/* SPDX-License-Identifier: LGPL-2.1+ */

/*

 * Copyright (C) 2018 Javier Arteaga <jarteaga@jbeta.is>

 */

#include "nm-default.h"

#include "nm-device-wireguard.h"

#include "nm-object-private.h"

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

NM_GOBJECT_PROPERTIES_DEFINE_BASE(PROP_PUBLIC_KEY, PROP_LISTEN_PORT, PROP_FWMARK, );

typedef struct {

    GBytes *public_key;

    guint32 fwmark;

    guint16 listen_port;

} NMDeviceWireGuardPrivate;

struct _NMDeviceWireGuard {

    NMDevice                 parent;

    NMDeviceWireGuardPrivate _priv;

};

struct _NMDeviceWireGuardClass {

    NMDeviceClass parent;

};

G_DEFINE_TYPE(NMDeviceWireGuard, nm_device_wireguard, NM_TYPE_DEVICE)

#define NM_DEVICE_WIREGUARD_GET_PRIVATE(self) \

    _NM_GET_PRIVATE(self, NMDeviceWireGuard, NM_IS_DEVICE_WIREGUARD, NMObject, NMDevice)

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

/**

 * nm_device_wireguard_get_public_key:

 * @device: a #NMDeviceWireGuard

 *

 * Gets the public key for this interface

 *

 * Returns: (transfer none): the #GBytes containing the 32-byte public key

 *

 * Since: 1.14

 **/

GBytes *

nm_device_wireguard_get_public_key(NMDeviceWireGuard *device)

{

    g_return_val_if_fail(NM_IS_DEVICE_WIREGUARD(device), NULL);

    return NM_DEVICE_WIREGUARD_GET_PRIVATE(device)->public_key;

}

/**

 * nm_device_wireguard_get_listen_port:

 * @device: a #NMDeviceWireGuard

 *

 * Gets the local UDP port this interface listens on

 *

 * Returns: UDP listen port

 *

 * Since: 1.14

 **/

guint16

nm_device_wireguard_get_listen_port(NMDeviceWireGuard *device)

{

    g_return_val_if_fail(NM_IS_DEVICE_WIREGUARD(device), 0);

    return NM_DEVICE_WIREGUARD_GET_PRIVATE(device)->listen_port;

}

/**

 * nm_device_wireguard_get_fwmark:

 * @device: a #NMDeviceWireGuard

 *

 * Gets the fwmark (firewall mark) for this interface.

 * It can be used to set routing policy for outgoing encrypted packets.

 * See: ip-rule(8)

 *

 * Returns: 0 if fwmark not in use, 32-bit fwmark value otherwise

 *

 * Since: 1.14

 **/

guint32

nm_device_wireguard_get_fwmark(NMDeviceWireGuard *device)

{

    g_return_val_if_fail(NM_IS_DEVICE_WIREGUARD(device), 0);

    return NM_DEVICE_WIREGUARD_GET_PRIVATE(device)->fwmark;

}

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

static void

get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)

{

    NMDeviceWireGuard *device = NM_DEVICE_WIREGUARD(object);

    switch (prop_id) {

    case PROP_PUBLIC_KEY:

        g_value_set_boxed(value, nm_device_wireguard_get_public_key(device));

        break;

    case PROP_LISTEN_PORT:

        g_value_set_uint(value, nm_device_wireguard_get_listen_port(device));

        break;

    case PROP_FWMARK:

        g_value_set_uint(value, nm_device_wireguard_get_fwmark(device));

        break;

    default:

        G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);

        break;

    }

}

static void

nm_device_wireguard_init(NMDeviceWireGuard *device)

{}

static void

finalize(GObject *object)

{

    NMDeviceWireGuardPrivate *priv = NM_DEVICE_WIREGUARD_GET_PRIVATE(object);

    g_bytes_unref(priv->public_key);

    G_OBJECT_CLASS(nm_device_wireguard_parent_class)->finalize(object);

}

const NMLDBusMetaIface _nml_dbus_meta_iface_nm_device_wireguard = NML_DBUS_META_IFACE_INIT_PROP(

    NM_DBUS_INTERFACE_DEVICE_WIREGUARD,

    nm_device_wireguard_get_type,

    NML_DBUS_META_INTERFACE_PRIO_INSTANTIATE_30,

    NML_DBUS_META_IFACE_DBUS_PROPERTIES(

        NML_DBUS_META_PROPERTY_INIT_U("FwMark", PROP_FWMARK, NMDeviceWireGuard, _priv.fwmark),

        NML_DBUS_META_PROPERTY_INIT_Q("ListenPort",

                                      PROP_LISTEN_PORT,

                                      NMDeviceWireGuard,

                                      _priv.listen_port),

        NML_DBUS_META_PROPERTY_INIT_AY("PublicKey",

                                       PROP_PUBLIC_KEY,

                                       NMDeviceWireGuard,

                                       _priv.public_key), ), );

static void

nm_device_wireguard_class_init(NMDeviceWireGuardClass *wireguard_class)

{

    GObjectClass *object_class = G_OBJECT_CLASS(wireguard_class);

    object_class->get_property = get_property;

    object_class->finalize     = finalize;

    /**

     * NMDeviceWireGuard:public-key:

     *

     * 32-byte public key, derived from the current private key.

     *

     * Since: 1.14

     **/

    obj_properties[PROP_PUBLIC_KEY] = g_param_spec_boxed(NM_DEVICE_WIREGUARD_PUBLIC_KEY,

                                                         "",

                                                         "",

                                                         G_TYPE_BYTES,

                                                         G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);

    /**

     * NMDeviceWireGuard:listen-port:

     *

     * Local UDP listen port.

     * Set to 0 to allow a random port to be chosen (default).

     *

     * Since: 1.14

     **/

    obj_properties[PROP_LISTEN_PORT] = g_param_spec_uint(NM_DEVICE_WIREGUARD_LISTEN_PORT,

                                                         "",

                                                         "",

                                                         0,

                                                         G_MAXUINT16,

                                                         0,

                                                         G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);

    /**

     * NMDeviceWireGuard:fwmark:

     *

     * Optional firewall mark - see ip-rule(8).

     * Used when setting routing policy for outgoing encrypted packets.

     * Set to 0 to disable the mark (default).

     *

     * Since: 1.14

     **/

    obj_properties[PROP_FWMARK] = g_param_spec_uint(NM_DEVICE_WIREGUARD_FWMARK,

                                                    "",

                                                    "",

                                                    0,

                                                    G_MAXUINT32,

                                                    0,

                                                    G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);

    _nml_dbus_meta_class_init_with_properties(object_class,

                                              &_nml_dbus_meta_iface_nm_device_wireguard);

}