(svn r13343) -Codechange: reorder/move variable/functions in the network headers so that nothing from the network directory needs to include basically all network headers.

29 files changed, 444 insertions, 354 deletions

diff --git a/src/console.cpp b/src/console.cpp
index 30d51cb1c..a9f2d20c3 100644
--- a/src/console.cpp
+++ b/src/console.cpp
@@ -3,13 +3,13 @@
 /** @file console.cpp Handling of the in-game console. */
 
 #include "stdafx.h"
-#include "console_internal.h"
-#include "network/network_data.h"
-#include "network/network_server.h"
 #include "core/alloc_func.hpp"
 #include "string_func.h"
 #include "strings_type.h"
 #include "core/math_func.hpp"
+#include "console_internal.h"
+#include "network/network.h"
+#include "network/network_func.h"
 #include "rev.h"
 
 #include <stdarg.h>
@@ -92,7 +92,7 @@ void IConsolePrint(ConsoleColour color_code, const char *string)
 #ifdef ENABLE_NETWORK
 	if (_redirect_console_to_client != 0) {
 		/* Redirect the string to the client */
-		SEND_COMMAND(PACKET_SERVER_RCON)(NetworkFindClientStateFromIndex(_redirect_console_to_client), color_code, string);
+		NetworkServerSendRcon(_redirect_console_to_client, color_code, string);
 		return;
 	}
 #endif
diff --git a/src/console_cmds.cpp b/src/console_cmds.cpp
index aa813356d..3bd461b56 100644
--- a/src/console_cmds.cpp
+++ b/src/console_cmds.cpp
@@ -10,17 +10,14 @@
 #include "landscape.h"
 #include "saveload.h"
 #include "variables.h"
-#include "network/network_data.h"
-#include "network/network_client.h"
-#include "network/network_server.h"
-#include "network/network_udp.h"
+#include "network/network.h"
+#include "network/network_func.h"
 #include "command_func.h"
 #include "settings_func.h"
 #include "fios.h"
 #include "fileio.h"
 #include "screenshot.h"
 #include "genworld.h"
-#include "network/network.h"
 #include "strings_func.h"
 #include "viewport_func.h"
 #include "window_func.h"
@@ -425,8 +422,8 @@ DEF_CONSOLE_CMD(ConBan)
 	}
 
 	if (ci != NULL) {
-		banip = inet_ntoa(*(struct in_addr *)&ci->client_ip);
-		SEND_COMMAND(PACKET_SERVER_ERROR)(NetworkFindClientStateFromIndex(index), NETWORK_ERROR_KICKED);
+		banip = GetPlayerIP(ci);
+		NetworkServerSendError(index, NETWORK_ERROR_KICKED);
 		IConsolePrint(CC_DEFAULT, "Client banned");
 	} else {
 		IConsolePrint(CC_DEFAULT, "Client not online, banned IP");
@@ -539,43 +536,19 @@ DEF_CONSOLE_CMD(ConRcon)
 	if (_network_server) {
 		IConsoleCmdExec(argv[2]);
 	} else {
-		SEND_COMMAND(PACKET_CLIENT_RCON)(argv[1], argv[2]);
+		NetworkClientSendRcon(argv[1], argv[2]);
 	}
 	return true;
 }
 
 DEF_CONSOLE_CMD(ConStatus)
 {
-	static const char* const stat_str[] = {
-		"inactive",
-		"authorizing",
-		"authorized",
-		"waiting",
-		"loading map",
-		"map done",
-		"ready",
-		"active"
-	};
-
-	NetworkTCPSocketHandler *cs;
-
 	if (argc == 0) {
 		IConsoleHelp("List the status of all clients connected to the server. Usage 'status'");
 		return true;
 	}
 
-	FOR_ALL_CLIENTS(cs) {
-		int lag = NetworkCalculateLag(cs);
-		const NetworkClientInfo *ci = DEREF_CLIENT_INFO(cs);
-		const char* status;
-
-		status = (cs->status < (ptrdiff_t)lengthof(stat_str) ? stat_str[cs->status] : "unknown");
-		IConsolePrintF(CC_INFO, "Client #%1d  name: '%s'  status: '%s'  frame-lag: %3d  company: %1d  IP: %s  unique-id: '%s'",
-			cs->index, ci->client_name, status, lag,
-			ci->client_playas + (IsValidPlayer(ci->client_playas) ? 1 : 0),
-			GetPlayerIP(ci), ci->unique_id);
-	}
-
+	NetworkServerShowStatusToConsole();
 	return true;
 }
 
@@ -629,7 +602,7 @@ DEF_CONSOLE_CMD(ConKick)
 	}
 
 	if (ci != NULL) {
-		SEND_COMMAND(PACKET_SERVER_ERROR)(NetworkFindClientStateFromIndex(index), NETWORK_ERROR_KICKED);
+		NetworkServerSendError(index, NETWORK_ERROR_KICKED);
 	} else {
 		IConsoleError("Client not found");
 	}
@@ -640,8 +613,6 @@ DEF_CONSOLE_CMD(ConKick)
 DEF_CONSOLE_CMD(ConResetCompany)
 {
 	const Player *p;
-	NetworkTCPSocketHandler *cs;
-	const NetworkClientInfo *ci;
 	PlayerID index;
 
 	if (argc == 0) {
@@ -672,15 +643,11 @@ DEF_CONSOLE_CMD(ConResetCompany)
 		return true;
 	}
 
-	/* Check if the company has active players */
-	FOR_ALL_CLIENTS(cs) {
-		ci = DEREF_CLIENT_INFO(cs);
-		if (ci->client_playas == index) {
-			IConsoleError("Cannot remove company: a client is connected to that company.");
-			return true;
-		}
+	if (NetworkCompanyHasPlayers(index)) {
+		IConsoleError("Cannot remove company: a client is connected to that company.");
+		return false;
 	}
-	ci = NetworkFindClientInfoFromIndex(NETWORK_SERVER_INDEX);
+	const NetworkClientInfo *ci = NetworkFindClientInfoFromIndex(NETWORK_SERVER_INDEX);
 	if (ci->client_playas == index) {
 		IConsoleError("Cannot remove company: the server is connected to that company.");
 		return true;
@@ -1187,9 +1154,9 @@ DEF_CONSOLE_CMD(ConSay)
 	if (argc != 2) return false;
 
 	if (!_network_server) {
-		SEND_COMMAND(PACKET_CLIENT_CHAT)(NETWORK_ACTION_CHAT, DESTTYPE_BROADCAST, 0 /* param does not matter */, argv[1]);
+		NetworkClientSendChat(NETWORK_ACTION_CHAT, DESTTYPE_BROADCAST, 0 /* param does not matter */, argv[1]);
 	} else {
-		NetworkServer_HandleChat(NETWORK_ACTION_CHAT, DESTTYPE_BROADCAST, 0, argv[1], NETWORK_SERVER_INDEX);
+		NetworkServerSendChat(NETWORK_ACTION_CHAT, DESTTYPE_BROADCAST, 0, argv[1], NETWORK_SERVER_INDEX);
 	}
 
 	return true;
@@ -1241,9 +1208,9 @@ DEF_CONSOLE_CMD(ConSayPlayer)
 	}
 
 	if (!_network_server) {
-		SEND_COMMAND(PACKET_CLIENT_CHAT)(NETWORK_ACTION_CHAT_COMPANY, DESTTYPE_TEAM, atoi(argv[1]), argv[2]);
+		NetworkClientSendChat(NETWORK_ACTION_CHAT_COMPANY, DESTTYPE_TEAM, atoi(argv[1]), argv[2]);
 	} else {
-		NetworkServer_HandleChat(NETWORK_ACTION_CHAT_COMPANY, DESTTYPE_TEAM, atoi(argv[1]), argv[2], NETWORK_SERVER_INDEX);
+		NetworkServerSendChat(NETWORK_ACTION_CHAT_COMPANY, DESTTYPE_TEAM, atoi(argv[1]), argv[2], NETWORK_SERVER_INDEX);
 	}
 
 	return true;
@@ -1260,9 +1227,9 @@ DEF_CONSOLE_CMD(ConSayClient)
 	if (argc != 3) return false;
 
 	if (!_network_server) {
-		SEND_COMMAND(PACKET_CLIENT_CHAT)(NETWORK_ACTION_CHAT_CLIENT, DESTTYPE_CLIENT, atoi(argv[1]), argv[2]);
+		NetworkClientSendChat(NETWORK_ACTION_CHAT_CLIENT, DESTTYPE_CLIENT, atoi(argv[1]), argv[2]);
 	} else {
-		NetworkServer_HandleChat(NETWORK_ACTION_CHAT_CLIENT, DESTTYPE_CLIENT, atoi(argv[1]), argv[2], NETWORK_SERVER_INDEX);
+		NetworkServerSendChat(NETWORK_ACTION_CHAT_CLIENT, DESTTYPE_CLIENT, atoi(argv[1]), argv[2], NETWORK_SERVER_INDEX);
 	}
 
 	return true;
@@ -1291,7 +1258,7 @@ bool NetworkChangeCompanyPassword(byte argc, char *argv[])
 	ttd_strlcpy(_network_player_info[_local_player].password, argv[0], sizeof(_network_player_info[_local_player].password));
 
 	if (!_network_server) {
-		SEND_COMMAND(PACKET_CLIENT_SET_PASSWORD)(_network_player_info[_local_player].password);
+		NetworkClientSetPassword();
 	} else {
 		HashCurrentCompanyPassword();
 	}
diff --git a/src/date.cpp b/src/date.cpp
index bcda4e3c2..908f94041 100644
--- a/src/date.cpp
+++ b/src/date.cpp
@@ -7,8 +7,7 @@
 #include "variables.h"
 #include "settings_type.h"
 #include "network/network.h"
-#include "network/network_data.h"
-#include "network/network_server.h"
+#include "network/network_func.h"
 #include "currency.h"
 #include "window_func.h"
 #include "functions.h"
@@ -268,7 +267,9 @@ void IncreaseDate()
 		TownsMonthlyLoop();
 		IndustryMonthlyLoop();
 		StationMonthlyLoop();
+#ifdef ENABLE_NETWORK
 		if (_network_server) NetworkServerMonthlyLoop();
+#endif /* ENABLE_NETWORK */
 	}
 
 	/* check if we entered a new year? */
@@ -281,7 +282,9 @@ void IncreaseDate()
 	RoadVehiclesYearlyLoop();
 	AircraftYearlyLoop();
 	ShipsYearlyLoop();
+#ifdef ENABLE_NETWORK
 	if (_network_server) NetworkServerYearlyLoop();
+#endif /* ENABLE_NETWORK */
 
 	if (_cur_year == _settings_client.gui.semaphore_build_before) ResetSignalVariant();
 
diff --git a/src/economy.cpp b/src/economy.cpp
index 68ff2572e..03a15ab25 100644
--- a/src/economy.cpp
+++ b/src/economy.cpp
@@ -14,7 +14,7 @@
 #include "town.h"
 #include "news_func.h"
 #include "network/network.h"
-#include "network/network_data.h"
+#include "network/network_func.h"
 #include "variables.h"
 #include "vehicle_gui.h"
 #include "ai/ai.h"
@@ -488,25 +488,7 @@ static void ChangeNetworkOwner(PlayerID current_player, PlayerID new_player)
 
 	if (!_network_server) return;
 
-	/* The server has to handle all administrative issues, for example
-	* updating and notifying all clients of what has happened */
-	NetworkTCPSocketHandler *cs;
-	NetworkClientInfo *ci = NetworkFindClientInfoFromIndex(NETWORK_SERVER_INDEX);
-
-	/* The server has just changed from player */
-	if (current_player == ci->client_playas) {
-		ci->client_playas = new_player;
-		NetworkUpdateClientInfo(NETWORK_SERVER_INDEX);
-	}
-
-	/* Find all clients that were in control of this company, and mark them as new_player */
-	FOR_ALL_CLIENTS(cs) {
-		ci = DEREF_CLIENT_INFO(cs);
-		if (current_player == ci->client_playas) {
-			ci->client_playas = new_player;
-			NetworkUpdateClientInfo(ci->client_index);
-		}
-	}
+	NetworkServerChangeOwner(current_player, new_player);
 #endif /* ENABLE_NETWORK */
 }
 
diff --git a/src/effectvehicle.cpp b/src/effectvehicle.cpp
index 877e7fa3e..9ea2e6ca3 100644
--- a/src/effectvehicle.cpp
+++ b/src/effectvehicle.cpp
@@ -25,7 +25,6 @@
 #include "industry_map.h"
 #include "station_map.h"
 #include "water_map.h"
-#include "network/network.h"
 #include "yapf/yapf.h"
 #include "newgrf_callbacks.h"
 #include "newgrf_engine.h"
diff --git a/src/main_gui.cpp b/src/main_gui.cpp
index 1a3986567..51ab5bf11 100644
--- a/src/main_gui.cpp
+++ b/src/main_gui.cpp
@@ -34,9 +34,7 @@
 #include "tilehighlight_func.h"
 
 #include "network/network.h"
-#include "network/network_data.h"
-#include "network/network_client.h"
-#include "network/network_server.h"
+#include "network/network_func.h"
 #include "network/network_gui.h"
 
 #include "table/sprites.h"
@@ -55,9 +53,9 @@ void CcGiveMoney(bool success, TileIndex tile, uint32 p1, uint32 p2)
 	snprintf(msg, sizeof(msg), "%d", p1);
 
 	if (!_network_server) {
-		SEND_COMMAND(PACKET_CLIENT_CHAT)(NETWORK_ACTION_GIVE_MONEY, DESTTYPE_TEAM, p2, msg);
+		NetworkClientSendChat(NETWORK_ACTION_GIVE_MONEY, DESTTYPE_TEAM, p2, msg);
 	} else {
-		NetworkServer_HandleChat(NETWORK_ACTION_GIVE_MONEY, DESTTYPE_TEAM, p2, msg, NETWORK_SERVER_INDEX);
+		NetworkServerSendChat(NETWORK_ACTION_GIVE_MONEY, DESTTYPE_TEAM, p2, msg, NETWORK_SERVER_INDEX);
 	}
 #endif /* ENABLE_NETWORK */
 }
diff --git a/src/network/core/core.h b/src/network/core/core.h
index 54ff156f3..4c5b3f9bd 100644
--- a/src/network/core/core.h
+++ b/src/network/core/core.h
@@ -62,7 +62,7 @@ public:
 	 * Whether this socket is currently bound to a socket.
 	 * @return true when the socket is bound, false otherwise
 	 */
-	bool IsConnected() { return this->sock != INVALID_SOCKET; }
+	bool IsConnected() const { return this->sock != INVALID_SOCKET; }
 
 	/**
 	 * Whether the current client connected to the socket has quit.
@@ -70,7 +70,7 @@ public:
 	 * data), the socket in not closed; only the packet is dropped.
 	 * @return true when the current client has quit, false otherwise
 	 */
-	bool HasClientQuit() { return this->has_quit; }
+	bool HasClientQuit() const { return this->has_quit; }
 
 	void Send_GRFIdentifier(Packet *p, const GRFIdentifier *grf);
 	void Recv_GRFIdentifier(Packet *p, GRFIdentifier *grf);
diff --git a/src/network/core/tcp.cpp b/src/network/core/tcp.cpp
index f44f1741c..6450d4778 100644
--- a/src/network/core/tcp.cpp
+++ b/src/network/core/tcp.cpp
@@ -11,7 +11,7 @@
 #include "../../openttd.h"
 #include "../../variables.h"
 
-#include "../network_data.h"
+#include "../network_internal.h"
 #include "packet.h"
 #include "tcp.h"
 
diff --git a/src/network/network.cpp b/src/network/network.cpp
index 77003e6a1..b0ab7a612 100644
--- a/src/network/network.cpp
+++ b/src/network/network.cpp
@@ -3,7 +3,7 @@
 /** @file network.cpp Base functions for networking support. */
 
 #include "../stdafx.h"
-#include "network_data.h"
+#include "../player_type.h"
 
 #ifdef ENABLE_NETWORK
 
@@ -15,6 +15,7 @@
 #include "../variables.h"
 #include "../date_func.h"
 #include "../newgrf_config.h"
+#include "network_internal.h"
 #include "network_client.h"
 #include "network_server.h"
 #include "network_udp.h"
@@ -38,7 +39,6 @@
 #ifdef DEBUG_DUMP_COMMANDS
 	#include "../core/alloc_func.hpp"
 #endif /* DEBUG_DUMP_COMMANDS */
-
 #include "table/strings.h"
 
 bool _network_reload_cfg;
@@ -46,6 +46,29 @@ bool _network_server;     ///< network-server is active
 bool _network_available;  ///< is network mode available?
 bool _network_dedicated;  ///< are we a dedicated server?
 bool _network_advertise;  ///< is the server advertising to the master server?
+bool _is_network_server;  ///< Does this client wants to be a network-server?
+NetworkGameInfo _network_game_info;
+NetworkPlayerInfo _network_player_info[MAX_PLAYERS];
+NetworkClientInfo _network_client_info[MAX_CLIENT_INFO];
+uint16 _network_own_client_index;
+uint16 _redirect_console_to_client;
+bool _network_need_advertise;
+uint32 _network_last_advertise_frame;
+uint8 _network_reconnect;
+char *_network_host_list[10];
+char *_network_ban_list[25];
+uint32 _frame_counter_server; // The frame_counter of the server, if in network-mode
+uint32 _frame_counter_max; // To where we may go with our clients
+uint32 _last_sync_frame; // Used in the server to store the last time a sync packet was sent to clients.
+uint32 _broadcast_list[MAX_INTERFACES + 1];
+uint32 _network_server_bind_ip;
+uint32 _sync_seed_1, _sync_seed_2;
+uint32 _sync_frame;
+bool _network_first_time;
+uint32 _network_last_host_ip;
+bool _network_udp_server;
+uint16 _network_udp_broadcast;
+uint8 _network_advertise_retries;
 
 /* Check whether NETWORK_NUM_LANDSCAPES is still in sync with NUM_LANDSCAPE */
 assert_compile((int)NETWORK_NUM_LANDSCAPES == (int)NUM_LANDSCAPE);
@@ -337,13 +360,13 @@ void CheckMinPlayers()
 
 		_min_players_paused = true;
 		DoCommandP(0, 1, 0, NULL, CMD_PAUSE);
-		NetworkServer_HandleChat(NETWORK_ACTION_SERVER_MESSAGE, DESTTYPE_BROADCAST, 0, "Game paused (not enough players)", NETWORK_SERVER_INDEX);
+		NetworkServerSendChat(NETWORK_ACTION_SERVER_MESSAGE, DESTTYPE_BROADCAST, 0, "Game paused (not enough players)", NETWORK_SERVER_INDEX);
 	} else {
 		if (!_min_players_paused) return;
 
 		_min_players_paused = false;
 		DoCommandP(0, 0, 0, NULL, CMD_PAUSE);
-		NetworkServer_HandleChat(NETWORK_ACTION_SERVER_MESSAGE, DESTTYPE_BROADCAST, 0, "Game unpaused (enough players)", NETWORK_SERVER_INDEX);
+		NetworkServerSendChat(NETWORK_ACTION_SERVER_MESSAGE, DESTTYPE_BROADCAST, 0, "Game unpaused (enough players)", NETWORK_SERVER_INDEX);
 	}
 }
 
@@ -664,7 +687,7 @@ void NetworkCloseClient(NetworkTCPSocketHandler *cs)
 	/* When the client was PRE_ACTIVE, the server was in pause mode, so unpause */
 	if (cs->status == STATUS_PRE_ACTIVE && _settings_client.network.pause_on_join) {
 		DoCommandP(0, 0, 0, NULL, CMD_PAUSE);
-		NetworkServer_HandleChat(NETWORK_ACTION_SERVER_MESSAGE, DESTTYPE_BROADCAST, 0, "Game unpaused", NETWORK_SERVER_INDEX);
+		NetworkServerSendChat(NETWORK_ACTION_SERVER_MESSAGE, DESTTYPE_BROADCAST, 0, "Game unpaused", NETWORK_SERVER_INDEX);
 	}
 
 	cs->Destroy();
diff --git a/src/network/network.h b/src/network/network.h
index 0e4653901..1331a6826 100644
--- a/src/network/network.h
+++ b/src/network/network.h
@@ -17,6 +17,7 @@ extern bool _network_server;     ///< network-server is active
 extern bool _network_available;  ///< is network mode available?
 extern bool _network_dedicated;  ///< are we a dedicated server?
 extern bool _network_advertise;  ///< is the server advertising to the master server?
+extern bool _is_network_server;  ///< Does this client wants to be a network-server?
 
 #else /* ENABLE_NETWORK */
 /* Network function stubs when networking is disabled */
@@ -29,6 +30,7 @@ static inline void NetworkShutDown() {}
 #define _network_available 0
 #define _network_dedicated 0
 #define _network_advertise 0
+#define _is_network_server 0
 
 #endif /* ENABLE_NETWORK */
 
diff --git a/src/network/network_client.cpp b/src/network/network_client.cpp
index 9411a28a4..cd2df7f23 100644
--- a/src/network/network_client.cpp
+++ b/src/network/network_client.cpp
@@ -7,7 +7,7 @@
 #include "../stdafx.h"
 #include "../debug.h"
 #include "../openttd.h"
-#include "network_data.h"
+#include "network_internal.h"
 #include "core/tcp.h"
 #include "network_client.h"
 #include "network_gamelist.h"
@@ -938,4 +938,39 @@ NetworkRecvStatus NetworkClient_ReadPackets(NetworkTCPSocketHandler *cs)
 	return res;
 }
 
+void NetworkClientSendRcon(const char *password, const char *command)
+{
+	SEND_COMMAND(PACKET_CLIENT_RCON)(password, command);
+}
+
+void NetworkUpdatePlayerName()
+{
+	NetworkClientInfo *ci = NetworkFindClientInfoFromIndex(_network_own_client_index);
+
+	if (ci == NULL) return;
+
+	/* Don't change the name if it is the same as the old name */
+	if (strcmp(ci->client_name, _settings_client.network.player_name) != 0) {
+		if (!_network_server) {
+			SEND_COMMAND(PACKET_CLIENT_SET_NAME)(_settings_client.network.player_name);
+		} else {
+			if (NetworkFindName(_settings_client.network.player_name)) {
+				NetworkTextMessage(NETWORK_ACTION_NAME_CHANGE, CC_DEFAULT, false, ci->client_name, "%s", _settings_client.network.player_name);
+				ttd_strlcpy(ci->client_name, _settings_client.network.player_name, sizeof(ci->client_name));
+				NetworkUpdateClientInfo(NETWORK_SERVER_INDEX);
+			}
+		}
+	}
+}
+
+void NetworkClientSendChat(NetworkAction action, DestType type, int dest, const char *msg)
+{
+	SEND_COMMAND(PACKET_CLIENT_CHAT)(action, type, dest, msg);
+}
+
+void NetworkClientSetPassword()
+{
+	SEND_COMMAND(PACKET_CLIENT_SET_PASSWORD)(_network_player_info[_local_player].password);
+}
+
 #endif /* ENABLE_NETWORK */
diff --git a/src/network/network_data.cpp b/src/network/network_data.cpp
index ede255ba9..b24b2e498 100644
--- a/src/network/network_data.cpp
+++ b/src/network/network_data.cpp
@@ -6,7 +6,7 @@
 
 #include "../stdafx.h"
 #include "../debug.h"
-#include "network_data.h"
+#include "network_internal.h"
 #include "network_client.h"
 #include "../command_func.h"
 #include "../callback_table.h"
diff --git a/src/network/network_data.h b/src/network/network_data.h
deleted file mode 100644
index 2541fac0b..000000000
--- a/src/network/network_data.h
+++ /dev/null
@@ -1,121 +0,0 @@
-/* $Id$ */
-
-/** @file network_data.h Internal functions. */
-
-#ifndef NETWORK_DATA_H
-#define NETWORK_DATA_H
-
-#include "../openttd.h"
-#include "../console_type.h"
-#include "network.h"
-#include "network_internal.h"
-
-// Is the network enabled?
-#ifdef ENABLE_NETWORK
-
-#include "core/os_abstraction.h"
-#include "core/core.h"
-#include "core/config.h"
-#include "core/packet.h"
-#include "core/tcp.h"
-
-#define MAX_TEXT_MSG_LEN 1024 /* long long long long sentences :-) */
-
-// The client-info-server-index is always 1
-#define NETWORK_SERVER_INDEX 1
-#define NETWORK_EMPTY_INDEX 0
-
-enum MapPacket {
-	MAP_PACKET_START,
-	MAP_PACKET_NORMAL,
-	MAP_PACKET_END,
-};
-
-enum NetworkErrorCode {
-	NETWORK_ERROR_GENERAL, // Try to use thisone like never
-
-	// Signals from clients
-	NETWORK_ERROR_DESYNC,
-	NETWORK_ERROR_SAVEGAME_FAILED,
-	NETWORK_ERROR_CONNECTION_LOST,
-	NETWORK_ERROR_ILLEGAL_PACKET,
-	NETWORK_ERROR_NEWGRF_MISMATCH,
-
-	// Signals from servers
-	NETWORK_ERROR_NOT_AUTHORIZED,
-	NETWORK_ERROR_NOT_EXPECTED,
-	NETWORK_ERROR_WRONG_REVISION,
-	NETWORK_ERROR_NAME_IN_USE,
-	NETWORK_ERROR_WRONG_PASSWORD,
-	NETWORK_ERROR_PLAYER_MISMATCH, // Happens in CLIENT_COMMAND
-	NETWORK_ERROR_KICKED,
-	NETWORK_ERROR_CHEATER,
-	NETWORK_ERROR_FULL,
-};
-
-// Actions that can be used for NetworkTextMessage
-enum NetworkAction {
-	NETWORK_ACTION_JOIN,
-	NETWORK_ACTION_LEAVE,
-	NETWORK_ACTION_SERVER_MESSAGE,
-	NETWORK_ACTION_CHAT,
-	NETWORK_ACTION_CHAT_COMPANY,
-	NETWORK_ACTION_CHAT_CLIENT,
-	NETWORK_ACTION_GIVE_MONEY,
-	NETWORK_ACTION_NAME_CHANGE,
-};
-
-enum NetworkPasswordType {
-	NETWORK_GAME_PASSWORD,
-	NETWORK_COMPANY_PASSWORD,
-};
-
-enum DestType {
-	DESTTYPE_BROADCAST, ///< Send message/notice to all players (All)
-	DESTTYPE_TEAM,    ///< Send message/notice to everyone playing the same company (Team)
-	DESTTYPE_CLIENT,    ///< Send message/notice to only a certain player (Private)
-};
-
-// following externs are instantiated at network.cpp
-extern CommandPacket *_local_command_queue;
-
-// Here we keep track of the clients
-//  (and the client uses [0] for his own communication)
-extern NetworkTCPSocketHandler _clients[MAX_CLIENTS];
-
-#define DEREF_CLIENT(i) (&_clients[i])
-// This returns the NetworkClientInfo from a NetworkClientState
-#define DEREF_CLIENT_INFO(cs) (&_network_client_info[cs - _clients])
-
-// Macros to make life a bit more easier
-#define DEF_CLIENT_RECEIVE_COMMAND(type) NetworkRecvStatus NetworkPacketReceive_ ## type ## _command(Packet *p)
-#define DEF_CLIENT_SEND_COMMAND(type) void NetworkPacketSend_ ## type ## _command()
-#define DEF_CLIENT_SEND_COMMAND_PARAM(type) void NetworkPacketSend_ ## type ## _command
-#define DEF_SERVER_RECEIVE_COMMAND(type) void NetworkPacketReceive_ ## type ## _command(NetworkTCPSocketHandler *cs, Packet *p)
-#define DEF_SERVER_SEND_COMMAND(type) void NetworkPacketSend_ ## type ## _command(NetworkTCPSocketHandler *cs)
-#define DEF_SERVER_SEND_COMMAND_PARAM(type) void NetworkPacketSend_ ## type ## _command
-
-#define SEND_COMMAND(type) NetworkPacketSend_ ## type ## _command
-#define RECEIVE_COMMAND(type) NetworkPacketReceive_ ## type ## _command
-
-#define FOR_ALL_CLIENTS(cs) for (cs = _clients; cs != endof(_clients) && cs->IsConnected(); cs++)
-#define FOR_ALL_ACTIVE_CLIENT_INFOS(ci) for (ci = _network_client_info; ci != endof(_network_client_info); ci++) if (ci->client_index != NETWORK_EMPTY_INDEX)
-
-void NetworkExecuteCommand(CommandPacket *cp);
-void NetworkAddCommandQueue(NetworkTCPSocketHandler *cs, CommandPacket *cp);
-
-// from network.c
-void NetworkCloseClient(NetworkTCPSocketHandler *cs);
-void CDECL NetworkTextMessage(NetworkAction action, ConsoleColour color, bool self_send, const char *name, const char *str, ...);
-void NetworkGetClientName(char *clientname, size_t size, const NetworkTCPSocketHandler *cs);
-uint NetworkCalculateLag(const NetworkTCPSocketHandler *cs);
-byte NetworkGetCurrentLanguageIndex();
-NetworkClientInfo *NetworkFindClientInfoFromIndex(uint16 client_index);
-NetworkClientInfo *NetworkFindClientInfoFromIP(const char *ip);
-NetworkTCPSocketHandler *NetworkFindClientStateFromIndex(uint16 client_index);
-unsigned long NetworkResolveHost(const char *hostname);
-char* GetNetworkErrorMsg(char* buf, NetworkErrorCode err, const char* last);
-
-#endif /* ENABLE_NETWORK */
-
-#endif /* NETWORK_DATA_H */
diff --git a/src/network/network_func.h b/src/network/network_func.h
new file mode 100644
index 000000000..599defb9d
--- /dev/null
+++ b/src/network/network_func.h
@@ -0,0 +1,63 @@
+/* $Id$ */
+
+/** @file network_internal.h Variables and function used internally. */
+
+#ifndef NETWORK_FUNC_H
+#define NETWORK_FUNC_H
+
+#ifdef ENABLE_NETWORK
+
+#include "network_type.h"
+#include "../console_type.h"
+
+extern NetworkGameInfo _network_game_info;
+extern NetworkPlayerInfo _network_player_info[MAX_PLAYERS];
+extern NetworkClientInfo _network_client_info[MAX_CLIENT_INFO];
+
+extern uint16 _network_own_client_index;
+extern uint16 _redirect_console_to_client;
+extern bool _network_need_advertise;
+extern uint32 _network_last_advertise_frame;
+extern uint8 _network_reconnect;
+extern char *_network_host_list[10];
+extern char *_network_ban_list[25];
+
+byte NetworkSpectatorCount();
+void CheckMinPlayers();
+void NetworkUpdatePlayerName();
+bool NetworkCompanyHasPlayers(PlayerID company);
+bool NetworkChangeCompanyPassword(byte argc, char *argv[]);
+void NetworkReboot();
+void NetworkDisconnect();
+void NetworkGameLoop();
+void NetworkUDPGameLoop();
+void NetworkUDPCloseAll();
+void ParseConnectionString(const char **player, const char **port, char *connection_string);
+void NetworkStartDebugLog(const char *hostname, uint16 port);
+void NetworkPopulateCompanyInfo();
+
+void NetworkUpdateClientInfo(uint16 client_index);
+bool NetworkClientConnectGame(const char *host, uint16 port);
+void NetworkClientSendRcon(const char *password, const char *command);
+void NetworkClientSendChat(NetworkAction action, DestType type, int dest, const char *msg);
+void NetworkClientSetPassword();
+
+/*** Commands ran by the server ***/
+void NetworkServerMonthlyLoop();
+void NetworkServerYearlyLoop();
+void NetworkServerChangeOwner(PlayerID current_player, PlayerID new_player);
+void NetworkServerShowStatusToConsole();
+bool NetworkServerStart();
+
+NetworkClientInfo *NetworkFindClientInfoFromIndex(uint16 client_index);
+NetworkClientInfo *NetworkFindClientInfoFromIP(const char *ip);
+const char* GetPlayerIP(const NetworkClientInfo *ci);
+
+void NetworkServerSendRcon(uint16 client_index, ConsoleColour colour_code, const char *string);
+void NetworkServerSendError(uint16 client_index, NetworkErrorCode error);
+void NetworkServerSendChat(NetworkAction action, DestType type, int dest, const char *msg, uint16 from_index);
+
+#define FOR_ALL_ACTIVE_CLIENT_INFOS(ci) for (ci = _network_client_info; ci != endof(_network_client_info); ci++) if (ci->client_index != NETWORK_EMPTY_INDEX)
+
+#endif /* ENABLE_NETWORK */
+#endif /* NETWORK_FUNC_H */
diff --git a/src/network/network_gamelist.cpp b/src/network/network_gamelist.cpp
index f821c063f..efec52220 100644
--- a/src/network/network_gamelist.cpp
+++ b/src/network/network_gamelist.cpp
@@ -11,6 +11,7 @@
 #include "../debug.h"
 #include "../newgrf_config.h"
 #include "../core/alloc_func.hpp"
+#include "network_internal.h"
 #include "core/game.h"
 #include "network_udp.h"
 #include "network_gamelist.h"
diff --git a/src/network/network_gamelist.h b/src/network/network_gamelist.h
index 31ec69171..a7e8f3578 100644
--- a/src/network/network_gamelist.h
+++ b/src/network/network_gamelist.h
@@ -5,6 +5,8 @@
 #ifndef NETWORK_GAMELIST_H
 #define NETWORK_GAMELIST_H
 
+#include "network_type.h"
+
 /** Structure with information shown in the game list (GUI) */
 struct NetworkGameList {
 	NetworkGameInfo info;  ///< The game information of this server
diff --git a/src/network/network_gui.cpp b/src/network/network_gui.cpp
index 413a0b530..9125fd2e6 100644
--- a/src/network/network_gui.cpp
+++ b/src/network/network_gui.cpp
@@ -9,7 +9,7 @@
 #include "network.h"
 #include "../date_func.h"
 #include "../fios.h"
-#include "network_data.h"
+#include "network_internal.h"
 #include "network_client.h"
 #include "network_gui.h"
 #include "network_gamelist.h"
@@ -1559,6 +1559,12 @@ void ShowNetworkNeedPassword(NetworkPasswordType npt)
 	ShowQueryString(STR_EMPTY, caption, 20, 180, FindWindowById(WC_NETWORK_STATUS_WINDOW, 0), CS_ALPHANUMERAL);
 }
 
+// Vars needed for the join-GUI
+NetworkJoinStatus _network_join_status;
+uint8 _network_join_waiting;
+uint16 _network_join_kbytes;
+uint16 _network_join_kbytes_total;
+
 struct NetworkJoinStatusWindow : Window {
 	NetworkJoinStatusWindow(const WindowDesc *desc) : Window(desc)
 	{
@@ -1640,7 +1646,7 @@ static void SendChat(const char *buf, DestType type, int dest)
 	if (!_network_server) {
 		SEND_COMMAND(PACKET_CLIENT_CHAT)((NetworkAction)(NETWORK_ACTION_CHAT + type), type, dest, buf);
 	} else {
-		NetworkServer_HandleChat((NetworkAction)(NETWORK_ACTION_CHAT + type), type, dest, buf, NETWORK_SERVER_INDEX);
+		NetworkServerSendChat((NetworkAction)(NETWORK_ACTION_CHAT + type), type, dest, buf, NETWORK_SERVER_INDEX);
 	}
 }
 
diff --git a/src/network/network_gui.h b/src/network/network_gui.h
index 46cd67826..77276a8fb 100644
--- a/src/network/network_gui.h
+++ b/src/network/network_gui.h
@@ -5,11 +5,10 @@
 #ifndef NETWORK_GUI_H
 #define NETWORK_GUI_H
 
-#include "../window_type.h"
-
 #ifdef ENABLE_NETWORK
 
-#include "network_data.h"
+#include "../window_type.h"
+#include "network_type.h"
 
 void ShowNetworkNeedPassword(NetworkPasswordType npt);
 void ShowNetworkGiveMoneyWindow(PlayerID player); // PlayerID
diff --git a/src/network/network_internal.h b/src/network/network_internal.h
index d38e8bcc0..3ebf04f72 100644
--- a/src/network/network_internal.h
+++ b/src/network/network_internal.h
@@ -7,10 +7,13 @@
 
 #ifdef ENABLE_NETWORK
 
-#include "../player_type.h"
-#include "../economy_type.h"
+#include "network.h"
+#include "network_func.h"
+#include "core/os_abstraction.h"
+#include "core/core.h"
 #include "core/config.h"
-#include "core/game.h"
+#include "core/packet.h"
+#include "core/tcp.h"
 
 /**
  * If this line is enable, every frame will have a sync test
@@ -29,50 +32,14 @@
  */
 //#define NETWORK_SEND_DOUBLE_SEED
 
+#define MAX_TEXT_MSG_LEN 1024 /* long long long long sentences :-) */
 
-enum {
-	/**
-	 * How many clients can we have? Like.. MAX_PLAYERS - 1 is the amount of
-	 *  players that can really play.. so.. a max of 4 spectators.. gives us..
-	 *  MAX_PLAYERS + 3
-	 */
-	MAX_CLIENTS = MAX_PLAYERS + 3,
-
-	/** Do not change this next line. It should _ALWAYS_ be MAX_CLIENTS + 1 */
-	MAX_CLIENT_INFO = MAX_CLIENTS + 1,
-
-	/** Maximum number of internet interfaces supported. */
-	MAX_INTERFACES = 9,
-
-	/** How many vehicle/station types we put over the network */
-	NETWORK_VEHICLE_TYPES = 5,
-	NETWORK_STATION_TYPES = 5,
+enum MapPacket {
+	MAP_PACKET_START,
+	MAP_PACKET_NORMAL,
+	MAP_PACKET_END,
 };
 
-struct NetworkPlayerInfo {
-	char company_name[NETWORK_NAME_LENGTH];         ///< Company name
-	char password[NETWORK_PASSWORD_LENGTH];         ///< The password for the player
-	Year inaugurated_year;                          ///< What year the company started in
-	Money company_value;                            ///< The company value
-	Money money;                                    ///< The amount of money the company has
-	Money income;                                   ///< How much did the company earned last year
-	uint16 performance;                             ///< What was his performance last month?
-	bool use_password;                              ///< Is there a password
-	uint16 num_vehicle[NETWORK_VEHICLE_TYPES];      ///< How many vehicles are there of this type?
-	uint16 num_station[NETWORK_STATION_TYPES];      ///< How many stations are there of this type?
-	char players[NETWORK_PLAYERS_LENGTH];           ///< The players that control this company (Name1, name2, ..)
-	uint16 months_empty;                            ///< How many months the company is empty
-};
-
-struct NetworkClientInfo {
-	uint16 client_index;                            ///< Index of the client (same as ClientState->index)
-	char client_name[NETWORK_CLIENT_NAME_LENGTH];   ///< Name of the client
-	byte client_lang;                               ///< The language of the client
-	PlayerID client_playas;                         ///< As which player is this client playing (PlayerID)
-	uint32 client_ip;                               ///< IP-address of the client (so he can be banned)
-	Date join_date;                                 ///< Gamedate the player has joined
-	char unique_id[NETWORK_UNIQUE_ID_LENGTH];       ///< Every play sends an unique id so we can indentify him
-};
 
 enum NetworkJoinStatus {
 	NETWORK_JOIN_STATUS_CONNECTING,
@@ -126,70 +93,83 @@ enum NetworkLanguage {
 	NETLANG_COUNT
 };
 
-VARDEF NetworkGameInfo _network_game_info;
-VARDEF NetworkPlayerInfo _network_player_info[MAX_PLAYERS];
-VARDEF NetworkClientInfo _network_client_info[MAX_CLIENT_INFO];
+#define VARDEF extern
 
-VARDEF uint16 _network_own_client_index;
+extern NetworkGameInfo _network_game_info;
+extern NetworkPlayerInfo _network_player_info[MAX_PLAYERS];
 
-VARDEF uint32 _frame_counter_server; // The frame_counter of the server, if in network-mode
-VARDEF uint32 _frame_counter_max; // To where we may go with our clients
+extern uint32 _frame_counter_server; // The frame_counter of the server, if in network-mode
+extern uint32 _frame_counter_max; // To where we may go with our clients
 
-VARDEF uint32 _last_sync_frame; // Used in the server to store the last time a sync packet was sent to clients.
+extern uint32 _last_sync_frame; // Used in the server to store the last time a sync packet was sent to clients.
 
 // networking settings
-VARDEF uint32 _broadcast_list[MAX_INTERFACES + 1];
+extern uint32 _broadcast_list[MAX_INTERFACES + 1];
 
-VARDEF uint32 _network_server_bind_ip;
-VARDEF bool _is_network_server; // Does this client wants to be a network-server?
+extern uint32 _network_server_bind_ip;
 
-VARDEF uint16 _redirect_console_to_client;
-
-VARDEF uint32 _sync_seed_1, _sync_seed_2;
-VARDEF uint32 _sync_frame;
-VARDEF bool _network_first_time;
+extern uint32 _sync_seed_1, _sync_seed_2;
+extern uint32 _sync_frame;
+extern bool _network_first_time;
 // Vars needed for the join-GUI
-VARDEF NetworkJoinStatus _network_join_status;
-VARDEF uint8 _network_join_waiting;
-VARDEF uint16 _network_join_kbytes;
-VARDEF uint16 _network_join_kbytes_total;
+extern NetworkJoinStatus _network_join_status;
+extern uint8 _network_join_waiting;
+extern uint16 _network_join_kbytes;
+extern uint16 _network_join_kbytes_total;
 
-VARDEF uint32 _network_last_host_ip;
-VARDEF uint8 _network_reconnect;
+extern uint32 _network_last_host_ip;
+extern uint8 _network_reconnect;
 
-VARDEF bool _network_udp_server;
-VARDEF uint16 _network_udp_broadcast;
+extern bool _network_udp_server;
+extern uint16 _network_udp_broadcast;
 
-VARDEF bool _network_need_advertise;
-VARDEF uint32 _network_last_advertise_frame;
-VARDEF uint8 _network_advertise_retries;
+extern uint8 _network_advertise_retries;
 
-void NetworkTCPQueryServer(const char* host, unsigned short port);
+// following externs are instantiated at network.cpp
+extern CommandPacket *_local_command_queue;
 
-byte NetworkSpectatorCount();
+// Here we keep track of the clients
+//  (and the client uses [0] for his own communication)
+extern NetworkTCPSocketHandler _clients[MAX_CLIENTS];
 
-VARDEF char *_network_host_list[10];
-VARDEF char *_network_ban_list[25];
+void NetworkTCPQueryServer(const char* host, unsigned short port);
 
-void ParseConnectionString(const char **player, const char **port, char *connection_string);
-void NetworkUpdateClientInfo(uint16 client_index);
 void NetworkAddServer(const char *b);
 void NetworkRebuildHostList();
-bool NetworkChangeCompanyPassword(byte argc, char *argv[]);
-void NetworkPopulateCompanyInfo();
 void UpdateNetworkGameWindow(bool unselect);
-void CheckMinPlayers();
-void NetworkStartDebugLog(const char *hostname, uint16 port);
-
-void NetworkUDPCloseAll();
-void NetworkGameLoop();
-void NetworkUDPGameLoop();
-bool NetworkServerStart();
-bool NetworkClientConnectGame(const char *host, uint16 port);
-void NetworkReboot();
-void NetworkDisconnect();
 
 bool IsNetworkCompatibleVersion(const char *version);
 
+void NetworkExecuteCommand(CommandPacket *cp);
+void NetworkAddCommandQueue(NetworkTCPSocketHandler *cs, CommandPacket *cp);
+
+// from network.c
+void NetworkCloseClient(NetworkTCPSocketHandler *cs);
+void CDECL NetworkTextMessage(NetworkAction action, ConsoleColour color, bool self_send, const char *name, const char *str, ...);
+void NetworkGetClientName(char *clientname, size_t size, const NetworkTCPSocketHandler *cs);
+uint NetworkCalculateLag(const NetworkTCPSocketHandler *cs);
+byte NetworkGetCurrentLanguageIndex();
+NetworkTCPSocketHandler *NetworkFindClientStateFromIndex(uint16 client_index);
+unsigned long NetworkResolveHost(const char *hostname);
+char* GetNetworkErrorMsg(char* buf, NetworkErrorCode err, const char* last);
+bool NetworkFindName(char new_name[NETWORK_CLIENT_NAME_LENGTH]);
+
+#define DEREF_CLIENT(i) (&_clients[i])
+// This returns the NetworkClientInfo from a NetworkClientState
+#define DEREF_CLIENT_INFO(cs) (&_network_client_info[cs - _clients])
+
+// Macros to make life a bit more easier
+#define DEF_CLIENT_RECEIVE_COMMAND(type) NetworkRecvStatus NetworkPacketReceive_ ## type ## _command(Packet *p)
+#define DEF_CLIENT_SEND_COMMAND(type) void NetworkPacketSend_ ## type ## _command()
+#define DEF_CLIENT_SEND_COMMAND_PARAM(type) void NetworkPacketSend_ ## type ## _command
+#define DEF_SERVER_RECEIVE_COMMAND(type) void NetworkPacketReceive_ ## type ## _command(NetworkTCPSocketHandler *cs, Packet *p)
+#define DEF_SERVER_SEND_COMMAND(type) void NetworkPacketSend_ ## type ## _command(NetworkTCPSocketHandler *cs)
+#define DEF_SERVER_SEND_COMMAND_PARAM(type) void NetworkPacketSend_ ## type ## _command
+
+#define SEND_COMMAND(type) NetworkPacketSend_ ## type ## _command
+#define RECEIVE_COMMAND(type) NetworkPacketReceive_ ## type ## _command
+
+#define FOR_ALL_CLIENTS(cs) for (cs = _clients; cs != endof(_clients) && cs->IsConnected(); cs++)
+
 #endif /* ENABLE_NETWORK */
 #endif /* NETWORK_INTERNAL_H */
diff --git a/src/network/network_server.cpp b/src/network/network_server.cpp
index 7052ff887..3b7da8909 100644
--- a/src/network/network_server.cpp
+++ b/src/network/network_server.cpp
@@ -8,7 +8,7 @@
 #include "../openttd.h" // XXX StringID
 #include "../debug.h"
 #include "../strings_func.h"
-#include "network_data.h"
+#include "network_internal.h"
 #include "core/tcp.h"
 #include "../vehicle_base.h"
 #include "../vehicle_func.h"
@@ -804,7 +804,7 @@ DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_MAP_OK)
 			/* Now pause the game till the client is in sync */
 			DoCommandP(0, 1, 0, NULL, CMD_PAUSE);
 
-			NetworkServer_HandleChat(NETWORK_ACTION_SERVER_MESSAGE, DESTTYPE_BROADCAST, 0, "Game paused (incoming client)", NETWORK_SERVER_INDEX);
+			NetworkServerSendChat(NETWORK_ACTION_SERVER_MESSAGE, DESTTYPE_BROADCAST, 0, "Game paused (incoming client)", NETWORK_SERVER_INDEX);
 		}
 	} else {
 		// Wrong status for this packet, give a warning to client, and close connection
@@ -1023,7 +1023,7 @@ DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_ACK)
 
 		if (_settings_client.network.pause_on_join) {
 			DoCommandP(0, 0, 0, NULL, CMD_PAUSE);
-			NetworkServer_HandleChat(NETWORK_ACTION_SERVER_MESSAGE, DESTTYPE_BROADCAST, 0, "Game unpaused (client connected)", NETWORK_SERVER_INDEX);
+			NetworkServerSendChat(NETWORK_ACTION_SERVER_MESSAGE, DESTTYPE_BROADCAST, 0, "Game unpaused (client connected)", NETWORK_SERVER_INDEX);
 		}
 
 		CheckMinPlayers();
@@ -1040,7 +1040,7 @@ DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_ACK)
 
 
 
-void NetworkServer_HandleChat(NetworkAction action, DestType desttype, int dest, const char *msg, uint16 from_index)
+void NetworkServerSendChat(NetworkAction action, DestType desttype, int dest, const char *msg, uint16 from_index)
 {
 	NetworkTCPSocketHandler *cs;
 	const NetworkClientInfo *ci, *ci_own, *ci_to;
@@ -1146,7 +1146,7 @@ DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_CHAT)
 
 	p->Recv_string(msg, MAX_TEXT_MSG_LEN);
 
-	NetworkServer_HandleChat(action, desttype, dest, msg, cs->index);
+	NetworkServerSendChat(action, desttype, dest, msg, cs->index);
 }
 
 DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_SET_PASSWORD)
@@ -1582,4 +1582,82 @@ void NetworkServerMonthlyLoop()
 	NetworkAutoCleanCompanies();
 }
 
+void NetworkServerChangeOwner(PlayerID current_player, PlayerID new_player)
+{
+	/* The server has to handle all administrative issues, for example
+	 * updating and notifying all clients of what has happened */
+	NetworkTCPSocketHandler *cs;
+	NetworkClientInfo *ci = NetworkFindClientInfoFromIndex(NETWORK_SERVER_INDEX);
+
+	/* The server has just changed from player */
+	if (current_player == ci->client_playas) {
+		ci->client_playas = new_player;
+		NetworkUpdateClientInfo(NETWORK_SERVER_INDEX);
+	}
+
+	/* Find all clients that were in control of this company, and mark them as new_player */
+	FOR_ALL_CLIENTS(cs) {
+		ci = DEREF_CLIENT_INFO(cs);
+		if (current_player == ci->client_playas) {
+			ci->client_playas = new_player;
+			NetworkUpdateClientInfo(ci->client_index);
+		}
+	}
+}
+
+const char* GetPlayerIP(const NetworkClientInfo* ci)
+{
+	struct in_addr addr;
+
+	addr.s_addr = ci->client_ip;
+	return inet_ntoa(addr);
+}
+
+void NetworkServerShowStatusToConsole()
+{
+	static const char* const stat_str[] = {
+		"inactive",
+		"authorizing",
+		"authorized",
+		"waiting",
+		"loading map",
+		"map done",
+		"ready",
+		"active"
+	};
+
+	NetworkTCPSocketHandler *cs;
+	FOR_ALL_CLIENTS(cs) {
+		int lag = NetworkCalculateLag(cs);
+		const NetworkClientInfo *ci = DEREF_CLIENT_INFO(cs);
+		const char* status;
+
+		status = (cs->status < (ptrdiff_t)lengthof(stat_str) ? stat_str[cs->status] : "unknown");
+		IConsolePrintF(CC_INFO, "Client #%1d  name: '%s'  status: '%s'  frame-lag: %3d  company: %1d  IP: %s  unique-id: '%s'",
+			cs->index, ci->client_name, status, lag,
+			ci->client_playas + (IsValidPlayer(ci->client_playas) ? 1 : 0),
+			GetPlayerIP(ci), ci->unique_id);
+	}
+}
+
+void NetworkServerSendRcon(uint16 client_index, ConsoleColour colour_code, const char *string)
+{
+	SEND_COMMAND(PACKET_SERVER_RCON)(NetworkFindClientStateFromIndex(client_index), colour_code, string);
+}
+
+void NetworkServerSendError(uint16 client_index, NetworkErrorCode error)
+{
+	SEND_COMMAND(PACKET_SERVER_ERROR)(NetworkFindClientStateFromIndex(client_index), error);
+}
+
+bool NetworkCompanyHasPlayers(PlayerID company)
+{
+	const NetworkTCPSocketHandler *cs;
+	const NetworkClientInfo *ci;
+	FOR_ALL_CLIENTS(cs) {
+		ci = DEREF_CLIENT_INFO(cs);
+		if (ci->client_playas == company) return true;
+	}
+	return false;
+}
 #endif /* ENABLE_NETWORK */
diff --git a/src/network/network_server.h b/src/network/network_server.h
index 07f9cf29a..3b5b02fef 100644
--- a/src/network/network_server.h
+++ b/src/network/network_server.h
@@ -14,21 +14,8 @@ DEF_SERVER_SEND_COMMAND(PACKET_SERVER_SHUTDOWN);
 DEF_SERVER_SEND_COMMAND(PACKET_SERVER_NEWGAME);
 DEF_SERVER_SEND_COMMAND_PARAM(PACKET_SERVER_RCON)(NetworkTCPSocketHandler *cs, uint16 color, const char *command);
 
-bool NetworkFindName(char new_name[NETWORK_CLIENT_NAME_LENGTH]);
-void NetworkServer_HandleChat(NetworkAction action, DestType type, int dest, const char *msg, uint16 from_index);
-
 bool NetworkServer_ReadPackets(NetworkTCPSocketHandler *cs);
 void NetworkServer_Tick(bool send_frame);
-void NetworkServerMonthlyLoop();
-void NetworkServerYearlyLoop();
-
-static inline const char* GetPlayerIP(const NetworkClientInfo* ci)
-{
-	struct in_addr addr;
-
-	addr.s_addr = ci->client_ip;
-	return inet_ntoa(addr);
-}
 
 #else /* ENABLE_NETWORK */
 /* Network function stubs when networking is disabled */
diff --git a/src/network/network_type.h b/src/network/network_type.h
new file mode 100644
index 000000000..17bf382dc
--- /dev/null
+++ b/src/network/network_type.h
@@ -0,0 +1,108 @@
+/* $Id$ */
+
+/** @file network_internal.h Variables and function used internally. */
+
+#ifndef NETWORK_TYPE_H
+#define NETWORK_TYPE_H
+
+#ifdef ENABLE_NETWORK
+
+#include "../player_type.h"
+#include "../economy_type.h"
+#include "core/config.h"
+#include "core/game.h"
+
+enum {
+	/**
+	 * How many clients can we have? Like.. MAX_PLAYERS - 1 is the amount of
+	 *  players that can really play.. so.. a max of 4 spectators.. gives us..
+	 *  MAX_PLAYERS + 3
+	 */
+	MAX_CLIENTS = MAX_PLAYERS + 3,
+
+	/** Do not change this next line. It should _ALWAYS_ be MAX_CLIENTS + 1 */
+	MAX_CLIENT_INFO = MAX_CLIENTS + 1,
+
+	/** Maximum number of internet interfaces supported. */
+	MAX_INTERFACES = 9,
+
+	/** How many vehicle/station types we put over the network */
+	NETWORK_VEHICLE_TYPES = 5,
+	NETWORK_STATION_TYPES = 5,
+
+	NETWORK_SERVER_INDEX = 1,
+	NETWORK_EMPTY_INDEX  = 0,
+};
+
+struct NetworkPlayerInfo {
+	char company_name[NETWORK_NAME_LENGTH];         ///< Company name
+	char password[NETWORK_PASSWORD_LENGTH];         ///< The password for the player
+	Year inaugurated_year;                          ///< What year the company started in
+	Money company_value;                            ///< The company value
+	Money money;                                    ///< The amount of money the company has
+	Money income;                                   ///< How much did the company earned last year
+	uint16 performance;                             ///< What was his performance last month?
+	bool use_password;                              ///< Is there a password
+	uint16 num_vehicle[NETWORK_VEHICLE_TYPES];      ///< How many vehicles are there of this type?
+	uint16 num_station[NETWORK_STATION_TYPES];      ///< How many stations are there of this type?
+	char players[NETWORK_PLAYERS_LENGTH];           ///< The players that control this company (Name1, name2, ..)
+	uint16 months_empty;                            ///< How many months the company is empty
+};
+
+struct NetworkClientInfo {
+	uint16 client_index;                            ///< Index of the client (same as ClientState->index)
+	char client_name[NETWORK_CLIENT_NAME_LENGTH];   ///< Name of the client
+	byte client_lang;                               ///< The language of the client
+	PlayerID client_playas;                         ///< As which player is this client playing (PlayerID)
+	uint32 client_ip;                               ///< IP-address of the client (so he can be banned)
+	Date join_date;                                 ///< Gamedate the player has joined
+	char unique_id[NETWORK_UNIQUE_ID_LENGTH];       ///< Every play sends an unique id so we can indentify him
+};
+
+enum NetworkPasswordType {
+	NETWORK_GAME_PASSWORD,
+	NETWORK_COMPANY_PASSWORD,
+};
+
+enum DestType {
+	DESTTYPE_BROADCAST, ///< Send message/notice to all players (All)
+	DESTTYPE_TEAM,      ///< Send message/notice to everyone playing the same company (Team)
+	DESTTYPE_CLIENT,    ///< Send message/notice to only a certain player (Private)
+};
+
+/** Actions that can be used for NetworkTextMessage */
+enum NetworkAction {
+	NETWORK_ACTION_JOIN,
+	NETWORK_ACTION_LEAVE,
+	NETWORK_ACTION_SERVER_MESSAGE,
+	NETWORK_ACTION_CHAT,
+	NETWORK_ACTION_CHAT_COMPANY,
+	NETWORK_ACTION_CHAT_CLIENT,
+	NETWORK_ACTION_GIVE_MONEY,
+	NETWORK_ACTION_NAME_CHANGE,
+};
+
+enum NetworkErrorCode {
+	NETWORK_ERROR_GENERAL, // Try to use this one like never
+
+	/* Signals from clients */
+	NETWORK_ERROR_DESYNC,
+	NETWORK_ERROR_SAVEGAME_FAILED,
+	NETWORK_ERROR_CONNECTION_LOST,
+	NETWORK_ERROR_ILLEGAL_PACKET,
+	NETWORK_ERROR_NEWGRF_MISMATCH,
+
+	/* Signals from servers */
+	NETWORK_ERROR_NOT_AUTHORIZED,
+	NETWORK_ERROR_NOT_EXPECTED,
+	NETWORK_ERROR_WRONG_REVISION,
+	NETWORK_ERROR_NAME_IN_USE,
+	NETWORK_ERROR_WRONG_PASSWORD,
+	NETWORK_ERROR_PLAYER_MISMATCH, // Happens in CLIENT_COMMAND
+	NETWORK_ERROR_KICKED,
+	NETWORK_ERROR_CHEATER,
+	NETWORK_ERROR_FULL,
+};
+
+#endif /* ENABLE_NETWORK */
+#endif /* NETWORK_TYPE_H */
diff --git a/src/network/network_udp.cpp b/src/network/network_udp.cpp
index ef533356b..33c9d108f 100644
--- a/src/network/network_udp.cpp
+++ b/src/network/network_udp.cpp
@@ -11,11 +11,11 @@
 
 #include "../stdafx.h"
 #include "../debug.h"
-#include "network_data.h"
 #include "../date_func.h"
 #include "../map_func.h"
 #include "network_gamelist.h"
 #include "network_udp.h"
+#include "network_internal.h"
 #include "../variables.h"
 #include "../newgrf_config.h"
 #include "../core/endian_func.hpp"
diff --git a/src/newgrf_config.cpp b/src/newgrf_config.cpp
index 03cb0aa41..0c8e0dbd2 100644
--- a/src/newgrf_config.cpp
+++ b/src/newgrf_config.cpp
@@ -8,11 +8,11 @@
 #include "variables.h"
 #include "saveload.h"
 #include "md5.h"
-#include "network/network_data.h"
 #include "newgrf.h"
 #include "newgrf_config.h"
 #include "core/alloc_func.hpp"
 #include "string_func.h"
+#include "network/network_type.h"
 
 #include "fileio.h"
 #include "fios.h"
diff --git a/src/openttd.cpp b/src/openttd.cpp
index f4328dcfc..2e5e4a674 100644
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -6,7 +6,6 @@
 
 #define VARDEF
 #include "variables.h"
-#include "network/network_internal.h"
 #undef VARDEF
 
 #include "openttd.h"
@@ -41,6 +40,7 @@
 #include "console_func.h"
 #include "screenshot.h"
 #include "network/network.h"
+#include "network/network_func.h"
 #include "signs_base.h"
 #include "signs_func.h"
 #include "waypoint.h"
diff --git a/src/player_gui.cpp b/src/player_gui.cpp
index 82caca50f..8f1b558da 100644
--- a/src/player_gui.cpp
+++ b/src/player_gui.cpp
@@ -13,14 +13,12 @@
 #include "player_base.h"
 #include "command_func.h"
 #include "network/network.h"
+#include "network/network_gui.h"
 #include "variables.h"
 #include "roadveh.h"
 #include "train.h"
 #include "aircraft.h"
 #include "newgrf.h"
-#include "network/network_data.h"
-#include "network/network_client.h"
-#include "network/network_gui.h"
 #include "player_face.h"
 #include "strings_func.h"
 #include "functions.h"
diff --git a/src/players.cpp b/src/players.cpp
index d8ea6a6e9..66338609d 100644
--- a/src/players.cpp
+++ b/src/players.cpp
@@ -13,7 +13,7 @@
 #include "saveload.h"
 #include "command_func.h"
 #include "network/network.h"
-#include "network/network_internal.h"
+#include "network/network_func.h"
 #include "variables.h"
 #include "cheat_func.h"
 #include "ai/ai.h"
diff --git a/src/settings.cpp b/src/settings.cpp
index ff3ff8d86..f0d981ddf 100644
--- a/src/settings.cpp
+++ b/src/settings.cpp
@@ -25,10 +25,7 @@
 #include "screenshot.h"
 #include "variables.h"
 #include "network/network.h"
-#include "network/network_data.h"
-#include "network/network_client.h"
-#include "network/network_server.h"
-#include "network/network_udp.h"
+#include "network/network_func.h"
 #include "settings_internal.h"
 #include "command_func.h"
 #include "console_func.h"
@@ -1446,23 +1443,7 @@ static int32 UpdateMinPlayers(int32 p1)
 
 static int32 UpdatePlayerName(int32 p1)
 {
-	NetworkClientInfo *ci = NetworkFindClientInfoFromIndex(_network_own_client_index);
-
-	if (ci == NULL) return 0;
-
-	/* Don't change the name if it is the same as the old name */
-	if (strcmp(ci->client_name, _settings_client.network.player_name) != 0) {
-		if (!_network_server) {
-			SEND_COMMAND(PACKET_CLIENT_SET_NAME)(_settings_client.network.player_name);
-		} else {
-			if (NetworkFindName(_settings_client.network.player_name)) {
-				NetworkTextMessage(NETWORK_ACTION_NAME_CHANGE, CC_DEFAULT, false, ci->client_name, "%s", _settings_client.network.player_name);
-				ttd_strlcpy(ci->client_name, _settings_client.network.player_name, sizeof(ci->client_name));
-				NetworkUpdateClientInfo(NETWORK_SERVER_INDEX);
-			}
-		}
-	}
-
+	NetworkUpdatePlayerName();
 	return 0;
 }
 
diff --git a/src/vehicle.cpp b/src/vehicle.cpp
index 3bd930b82..5d57e0dba 100644
--- a/src/vehicle.cpp
+++ b/src/vehicle.cpp
@@ -25,7 +25,6 @@
 #include "industry_map.h"
 #include "station_map.h"
 #include "water_map.h"
-#include "network/network.h"
 #include "yapf/yapf.h"
 #include "newgrf_callbacks.h"
 #include "newgrf_engine.h"