// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
// Mobius Forensic Toolkit
// Copyright (C) 2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018,2019 Eduardo Aguiar
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option) any later
// version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
// Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
#include <mobius/imagefile/imagefile.h>
#include <mobius/core/application.h>
#include <iostream>
#include <unistd.h>

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief show usage text
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
void
usage ()
{
  std::cerr << std::endl;
  std::cerr << "use: imagefile_cat [OPTIONS] <URL>" << std::endl;
  std::cerr << "e.g: imagefile_cat -t raw file://disk.raw" << std::endl;
  std::cerr << "     imagefile_cat file://disk.ewf" << std::endl;
  std::cerr << std::endl;
  std::cerr << "options are:" << std::endl;
  std::cerr << "  -t imagefile type\t\t" << std::endl;
  std::cerr << std::endl;
  std::cerr << "     type is:" << std::endl;
  std::cerr << "       autodetect\ttry to autodetect imagefile type (default)" << std::endl;

  for (const auto& i : mobius::imagefile::get_imagefile_types ())
    std::cerr << "       " << i.type << "\t\t" << i.description << std::endl;

  std::cerr << std::endl;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief main function
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
int
main (int argc, char **argv)
{
  mobius::core::application app;
  std::cerr << app.get_name () << " v" << app.get_version () << std::endl;
  std::cerr << app.get_copyright () << std::endl;
  std::cerr << "Imagefile Cat v1.0" << std::endl;
  std::cerr << "by Eduardo Aguiar" << std::endl;

  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  // parse command line
  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  int opt;
  std::string type = "autodetect";

  while ((opt = getopt (argc, argv, "ht:")) != EOF)
    {
      switch (opt)
        {
        case 'h':
          usage ();
          exit (EXIT_SUCCESS);
          break;

        case 't':
          type = optarg;
          break;

        default:
          usage ();
          exit (EXIT_FAILURE);
        }
    }

  if (optind >= argc)
    {
      std::cerr << std::endl;
      std::cerr << "Error: you must enter a valid URL to an imagefile" << std::endl;
      usage ();
      exit (EXIT_FAILURE);
    }

  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  // check if imagefile is available
  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  auto image = mobius::imagefile::new_imagefile_from_url (argv[optind], type);

  if (!image.is_available ())
    {
      std::cerr << std::endl;
      std::cerr << "Error: imagefile is not available" << std::endl;
      usage ();
      exit (EXIT_FAILURE);
    }

  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  // output imagefile data
  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  constexpr int BLOCK_SIZE = 65536;
  auto reader = image.new_reader ();
  auto data = reader.read (BLOCK_SIZE);

  while (!data.empty ())
    {
      std::cout.write (reinterpret_cast <const char *> (data.data ()), data.size ());
      data = reader.read (BLOCK_SIZE);
    }
}
