net/bluetooth/smp_null.c

/**
 * @file smp_null.c
 * Security Manager Protocol stub
 */

/*
 * Copyright (c) 2015 Intel Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <bluetooth/bluetooth.h>
#include <errno.h>
#include "l2cap.h"
#include "smp.h"

int bt_smp_sign_verify(struct bt_conn *conn, struct bt_buf *buf)
{
	return -ENOTSUP;
}

static void bt_smp_recv(struct bt_conn *conn, struct bt_buf *buf)
{
	struct bt_smp_pairing_fail *rsp;
	struct bt_smp_hdr *hdr;

	bt_buf_put(buf);

	/* If a device does not support pairing then it shall respond with
	 * a Pairing Failed command with the reason set to “Pairing Not
	 * Supported” when any command is received.
	 * Core Specification Vol. 3, Part H, 3.3
	 */

	buf = bt_l2cap_create_pdu(conn);
	if (!buf) {
		return;
	}

	hdr = bt_buf_add(buf, sizeof(*hdr));
	hdr->code = BT_SMP_CMD_PAIRING_FAIL;

	rsp = bt_buf_add(buf, sizeof(*rsp));
	rsp->reason = BT_SMP_ERR_PAIRING_NOTSUPP;

	bt_l2cap_send(conn, BT_L2CAP_CID_SMP, buf);
}

int bt_smp_init(void)
{
	static struct bt_l2cap_chan chan = {
		.cid	= BT_L2CAP_CID_SMP,
		.recv	= bt_smp_recv,
	};

	bt_l2cap_chan_register(&chan);

	return 0;
}