/******************************************************************************
 *
 *  Copyright (C) 2003-2012 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 is the main implementation file for the BTA device manager.
 *
 ******************************************************************************/

#include "bta_api.h"
#include "bta_sys.h"
#include "bta_dm_int.h"


/*****************************************************************************
** Constants and types
*****************************************************************************/

#if BTA_DYNAMIC_MEMORY == FALSE
tBTA_DM_CB  bta_dm_cb;
tBTA_DM_SEARCH_CB bta_dm_search_cb;
tBTA_DM_DI_CB       bta_dm_di_cb;
#endif


#define BTA_DM_NUM_ACTIONS  (BTA_DM_MAX_EVT & 0x00ff)

/* type for action functions */
typedef void (*tBTA_DM_ACTION)(tBTA_DM_MSG *p_data);

/* action function list */
const tBTA_DM_ACTION bta_dm_action[] =
{

    /* device manager local device API events */
    bta_dm_enable,            /* 0  BTA_DM_API_ENABLE_EVT */
    bta_dm_disable,           /* 1  BTA_DM_API_DISABLE_EVT */
    bta_dm_set_dev_name,      /* 2  BTA_DM_API_SET_NAME_EVT */
    bta_dm_set_visibility,    /* 3  BTA_DM_API_SET_VISIBILITY_EVT */
    bta_dm_set_afhchannels,   /* 4  BTA_DM_API_SET_AFH_CHANNELS_EVT */
    bta_dm_signal_strength,   /* 5  BTA_API_DM_SIG_STRENGTH_EVT */
    bta_dm_vendor_spec_command,/* 6  BTA_DM_API_VENDOR_SPECIFIC_COMMAND_EVT */
    bta_dm_tx_inqpower,       /* 7  BTA_DM_API_SIG_STRENGTH_EVT */
    bta_dm_acl_change,        /* 8  BTA_DM_ACL_CHANGE_EVT */
    bta_dm_add_device,        /* 9  BTA_DM_API_ADD_DEVICE_EVT */
    bta_dm_close_acl,         /* 10 BTA_DM_API_ADD_DEVICE_EVT */

    /* security API events */
    bta_dm_bond,              /* 11  BTA_DM_API_BOND_EVT */
    bta_dm_bond_cancel,       /* 12  BTA_DM_API_BOND_CANCEL_EVT */
    bta_dm_pin_reply,         /* 13 BTA_DM_API_PIN_REPLY_EVT */
    bta_dm_link_policy,       /* 14 BTA_DM_API_LINK_POLICY_EVT */
    bta_dm_auth_reply,        /* 15 BTA_DM_API_AUTH_REPLY_EVT */

    /* power manger events */
    bta_dm_pm_btm_status,     /* 16 BTA_DM_PM_BTM_STATUS_EVT */
    bta_dm_pm_timer,          /* 17 BTA_DM_PM_TIMER_EVT*/

    /* simple pairing events */
    bta_dm_confirm,           /* 18 BTA_DM_API_CONFIRM_EVT */

    bta_dm_set_encryption,    /* BTA_DM_API_SET_ENCRYPTION_EVT */

#if (BTM_LOCAL_IO_CAPS != BTM_IO_CAP_NONE)
    bta_dm_passkey_cancel,    /* 19 BTA_DM_API_PASKY_CANCEL_EVT */
#endif
#if (BTM_OOB_INCLUDED == TRUE)
    bta_dm_loc_oob,           /* 20 BTA_DM_API_LOC_OOB_EVT */
    bta_dm_ci_io_req_act,     /* 21 BTA_DM_CI_IO_REQ_EVT */
    bta_dm_ci_rmt_oob_act,    /* 22 BTA_DM_CI_RMT_OOB_EVT */
#endif /* BTM_OOB_INCLUDED */

    bta_dm_remove_device,      /*  BTA_DM_API_REMOVE_DEVICE_EVT */

#if BLE_INCLUDED == TRUE
    bta_dm_add_blekey,          /*  BTA_DM_API_ADD_BLEKEY_EVT           */
    bta_dm_add_ble_device,      /*  BTA_DM_API_ADD_BLEDEVICE_EVT        */
    bta_dm_ble_passkey_reply,   /*  BTA_DM_API_BLE_PASSKEY_REPLY_EVT    */
    bta_dm_security_grant,
    bta_dm_ble_set_bg_conn_type,
    bta_dm_ble_set_conn_params,      /* BTA_DM_API_BLE_CONN_PARAM_EVT */
    bta_dm_ble_set_scan_params,      /* BTA_DM_API_BLE_SCAN_PARAM_EVT */
    bta_dm_ble_observe,
    bta_dm_ble_set_adv_params,     /* BTA_DM_API_BLE_SCAN_PARAM_EVT */
    bta_dm_ble_set_adv_config,     /* BTA_DM_API_BLE_SET_ADV_CONFIG_EVT */
#endif

#if ( BTM_EIR_SERVER_INCLUDED == TRUE )&&( BTA_EIR_CANNED_UUID_LIST != TRUE )&&(BTA_EIR_SERVER_NUM_CUSTOM_UUID > 0)
    bta_dm_update_eir_uuid,     /*  BTA_DM_API_UPDATE_EIR_UUID_EVT      */
#endif
#if (BTM_EIR_SERVER_INCLUDED == TRUE)
    bta_dm_set_eir_config,      /*  BTA_DM_API_SET_EIR_CONFIG_EVT       */
#endif

    bta_dm_enable_test_mode,    /*  BTA_DM_API_ENABLE_TEST_MODE_EVT     */
    bta_dm_disable_test_mode,   /*  BTA_DM_API_DISABLE_TEST_MODE_EVT    */
    bta_dm_execute_callback,     /*  BTA_DM_API_EXECUTE_CBACK_EVT        */
    bta_dm_set_afh_channel_assesment      /* BTA_DM_API_SET_AFH_CHANNEL_ASSESMENT_EVT */
};


/* state machine action enumeration list */
enum
{
    BTA_DM_API_SEARCH,                  /* 0 bta_dm_search_start */
    BTA_DM_API_SEARCH_CANCEL,           /* 1 bta_dm_search_cancel */
    BTA_DM_API_DISCOVER,                /* 2 bta_dm_discover */
    BTA_DM_INQUIRY_CMPL,                /* 3 bta_dm_inq_cmpl */
    BTA_DM_REMT_NAME,                   /* 4 bta_dm_rmt_name */
    BTA_DM_SDP_RESULT,                  /* 5 bta_dm_sdp_result */
    BTA_DM_SEARCH_CMPL,                 /* 6 bta_dm_search_cmpl*/
    BTA_DM_FREE_SDP_DB,                 /* 7 bta_dm_free_sdp_db */
    BTA_DM_DISC_RESULT,                 /* 8 bta_dm_disc_result */
    BTA_DM_SEARCH_RESULT,               /* 9 bta_dm_search_result */
    BTA_DM_QUEUE_SEARCH,                /* 10 bta_dm_queue_search */
    BTA_DM_QUEUE_DISC,                  /* 11 bta_dm_queue_disc */
    BTA_DM_SEARCH_CLEAR_QUEUE,          /* 12 bta_dm_search_clear_queue */
    BTA_DM_SEARCH_CANCEL_CMPL,          /* 13 bta_dm_search_cancel_cmpl */
    BTA_DM_SEARCH_CANCEL_NOTIFY,        /* 14 bta_dm_search_cancel_notify */
    BTA_DM_SEARCH_CANCEL_TRANSAC_CMPL,  /* 15 bta_dm_search_cancel_transac_cmpl */
    BTA_DM_DISC_RMT_NAME,               /* 16 bta_dm_disc_rmt_name */
    BTA_DM_API_DI_DISCOVER,             /* 17 bta_dm_di_disc */
#if BLE_INCLUDED == TRUE
    BTA_DM_CLOSE_GATT_CONN,             /* 18 bta_dm_close_gatt_conn */
#endif
    BTA_DM_SEARCH_NUM_ACTIONS           /* 19 */
};


/* action function list */
const tBTA_DM_ACTION bta_dm_search_action[] =
{

  bta_dm_search_start,              /* 0 BTA_DM_API_SEARCH */
  bta_dm_search_cancel,             /* 1 BTA_DM_API_SEARCH_CANCEL */
  bta_dm_discover,                  /* 2 BTA_DM_API_DISCOVER */
  bta_dm_inq_cmpl,                  /* 3 BTA_DM_INQUIRY_CMPL */
  bta_dm_rmt_name,                  /* 4 BTA_DM_REMT_NAME */
  bta_dm_sdp_result,                /* 5 BTA_DM_SDP_RESULT */
  bta_dm_search_cmpl,               /* 6 BTA_DM_SEARCH_CMPL */
  bta_dm_free_sdp_db,               /* 7 BTA_DM_FREE_SDP_DB */
  bta_dm_disc_result,               /* 8 BTA_DM_DISC_RESULT */
  bta_dm_search_result,             /* 9 BTA_DM_SEARCH_RESULT */
  bta_dm_queue_search,              /* 10 BTA_DM_QUEUE_SEARCH */
  bta_dm_queue_disc,                /* 11 BTA_DM_QUEUE_DISC */
  bta_dm_search_clear_queue,        /* 12 BTA_DM_SEARCH_CLEAR_QUEUE */
  bta_dm_search_cancel_cmpl,        /* 13 BTA_DM_SEARCH_CANCEL_CMPL */
  bta_dm_search_cancel_notify,      /* 14 BTA_DM_SEARCH_CANCEL_NOTIFY */
  bta_dm_search_cancel_transac_cmpl, /* 15 BTA_DM_SEARCH_CANCEL_TRANSAC_CMPL */
  bta_dm_disc_rmt_name,             /* 16 BTA_DM_DISC_RMT_NAME */
  bta_dm_di_disc                    /* 17 BTA_DM_API_DI_DISCOVER */
#if BLE_INCLUDED == TRUE
  ,bta_dm_close_gatt_conn
#endif
};

#define BTA_DM_SEARCH_IGNORE       BTA_DM_SEARCH_NUM_ACTIONS
/* state table information */
#define BTA_DM_SEARCH_ACTIONS              2       /* number of actions */
#define BTA_DM_SEARCH_NEXT_STATE           2       /* position of next state */
#define BTA_DM_SEARCH_NUM_COLS             3       /* number of columns in state tables */


/* state table for listen state */
const UINT8 bta_dm_search_idle_st_table[][BTA_DM_SEARCH_NUM_COLS] =
{

/* Event                        Action 1                            Action 2                    Next State */
/* API_SEARCH */            {BTA_DM_API_SEARCH,                BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_ACTIVE},
/* API_SEARCH_CANCEL */     {BTA_DM_SEARCH_CANCEL_NOTIFY,      BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_IDLE},
/* API_SEARCH_DISC */       {BTA_DM_API_DISCOVER,              BTA_DM_SEARCH_IGNORE,          BTA_DM_DISCOVER_ACTIVE},
/* INQUIRY_CMPL */          {BTA_DM_SEARCH_IGNORE,             BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_IDLE},
/* REMT_NAME_EVT */         {BTA_DM_SEARCH_IGNORE,             BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_IDLE},
/* SDP_RESULT_EVT */        {BTA_DM_FREE_SDP_DB,               BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_IDLE},
/* SEARCH_CMPL_EVT */       {BTA_DM_SEARCH_IGNORE,             BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_IDLE},
/* DISCV_RES_EVT */         {BTA_DM_SEARCH_IGNORE,             BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_IDLE},
/* API_DI_DISCOVER_EVT */   {BTA_DM_API_DI_DISCOVER,           BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_ACTIVE}
#if BLE_INCLUDED == TRUE
/* DISC_CLOSE_TOUT_EVT */   ,{BTA_DM_CLOSE_GATT_CONN,           BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_IDLE}
#endif

};
const UINT8 bta_dm_search_search_active_st_table[][BTA_DM_SEARCH_NUM_COLS] =
{

/* Event                        Action 1                            Action 2                    Next State */
/* API_SEARCH */            {BTA_DM_SEARCH_IGNORE,             BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_ACTIVE},
/* API_SEARCH_CANCEL */     {BTA_DM_API_SEARCH_CANCEL,         BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_CANCELLING},
/* API_SEARCH_DISC */       {BTA_DM_SEARCH_IGNORE,             BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_ACTIVE},
/* INQUIRY_CMPL */          {BTA_DM_INQUIRY_CMPL,              BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_ACTIVE},
/* REMT_NAME_EVT */         {BTA_DM_REMT_NAME,                 BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_ACTIVE},
/* SDP_RESULT_EVT */        {BTA_DM_SDP_RESULT,                BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_ACTIVE},
/* SEARCH_CMPL_EVT */       {BTA_DM_SEARCH_CMPL,               BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_IDLE},
/* DISCV_RES_EVT */         {BTA_DM_SEARCH_RESULT,             BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_ACTIVE},
/* API_DI_DISCOVER_EVT */   {BTA_DM_SEARCH_IGNORE,             BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_ACTIVE}

#if BLE_INCLUDED == TRUE
/* DISC_CLOSE_TOUT_EVT */   ,{BTA_DM_SEARCH_IGNORE,             BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_ACTIVE}
#endif

};

const UINT8 bta_dm_search_search_cancelling_st_table[][BTA_DM_SEARCH_NUM_COLS] =
{

/* Event                        Action 1                            Action 2                    Next State */
/* API_SEARCH */            {BTA_DM_QUEUE_SEARCH,               BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_CANCELLING},
/* API_SEARCH_CANCEL */     {BTA_DM_SEARCH_CLEAR_QUEUE,         BTA_DM_SEARCH_CANCEL_NOTIFY,   BTA_DM_SEARCH_CANCELLING},
/* API_SEARCH_DISC */       {BTA_DM_QUEUE_DISC,                 BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_CANCELLING},
/* INQUIRY_CMPL */          {BTA_DM_SEARCH_CANCEL_CMPL,         BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_IDLE},
/* REMT_NAME_EVT */         {BTA_DM_SEARCH_CANCEL_TRANSAC_CMPL, BTA_DM_SEARCH_CANCEL_CMPL,     BTA_DM_SEARCH_IDLE},
/* SDP_RESULT_EVT */        {BTA_DM_SEARCH_CANCEL_TRANSAC_CMPL, BTA_DM_SEARCH_CANCEL_CMPL,     BTA_DM_SEARCH_IDLE},
/* SEARCH_CMPL_EVT */       {BTA_DM_SEARCH_CANCEL_TRANSAC_CMPL, BTA_DM_SEARCH_CANCEL_CMPL,     BTA_DM_SEARCH_IDLE},
/* DISCV_RES_EVT */         {BTA_DM_SEARCH_CANCEL_TRANSAC_CMPL, BTA_DM_SEARCH_CANCEL_CMPL,     BTA_DM_SEARCH_IDLE},
/* API_DI_DISCOVER_EVT */   {BTA_DM_SEARCH_IGNORE,              BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_CANCELLING}

#if BLE_INCLUDED == TRUE
/* DISC_CLOSE_TOUT_EVT */   ,{BTA_DM_SEARCH_IGNORE,              BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_CANCELLING}
#endif

};

const UINT8 bta_dm_search_disc_active_st_table[][BTA_DM_SEARCH_NUM_COLS] =
{

/* Event                        Action 1                            Action 2                    Next State */
/* API_SEARCH */            {BTA_DM_SEARCH_IGNORE,             BTA_DM_SEARCH_IGNORE,          BTA_DM_DISCOVER_ACTIVE},
/* API_SEARCH_CANCEL */     {BTA_DM_SEARCH_CANCEL_NOTIFY,      BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_CANCELLING},
/* API_SEARCH_DISC */       {BTA_DM_SEARCH_IGNORE,             BTA_DM_SEARCH_IGNORE,          BTA_DM_DISCOVER_ACTIVE},
/* INQUIRY_CMPL */          {BTA_DM_SEARCH_IGNORE,             BTA_DM_SEARCH_IGNORE,          BTA_DM_DISCOVER_ACTIVE},
/* REMT_NAME_EVT */         {BTA_DM_DISC_RMT_NAME,             BTA_DM_SEARCH_IGNORE,          BTA_DM_DISCOVER_ACTIVE},
/* SDP_RESULT_EVT */        {BTA_DM_SDP_RESULT,                BTA_DM_SEARCH_IGNORE,          BTA_DM_DISCOVER_ACTIVE},
/* SEARCH_CMPL_EVT */       {BTA_DM_SEARCH_CMPL,               BTA_DM_SEARCH_IGNORE,          BTA_DM_SEARCH_IDLE},
/* DISCV_RES_EVT */         {BTA_DM_DISC_RESULT,               BTA_DM_SEARCH_IGNORE,          BTA_DM_DISCOVER_ACTIVE},
/* API_DI_DISCOVER_EVT */   {BTA_DM_SEARCH_IGNORE,             BTA_DM_SEARCH_IGNORE,          BTA_DM_DISCOVER_ACTIVE}

#if BLE_INCLUDED == TRUE
/* DISC_CLOSE_TOUT_EVT */   ,{BTA_DM_SEARCH_IGNORE,             BTA_DM_SEARCH_IGNORE,          BTA_DM_DISCOVER_ACTIVE}
#endif

};

typedef const UINT8 (*tBTA_DM_ST_TBL)[BTA_DM_SEARCH_NUM_COLS];

/* state table */
const tBTA_DM_ST_TBL bta_dm_search_st_tbl[] = {
    bta_dm_search_idle_st_table,
    bta_dm_search_search_active_st_table,
    bta_dm_search_search_cancelling_st_table,
    bta_dm_search_disc_active_st_table
};


/*******************************************************************************
**
** Function         bta_dm_sm_disable
**
** Description     unregister BTA DM
**
**
** Returns          void
**
*******************************************************************************/
void bta_dm_sm_disable( )
{
    bta_sys_deregister( BTA_ID_DM );
}


/*******************************************************************************
**
** Function         bta_dm_sm_execute
**
** Description      State machine event handling function for DM
**
**
** Returns          void
**
*******************************************************************************/
BOOLEAN bta_dm_sm_execute(BT_HDR *p_msg)
{
    UINT16  event = p_msg->event & 0x00ff;

    APPL_TRACE_EVENT1("bta_dm_sm_execute event:0x%x", event);

    /* execute action functions */
    if(event < BTA_DM_NUM_ACTIONS)
    {
        (*bta_dm_action[event])( (tBTA_DM_MSG*) p_msg);
    }

    return TRUE;
}

/*******************************************************************************
**
** Function         bta_dm_sm_search_disable
**
** Description     unregister BTA SEARCH DM
**
**
** Returns          void
**
*******************************************************************************/
void bta_dm_search_sm_disable( )
{
    bta_sys_deregister( BTA_ID_DM_SEARCH );

}


/*******************************************************************************
**
** Function         bta_dm_search_sm_execute
**
** Description      State machine event handling function for DM
**
**
** Returns          void
**
*******************************************************************************/
BOOLEAN bta_dm_search_sm_execute(BT_HDR *p_msg)
{
    tBTA_DM_ST_TBL      state_table;
    UINT8               action;
    int                 i;

    APPL_TRACE_EVENT2("bta_dm_search_sm_execute state:%d, event:0x%x",
        bta_dm_search_cb.state, p_msg->event);

    /* look up the state table for the current state */
    state_table = bta_dm_search_st_tbl[bta_dm_search_cb.state];

    bta_dm_search_cb.state = state_table[p_msg->event & 0x00ff][BTA_DM_SEARCH_NEXT_STATE];


    /* execute action functions */
    for (i = 0; i < BTA_DM_SEARCH_ACTIONS; i++)
    {
        if ((action = state_table[p_msg->event & 0x00ff][i]) != BTA_DM_SEARCH_IGNORE)
        {
            (*bta_dm_search_action[action])( (tBTA_DM_MSG*) p_msg);
        }
        else
        {
            break;
        }
    }
    return TRUE;
}