text: /*
   * Copyright (C) 2011-2020 Intel Corporation. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   *   * Redistributions of source code must retain the above copyright
   *     notice, this list of conditions and the following disclaimer.
   *   * Redistributions in binary form must reproduce the above copyright
   *     notice, this list of conditions and the following disclaimer in
   *     the documentation and/or other materials provided with the
   *     distribution.
   *   * Neither the name of Intel Corporation nor the names of its
   *     contributors may be used to endorse or promote products derived
   *     from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   */
  
  const ref = require("ref-napi");
  const ffi = require('ffi-napi');
  const Struct = require('ref-struct-napi');
  const refArray = require('ref-array-napi');
  const path = require('path');
  
  const intPtr = ref.refType('int');
  const StringArray = refArray('string');
  const ByteArray = refArray('byte', 16);
  const cpu_svn_t = Struct({
    'bytes': ByteArray 
  });
  const cpu_svn_ptr = ref.refType(cpu_svn_t);
  
  exports.pck_cert_select = function(cpu_svn, pce_svn, pce_id, tcb_info, pem_certs, ncerts){
  	let dllpath = 'PCKCertSelectionLib.dll';
  	if (process.platform === "linux") {
  		dllpath = path.join(__dirname , '../lib/libPCKCertSelection.so');
  	}
      let pcklib = ffi.Library(dllpath,
          {'pck_cert_select': [ 'int', [ cpu_svn_ptr, 'uint16', 'uint16', 'string', StringArray, 'uint32', intPtr]]});
      var my_cpu_svn = new cpu_svn_t;
      var buf = Buffer.from(cpu_svn, 'hex');
      my_cpu_svn.bytes = new ByteArray;
      for (let i = 0; i < buf.length; i++)
          my_cpu_svn.bytes[i] = buf[i];
  
      var my_pce_svn = Buffer.from(pce_svn, 'hex').readInt16LE();
      var my_pce_id = Buffer.from(pce_id, 'hex').readInt16LE();
      var best_index_ptr = ref.alloc('int');
      let ret = pcklib.pck_cert_select(my_cpu_svn.ref(), my_pce_svn, my_pce_id, tcb_info, pem_certs, ncerts, best_index_ptr);
      if (ret == 0) {
          var best_index = best_index_ptr.deref();
          return best_index;
      }
      else {
          return -1;
      }
  }
  