feat(Core/Packets): Port packet handling from TrinityCore (#5617)

* feat(Core/Packets): Port packet handling from TrinityCore

* 1

* 2

* 3

* 1

* 2

* #3670

* 3

* 1

* codestyle

* fix msvc warnings
This commit is contained in:
Kargatum
2021-05-22 05:10:46 +07:00
committed by GitHub
parent 537ebe87aa
commit 63a273507c
29 changed files with 2768 additions and 1868 deletions

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/*
* Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license, you may redistribute it and/or modify it under version 2 of the License, or (at your option), any later version.
* Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
* Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
*/
#include "ByteBuffer.h"
#include "Common.h"
#include "Log.h"
#include <ace/Stack_Trace.h>
#include <sstream>
ByteBufferPositionException::ByteBufferPositionException(bool add, size_t pos,
size_t size, size_t valueSize)
{
std::ostringstream ss;
ss << "Attempted to " << (add ? "put" : "get") << " value with size: "
<< valueSize << " in ByteBuffer (pos: " << pos << " size: " << size
<< ")";
message().assign(ss.str());
}
ByteBufferSourceException::ByteBufferSourceException(size_t pos, size_t size,
size_t valueSize)
{
std::ostringstream ss;
ss << "Attempted to put a "
<< (valueSize > 0 ? "NULL-pointer" : "zero-sized value")
<< " in ByteBuffer (pos: " << pos << " size: " << size << ")";
message().assign(ss.str());
}
void ByteBuffer::hexlike(bool outString) const
{
if (!outString)
return;
uint32 j = 1, k = 1;
std::ostringstream o;
o << "STORAGE_SIZE: " << size() << "\nCONTENTS:\n";
for (uint32 i = 0; i < size(); ++i)
{
char buf[3];
snprintf(buf, 3, "%02X", read<uint8>(i));
if ((i == (j * 8)) && ((i != (k * 16))))
{
o << "| ";
++j;
}
else if (i == (k * 16))
{
o << "\n";
++k;
++j;
}
o << buf << " ";
}
o << " ";
LOG_INFO("server", "%s", o.str().c_str());
}

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/*
* Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license, you may redistribute it and/or modify it under version 2 of the License, or (at your option), any later version.
* Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
* Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
*/
#ifndef _BYTEBUFFER_H
#define _BYTEBUFFER_H
#include "Common.h"
#include "Errors.h"
#include "Util.h"
#include "ByteConverter.h"
#include <exception>
#include <list>
#include <map>
#include <string>
#include <vector>
#include <cstring>
#include <array>
// Root of ByteBuffer exception hierarchy
class ByteBufferException : public std::exception
{
public:
~ByteBufferException() noexcept override = default;
[[nodiscard]] char const* what() const noexcept override { return msg_.c_str(); }
protected:
std::string& message() noexcept { return msg_; }
private:
std::string msg_;
};
class ByteBufferPositionException : public ByteBufferException
{
public:
ByteBufferPositionException(bool add, size_t pos, size_t size, size_t valueSize);
~ByteBufferPositionException() noexcept override = default;
};
class ByteBufferSourceException : public ByteBufferException
{
public:
ByteBufferSourceException(size_t pos, size_t size, size_t valueSize);
~ByteBufferSourceException() noexcept override = default;
};
class ByteBuffer
{
public:
const static size_t DEFAULT_SIZE = 0x1000;
// constructor
ByteBuffer()
{
_storage.reserve(DEFAULT_SIZE);
}
ByteBuffer(size_t reserve) : _rpos(0), _wpos(0)
{
_storage.reserve(reserve);
}
// copy constructor
ByteBuffer(const ByteBuffer& buf) : _rpos(buf._rpos), _wpos(buf._wpos),
_storage(buf._storage)
{
}
/* requried as of C++ 11 */
#if __cplusplus >= 201103L
ByteBuffer(ByteBuffer&&) = default;
ByteBuffer& operator=(const ByteBuffer&) = default;
ByteBuffer& operator=(ByteBuffer&&) = default;
#endif
void clear()
{
_storage.clear();
_rpos = _wpos = 0;
}
template <typename T> void append(T value)
{
EndianConvert(value);
append((uint8*)&value, sizeof(value));
}
template <typename T> void put(size_t pos, T value)
{
EndianConvert(value);
put(pos, (uint8*)&value, sizeof(value));
}
ByteBuffer& operator<<(uint8 value)
{
append<uint8>(value);
return *this;
}
ByteBuffer& operator<<(uint16 value)
{
append<uint16>(value);
return *this;
}
ByteBuffer& operator<<(uint32 value)
{
append<uint32>(value);
return *this;
}
ByteBuffer& operator<<(uint64 value)
{
append<uint64>(value);
return *this;
}
// signed as in 2e complement
ByteBuffer& operator<<(int8 value)
{
append<int8>(value);
return *this;
}
ByteBuffer& operator<<(int16 value)
{
append<int16>(value);
return *this;
}
ByteBuffer& operator<<(int32 value)
{
append<int32>(value);
return *this;
}
ByteBuffer& operator<<(int64 value)
{
append<int64>(value);
return *this;
}
// floating points
ByteBuffer& operator<<(float value)
{
append<float>(value);
return *this;
}
ByteBuffer& operator<<(double value)
{
append<double>(value);
return *this;
}
ByteBuffer& operator<<(const std::string& value)
{
if (size_t len = value.length())
append((uint8 const*)value.c_str(), len);
append((uint8)0);
return *this;
}
ByteBuffer& operator<<(const char* str)
{
if (size_t len = (str ? strlen(str) : 0))
append((uint8 const*)str, len);
append((uint8)0);
return *this;
}
ByteBuffer& operator>>(bool& value)
{
value = (read<char>() > 0);
return *this;
}
ByteBuffer& operator>>(uint8& value)
{
value = read<uint8>();
return *this;
}
ByteBuffer& operator>>(uint16& value)
{
value = read<uint16>();
return *this;
}
ByteBuffer& operator>>(uint32& value)
{
value = read<uint32>();
return *this;
}
ByteBuffer& operator>>(uint64& value)
{
value = read<uint64>();
return *this;
}
//signed as in 2e complement
ByteBuffer& operator>>(int8& value)
{
value = read<int8>();
return *this;
}
ByteBuffer& operator>>(int16& value)
{
value = read<int16>();
return *this;
}
ByteBuffer& operator>>(int32& value)
{
value = read<int32>();
return *this;
}
ByteBuffer& operator>>(int64& value)
{
value = read<int64>();
return *this;
}
ByteBuffer& operator>>(float& value)
{
value = read<float>();
if (!myisfinite(value))
{
value = 0.0f;
//throw ByteBufferException();
}
return *this;
}
ByteBuffer& operator>>(double& value)
{
value = read<double>();
if (!myisfinite(value))
{
value = 0.0f;
//throw ByteBufferException();
}
return *this;
}
ByteBuffer& operator>>(std::string& value)
{
value.clear();
while (rpos() < size()) // prevent crash at wrong string format in packet
{
char c = read<char>();
if (c == 0)
break;
value += c;
}
return *this;
}
uint8& operator[](size_t const pos)
{
if (pos >= size())
throw ByteBufferPositionException(false, pos, 1, size());
return _storage[pos];
}
uint8 const& operator[](size_t const pos) const
{
if (pos >= size())
throw ByteBufferPositionException(false, pos, 1, size());
return _storage[pos];
}
[[nodiscard]] size_t rpos() const { return _rpos; }
size_t rpos(size_t rpos_)
{
_rpos = rpos_;
return _rpos;
}
void rfinish()
{
_rpos = wpos();
}
[[nodiscard]] size_t wpos() const { return _wpos; }
size_t wpos(size_t wpos_)
{
_wpos = wpos_;
return _wpos;
}
template<typename T>
void read_skip() { read_skip(sizeof(T)); }
void read_skip(size_t skip)
{
if (_rpos + skip > size())
throw ByteBufferPositionException(false, _rpos, skip, size());
_rpos += skip;
}
template <typename T> T read()
{
T r = read<T>(_rpos);
_rpos += sizeof(T);
return r;
}
template <typename T> [[nodiscard]] [[nodiscard]] [[nodiscard]] [[nodiscard]] [[nodiscard]] [[nodiscard]] [[nodiscard]] [[nodiscard]] [[nodiscard]] [[nodiscard]] [[nodiscard]] T read(size_t pos) const
{
if (pos + sizeof(T) > size())
throw ByteBufferPositionException(false, pos, sizeof(T), size());
T val = *((T const*)&_storage[pos]);
EndianConvert(val);
return val;
}
void read(uint8* dest, size_t len)
{
if (_rpos + len > size())
throw ByteBufferPositionException(false, _rpos, len, size());
std::memcpy(dest, &_storage[_rpos], len);
_rpos += len;
}
template<size_t Size>
void read(std::array<uint8, Size>& arr)
{
read(arr.data(), Size);
}
void readPackGUID(uint64& guid)
{
if (rpos() + 1 > size())
throw ByteBufferPositionException(false, _rpos, 1, size());
guid = 0;
uint8 guidmark = 0;
(*this) >> guidmark;
for (int i = 0; i < 8; ++i)
{
if (guidmark & (uint8(1) << i))
{
if (rpos() + 1 > size())
throw ByteBufferPositionException(false, _rpos, 1, size());
uint8 bit;
(*this) >> bit;
guid |= (uint64(bit) << (i * 8));
}
}
}
uint32 ReadPackedTime()
{
uint32 packedDate = read<uint32>();
tm lt = tm();
lt.tm_min = packedDate & 0x3F;
lt.tm_hour = (packedDate >> 6) & 0x1F;
//lt.tm_wday = (packedDate >> 11) & 7;
lt.tm_mday = ((packedDate >> 14) & 0x3F) + 1;
lt.tm_mon = (packedDate >> 20) & 0xF;
lt.tm_year = ((packedDate >> 24) & 0x1F) + 100;
return uint32(mktime(&lt));
}
ByteBuffer& ReadPackedTime(uint32& time)
{
time = ReadPackedTime();
return *this;
}
uint8* contents()
{
if (_storage.empty())
throw ByteBufferException();
return &_storage[0];
}
[[nodiscard]] const uint8* contents() const
{
if (_storage.empty())
throw ByteBufferException();
return &_storage[0];
}
[[nodiscard]] size_t size() const { return _storage.size(); }
[[nodiscard]] bool empty() const { return _storage.empty(); }
void resize(size_t newsize)
{
_storage.resize(newsize, 0);
_rpos = 0;
_wpos = size();
}
void reserve(size_t ressize)
{
if (ressize > size())
_storage.reserve(ressize);
}
void append(const char* src, size_t cnt)
{
return append((const uint8*)src, cnt);
}
template<class T> void append(const T* src, size_t cnt)
{
return append((const uint8*)src, cnt * sizeof(T));
}
void append(const uint8* src, size_t cnt)
{
if (!cnt)
throw ByteBufferSourceException(_wpos, size(), cnt);
if (!src)
throw ByteBufferSourceException(_wpos, size(), cnt);
ASSERT(size() < 10000000);
size_t newsize = _wpos + cnt;
if (_storage.capacity() < newsize) // pussywizard
{
if (newsize < 100)
_storage.reserve(300);
else if (newsize < 750)
_storage.reserve(2500);
else if (newsize < 6000)
_storage.reserve(10000);
else
_storage.reserve(400000);
}
if (_storage.size() < newsize)
_storage.resize(newsize);
memcpy(&_storage[_wpos], src, cnt);
_wpos = newsize;
}
void append(const ByteBuffer& buffer)
{
if (buffer.wpos())
append(buffer.contents(), buffer.wpos());
}
template<size_t Size>
void append(std::array<uint8, Size> const& arr)
{
append(arr.data(), Size);
}
// can be used in SMSG_MONSTER_MOVE opcode
void appendPackXYZ(float x, float y, float z)
{
uint32 packed = 0;
packed |= ((int)(x / 0.25f) & 0x7FF);
packed |= ((int)(y / 0.25f) & 0x7FF) << 11;
packed |= ((int)(z / 0.25f) & 0x3FF) << 22;
*this << packed;
}
void appendPackGUID(uint64 guid)
{
uint8 packGUID[8 + 1];
packGUID[0] = 0;
size_t size = 1;
for (uint8 i = 0; guid != 0; ++i)
{
if (guid & 0xFF)
{
packGUID[0] |= uint8(1 << i);
packGUID[size] = uint8(guid & 0xFF);
++size;
}
guid >>= 8;
}
append(packGUID, size);
}
void AppendPackedTime(time_t time)
{
tm lt;
localtime_r(&time, &lt);
append<uint32>((lt.tm_year - 100) << 24 | lt.tm_mon << 20 | (lt.tm_mday - 1) << 14 | lt.tm_wday << 11 | lt.tm_hour << 6 | lt.tm_min);
}
void put(size_t pos, const uint8* src, size_t cnt)
{
if (pos + cnt > size())
throw ByteBufferPositionException(true, pos, cnt, size());
if (!src)
throw ByteBufferSourceException(_wpos, size(), cnt);
std::memcpy(&_storage[pos], src, cnt);
}
void hexlike(bool outString = false) const;
protected:
size_t _rpos{0}, _wpos{0};
std::vector<uint8> _storage;
};
template <typename T>
inline ByteBuffer& operator<<(ByteBuffer& b, std::vector<T> v)
{
b << (uint32)v.size();
for (typename std::vector<T>::iterator i = v.begin(); i != v.end(); ++i)
{
b << *i;
}
return b;
}
template <typename T>
inline ByteBuffer& operator>>(ByteBuffer& b, std::vector<T>& v)
{
uint32 vsize;
b >> vsize;
v.clear();
while (vsize--)
{
T t;
b >> t;
v.push_back(t);
}
return b;
}
template <typename T>
inline ByteBuffer& operator<<(ByteBuffer& b, std::list<T> v)
{
b << (uint32)v.size();
for (typename std::list<T>::iterator i = v.begin(); i != v.end(); ++i)
{
b << *i;
}
return b;
}
template <typename T>
inline ByteBuffer& operator>>(ByteBuffer& b, std::list<T>& v)
{
uint32 vsize;
b >> vsize;
v.clear();
while (vsize--)
{
T t;
b >> t;
v.push_back(t);
}
return b;
}
template <typename K, typename V>
inline ByteBuffer& operator<<(ByteBuffer& b, std::map<K, V>& m)
{
b << (uint32)m.size();
for (typename std::map<K, V>::iterator i = m.begin(); i != m.end(); ++i)
{
b << i->first << i->second;
}
return b;
}
template <typename K, typename V>
inline ByteBuffer& operator>>(ByteBuffer& b, std::map<K, V>& m)
{
uint32 msize;
b >> msize;
m.clear();
while (msize--)
{
K k;
V v;
b >> k >> v;
m.insert(make_pair(k, v));
}
return b;
}
/// @todo Make a ByteBuffer.cpp and move all this inlining to it.
template<> inline std::string ByteBuffer::read<std::string>()
{
std::string tmp;
*this >> tmp;
return tmp;
}
template<>
inline void ByteBuffer::read_skip<char*>()
{
std::string temp;
*this >> temp;
}
template<>
inline void ByteBuffer::read_skip<char const*>()
{
read_skip<char*>();
}
template<>
inline void ByteBuffer::read_skip<std::string>()
{
read_skip<char*>();
}
#endif

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/*
* Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license, you may redistribute it and/or modify it under version 2 of the License, or (at your option), any later version.
* Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
* Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
*/
#ifndef AZEROTHCORE_WORLDPACKET_H
#define AZEROTHCORE_WORLDPACKET_H
#include "Common.h"
#include "ByteBuffer.h"
#include "Duration.h"
class WorldPacket : public ByteBuffer
{
public:
// just container for later use
WorldPacket() : ByteBuffer(0)
{
}
explicit WorldPacket(uint16 opcode, size_t res = 200) : ByteBuffer(res), m_opcode(opcode) { }
WorldPacket(WorldPacket&& packet, TimePoint receivedTime) : ByteBuffer(std::move(packet)), m_opcode(packet.m_opcode), m_receivedTime(receivedTime)
{
}
// copy constructor
WorldPacket(const WorldPacket& packet) : ByteBuffer(packet), m_opcode(packet.m_opcode)
{
}
/* requried as of C++ 11 */
#if __cplusplus >= 201103L
WorldPacket(WorldPacket&&) = default;
WorldPacket& operator=(const WorldPacket&) = default;
WorldPacket& operator=(WorldPacket&&) = default;
#endif
void Initialize(uint16 opcode, size_t newres = 200)
{
clear();
_storage.reserve(newres);
m_opcode = opcode;
}
[[nodiscard]] uint16 GetOpcode() const { return m_opcode; }
void SetOpcode(uint16 opcode) { m_opcode = opcode; }
[[nodiscard]] TimePoint GetReceivedTime() const { return m_receivedTime; }
protected:
uint16 m_opcode{0};
TimePoint m_receivedTime; // only set for a specific set of opcodes, for performance reasons.
};
#endif

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/*
* Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU AGPL v3 license: https://github.com/azerothcore/azerothcore-wotlk/blob/master/LICENSE-AGPL3
* Copyright (C) 2021+ WarheadCore <https://github.com/WarheadCore>
*/
#ifndef __MESSAGEBUFFER_H_
#define __MESSAGEBUFFER_H_
#include "Define.h"
#include <vector>
#include <cstring>
class MessageBuffer
{
using size_type = std::vector<uint8>::size_type;
public:
MessageBuffer() : _wpos(0), _rpos(0), _storage()
{
_storage.resize(4096);
}
explicit MessageBuffer(std::size_t initialSize) : _wpos(0), _rpos(0), _storage()
{
_storage.resize(initialSize);
}
MessageBuffer(MessageBuffer const& right) :
_wpos(right._wpos), _rpos(right._rpos), _storage(right._storage) { }
MessageBuffer(MessageBuffer&& right) noexcept :
_wpos(right._wpos), _rpos(right._rpos), _storage(right.Move()) { }
void Reset()
{
_wpos = 0;
_rpos = 0;
}
void Resize(size_type bytes)
{
_storage.resize(bytes);
}
uint8* GetBasePointer() { return _storage.data(); }
uint8* GetReadPointer() { return GetBasePointer() + _rpos; }
uint8* GetWritePointer() { return GetBasePointer() + _wpos; }
void ReadCompleted(size_type bytes) { _rpos += bytes; }
void WriteCompleted(size_type bytes) { _wpos += bytes; }
[[nodiscard]] size_type GetActiveSize() const { return _wpos - _rpos; }
[[nodiscard]] size_type GetRemainingSpace() const { return _storage.size() - _wpos; }
[[nodiscard]] size_type GetBufferSize() const { return _storage.size(); }
// Discards inactive data
void Normalize()
{
if (_rpos)
{
if (_rpos != _wpos)
{
memmove(GetBasePointer(), GetReadPointer(), GetActiveSize());
}
_wpos -= _rpos;
_rpos = 0;
}
}
// Ensures there's "some" free space, make sure to call Normalize() before this
void EnsureFreeSpace()
{
// resize buffer if it's already full
if (GetRemainingSpace() == 0)
{
_storage.resize(_storage.size() * 3 / 2);
}
}
void Write(void const* data, std::size_t size)
{
if (size)
{
memcpy(GetWritePointer(), data, size);
WriteCompleted(size);
}
}
std::vector<uint8>&& Move()
{
_wpos = 0;
_rpos = 0;
return std::move(_storage);
}
MessageBuffer& operator=(MessageBuffer const& right)
{
if (this != &right)
{
_wpos = right._wpos;
_rpos = right._rpos;
_storage = right._storage;
}
return *this;
}
MessageBuffer& operator=(MessageBuffer&& right) noexcept
{
if (this != &right)
{
_wpos = right._wpos;
_rpos = right._rpos;
_storage = right.Move();
}
return *this;
}
private:
size_type _wpos;
size_type _rpos;
std::vector<uint8> _storage;
};
#endif /* __MESSAGEBUFFER_H_ */

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/*
* Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU AGPL v3 license: https://github.com/azerothcore/azerothcore-wotlk/blob/master/LICENSE-AGPL3
* Copyright (C) 2021+ WarheadCore <https://github.com/WarheadCore>
*/
#ifndef Tuples_h__
#define Tuples_h__
#include <tuple>
namespace acore
{
template <typename T, typename Tuple>
struct has_type;
template <typename T, typename... Us>
struct has_type<T, std::tuple<Us...>> : std::disjunction<std::is_same<T, Us>...>
{
};
template <typename T, typename... Us>
constexpr bool has_type_v = has_type<T, Us...>::value;
template<typename>
struct is_tuple : std::false_type
{
};
template<typename... Ts>
struct is_tuple<std::tuple<Ts...>> : std::true_type
{
};
template<typename... Ts>
constexpr bool is_tuple_v = is_tuple<Ts...>::value;
namespace Impl
{
template <class T, class Tuple, size_t... I>
T* new_from_tuple(Tuple&& args, std::index_sequence<I...>)
{
return new T(std::get<I>(std::forward<Tuple>(args))...);
}
}
template<class T, class Tuple>
[[nodiscard]] T* new_from_tuple(Tuple&& args)
{
return Impl::new_from_tuple<T>(std::forward<Tuple>(args), std::make_index_sequence<std::tuple_size_v<std::remove_reference_t<Tuple>>>{});
}
}
#endif // Tuples_h__