// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2005 - 2018 Red Hat, Inc.
 * Copyright (C) 2006 - 2008 Novell, Inc.
 */

#include "nm-default.h"

#include "nm-wifi-utils.h"

#include <sys/stat.h>
#include <stdio.h>
#include <fcntl.h>

#include "nm-wifi-utils-private.h"
#include "nm-wifi-utils-nl80211.h"
#if HAVE_WEXT
#include "nm-wifi-utils-wext.h"
#endif
#include "nm-core-utils.h"

#include "platform/nm-platform-utils.h"

G_DEFINE_ABSTRACT_TYPE (NMWifiUtils, nm_wifi_utils, G_TYPE_OBJECT)

/*****************************************************************************/

static void
nm_wifi_utils_init (NMWifiUtils *self)
{
}

static void
nm_wifi_utils_class_init (NMWifiUtilsClass *klass)
{
}

NMWifiUtils *
nm_wifi_utils_new (int ifindex, struct nl_sock *genl, gboolean check_scan)
{
	NMWifiUtils *ret;

	g_return_val_if_fail (ifindex > 0, NULL);

	ret = nm_wifi_utils_nl80211_new (ifindex, genl);

#if HAVE_WEXT
	if (ret == NULL)
		ret = nm_wifi_utils_wext_new (ifindex, check_scan);
#endif

	return ret;
}

NMDeviceWifiCapabilities
nm_wifi_utils_get_caps (NMWifiUtils *data)
{
	g_return_val_if_fail (data != NULL, NM_WIFI_DEVICE_CAP_NONE);

	return data->caps;
}

NM80211Mode
nm_wifi_utils_get_mode (NMWifiUtils *data)
{
	g_return_val_if_fail (data != NULL, NM_802_11_MODE_UNKNOWN);
	return NM_WIFI_UTILS_GET_CLASS (data)->get_mode (data);
}

gboolean
nm_wifi_utils_set_mode (NMWifiUtils *data, const NM80211Mode mode)
{
	NMWifiUtilsClass *klass;

	g_return_val_if_fail (data != NULL, FALSE);
	g_return_val_if_fail (   (mode == NM_802_11_MODE_INFRA)
	                      || (mode == NM_802_11_MODE_AP)
	                      || (mode == NM_802_11_MODE_ADHOC)
	                      || (mode == NM_802_11_MODE_MESH), FALSE);

	klass = NM_WIFI_UTILS_GET_CLASS (data);

	/* nl80211 probably doesn't need this */
	return klass->set_mode ? klass->set_mode (data, mode) : TRUE;
}

gboolean
nm_wifi_utils_set_powersave (NMWifiUtils *data, guint32 powersave)
{
	NMWifiUtilsClass *klass;

	g_return_val_if_fail (data != NULL, FALSE);

	klass = NM_WIFI_UTILS_GET_CLASS (data);
	return klass->set_powersave ? klass->set_powersave (data, powersave) : TRUE;
}

NMSettingWirelessWakeOnWLan
nm_wifi_utils_get_wake_on_wlan (NMWifiUtils *data)
{
	NMWifiUtilsClass *klass;

	g_return_val_if_fail (data != NULL, NM_SETTING_WIRELESS_WAKE_ON_WLAN_IGNORE);

	klass = NM_WIFI_UTILS_GET_CLASS (data);

	return klass->get_wake_on_wlan ? klass->get_wake_on_wlan (data) : NM_SETTING_WIRELESS_WAKE_ON_WLAN_IGNORE;
}

gboolean
nm_wifi_utils_set_wake_on_wlan (NMWifiUtils *data, NMSettingWirelessWakeOnWLan wowl)
{
	NMWifiUtilsClass *klass;

	g_return_val_if_fail (data != NULL, FALSE);

	klass = NM_WIFI_UTILS_GET_CLASS (data);
	return klass->set_wake_on_wlan ? klass->set_wake_on_wlan (data, wowl) : FALSE;
}

guint32
nm_wifi_utils_get_freq (NMWifiUtils *data)
{
	g_return_val_if_fail (data != NULL, 0);
	return NM_WIFI_UTILS_GET_CLASS (data)->get_freq (data);
}

guint32
nm_wifi_utils_find_freq (NMWifiUtils *data, const guint32 *freqs)
{
	g_return_val_if_fail (data != NULL, 0);
	g_return_val_if_fail (freqs != NULL, 0);
	return NM_WIFI_UTILS_GET_CLASS (data)->find_freq (data, freqs);
}

gboolean
nm_wifi_utils_get_bssid (NMWifiUtils *data, guint8 *out_bssid)
{
	g_return_val_if_fail (data != NULL, FALSE);
	g_return_val_if_fail (out_bssid != NULL, FALSE);

	memset (out_bssid, 0, ETH_ALEN);
	return NM_WIFI_UTILS_GET_CLASS (data)->get_bssid (data, out_bssid);
}

guint32
nm_wifi_utils_get_rate (NMWifiUtils *data)
{
	g_return_val_if_fail (data != NULL, 0);
	return NM_WIFI_UTILS_GET_CLASS (data)->get_rate (data);
}

int
nm_wifi_utils_get_qual (NMWifiUtils *data)
{
	g_return_val_if_fail (data != NULL, 0);
	return NM_WIFI_UTILS_GET_CLASS (data)->get_qual (data);
}

gboolean
nm_wifi_utils_is_wifi (int dirfd, const char *ifname)
{
	g_return_val_if_fail (dirfd >= 0, FALSE);

	if (faccessat (dirfd, "phy80211", F_OK, 0) == 0)
		return TRUE;
#if HAVE_WEXT
	if (nm_wifi_utils_wext_is_wifi (ifname))
		return TRUE;
#endif
	return FALSE;
}

/* OLPC Mesh-only functions */

guint32
nm_wifi_utils_get_mesh_channel (NMWifiUtils *data)
{
	NMWifiUtilsClass *klass;

	g_return_val_if_fail (data != NULL, FALSE);

	klass = NM_WIFI_UTILS_GET_CLASS (data);
	g_return_val_if_fail (klass->get_mesh_channel != NULL, FALSE);

	return klass->get_mesh_channel (data);
}

gboolean
nm_wifi_utils_set_mesh_channel (NMWifiUtils *data, guint32 channel)
{
	NMWifiUtilsClass *klass;

	g_return_val_if_fail (data != NULL, FALSE);
	g_return_val_if_fail (channel <= 13, FALSE);

	klass = NM_WIFI_UTILS_GET_CLASS (data);
	g_return_val_if_fail (klass->set_mesh_channel != NULL, FALSE);

	return klass->set_mesh_channel (data, channel);
}

gboolean
nm_wifi_utils_set_mesh_ssid (NMWifiUtils *data, const guint8 *ssid, gsize len)
{
	NMWifiUtilsClass *klass;

	g_return_val_if_fail (data != NULL, FALSE);

	klass = NM_WIFI_UTILS_GET_CLASS (data);
	g_return_val_if_fail (klass->set_mesh_ssid != NULL, FALSE);

	return klass->set_mesh_ssid (data, ssid, len);
}

gboolean
nm_wifi_utils_indicate_addressing_running (NMWifiUtils *data, gboolean running)
{
	NMWifiUtilsClass *klass;

	g_return_val_if_fail (data != NULL, FALSE);

	klass = NM_WIFI_UTILS_GET_CLASS (data);
	return klass->indicate_addressing_running ? klass->indicate_addressing_running (data, running) : FALSE;
}
