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WPS: Fix Beacon WPS IE on concurrent dualband AP in PBC mode

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The Beacon frame must include UUID-E and RF Bands attributes when
in active PBC mode to allow stations to figure out that two BSSes in
PBC mode is not a PBC session overlap.
This commit is contained in:
Jouni Malinen 2010-09-20 15:32:29 -07:00 committed by Jouni Malinen
parent 9647120b07
commit 3379a3a795
3 changed files with 44 additions and 1 deletions
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22
src/ap/wps_hostapd.c
View file

@ -529,6 +529,23 @@ static const u8 * get_own_uuid(struct hostapd_iface *iface)
}
static int count_interface_cb(struct hostapd_iface *iface, void *ctx)
{
int *count= ctx;
(*count)++;
return 0;
}
static int interface_count(struct hostapd_iface *iface)
{
int count = 0;
iface->for_each_interface(iface->interfaces, count_interface_cb,
&count);
return count;
}
int hostapd_init_wps(struct hostapd_data *hapd,
struct hostapd_bss_config *conf)
{
@ -688,10 +705,13 @@ int hostapd_init_wps(struct hostapd_data *hapd,
conf->skip_cred_build;
if (conf->ssid.security_policy == SECURITY_STATIC_WEP)
cfg.static_wep_only = 1;
cfg.dualband = interface_count(hapd->iface) > 1;
if (cfg.dualband)
wpa_printf(MSG_DEBUG, "WPS: Dualband AP");
wps->registrar = wps_registrar_init(wps, &cfg);
if (wps->registrar == NULL) {
printf("Failed to initialize WPS Registrar\n");
wpa_printf(MSG_ERROR, "Failed to initialize WPS Registrar");
os_free(wps->network_key);
os_free(wps);
return -1;

5
src/wps/wps.h
View file

@ -352,6 +352,11 @@ struct wps_registrar_config {
* static_wep_only - Whether the BSS supports only static WEP
*/
int static_wep_only;
/**
* dualband - Whether this is a concurrent dualband AP
*/
int dualband;
};

18
src/wps/wps_registrar.c
View file

@ -126,6 +126,7 @@ struct wps_registrar {
int sel_reg_dev_password_id_override;
int sel_reg_config_methods_override;
int static_wep_only;
int dualband;
struct wps_registrar_device *devices;
@ -430,6 +431,20 @@ static int wps_build_sel_reg_dev_password_id(struct wps_registrar *reg,
}
static int wps_build_sel_pbc_reg_uuid_e(struct wps_registrar *reg,
struct wpabuf *msg)
{
u16 id = reg->pbc ? DEV_PW_PUSHBUTTON : DEV_PW_DEFAULT;
if (!reg->sel_reg_union)
return 0;
if (reg->sel_reg_dev_password_id_override >= 0)
id = reg->sel_reg_dev_password_id_override;
if (id != DEV_PW_PUSHBUTTON || !reg->dualband)
return 0;
return wps_build_uuid_e(msg, reg->wps->uuid);
}
static void wps_set_pushbutton(u16 *methods, u16 conf_methods)
{
*methods |= WPS_CONFIG_PUSHBUTTON;
@ -572,6 +587,7 @@ wps_registrar_init(struct wps_context *wps,
reg->sel_reg_dev_password_id_override = -1;
reg->sel_reg_config_methods_override = -1;
reg->static_wep_only = cfg->static_wep_only;
reg->dualband = cfg->dualband;
if (wps_set_ie(reg)) {
wps_registrar_deinit(reg);
@ -1069,6 +1085,8 @@ static int wps_set_ie(struct wps_registrar *reg)
wps_build_selected_registrar(reg, beacon) ||
wps_build_sel_reg_dev_password_id(reg, beacon) ||
wps_build_sel_reg_config_methods(reg, beacon) ||
wps_build_sel_pbc_reg_uuid_e(reg, beacon) ||
(reg->dualband && wps_build_rf_bands(&reg->wps->dev, beacon)) ||
wps_build_wfa_ext(beacon, 0, auth_macs, count)) {
wpabuf_free(beacon);
wpabuf_free(probe);