key-locator.hpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
#ifndef NDN_KEY_LOCATOR_HPP
#define NDN_KEY_LOCATOR_HPP

#include "encoding/encoding-buffer.hpp"
#include "name.hpp"

namespace ndn {

class KeyLocator
{
public:
  class Error : public tlv::Error
  {
  public:
    explicit
    Error(const std::string& what)
      : tlv::Error(what)
    {
    }
  };

  enum Type {
    KeyLocator_None = 65535,
    KeyLocator_Name = 0,
    KeyLocator_KeyDigest = 1,
    KeyLocator_Unknown = 255
  };

public: // constructors
  KeyLocator();

  explicit
  KeyLocator(const Block& wire);

  KeyLocator(const Name& name);

public: // encode and decode
  template<encoding::Tag TAG>
  size_t
  wireEncode(EncodingImpl<TAG>& encoder) const;

  const Block&
  wireEncode() const;

  void
  wireDecode(const Block& wire);

public: // attributes
  bool
  empty() const
  {
    return m_type == KeyLocator_None;
  }

  Type
  getType() const
  {
    return m_type;
  }

  KeyLocator&
  clear();

  const Name&
  getName() const;

  KeyLocator&
  setName(const Name& name);

  const Block&
  getKeyDigest() const;

  KeyLocator&
  setKeyDigest(const Block& keyDigest);

  KeyLocator&
  setKeyDigest(const ConstBufferPtr& keyDigest);

public: // EqualityComparable concept
  bool
  operator==(const KeyLocator& other) const;

  bool
  operator!=(const KeyLocator& other) const
  {
    return !this->operator==(other);
  }

private:
  Type m_type;
  Name m_name;
  Block m_keyDigest;

  mutable Block m_wire;
};

} // namespace ndn

#endif // NDN_KEY_LOCATOR_HPP