hostap/wpa_supplicant/dbus/dbus_old_handlers_wps.c
Davina Lu 83ebf55865 wpa_supplicant: Support Multi-AP backhaul STA onboarding with WPS
The Wi-Fi Alliance Multi-AP Specification v1.0 allows onboarding of a
backhaul STA through WPS. To enable this, the backhaul STA needs to add
a Multi-AP IE to the WFA vendor extension element in the WSC M1 message
that indicates it supports the Multi-AP backhaul STA role. The Registrar
(if it support Multi-AP onboarding) will respond to that with a WSC M8
message that also contains the Multi-AP IE, and that contains the
credentials for the backhaul SSID (which may be different from the SSID
on which WPS is performed).

Introduce a new parameter to wpas_wps_start_pbc() and allow it to be
set via control interface's new multi_ap=1 parameter of WPS_PBC call.
multi_ap_backhaul_sta is set to 1 in the automatically created SSID.
Thus, if the AP does not support Multi-AP, association will fail and
WPS will be terminated.

Only wps_pbc is supported.

This commit adds the multi_ap argument only to the control socket
interface, not to the D-Bus interface.

Since WPS associates with the fronthaul BSS instead of the backhaul BSS,
we should not drop association if the AP announces fronthaul-only BSS.
Still, we should only do that in the specific case of WPS. Therefore,
add a check to multi_ap_process_assoc_resp() to allow association with a
fronthaul-only BSS if and only if key_mgmt contains WPS.

Signed-off-by: Davina Lu <ylu@quantenna.com>
Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Cc: Marianna Carrera <marianna.carrera.so@quantenna.com>
2019-02-18 22:35:41 +02:00

156 lines
4.1 KiB
C

/*
* WPA Supplicant / dbus-based control interface (WPS)
* Copyright (c) 2006, Dan Williams <dcbw@redhat.com> and Red Hat, Inc.
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "includes.h"
#include <dbus/dbus.h>
#include "common.h"
#include "../config.h"
#include "../wpa_supplicant_i.h"
#include "../wps_supplicant.h"
#include "dbus_old.h"
#include "dbus_old_handlers.h"
/**
* wpas_dbus_iface_wps_pbc - Request credentials using WPS PBC method
* @message: Pointer to incoming dbus message
* @wpa_s: %wpa_supplicant data structure
* Returns: A dbus message containing a UINT32 indicating success (1) or
* failure (0)
*
* Handler function for "wpsPbc" method call
*/
DBusMessage * wpas_dbus_iface_wps_pbc(DBusMessage *message,
struct wpa_supplicant *wpa_s)
{
char *arg_bssid = NULL;
u8 bssid[ETH_ALEN];
int ret = 0;
if (!dbus_message_get_args(message, NULL, DBUS_TYPE_STRING, &arg_bssid,
DBUS_TYPE_INVALID))
return wpas_dbus_new_invalid_opts_error(message, NULL);
if (os_strcmp(arg_bssid, "any") == 0)
ret = wpas_wps_start_pbc(wpa_s, NULL, 0, 0);
else if (!hwaddr_aton(arg_bssid, bssid))
ret = wpas_wps_start_pbc(wpa_s, bssid, 0, 0);
else {
return wpas_dbus_new_invalid_opts_error(message,
"Invalid BSSID");
}
if (ret < 0) {
return dbus_message_new_error(
message, WPAS_ERROR_WPS_PBC_ERROR,
"Could not start PBC negotiation");
}
return wpas_dbus_new_success_reply(message);
}
/**
* wpas_dbus_iface_wps_pin - Establish the PIN number of the enrollee
* @message: Pointer to incoming dbus message
* @wpa_s: %wpa_supplicant data structure
* Returns: A dbus message containing a UINT32 indicating success (1) or
* failure (0)
*
* Handler function for "wpsPin" method call
*/
DBusMessage * wpas_dbus_iface_wps_pin(DBusMessage *message,
struct wpa_supplicant *wpa_s)
{
DBusMessage *reply = NULL;
char *arg_bssid;
char *pin = NULL;
u8 bssid[ETH_ALEN], *_bssid = NULL;
int ret;
char npin[9];
if (!dbus_message_get_args(message, NULL, DBUS_TYPE_STRING, &arg_bssid,
DBUS_TYPE_STRING, &pin, DBUS_TYPE_INVALID))
return wpas_dbus_new_invalid_opts_error(message, NULL);
if (os_strcmp(arg_bssid, "any") == 0)
_bssid = NULL;
else if (!hwaddr_aton(arg_bssid, bssid))
_bssid = bssid;
else {
return wpas_dbus_new_invalid_opts_error(message,
"Invalid BSSID");
}
if (os_strlen(pin) > 0)
ret = wpas_wps_start_pin(wpa_s, _bssid, pin, 0,
DEV_PW_DEFAULT);
else
ret = wpas_wps_start_pin(wpa_s, _bssid, NULL, 0,
DEV_PW_DEFAULT);
if (ret < 0) {
return dbus_message_new_error(message,
WPAS_ERROR_WPS_PIN_ERROR,
"Could not init PIN");
}
reply = dbus_message_new_method_return(message);
if (reply == NULL)
return NULL;
if (ret > 0) {
ret = os_snprintf(npin, sizeof(npin), "%08d", ret);
if (os_snprintf_error(sizeof(npin), ret))
return wpas_dbus_new_invalid_opts_error(message,
"invalid PIN");
pin = npin;
}
dbus_message_append_args(reply, DBUS_TYPE_STRING, &pin,
DBUS_TYPE_INVALID);
return reply;
}
/**
* wpas_dbus_iface_wps_reg - Request credentials using the PIN of the AP
* @message: Pointer to incoming dbus message
* @wpa_s: %wpa_supplicant data structure
* Returns: A dbus message containing a UINT32 indicating success (1) or
* failure (0)
*
* Handler function for "wpsReg" method call
*/
DBusMessage * wpas_dbus_iface_wps_reg(DBusMessage *message,
struct wpa_supplicant *wpa_s)
{
char *arg_bssid;
char *pin = NULL;
u8 bssid[ETH_ALEN];
int ret = 0;
if (!dbus_message_get_args(message, NULL, DBUS_TYPE_STRING, &arg_bssid,
DBUS_TYPE_STRING, &pin, DBUS_TYPE_INVALID))
return wpas_dbus_new_invalid_opts_error(message, NULL);
if (!hwaddr_aton(arg_bssid, bssid))
ret = wpas_wps_start_reg(wpa_s, bssid, pin, NULL);
else {
return wpas_dbus_new_invalid_opts_error(message,
"Invalid BSSID");
}
if (ret < 0) {
return dbus_message_new_error(message,
WPAS_ERROR_WPS_REG_ERROR,
"Could not request credentials");
}
return wpas_dbus_new_success_reply(message);
}