text: /*************************************************************************************************/
  /*!
   *  \file
   *
   *  \brief  LL HCI event module implementation file.
   *
   *  Copyright (c) 2013-2018 Arm Ltd.
   *
   *  Copyright (c) 2019 Packetcraft, Inc.
   *
   *  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 "lhci_int.h"
  #include "hci_defs.h"
  #include "ll_api.h"
  #include "wsf_msg.h"
  #include "util/bstream.h"
  #include <string.h>
  
  /*************************************************************************************************/
  /*!
   *  \brief  Pack a read local P-256 public key complete event packet.
   *
   *  \param  pBuf        Packed packet buffer.
   *  \param  pEvt        Read local P-256 public key indication data.
   *
   *  \return Packet length.
   */
  /*************************************************************************************************/
  static uint8_t lhciPackReadLocalP256PubKeyCmplEvt(uint8_t *pBuf, const LlReadLocalP256PubKeyInd_t *pEvt)
  {
    const uint8_t len = HCI_LEN_LE_READ_PUB_KEY_CMPL;
  
    UINT8_TO_BSTREAM (pBuf, HCI_LE_READ_LOCAL_P256_PUB_KEY_CMPL_EVT);
    UINT8_TO_BSTREAM (pBuf, LL_SUCCESS);
    memcpy(pBuf, pEvt->pubKey_x, sizeof(pEvt->pubKey_x));
    pBuf += sizeof(pEvt->pubKey_x);
    memcpy(pBuf, pEvt->pubKey_y, sizeof(pEvt->pubKey_y));
  
    return len;
  }
  
  /*************************************************************************************************/
  /*!
   *  \brief  Pack a generate Diffie-Hellman key complete event packet.
   *
   *  \param  pBuf        Packed packet buffer.
   *  \param  pEvt        Generate Diffie-Hellman key indication data.
   *
   *  \return Packet length.
   */
  /*************************************************************************************************/
  static uint8_t lhciPackGenerateDhKeyCmplEvt(uint8_t *pBuf, const LlGenerateDhKeyInd_t *pEvt)
  {
    const uint8_t len = HCI_LEN_LE_GEN_DHKEY_CMPL;
  
    UINT8_TO_BSTREAM (pBuf, HCI_LE_GENERATE_DHKEY_CMPL_EVT);
    UINT8_TO_BSTREAM (pBuf, pEvt->status);
    memcpy(pBuf, pEvt->dhKey, sizeof(pEvt->dhKey));
  
    return len;
  }
  
  /*************************************************************************************************/
  /*!
   *  \brief  LL secure connections data event handler.
   *
   *  \param  pEvt    Buffer containing LL event.
   *
   *  \return TRUE if event handled, FALSE otherwise.
   */
  /*************************************************************************************************/
  bool_t lhciScEncodeEvtPkt(LlEvt_t *pEvt)
  {
    uint8_t *pEvtBuf = NULL;
  
    switch (pEvt->hdr.event)
    {
      case LL_READ_LOCAL_P256_PUB_KEY_CMPL_IND:
        if ((lhciCb.leEvtMsk & ((uint64_t)(HCI_EVT_MASK_LE_READ_LOCAL_P256_PUB_KEY_CMPL) << LHCI_BYTE_TO_BITS(0))) &&
           (lhciCb.evtMsk & ((uint64_t)(HCI_EVT_MASK_LE_META) << LHCI_BYTE_TO_BITS(7))))
        {
          if ((pEvtBuf = lhciAllocEvt(HCI_LE_META_EVT, HCI_LEN_LE_READ_PUB_KEY_CMPL)) != NULL)
          {
            lhciPackReadLocalP256PubKeyCmplEvt(pEvtBuf, &pEvt->readLocalP256PubKeyInd);
          }
        }
        break;
      case LL_GENERATE_DHKEY_CMPL_IND:
        if ((lhciCb.leEvtMsk & ((uint64_t)(HCI_EVT_MASK_LE_GENERATE_DHKEY_CMPL) << LHCI_BYTE_TO_BITS(1))) &&
           (lhciCb.evtMsk & ((uint64_t)(HCI_EVT_MASK_LE_META) << LHCI_BYTE_TO_BITS(7))))
        {
          if ((pEvtBuf = lhciAllocEvt(HCI_LE_META_EVT, HCI_LEN_LE_GEN_DHKEY_CMPL)) != NULL)
          {
            lhciPackGenerateDhKeyCmplEvt(pEvtBuf, &pEvt->generateDhKeyInd);
          }
        }
        break;
  
      default:
        break;
    }
  
    if (pEvtBuf)
    {
      lhciSendEvt(pEvtBuf);
      return TRUE;
    }
  
    return FALSE;
  }
  