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/******************************************************************************
*
* Copyright (C) 1999-2012 Broadcom 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.
*
******************************************************************************/
/******************************************************************************
*
* This file contains functions for the SMP L2Cap interface
*
******************************************************************************/
#include "bt_target.h"
#if SMP_INCLUDED == TRUE
#include <string.h>
#include "btm_ble_api.h"
#include "l2c_api.h"
#include "smp_int.h"
static void smp_connect_cback (BD_ADDR bd_addr, BOOLEAN connected, UINT16 reason);
static void smp_data_ind (BD_ADDR bd_addr, BT_HDR *p_buf);
/*******************************************************************************
**
** Function smp_l2cap_if_init
**
** Description This function is called during the SMP task startup
** to register interface functions with L2CAP.
**
*******************************************************************************/
void smp_l2cap_if_init (void)
{
tL2CAP_FIXED_CHNL_REG fixed_reg;
SMP_TRACE_EVENT0 ("SMDBG l2c smp_l2cap_if_init");
fixed_reg.fixed_chnl_opts.mode = L2CAP_FCR_BASIC_MODE;
fixed_reg.fixed_chnl_opts.max_transmit = 0;
fixed_reg.fixed_chnl_opts.rtrans_tout = 0;
fixed_reg.fixed_chnl_opts.mon_tout = 0;
fixed_reg.fixed_chnl_opts.mps = 0;
fixed_reg.fixed_chnl_opts.tx_win_sz = 0;
fixed_reg.pL2CA_FixedConn_Cb = smp_connect_cback;
fixed_reg.pL2CA_FixedData_Cb = smp_data_ind;
fixed_reg.default_idle_tout = 60; /* set 60 seconds timeout, 0xffff default idle timeout */
/* Now, register with L2CAP */
L2CA_RegisterFixedChannel (L2CAP_SMP_CID, &fixed_reg);
}
/*******************************************************************************
**
** Function smp_connect_cback
**
** Description This callback function is called by L2CAP to indicate that
** SMP channel is
** connected (conn = TRUE)/disconnected (conn = FALSE).
**
*******************************************************************************/
static void smp_connect_cback (BD_ADDR bd_addr, BOOLEAN connected, UINT16 reason)
{
tSMP_CB *p_cb = &smp_cb;
tSMP_INT_DATA int_data;
SMP_TRACE_EVENT0 ("SMDBG l2c smp_connect_cback ");
if (memcmp(bd_addr, p_cb->pairing_bda, BD_ADDR_LEN) == 0)
{
SMP_TRACE_EVENT3 ("smp_connect_cback() for pairing BDA: %08x%04x Event: %s",
(bd_addr[0]<<24)+(bd_addr[1]<<16)+(bd_addr[2]<<8) + bd_addr[3],
(bd_addr[4]<<8)+bd_addr[5], (connected) ? "connected" : "disconnected");
if (connected)
{
if(!p_cb->connect_initialized)
{
p_cb->connect_initialized = TRUE;
/* initiating connection established */
p_cb->role = L2CA_GetBleConnRole(bd_addr);
/* initialize local i/r key to be default keys */
p_cb->loc_r_key = p_cb->loc_i_key = SMP_SEC_DEFAULT_KEY;
p_cb->loc_auth_req = p_cb->peer_auth_req = SMP_DEFAULT_AUTH_REQ;
p_cb->cb_evt = SMP_IO_CAP_REQ_EVT;
smp_sm_event(p_cb, SMP_L2CAP_CONN_EVT, NULL);
BTM_ReadConnectionAddr(p_cb->local_bda);
}
}
else
{
int_data.reason = reason;
/* Disconnected while doing security */
smp_sm_event(p_cb, SMP_L2CAP_DISCONN_EVT, &int_data);
}
}
}
/*******************************************************************************
**
** Function smp_data_ind
**
** Description This function is called when data is received from L2CAP on
** SMP channel.
**
**
** Returns void
**
*******************************************************************************/
static void smp_data_ind (BD_ADDR bd_addr, BT_HDR *p_buf)
{
tSMP_CB *p_cb = &smp_cb;
UINT8 *p = (UINT8 *)(p_buf + 1) + p_buf->offset;
UINT8 cmd ;
SMP_TRACE_EVENT0 ("SMDBG l2c smp_data_ind");
SMP_TRACE_EVENT0 ("Got smp_data_ind");
STREAM_TO_UINT8(cmd, p);
/* reject the pairing request if there is an on-going SMP pairing */
if (SMP_OPCODE_PAIRING_REQ == cmd || SMP_OPCODE_SEC_REQ == cmd)
{
if (p_cb->state == SMP_ST_IDLE)
{
p_cb->role = L2CA_GetBleConnRole(bd_addr);
memcpy(&p_cb->pairing_bda[0], bd_addr, BD_ADDR_LEN);
}
else if (memcmp(&bd_addr[0], p_cb->pairing_bda, BD_ADDR_LEN))
{
p_cb->failure = SMP_PAIR_NOT_SUPPORT;
smp_send_cmd(SMP_OPCODE_PAIRING_FAILED, p_cb);
}
}
if (memcmp(&bd_addr[0], p_cb->pairing_bda, BD_ADDR_LEN) == 0)
{
btu_stop_timer (&p_cb->rsp_timer_ent);
smp_sm_event(p_cb, cmd, p);
}
GKI_freebuf (p_buf);
}
#endif
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