Network Layer 7 rework (Packet handling)

* 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

1 files changed, 86 insertions, 0 deletions

diff --git a/src/network/networkpacket.h b/src/network/networkpacket.h
new file mode 100644
index 000000000..c9f7e3cde
--- /dev/null
+++ b/src/network/networkpacket.h
@@ -0,0 +1,86 @@
+/*
+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