btif/src/btif_gatt_util.cc

/******************************************************************************
 *
 *  Copyright 2009-2013 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.
 *
 ******************************************************************************/

#define LOG_TAG "bt_btif_gatt"

#include "btif_gatt_util.h"

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <hardware/bluetooth.h>
#include <hardware/bt_gatt.h>

#include "bt_common.h"
#include "bta_api.h"
#include "bta_gatt_api.h"
#include "bta_jv_api.h"
#include "btif_common.h"
#include "btif_config.h"
#include "btif_dm.h"
#include "btif_gatt.h"
#include "btif_storage.h"
#include "btif_util.h"
#include "osi/include/osi.h"

using bluetooth::Uuid;

/*******************************************************************************
 * BTIF -> BTA conversion functions
 ******************************************************************************/
void btif_to_bta_response(tGATTS_RSP* p_dest, btgatt_response_t* p_src) {
  p_dest->attr_value.auth_req = p_src->attr_value.auth_req;
  p_dest->attr_value.handle = p_src->attr_value.handle;
  p_dest->attr_value.len = p_src->attr_value.len;
  p_dest->attr_value.offset = p_src->attr_value.offset;
  memcpy(p_dest->attr_value.value, p_src->attr_value.value, GATT_MAX_ATTR_LEN);
}

/*******************************************************************************
 * Encrypted link map handling
 ******************************************************************************/

#if (BLE_DELAY_REQUEST_ENC == FALSE)
static bool btif_gatt_is_link_encrypted(const RawAddress& bd_addr) {
  return BTA_JvIsEncrypted(bd_addr);
}

static void btif_gatt_set_encryption_cb(UNUSED_ATTR const RawAddress& bd_addr,
                                        UNUSED_ATTR tBTA_TRANSPORT transport,
                                        tBTA_STATUS result) {
  if (result != BTA_SUCCESS && result != BTA_BUSY) {
    BTIF_TRACE_WARNING("%s() - Encryption failed (%d)", __func__, result);
  }
}
#endif

#if (BLE_DELAY_REQUEST_ENC == FALSE)
void btif_gatt_check_encrypted_link(RawAddress bd_addr,
                                    tGATT_TRANSPORT transport_link) {
  tBTM_LE_PENC_KEYS key;
  if ((btif_storage_get_ble_bonding_key(
           &bd_addr, BTIF_DM_LE_KEY_PENC, (uint8_t*)&key,
           sizeof(tBTM_LE_PENC_KEYS)) == BT_STATUS_SUCCESS) &&
      !btif_gatt_is_link_encrypted(bd_addr)) {
    BTIF_TRACE_DEBUG("%s: transport = %d", __func__, transport_link);
    BTA_DmSetEncryption(bd_addr, transport_link, &btif_gatt_set_encryption_cb,
                        BTM_BLE_SEC_ENCRYPT);
  }
}
#else
void btif_gatt_check_encrypted_link(UNUSED_ATTR RawAddress bd_addr,
                                    UNUSED_ATTR tGATT_TRANSPORT
                                        transport_link) {}
#endif

void btif_gatt_move_track_adv_data(btgatt_track_adv_info_t* p_dest,
                                   btgatt_track_adv_info_t* p_src) {
  memset(p_dest, 0, sizeof(btgatt_track_adv_info_t));

  memcpy(p_dest, p_src, sizeof(btgatt_track_adv_info_t));

  if (p_src->adv_pkt_len > 0) {
    p_dest->p_adv_pkt_data = (uint8_t*)osi_malloc(p_src->adv_pkt_len);
    memcpy(p_dest->p_adv_pkt_data, p_src->p_adv_pkt_data, p_src->adv_pkt_len);
    osi_free_and_reset((void**)&p_src->p_adv_pkt_data);
  }

  if (p_src->scan_rsp_len > 0) {
    p_dest->p_scan_rsp_data = (uint8_t*)osi_malloc(p_src->scan_rsp_len);
    memcpy(p_dest->p_scan_rsp_data, p_src->p_scan_rsp_data,
           p_src->scan_rsp_len);
    osi_free_and_reset((void**)&p_src->p_scan_rsp_data);
  }
}