lokinet/llarp/router_contact_remote.cpp

#include "constants/version.hpp"
#include "crypto/crypto.hpp"
#include "net/net.hpp"
#include "router_contact.hpp"
#include "util/bencode.hpp"
#include "util/buffer.hpp"
#include "util/file.hpp"
#include "util/time.hpp"

#include <oxenc/bt_serialize.h>

namespace llarp
{
  RemoteRC::RemoteRC(oxenc::bt_dict_consumer btdc)
  {
    try
    {
      bt_load(btdc);
      bt_verify(btdc, /*reject_expired=*/true);
    }
    catch (const std::exception& e)
    {
      auto err = "Exception caught parsing RemoteRC: {}"_format(e.what());
      log::warning(logcat, err);
      throw std::runtime_error{err};
    }
  }

  bool
  RemoteRC::read(const fs::path& fname)
  {
    _payload.resize(MAX_RC_SIZE);

    try
    {
      auto nread = util::file_to_buffer(fname, _payload.data(), _payload.size());
      _payload.resize(nread);

      oxenc::bt_dict_consumer btdc{_payload};
      bt_load(btdc);
      bt_verify(btdc);
    }
    catch (const std::exception& e)
    {
      log::warning(logcat, "Failed to read or validate RC from {}: {}", fname, e.what());
      return false;
    }

    return true;
  }

  bool
  RemoteRC::verify() const
  {
    oxenc::bt_dict_consumer btdc{_payload};
    bt_verify(btdc);
    return true;
  }

}  // namespace llarp