goto free_beacon;
beacon->assocresp_ies_len = wpabuf_len(assocresp_extra);
}
ret = 0;
free_beacon:
/* if the function fails, the caller should not free beacon data */
if (ret)
free_beacon_data(beacon);
free_ap_extra_ies:
hostapd_free_ap_extra_ies(hapd, beacon_extra, proberesp_extra,
assocresp_extra);
free_ap_params:
ieee802_11_free_ap_params(&params);
return ret;
}
/*
* TODO: This flow currently supports only changing channel and width within
* the same hw_mode. Any other changes to MAC parameters or provided settings
* are not supported.
*/
static int hostapd_change_config_freq(struct hostapd_data *hapd,
struct hostapd_config *conf,
struct hostapd_freq_params *params,
struct hostapd_freq_params *old_params)
{
int channel;
if (!params->channel) {
/* check if the new channel is supported by hw */
params->channel = hostapd_hw_get_channel(hapd, params->freq);
}
channel = params->channel;
if (!channel)
return -1;
/* if a pointer to old_params is provided we save previous state */
if (old_params &&
hostapd_set_freq_params(old_params, conf->hw_mode,
hostapd_hw_get_freq(hapd, conf->channel),
conf->channel, conf->ieee80211n,
conf->ieee80211ac,
conf->secondary_channel,
conf->vht_oper_chwidth,
conf->vht_oper_centr_freq_seg0_idx,
conf->vht_oper_centr_freq_seg1_idx,
conf->vht_capab))
return -1;
switch (params->bandwidth) {
case 0:
case 20:
case 40:
conf->vht_oper_chwidth = VHT_CHANWIDTH_USE_HT;
break;
case 80:
if (params->center_freq2)
conf->vht_oper_chwidth = VHT_CHANWIDTH_80P80MHZ;
else
conf->vht_oper_chwidth = VHT_CHANWIDTH_80MHZ;
break;
case 160:
conf->vht_oper_chwidth = VHT_CHANWIDTH_160MHZ;
break;
default:
return -1;
}
conf->channel = channel;
conf->ieee80211n = params->ht_enabled;
conf->secondary_channel = params->sec_channel_offset;
ieee80211_freq_to_chan(params->center_freq1,
&conf->vht_oper_centr_freq_seg0_idx);
ieee80211_freq_to_chan(params->center_freq2,
&conf->vht_oper_centr_freq_seg1_idx);
/* TODO: maybe call here hostapd_config_check here? */
return 0;
}
static int hostapd_fill_csa_settings(struct hostapd_data *hapd,
struct csa_settings *settings)
{
struct hostapd_iface *iface = hapd->iface;
struct hostapd_freq_params old_freq;
int ret;
u8 chan, vht_bandwidth;
os_memset(&old_freq, 0, sizeof(old_freq));
if (!iface || !iface->freq || hapd->csa_in_progress)
return -1;
switch (settings->freq_params.bandwidth) {
case 80:
if (settings->freq_params.center_freq2)
vht_bandwidth = VHT_CHANWIDTH_80P80MHZ;
else
vht_bandwidth = VHT_CHANWIDTH_80MHZ;
break;
case 160:
vht_bandwidth = VHT_CHANWIDTH_160MHZ;
break;
default:
vht_bandwidth = VHT_CHANWIDTH_USE_HT;
break;
}
if (ieee80211_freq_to_channel_ext(
settings->freq_params.freq,
settings->freq_params.sec_channel_offset,
vht_bandwidth,
&hapd->iface->cs_oper_class,
&chan) == NUM_HOSTAPD_MODES) {
wpa_printf(MSG_DEBUG,
"invalid frequency for channel switch (freq=%d, sec_channel_offset=%d, vht_enabled=%d)",
settings->freq_params.freq,
settings->freq_params.sec_channel_offset,
settings->freq_params.vht_enabled);
return -1;
}
settings->freq_params.channel = chan;
ret = hostapd_change_config_freq(iface->bss[0], iface->conf,
&settings->freq_params,
&old_freq);
if (ret)
return ret;
ret = hostapd_build_beacon_data(hapd, &settings->beacon_after);
/* change back the configuration */
hostapd_change_config_freq(iface->bss[0], iface->conf,
&old_freq, NULL);
if (ret)
return ret;
/* set channel switch parameters for csa ie */
hapd->cs_freq_params = settings->freq_params;
hapd->cs_count = settings->cs_count;
hapd->cs_block_tx = settings->block_tx;
ret = hostapd_build_beacon_data(hapd, &settings->beacon_csa);
if (ret) {
free_beacon_data(&settings->beacon_after);
return ret;
}
settings->counter_offset_beacon[0] = hapd->cs_c_off_beacon;
settings->counter_offset_presp[0] = hapd->cs_c_off_proberesp;
settings->counter_offset_beacon[1] = hapd->cs_c_off_ecsa_beacon;
settings->counter_offset_presp[1] = hapd->cs_c_off_ecsa_proberesp;
return 0;
}
void hostapd_cleanup_cs_params(struct hostapd_data *hapd)
{
os_memset(&hapd->cs_freq_params, 0, sizeof(hapd->cs_freq_params));
hapd->cs_count = 0;
hapd->cs_block_tx = 0;
hapd->cs_c_off_beacon = 0;
hapd->cs_c_off_proberesp = 0;
hapd->csa_in_progress = 0;
hapd->cs_c_off_ecsa_beacon = 0;
hapd->cs_c_off_ecsa_proberesp = 0;
}
int hostapd_switch_channel(struct hostapd_data *hapd,
struct csa_settings *settings)
{
int ret;
if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
wpa_printf(MSG_INFO, "CSA is not supported");
return -1;
}
ret = hostapd_fill_csa_settings(hapd, settings);
if (ret)
return ret;
ret = hostapd_drv_switch_channel(hapd, settings);
free_beacon_data(&settings->beacon_csa);
free_beacon_data(&settings->beacon_after);
if (ret) {
/* if we failed, clean cs parameters */
hostapd_cleanup_cs_params(hapd);
return ret;
}
hapd->csa_in_progress = 1;
return 0;
}
void
hostapd_switch_channel_fallback(struct hostapd_iface *iface,
const struct hostapd_freq_params *freq_params)
{
int vht_seg0_idx = 0, vht_seg1_idx = 0, vht_bw = VHT_CHANWIDTH_USE_HT;
unsigned int i;
wpa_printf(MSG_DEBUG, "Restarting all CSA-related BSSes");
if (freq_params->center_freq1)
vht_seg0_idx = 36 + (freq_params->center_freq1 - 5180) / 5;
if (freq_params->center_freq2)
vht_seg1_idx = 36 + (freq_params->center_freq2 - 5180) / 5;
switch (freq_params->bandwidth) {
case 0:
case 20:
case 40:
vht_bw = VHT_CHANWIDTH_USE_HT;
break;
case 80:
if (freq_params->center_freq2)
vht_bw = VHT_CHANWIDTH_80P80MHZ;
else
vht_bw = VHT_CHANWIDTH_80MHZ;
break;
case 160:
vht_bw = VHT_CHANWIDTH_160MHZ;
break;
default:
wpa_printf(MSG_WARNING, "Unknown CSA bandwidth: %d",
freq_params->bandwidth);
break;
}
iface->freq = freq_params->freq;
iface->conf->channel = freq_params->channel;
iface->conf->secondary_channel = freq_params->sec_channel_offset;
iface->conf->vht_oper_centr_freq_seg0_idx = vht_seg0_idx;
iface->conf->vht_oper_centr_freq_seg1_idx = vht_seg1_idx;
iface->conf->vht_oper_chwidth = vht_bw;
iface->conf->ieee80211n = freq_params->ht_enabled;
iface->conf->ieee80211ac = freq_params->vht_enabled;
/*
* cs_params must not be cleared earlier because the freq_params
* argument may actually point to one of these.
*/
for (i = 0; i < iface->num_bss; i++)
hostapd_cleanup_cs_params(iface->bss[i]);
hostapd_disable_iface(iface);
hostapd_enable_iface(iface);
}
#endif /* NEED_AP_MLME */
struct hostapd_data * hostapd_get_iface(struct hapd_interfaces *interfaces,
const char *ifname)
{
size_t i, j;
for (i = 0; i < interfaces->count; i++) {
struct hostapd_iface *iface = interfaces->iface[i];
for (j = 0; j < iface->num_bss; j++) {
struct hostapd_data *hapd = iface->bss[j];
if (os_strcmp(ifname, hapd->conf->iface) == 0)
return hapd;
}
}
return NULL;
}
void hostapd_periodic_iface(struct hostapd_iface *iface)
{
size_t i;
ap_list_timer(iface);
for (i = 0; i < iface->num_bss; i++) {
struct hostapd_data *hapd = iface->bss[i];
if (!hapd->started)
continue;
#ifndef CONFIG_NO_RADIUS
hostapd_acl_expire(hapd);
#endif /* CONFIG_NO_RADIUS */
}
}
Reference in New Issue View Git Blame Copy Permalink