blob: 6f558bffadd63da2f556625b2ed5a82dce651a85 [file] [log] [blame]
/**
* @file smp_null.c
* Security Manager Protocol stub
*/
/*
* Copyright (c) 2015-2016 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/kernel.h>
#include <errno.h>
#include <zephyr/sys/atomic.h>
#include <zephyr/sys/util.h>
#include <zephyr/bluetooth/bluetooth.h>
#include <zephyr/bluetooth/conn.h>
#include <zephyr/bluetooth/buf.h>
#include "hci_core.h"
#include "conn_internal.h"
#include "l2cap_internal.h"
#include "smp.h"
#define LOG_LEVEL CONFIG_BT_HCI_CORE_LOG_LEVEL
#include <zephyr/logging/log.h>
LOG_MODULE_REGISTER(bt_smp);
static struct bt_l2cap_le_chan bt_smp_pool[CONFIG_BT_MAX_CONN];
int bt_smp_sign_verify(struct bt_conn *conn, struct net_buf *buf)
{
return -ENOTSUP;
}
int bt_smp_sign(struct bt_conn *conn, struct net_buf *buf)
{
return -ENOTSUP;
}
static int bt_smp_recv(struct bt_l2cap_chan *chan, struct net_buf *req_buf)
{
struct bt_conn *conn = chan->conn;
struct bt_smp_pairing_fail *rsp;
struct bt_smp_hdr *hdr;
struct net_buf *buf;
ARG_UNUSED(req_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(NULL, 0);
/* NULL is not a possible return due to K_FOREVER */
hdr = net_buf_add(buf, sizeof(*hdr));
hdr->code = BT_SMP_CMD_PAIRING_FAIL;
rsp = net_buf_add(buf, sizeof(*rsp));
rsp->reason = BT_SMP_ERR_PAIRING_NOTSUPP;
if (bt_l2cap_send(conn, BT_L2CAP_CID_SMP, buf)) {
net_buf_unref(buf);
}
return 0;
}
static int bt_smp_accept(struct bt_conn *conn, struct bt_l2cap_chan **chan)
{
int i;
static const struct bt_l2cap_chan_ops ops = {
.recv = bt_smp_recv,
};
LOG_DBG("conn %p handle %u", conn, conn->handle);
for (i = 0; i < ARRAY_SIZE(bt_smp_pool); i++) {
struct bt_l2cap_le_chan *smp = &bt_smp_pool[i];
if (smp->chan.conn) {
continue;
}
smp->chan.ops = &ops;
*chan = &smp->chan;
return 0;
}
LOG_ERR("No available SMP context for conn %p", conn);
return -ENOMEM;
}
BT_L2CAP_CHANNEL_DEFINE(smp_fixed_chan, BT_L2CAP_CID_SMP, bt_smp_accept, NULL);
int bt_smp_init(void)
{
return 0;
}