mirror of
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810 lines
19 KiB
C++
810 lines
19 KiB
C++
#ifndef __CONNECTION_H__
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#define __CONNECTION_H__
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#include "../global.h"
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#include <string>
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#include <vector>
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#include <set>
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#include <list>
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#include <typeinfo> //XXX this is in namespace std if you want w/o use typeinfo.h?
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#include <boost/type_traits/is_fundamental.hpp>
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#include <boost/type_traits/is_enum.hpp>
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#include <boost/type_traits/is_pointer.hpp>
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#include <boost/type_traits/is_class.hpp>
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#include <boost/type_traits/is_base_of.hpp>
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#include <boost/type_traits/is_array.hpp>
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#include <boost/type_traits/remove_pointer.hpp>
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#include <boost/type_traits/remove_const.hpp>
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#include <boost/mpl/eval_if.hpp>
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#include <boost/mpl/equal_to.hpp>
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#include <boost/mpl/int.hpp>
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#include <boost/mpl/identity.hpp>
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const ui32 version = 719;
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class CConnection;
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class CGObjectInstance;
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class CGameState;
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namespace mpl = boost::mpl;
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/*
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* Connection.h, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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namespace boost
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{
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namespace asio
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{
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namespace ip
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{
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class tcp;
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}
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class io_service;
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template <typename Protocol> class stream_socket_service;
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template <typename Protocol,typename StreamSocketService>
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class basic_stream_socket;
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template <typename Protocol> class socket_acceptor_service;
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template <typename Protocol,typename SocketAcceptorService>
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class basic_socket_acceptor;
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}
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class mutex;
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};
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enum SerializationLvl
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{
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Wrong=0,
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Primitive,
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Array,
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Pointer,
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Serializable
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};
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struct TypeComparer
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{
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bool operator()(const std::type_info *a, const std::type_info *b) const
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{
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return a->before(*b);
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}
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};
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class DLL_EXPORT CTypeList
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{
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typedef std::multimap<const std::type_info *,ui16,TypeComparer> TTypeMap;
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TTypeMap types;
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public:
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CTypeList();
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ui16 registerType(const std::type_info *type);
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template <typename T> ui16 registerType(const T * t = NULL)
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{
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return registerType(getTypeInfo(t));
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}
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ui16 getTypeID(const std::type_info *type);
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template <typename T> ui16 getTypeID(const T * t)
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{
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return getTypeID(getTypeInfo(t));
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}
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template <typename T> const std::type_info * getTypeInfo(const T * t = NULL)
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{
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if(t)
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return &typeid(*t);
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else
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return &typeid(T);
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}
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};
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extern DLL_EXPORT CTypeList typeList;
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template<typename Ser,typename T>
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struct SavePrimitive
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{
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static void invoke(Ser &s, const T &data)
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{
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s.savePrimitive(data);
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}
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};
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template<typename Ser,typename T>
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struct SaveSerializable
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{
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static void invoke(Ser &s, const T &data)
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{
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s.saveSerializable(data);
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}
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};
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template<typename Ser,typename T>
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struct LoadPrimitive
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{
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static void invoke(Ser &s, T &data)
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{
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s.loadPrimitive(data);
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}
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};
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template<typename Ser,typename T>
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struct SavePointer
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{
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static void invoke(Ser &s, const T &data)
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{
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s.savePointer(data);
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}
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};
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template<typename Ser,typename T>
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struct LoadPointer
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{
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static void invoke(Ser &s, T &data)
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{
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s.loadPointer(data);
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}
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};
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template<typename Ser,typename T>
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struct SaveArray
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{
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static void invoke(Ser &s, const T &data)
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{
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s.saveArray(data);
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}
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};
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template<typename Ser,typename T>
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struct LoadArray
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{
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static void invoke(Ser &s, T &data)
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{
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s.loadArray(data);
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}
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};
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template<typename Ser,typename T>
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struct LoadSerializable
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{
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static void invoke(Ser &s, T &data)
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{
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s.loadSerializable(data);
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}
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};
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template<typename Ser,typename T>
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struct SaveWrong
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{
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static void invoke(Ser &s, const T &data)
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{
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throw std::string("Wrong save serialization call!");
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}
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};
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template<typename Ser,typename T>
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struct LoadWrong
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{
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static void invoke(Ser &s, const T &data)
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{
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throw std::string("Wrong load serialization call!");
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}
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};
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template<typename T>
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struct SerializationLevel
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{
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typedef mpl::integral_c_tag tag;
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typedef
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typename mpl::eval_if<
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boost::is_fundamental<T>,
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mpl::int_<Primitive>,
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//else
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typename mpl::eval_if<
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boost::is_class<T>,
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mpl::int_<Serializable>,
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//else
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typename mpl::eval_if<
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boost::is_array<T>,
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mpl::int_<Array>,
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//else
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typename mpl::eval_if<
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boost::is_pointer<T>,
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mpl::int_<Pointer>,
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//else
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typename mpl::eval_if<
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boost::is_enum<T>,
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mpl::int_<Primitive>,
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//else
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mpl::int_<Wrong>
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>
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>
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>
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>
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>::type type;
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static const int value = SerializationLevel::type::value;
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};
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class DLL_EXPORT CSerializerBase
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{
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public:
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};
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class DLL_EXPORT CSaverBase : public virtual CSerializerBase
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{
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};
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class CBasicPointerSaver
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{
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public:
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virtual void savePtr(CSaverBase &ar, const void *data) const =0;
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~CBasicPointerSaver(){}
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};
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template <typename Serializer, typename T> class CPointerSaver : public CBasicPointerSaver
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{
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public:
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void savePtr(CSaverBase &ar, const void *data) const
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{
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Serializer &s = static_cast<Serializer&>(ar);
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const T *ptr = static_cast<const T*>(data);
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//T is most derived known type, it's time to call actual serialize
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const_cast<T&>(*ptr).serialize(s,version);
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}
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};
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template <typename Serializer> class DLL_EXPORT COSer : public CSaverBase
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{
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public:
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bool saving;
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std::map<ui16,CBasicPointerSaver*> savers; // typeID => CPointerSaver<serializer,type>
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std::map<const void*, ui32> savedPointers;
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bool smartPointerSerialization;
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COSer()
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{
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saving=true;
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smartPointerSerialization = true;
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}
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~COSer()
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{
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std::map<ui16,CBasicPointerSaver*>::iterator iter;
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for(iter = savers.begin(); iter != savers.end(); iter++)
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delete iter->second;
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}
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template<typename T> void registerType(const T * t=NULL)
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{
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ui16 ID = typeList.registerType(t);
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savers[ID] = new CPointerSaver<COSer<Serializer>,T>;
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}
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Serializer * This()
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{
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return static_cast<Serializer*>(this);
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}
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template<class T>
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Serializer & operator<<(const T &t)
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{
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this->This()->save(t);
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return * this->This();
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}
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template<class T>
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COSer & operator&(const T & t)
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{
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return * this->This() << t;
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}
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int write(const void * data, unsigned size);
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template <typename T>
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void savePrimitive(const T &data)
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{
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this->This()->write(&data,sizeof(data));
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}
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template <typename T>
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void savePointer(const T &data)
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{
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//write if pointer is not NULL
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ui8 hlp = (data!=NULL);
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*this << hlp;
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//if pointer is NULL then we don't need anything more...
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if(!hlp)
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return;
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if(smartPointerSerialization)
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{
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std::map<const void*,ui32>::iterator i = savedPointers.find(data);
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if(i != savedPointers.end())
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{
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//this pointer has been already serialized - write only it's id
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*this << i->second;
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return;
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}
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//give id to this pointer
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ui32 pid = (ui32)savedPointers.size();
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savedPointers[data] = pid;
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*this << pid;
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}
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//write type identifier
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ui16 tid = typeList.getTypeID(data);
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*this << tid;
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This()->savePointerHlp(tid, data);
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}
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//that part of ptr serialization was extracted to allow customization of its behavior in derived classes
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template <typename T>
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void savePointerHlp(ui16 tid, const T &data)
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{
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if(!tid)
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*this << *data; //if type is unregistered simply write all data in a standard way
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else
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savers[tid]->savePtr(*this,data); //call serializer specific for our real type
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}
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template <typename T>
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void saveArray(const T &data)
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{
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ui32 size = ARRAY_COUNT(data);
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for(ui32 i=0; i < size; i++)
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*this << data[i];
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}
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template <typename T>
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void save(const T &data)
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{
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typedef
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//if
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typename mpl::eval_if< mpl::equal_to<SerializationLevel<T>,mpl::int_<Primitive> >,
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mpl::identity<SavePrimitive<Serializer,T> >,
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//else if
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typename mpl::eval_if<mpl::equal_to<SerializationLevel<T>,mpl::int_<Pointer> >,
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mpl::identity<SavePointer<Serializer,T> >,
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//else if
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typename mpl::eval_if<mpl::equal_to<SerializationLevel<T>,mpl::int_<Array> >,
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mpl::identity<SaveArray<Serializer,T> >,
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//else if
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typename mpl::eval_if<mpl::equal_to<SerializationLevel<T>,mpl::int_<Serializable> >,
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mpl::identity<SaveSerializable<Serializer,T> >,
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//else
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mpl::identity<SaveWrong<Serializer,T> >
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>
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>
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>
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>::type typex;
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typex::invoke(* this->This(), data);
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}
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template <typename T>
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void saveSerializable(const T &data)
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{
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const_cast<T&>(data).serialize(*this,version);
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}
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template <typename T>
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void saveSerializable(const std::vector<T> &data)
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{
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boost::uint32_t length = data.size();
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*this << length;
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for(ui32 i=0;i<length;i++)
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*this << data[i];
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}
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template <typename T>
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void saveSerializable(const std::set<T> &data)
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{
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std::set<T> &d = const_cast<std::set<T> &>(data);
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boost::uint32_t length = d.size();
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*this << length;
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for(typename std::set<T>::iterator i=d.begin();i!=d.end();i++)
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*this << *i;
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}
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template <typename T>
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void saveSerializable(const std::list<T> &data)
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{
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std::list<T> &d = const_cast<std::list<T> &>(data);
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boost::uint32_t length = d.size();
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*this << length;
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for(typename std::list<T>::iterator i=d.begin();i!=d.end();i++)
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*this << *i;
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}
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void saveSerializable(const std::string &data)
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{
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*this << ui32(data.length());
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this->This()->write(data.c_str(),data.size());
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}
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template <typename T1, typename T2>
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void saveSerializable(const std::pair<T1,T2> &data)
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{
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*this << data.first << data.second;
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}
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template <typename T1, typename T2>
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void saveSerializable(const std::map<T1,T2> &data)
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{
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*this << ui32(data.size());
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for(typename std::map<T1,T2>::const_iterator i=data.begin();i!=data.end();i++)
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*this << i->first << i->second;
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}
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};
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class DLL_EXPORT CLoaderBase : public virtual CSerializerBase
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{};
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class CBasicPointerLoader
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{
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public:
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virtual void loadPtr(CLoaderBase &ar, void *data) const =0; //data is pointer to the ACTUAL POINTER
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virtual ~CBasicPointerLoader(){}
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};
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template <typename Serializer, typename T> class CPointerLoader : public CBasicPointerLoader
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{
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public:
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void loadPtr(CLoaderBase &ar, void *data) const //data is pointer to the ACTUAL POINTER
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{
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Serializer &s = static_cast<Serializer&>(ar);
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T *&ptr = *static_cast<T**>(data);
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//create new object under pointer
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typedef typename boost::remove_pointer<T>::type npT;
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ptr = new npT;
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//T is most derived known type, it's time to call actual serialize
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ptr->serialize(s,version);
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}
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};
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template <typename Serializer> class DLL_EXPORT CISer : public CLoaderBase
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{
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public:
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bool saving;
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std::map<ui16,CBasicPointerLoader*> loaders; // typeID => CPointerSaver<serializer,type>
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ui32 myVersion;
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std::map<ui32, void*> loadedPointers;
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bool smartPointerSerialization;
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CISer()
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{
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saving = false;
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myVersion = version;
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smartPointerSerialization = true;
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}
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~CISer()
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{
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std::map<ui16,CBasicPointerLoader*>::iterator iter;
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for(iter = loaders.begin(); iter != loaders.end(); iter++)
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delete iter->second;
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}
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template<typename T> void registerType(const T * t=NULL)
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{
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ui16 ID = typeList.registerType(t);
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loaders[ID] = new CPointerLoader<CISer<Serializer>,T>;
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}
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Serializer * This()
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{
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return static_cast<Serializer*>(this);
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}
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template<class T>
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Serializer & operator>>(T &t)
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{
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this->This()->load(t);
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return * this->This();
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}
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template<class T>
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CISer & operator&(T & t)
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{
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return * this->This() >> t;
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}
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int write(const void * data, unsigned size);
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template <typename T>
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void load(T &data)
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{
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typedef
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//if
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typename mpl::eval_if< mpl::equal_to<SerializationLevel<T>,mpl::int_<Primitive> >,
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mpl::identity<LoadPrimitive<Serializer,T> >,
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//else if
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typename mpl::eval_if<mpl::equal_to<SerializationLevel<T>,mpl::int_<Pointer> >,
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mpl::identity<LoadPointer<Serializer,T> >,
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//else if
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typename mpl::eval_if<mpl::equal_to<SerializationLevel<T>,mpl::int_<Array> >,
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mpl::identity<LoadArray<Serializer,T> >,
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//else if
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typename mpl::eval_if<mpl::equal_to<SerializationLevel<T>,mpl::int_<Serializable> >,
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mpl::identity<LoadSerializable<Serializer,T> >,
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//else
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mpl::identity<LoadWrong<Serializer,T> >
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>
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>
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>
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>::type typex;
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typex::invoke(* this->This(), data);
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}
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template <typename T>
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void loadPrimitive(T &data)
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{
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this->This()->read(&data,sizeof(data));
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}
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template <typename T>
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void loadSerializable(T &data)
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{
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////that const cast is evil because it allows to implicitly overwrite const objects when deserializing
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typedef typename boost::remove_const<T>::type nonConstT;
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nonConstT &hlp = const_cast<nonConstT&>(data);
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hlp.serialize(*this,myVersion);
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//data.serialize(*this,myVersion);
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}
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template <typename T>
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void loadArray(T &data)
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{
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ui32 size = ARRAY_COUNT(data);
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for(ui32 i=0; i < size; i++)
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*this >> data[i];
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}
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template <typename T>
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void loadPointer(T &data)
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{
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ui8 hlp;
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*this >> hlp;
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if(!hlp)
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{
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data = NULL;
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return;
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}
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ui32 pid = -1; //pointer id (or maybe rather pointee id)
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std::map<ui32, void*>::iterator i = loadedPointers.end();
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if(smartPointerSerialization)
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{
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*this >> pid; //get the id
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i = loadedPointers.find(pid); //lookup
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|
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if(i != loadedPointers.end())
|
|
{
|
|
//we already got this pointer
|
|
data = static_cast<T>(i->second);
|
|
return;
|
|
}
|
|
}
|
|
|
|
//get type id
|
|
ui16 tid;
|
|
*this >> tid;
|
|
This()->loadPointerHlp(tid, data);
|
|
|
|
if(smartPointerSerialization && i == loadedPointers.end())
|
|
loadedPointers[pid] = (void*)data; //add loaded pointer to our lookup map; cast is to avoid errors with const T* pt
|
|
}
|
|
|
|
//that part of ptr deserialization was extracted to allow customization of its behavior in derived classes
|
|
template <typename T>
|
|
void loadPointerHlp( ui16 tid, T & data )
|
|
{
|
|
if(!tid)
|
|
{
|
|
typedef typename boost::remove_pointer<T>::type npT;
|
|
typedef typename boost::remove_const<npT>::type ncpT;
|
|
data = new ncpT;
|
|
*this >> *data;
|
|
}
|
|
else
|
|
{
|
|
loaders[tid]->loadPtr(*this,&data);
|
|
}
|
|
}
|
|
|
|
template <typename T>
|
|
void loadSerializable(std::vector<T> &data)
|
|
{
|
|
boost::uint32_t length;
|
|
*this >> length;
|
|
data.resize(length);
|
|
for(ui32 i=0;i<length;i++)
|
|
*this >> data[i];
|
|
}
|
|
template <typename T>
|
|
void loadSerializable(std::set<T> &data)
|
|
{
|
|
boost::uint32_t length;
|
|
*this >> length;
|
|
T ins;
|
|
for(ui32 i=0;i<length;i++)
|
|
{
|
|
*this >> ins;
|
|
data.insert(ins);
|
|
}
|
|
}
|
|
template <typename T>
|
|
void loadSerializable(std::list<T> &data)
|
|
{
|
|
boost::uint32_t length;
|
|
*this >> length;
|
|
T ins;
|
|
for(ui32 i=0;i<length;i++)
|
|
{
|
|
*this >> ins;
|
|
data.push_back(ins);
|
|
}
|
|
}
|
|
template <typename T1, typename T2>
|
|
void loadSerializable(std::pair<T1,T2> &data)
|
|
{
|
|
*this >> data.first >> data.second;
|
|
}
|
|
|
|
template <typename T1, typename T2>
|
|
void loadSerializable(std::map<T1,T2> &data)
|
|
{
|
|
ui32 length;
|
|
*this >> length;
|
|
T1 t;
|
|
for(ui32 i=0;i<length;i++)
|
|
{
|
|
*this >> t;
|
|
*this >> data[t];
|
|
}
|
|
}
|
|
void loadSerializable(std::string &data)
|
|
{
|
|
ui32 length;
|
|
*this >> length;
|
|
data.resize(length);
|
|
this->This()->read((void*)data.c_str(),length);
|
|
}
|
|
|
|
};
|
|
|
|
|
|
class DLL_EXPORT CSaveFile
|
|
: public COSer<CSaveFile>
|
|
{
|
|
void dummyMagicFunction()
|
|
{
|
|
*this << std::string("This function makes stuff working.");
|
|
}
|
|
public:
|
|
std::ofstream *sfile;
|
|
CSaveFile(const std::string &fname);
|
|
~CSaveFile();
|
|
int write(const void * data, unsigned size);
|
|
|
|
void close();
|
|
void openNextFile(const std::string &fname);
|
|
};
|
|
|
|
class DLL_EXPORT CLoadFile
|
|
: public CISer<CLoadFile>
|
|
{
|
|
void dummyMagicFunction()
|
|
{
|
|
std::string dummy = "This function makes stuff working.";
|
|
*this >> dummy;
|
|
}
|
|
public:
|
|
std::ifstream *sfile;
|
|
CLoadFile(const std::string &fname, bool requireLatest = true);
|
|
~CLoadFile();
|
|
int read(const void * data, unsigned size);
|
|
|
|
void close();
|
|
void openNextFile(const std::string &fname, bool requireLatest);
|
|
};
|
|
|
|
class DLL_EXPORT CConnection
|
|
:public CISer<CConnection>, public COSer<CConnection>
|
|
{
|
|
CGameState *gs;
|
|
CConnection(void);
|
|
|
|
void init();
|
|
public:
|
|
boost::mutex *rmx, *wmx; // read/write mutexes
|
|
boost::asio::basic_stream_socket < boost::asio::ip::tcp , boost::asio::stream_socket_service<boost::asio::ip::tcp> > * socket;
|
|
bool logging;
|
|
bool connected;
|
|
bool myEndianess, contactEndianess; //true if little endian, if ednianess is different we'll have to revert recieved multi-byte vars
|
|
boost::asio::io_service *io_service;
|
|
std::string name; //who uses this connection
|
|
|
|
CConnection
|
|
(std::string host, std::string port, std::string Name);
|
|
CConnection
|
|
(boost::asio::basic_socket_acceptor<boost::asio::ip::tcp, boost::asio::socket_acceptor_service<boost::asio::ip::tcp> > * acceptor,
|
|
boost::asio::io_service *Io_service, std::string Name);
|
|
CConnection
|
|
(boost::asio::basic_stream_socket < boost::asio::ip::tcp , boost::asio::stream_socket_service<boost::asio::ip::tcp> > * Socket,
|
|
std::string Name); //use immediately after accepting connection into socket
|
|
int write(const void * data, unsigned size);
|
|
int read(void * data, unsigned size);
|
|
void close();
|
|
bool isOpen() const;
|
|
template<class T>
|
|
CConnection &operator&(const T&);
|
|
~CConnection(void);
|
|
void setGS(CGameState *state);
|
|
|
|
CGObjectInstance *loadObject(); //reads id from net and returns that obj
|
|
void saveObject(const CGObjectInstance *data);
|
|
|
|
|
|
template<typename T>
|
|
struct loadObjectHelper
|
|
{
|
|
static void invoke(CConnection &s, T &data, ui16 tid)
|
|
{
|
|
data = static_cast<T>(s.loadObject());
|
|
}
|
|
};
|
|
template<typename T>
|
|
struct loadRestHelper
|
|
{
|
|
static void invoke(CConnection &s, T &data, ui16 tid)
|
|
{
|
|
s.CISer<CConnection>::loadPointerHlp(tid, data);
|
|
}
|
|
};
|
|
template<typename T>
|
|
struct saveObjectHelper
|
|
{
|
|
static void invoke(CConnection &s, const T &data, ui16 tid)
|
|
{
|
|
//CGObjectInstance *&hlp = const_cast<CGObjectInstance*&>(data); //for loading pointer to const obj we must remove the qualifier
|
|
s.saveObject(data);
|
|
}
|
|
};
|
|
template<typename T>
|
|
struct saveRestHelper
|
|
{
|
|
static void invoke(CConnection &s, const T &data, ui16 tid)
|
|
{
|
|
s.COSer<CConnection>::savePointerHlp(tid, data);
|
|
}
|
|
};
|
|
|
|
|
|
//"overload" loading pointer procedure
|
|
template <typename T>
|
|
void loadPointerHlp( ui16 tid, T & data )
|
|
{
|
|
typedef typename
|
|
//if
|
|
mpl::eval_if< boost::is_base_of<CGObjectInstance, typename boost::remove_pointer<T>::type>,
|
|
mpl::identity<loadObjectHelper<T> >,
|
|
//else
|
|
mpl::identity<loadRestHelper<T> >
|
|
>::type typex;
|
|
typex::invoke(*this, data, tid);
|
|
}
|
|
|
|
//"overload" saving pointer procedure
|
|
template <typename T>
|
|
void savePointerHlp( ui16 tid, const T & data )
|
|
{
|
|
typedef typename
|
|
//if
|
|
mpl::eval_if< boost::is_base_of<CGObjectInstance, typename boost::remove_pointer<T>::type>,
|
|
mpl::identity<saveObjectHelper<T> >,
|
|
//else
|
|
mpl::identity<saveRestHelper<T> >
|
|
>::type typex;
|
|
typex::invoke(*this, data, tid);
|
|
}
|
|
};
|
|
|
|
#endif // __CONNECTION_H__
|