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, 110 insertions, 0 deletions

diff --git a/src/network/clientopcodes.cpp b/src/network/clientopcodes.cpp
new file mode 100644
index 000000000..247c67157
--- /dev/null
+++ b/src/network/clientopcodes.cpp
@@ -0,0 +1,110 @@
+/*
+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.
+*/
+
+#include "clientopcodes.h"
+
+const static ToClientCommandHandler null_command_handler = {"TOCLIENT_NULL", TOCLIENT_STATE_ALL, &Client::handleCommand_Null};
+
+const ToClientCommandHandler toClientCommandTable[TOCLIENT_NUM_MSG_TYPES] =
+{
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	{ "TOCLIENT_INIT",                     TOCLIENT_STATE_NOT_CONNECTED, &Client::handleCommand_Init }, // 0x10
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	{ "TOCLIENT_BLOCKDATA",                TOCLIENT_STATE_CONNECTED, &Client::handleCommand_BlockData }, // 0x20
+	{ "TOCLIENT_ADDNODE",                  TOCLIENT_STATE_CONNECTED, &Client::handleCommand_AddNode }, // 0x21
+	{ "TOCLIENT_REMOVENODE",               TOCLIENT_STATE_CONNECTED, &Client::handleCommand_RemoveNode }, // 0x22
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	{ "TOCLIENT_INVENTORY",                TOCLIENT_STATE_CONNECTED, &Client::handleCommand_Inventory }, // 0x27
+	null_command_handler,
+	{ "TOCLIENT_TIME_OF_DAY",              TOCLIENT_STATE_CONNECTED, &Client::handleCommand_TimeOfDay }, // 0x29
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	null_command_handler,
+	{ "TOCLIENT_CHAT_MESSAGE",             TOCLIENT_STATE_CONNECTED, &Client::handleCommand_ChatMessage }, // 0x30
+	{ "TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_ActiveObjectRemoveAdd }, // 0x31
+	{ "TOCLIENT_ACTIVE_OBJECT_MESSAGES",   TOCLIENT_STATE_CONNECTED, &Client::handleCommand_ActiveObjectMessages }, // 0x32
+	{ "TOCLIENT_HP",                       TOCLIENT_STATE_CONNECTED, &Client::handleCommand_HP }, // 0x33
+	{ "TOCLIENT_MOVE_PLAYER",              TOCLIENT_STATE_CONNECTED, &Client::handleCommand_MovePlayer }, // 0x34
+	{ "TOCLIENT_ACCESS_DENIED",            TOCLIENT_STATE_NOT_CONNECTED, &Client::handleCommand_AccessDenied }, // 0x35
+	{ "TOCLIENT_PLAYERITEM",               TOCLIENT_STATE_CONNECTED, &Client::handleCommand_PlayerItem }, // 0x36
+	{ "TOCLIENT_DEATHSCREEN",              TOCLIENT_STATE_CONNECTED, &Client::handleCommand_DeathScreen }, // 0x37
+	{ "TOCLIENT_MEDIA",                    TOCLIENT_STATE_CONNECTED, &Client::handleCommand_Media }, // 0x38
+	{ "TOCLIENT_TOOLDEF",                  TOCLIENT_STATE_CONNECTED, &Client::handleCommand_ToolDef }, // 0x39
+	{ "TOCLIENT_NODEDEF",                  TOCLIENT_STATE_CONNECTED, &Client::handleCommand_NodeDef }, // 0x3a
+	{ "TOCLIENT_CRAFTITEMDEF",             TOCLIENT_STATE_CONNECTED, &Client::handleCommand_CraftItemDef }, // 0x3b
+	{ "TOCLIENT_ANNOUNCE_MEDIA",           TOCLIENT_STATE_CONNECTED, &Client::handleCommand_AnnounceMedia }, // 0x3c
+	{ "TOCLIENT_ITEMDEF",                  TOCLIENT_STATE_CONNECTED, &Client::handleCommand_ItemDef }, // 0x3d
+	null_command_handler,
+	{ "TOCLIENT_PLAY_SOUND",               TOCLIENT_STATE_CONNECTED, &Client::handleCommand_PlaySound }, // 0x3f
+	{ "TOCLIENT_STOP_SOUND",               TOCLIENT_STATE_CONNECTED, &Client::handleCommand_StopSound }, // 0x40
+	{ "TOCLIENT_PRIVILEGES",               TOCLIENT_STATE_CONNECTED, &Client::handleCommand_Privileges }, // 0x41
+	{ "TOCLIENT_INVENTORY_FORMSPEC",       TOCLIENT_STATE_CONNECTED, &Client::handleCommand_InventoryFormSpec }, // 0x42
+	{ "TOCLIENT_DETACHED_INVENTORY",       TOCLIENT_STATE_CONNECTED, &Client::handleCommand_DetachedInventory }, // 0x43
+	{ "TOCLIENT_SHOW_FORMSPEC",            TOCLIENT_STATE_CONNECTED, &Client::handleCommand_ShowFormSpec }, // 0x44
+	{ "TOCLIENT_MOVEMENT",                 TOCLIENT_STATE_CONNECTED, &Client::handleCommand_Movement }, // 0x45
+	{ "TOCLIENT_SPAWN_PARTICLE",           TOCLIENT_STATE_CONNECTED, &Client::handleCommand_SpawnParticle }, // 0x46
+	{ "TOCLIENT_ADD_PARTICLESPAWNER",      TOCLIENT_STATE_CONNECTED, &Client::handleCommand_AddParticleSpawner }, // 0x47
+	{ "TOCLIENT_DELETE_PARTICLESPAWNER",   TOCLIENT_STATE_CONNECTED, &Client::handleCommand_DeleteParticleSpawner }, // 0x48
+	{ "TOCLIENT_HUDADD",                   TOCLIENT_STATE_CONNECTED, &Client::handleCommand_HudAdd }, // 0x49
+	{ "TOCLIENT_HUDRM",                    TOCLIENT_STATE_CONNECTED, &Client::handleCommand_HudRemove }, // 0x4a
+	{ "TOCLIENT_HUDCHANGE",                TOCLIENT_STATE_CONNECTED, &Client::handleCommand_HudChange }, // 0x4b
+	{ "TOCLIENT_HUD_SET_FLAGS",            TOCLIENT_STATE_CONNECTED, &Client::handleCommand_HudSetFlags }, // 0x4c
+	{ "TOCLIENT_HUD_SET_PARAM",            TOCLIENT_STATE_CONNECTED, &Client::handleCommand_HudSetParam }, // 0x4d
+	{ "TOCLIENT_BREATH",                   TOCLIENT_STATE_CONNECTED, &Client::handleCommand_Breath }, // 0x4e
+	{ "TOCLIENT_SET_SKY",                  TOCLIENT_STATE_CONNECTED, &Client::handleCommand_HudSetSky }, // 0x4f
+	{ "TOCLIENT_OVERRIDE_DAY_NIGHT_RATIO", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_OverrideDayNightRatio }, // 0x50
+	{ "TOCLIENT_LOCAL_PLAYER_ANIMATIONS",  TOCLIENT_STATE_CONNECTED, &Client::handleCommand_LocalPlayerAnimations }, // 0x51
+	{ "TOCLIENT_EYE_OFFSET",               TOCLIENT_STATE_CONNECTED, &Client::handleCommand_EyeOffset }, // 0x52
+};