pdu_parser.h

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//
// Copyright (C) 2020 The Android Open Source Project
//
// 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.
 
#pragma once
 
#include <string>
 
namespace cuttlefish {
 
class PDUParser {
 public:
  explicit PDUParser(std::string &pdu);
  ~PDUParser() = default;
 
  bool IsValidPDU();
  bool IsNeededStatuReport();
  std::string CreatePDU();
  std::string CreateRemotePDU(std::string& host_port);
  std::string CreateStatuReport(int message_reference);
  std::string GetPhoneNumberFromAddress();
 
  static std::string BCDToString(std::string& data);
  static std::string StringToBCD(std::string_view data);
 
 private:
  bool DecodePDU(std::string& pdu);
  int Hex2ToByte(const std::string& hex);
  int HexCharToInt(char c);
  std::string IntToHexString(int value);
 
  // special handling for time zone difference (to GMT)
  std::string IntToHexStringTimeZoneDiff(int tzdiff_hour);
  std::string GetCurrentTimeStamp();
 
  bool is_valid_pdu_;
 
  // Ignore SMSC address, default to be "00" when create PDU
  std::string pdu_type_;
  std::string message_reference_;
  std::string originator_address_;
  std::string protocol_id_;
  std::string data_code_scheme_;
  std::string user_data_;
};
 
} // namespace cuttlefish