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Network Layer 7 rework (Packet handling)

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* Move networkcode to a dedicated directory
* Rename clientserver.h to network/networkprotocol.h (Better name) and sanitize some includes
* Create object NetworkPacket
  * It stores command (opcode) and data separated
  * It also stores peer_id
  * Data reading can be done by using a streaming interface
* Change packet routing analysis
  * Remove old conditional analysis
  * Now uses function pointed analysis and add connection state ({Client,Server}::handlers)
  * Connection state permit to categorize condition to handle before analyze packets
  * Create a handler for depreciated messages, instead of duplicating code
This commit is contained in:
Loic Blot 2015-01-12 17:01:41 +01:00 • committed by Craig Robbins
parent 15c037614f
commit a704c04f00
20 changed files with 3519 additions and 2426 deletions
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86
src/network/networkpacket.h Normal file
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/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
Copyright (C) 2015 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef NETWORKPACKET_HEADER
#define NETWORKPACKET_HEADER
#include "util/numeric.h"
#include "networkprotocol.h"
class NetworkPacket
{
public:
NetworkPacket(u8 *data, u32 datasize, u16 peer_id);
~NetworkPacket();
// Getters
u32 getSize() { return m_datasize; }
u16 getPeerId() { return m_peer_id; }
// Data extractors
char* getString(u32 from_offset);
NetworkPacket& operator>>(std::string& dst);
NetworkPacket& operator>>(std::wstring& dst);
std::string readLongString();
char getChar(u32 offset);
NetworkPacket& operator>>(char& dst);
NetworkPacket& operator>>(bool& dst);
u8 getU8(u32 offset);
NetworkPacket& operator>>(u8& dst);
u8* getU8Ptr(u32 offset);
u16 getU16(u32 from_offset);
NetworkPacket& operator>>(u16& dst);
u32 getU32(u32 from_offset);
NetworkPacket& operator>>(u32& dst);
u64 getU64(u32 from_offset);
NetworkPacket& operator>>(u64& dst);
float getF1000(u32 offset);
NetworkPacket& operator>>(float& dst);
NetworkPacket& operator>>(v2f& dst);
NetworkPacket& operator>>(v3f& dst);
s16 getS16(u32 from_offset);
NetworkPacket& operator>>(s16& dst);
s32 getS32(u32 from_offset);
NetworkPacket& operator>>(s32& dst);
NetworkPacket& operator>>(v2s32& dst);
v3s16 getV3S16(u32 from_offset);
NetworkPacket& operator>>(v3s16& dst);
v3s32 getV3S32(u32 from_offset);
NetworkPacket& operator>>(v3s32& dst);
protected:
u8 *m_data;
u32 m_datasize;
u32 m_read_offset;
private:
u16 m_peer_id;
};
#endif