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path: root/MCServer/Plugins/Core/console.lua
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-- Implements things related to console commands

function InitConsoleCommands()
	local PluginMgr = cPluginManager:Get();
	
	-- Please keep the list alpha-sorted
	PluginMgr:BindConsoleCommand("ban",                  HandleConsoleBan,                  " ~ Bans a player by name");
	PluginMgr:BindConsoleCommand("banlist ips",          HandleConsoleBanList,              " - Lists all players banned by IP");
	PluginMgr:BindConsoleCommand("banlist",              HandleConsoleBanList,              " - Lists all players banned by name");
	PluginMgr:BindConsoleCommand("getversion",           HandleConsoleVersion,              " - Gets server version reported to 1.4+ clients");
	PluginMgr:BindConsoleCommand("help",                 HandleConsoleHelp,                 " - Lists all commands");
	PluginMgr:BindConsoleCommand("give",                 HandleConsoleGive,                 " - Gives items to the specified player.")
	PluginMgr:BindConsoleCommand("list",                 HandleConsoleList,                 " - Lists all players in a machine-readable format");
	PluginMgr:BindConsoleCommand("listgroups",           HandleConsoleListGroups,           " - Shows a list of all the groups");
	PluginMgr:BindConsoleCommand("numchunks",            HandleConsoleNumChunks,            " - Shows number of chunks currently loaded");
	PluginMgr:BindConsoleCommand("players",              HandleConsolePlayers,              " - Lists all connected players");
	PluginMgr:BindConsoleCommand("rank",                 HandleConsoleRank,                 " ~ Add a player to a group");
	PluginMgr:BindConsoleCommand("reload",               HandleConsoleReload,               " - Reloads all plugins");
	PluginMgr:BindConsoleCommand("save-all",             HandleConsoleSaveAll,              " - Saves all chunks");
	PluginMgr:BindConsoleCommand("say",                  HandleConsoleSay,                  " - Sends a chat message to all players");
	PluginMgr:BindConsoleCommand("setversion",           HandleConsoleVersion,              " ~ Sets server version reported to 1.4+ clients");
	PluginMgr:BindConsoleCommand("unban",                HandleConsoleUnban,                " ~ Unbans a player by name");
	PluginMgr:BindConsoleCommand("unload",               HandleConsoleUnload,               " - Unloads all unused chunks");
	
end

function HandleConsoleGive(Split)

	-- Make sure there are a correct number of arguments.
	if #Split ~= 3 and #Split ~= 4 and #Split ~= 5 then
		return true, "Usage: give <player> <item> [amount] [meta]"
	end

	-- Get the item from the arguments and check it's valid.
	local Item = cItem()
	if #Split == 5 then
		local FoundItem = StringToItem(Split[3] .. ":" .. Split[5], Item)
	else
		local FoundItem = StringToItem(Split[3], Item)
	end	
	if not IsValidItem(Item.m_ItemType) then  -- StringToItem does not check if item is valid
		FoundItem = false
	end

	if not FoundItem  then
		return true, "Invalid item id or name!"
	end

	-- Work out how many items the user wants.
	local ItemAmount = 1
	if #Split > 3 then
		ItemAmount = tonumber(Split[4])
		if ItemAmount == nil or ItemAmount < 1 or ItemAmount > 512 then
			return true, "Invalid amount!"
		end
	end

	Item.m_ItemCount = ItemAmount

	-- Get the playername from the split.
	local playerName = Split[2]

	local function giveItems(newPlayer)
		local ItemsGiven = newPlayer:GetInventory():AddItem(Item)
		if ItemsGiven == ItemAmount then
			newPlayer:SendMessage(cChatColor.Green .. "[INFO] " .. cChatColor.White .. "There you go!" )
			LOG("Gave " .. newPlayer:GetName() .. " " .. Item.m_ItemCount .. " times " .. Item.m_ItemType .. ":" .. Item.m_ItemDamage)
		else
			Player:SendMessage( cChatColor.Rose .. "[INFO] " .. cChatColor.White .. "Not enough space in inventory, only gave " .. ItemsGiven)
			return true, "Only " .. Item.m_ItemCount .. " out of " .. ItemsGiven .. "items could be delivered.")
		end
	end

	-- Finally give the items to the player.
	itemStatus = cRoot:Get():FindAndDoWithPlayer(playerName, giveItems)

	-- Check to make sure that giving items was successful.
	if not itemStatus then
		return true, "There was no player that matched your query."
	end

	return true

end
end

function HandleConsoleBan(Split)
	if (#Split < 2) then
		return true, "Usage: ban [Player] <Reason>";
	end	
	
	local Reason = cChatColor.Red .. "You have been banned." .. cChatColor.White .. " Did you do something illegal?"
	if( #Split > 2 ) then
		Reason = table.concat(Split, " ", 3)
	end
	
	if KickPlayer(Split[2], Reason) == false then
		BannedPlayersIni:DeleteValue("Banned", Split[2])
		BannedPlayersIni:SetValueB("Banned", Split[2], true)
		BannedPlayersIni:WriteFile()
		LOGINFO("Could not find player, but banned anyway" )
	else
		BannedPlayersIni:DeleteValue("Banned", Split[2])
		BannedPlayersIni:SetValueB("Banned", Split[2], true)
		BannedPlayersIni:WriteFile()
		LOGINFO("Successfully kicked and banned player" )
	end

	return true
end

function HandleConsoleUnban(Split)
	if( #Split < 2 ) then		
		return true, "Usage: unban [Player]"
	end
	
	if( BannedPlayersIni:GetValueB("Banned", Split[2], false) == false ) then
		return true, Split[2] .. " is not banned!"
	end
	
	BannedPlayersIni:SetValueB("Banned", Split[2], false, false)
	BannedPlayersIni:WriteFile()

	local Server = cRoot:Get():GetServer()
	return true, "Unbanned " .. Split[2]
end

function HandleConsoleBanList(Split)
	if (#Split == 1) then
		return true, BanListByName();
	end
	
	if (string.lower(Split[2]) == "ips") then
		return true, BanListByIPs();
	end
	
	return true, "Unknown banlist subcommand";
end

function HandleConsoleHelp(Split)
	local Commands = {};   -- {index => {"Command", "HelpString"} }
	local MaxLength = 0;
	local AddToTable = function(Command, HelpString)
		table.insert(Commands, { Command, HelpString });
		local CmdLen = Command:len();
		if (CmdLen > MaxLength) then
			MaxLength = CmdLen;
		end
	end
	
	cPluginManager:Get():ForEachConsoleCommand(AddToTable);
	
	-- Sort the table:
	local CompareCommands = function(a, b)
		return a[1] < b[1];  -- compare command strings
	end
	table.sort(Commands, CompareCommands);
	
	local Out = "";
	Out = "'-' denotes no prefix, '~' denotes that a value is required.\n"
	for i, Command in ipairs(Commands) do
		Out = Out .. Command[1] .. string.rep(" ", MaxLength - Command[1]:len());  -- Align to a table
		Out = Out .. Command[2] .. "\n";
	end
	return true, Out;
end

function HandleConsoleList(Split)
	-- Get a list of all players, one playername per line
	local Out = "";
	cRoot:Get():ForEachWorld(
		function (a_World)
			a_World:ForEachPlayer(
				function (a_Player)
					Out = Out .. a_Player:GetName() .. "\n";
				end
			);
		end
	);
	return true, Out;
end

function HandleConsoleListGroups(Split)
	-- Read the groups.ini file:
	local GroupsIni = cIniFile("groups.ini");
	if (not(GroupsIni:ReadFile())) then
		return true, "No groups found";
	end
	
	-- Read the groups:
	Number = GroupsIni:NumKeys();
	Groups = {};
	for i = 0, Number do
		table.insert(Groups, GroupsIni:KeyName(i))
	end
	
	-- Output the groups, concatenated to a string:
	local Out = "Groups:\n"
	Out = Out .. table.concat(Groups, ", ");
	return true, Out;
end

function HandleConsoleNumChunks(Split)
	local Output = {};
	local AddNumChunks = function(World)
		Output[World:GetName()] = World:GetNumChunks();
	end;
	
	cRoot:Get():ForEachWorld(AddNumChunks);
	
	local Total = 0;
	local Out = "";
	for name, num in pairs(Output) do
		Out = Out .. "  " .. name .. ": " .. num .. " chunks\n";
		Total = Total + num;
	end
	Out = Out .. "Total: " .. Total .. " chunks\n";
	
	return true, Out;
end

function HandleConsolePlayers(Split)
	local PlayersInWorlds = {};    -- "WorldName" => [players array]
	local AddToTable = function(Player)
		local WorldName = Player:GetWorld():GetName();
		if (PlayersInWorlds[WorldName] == nil) then
			PlayersInWorlds[WorldName] = {};
		end
		table.insert(PlayersInWorlds[WorldName], Player:GetName() .. " @ " ..  Player:GetIP());
	end
	
	cRoot:Get():ForEachPlayer(AddToTable);
	
	local Out = "";
	for WorldName, Players in pairs(PlayersInWorlds) do
		Out = Out .. "World " .. WorldName .. ":\n";
		for i, PlayerName in ipairs(Players) do
			Out = Out .. "  " .. PlayerName .. "\n";
		end
	end
	
	return true, Out;
end

function HandleConsoleVersion(Split)
	if (#Split == 1) then
		-- Display current version:
		local Version = cRoot:Get():GetPrimaryServerVersion();
		return true, "Primary server version: #" .. Version .. ", " .. cRoot:GetProtocolVersionTextFromInt(Version);
	end
	
	-- Set new value as the version:
	cRoot:Get():SetPrimaryServerVersion(tonumber(Split[2]));
	local Version = cRoot:Get():GetPrimaryServerVersion();
	return true, "Primary server version is now #" .. Version .. ", " .. cRoot:GetProtocolVersionTextFromInt(Version);
end

function HandleConsoleRank(Split)
	if (Split[2] == nil) or (Split[3] == nil) then
		return true, "Usage: /rank [Player] [Group]";
	end
	local Out = "";
	
	-- Read the groups.ini file:
	local GroupsIni = cIniFile("groups.ini")
	if (not(GroupsIni:ReadFile())) then
		Out = "Could not read groups.ini, creating anew!\n"
	end
	
	-- Find the group:
	if (GroupsIni:FindKey(Split[3]) == -1) then
		return true, Out .. "Group does not exist";
	end
	
	-- Read the users.ini file:
	local UsersIni = cIniFile("users.ini");
	if (not(UsersIni:ReadFile())) then
		Out = Out .. "Could not read users.ini, creating anew!\n";
	end
	
	-- Write the new group value to users.ini:
	UsersIni:DeleteKey(Split[2]);
	UsersIni:GetValueSet(Split[2], "Groups", Split[3]);
	UsersIni:WriteFile();
	
	-- Reload the player's permissions:
	cRoot:Get():ForEachWorld(
		function (World)
			World:ForEachPlayer(
				function (Player)
					if (Player:GetName() == Split[2]) then
						Player:SendMessage(cChatColor.Yellow .. "[INFO] " .. cChatColor.White .. "You were moved to group " .. Split[3]);
						Player:LoadPermissionsFromDisk();
					end
				end
			);
		end
	)

	return true, Out .. "Player " .. Split[2] .. " was moved to " .. Split[3];
end

function HandleConsoleReload(Split)
	Server = cRoot:Get():GetServer();
	Server:SendMessage(cChatColor.Rose .. "[WARNING] " .. cChatColor.White .. "Reloading all plugins!");
	cPluginManager:Get():ReloadPlugins();
	return true;
end

function HandleConsoleSaveAll(Split)
	Server = cRoot:Get():GetServer();
	Server:SendMessage(cChatColor.Rose .. "[WARNING] " .. cChatColor.White .. "Saving all chunks!");
	cRoot:Get():SaveAllChunks();
	return true;
end

function HandleConsoleSay(Split)
	table.remove(Split, 1);
	local Message = "";
	for i, Text in ipairs(Split) do
		Message = Message .. " " .. Text;
	end
	Message = Message:sub(2);  -- Cut off the first space
	cRoot:Get():GetServer():BroadcastChat(cChatColor.Gold .. "[SERVER] " .. cChatColor.Yellow .. Message);
	return true;
end

function HandleConsoleUnload(Split)
	local UnloadChunks = function(World)
		World:UnloadUnusedChunks();
	end
	
	local Out = "Num loaded chunks before: " .. cRoot:Get():GetTotalChunkCount() .. "\n";
	cRoot:Get():ForEachWorld(UnloadChunks);
	Out = Out .. "Num loaded chunks after: " .. cRoot:Get():GetTotalChunkCount();
	return true, Out;
end


-- Helper functions:

--- Returns the list of players banned by name, separated by ", "
function BanListByName()
	local NumValues = BannedPlayersIni:NumValues("Banned");
	local Banned = {};
	local KeyID = BannedPlayersIni:FindKey("Banned");
	for i = 1, NumValues do
		local PlayerName = BannedPlayersIni:ValueName(KeyID, i - 1);
		if (BannedPlayersIni:GetValueB("Banned", PlayerName)) then
			-- Player listed AND banned
			table.insert(Banned, PlayerName);
		end
	end
	return table.concat(Banned, ", ");
end

--- Returns the list of players banned by IP, separated by ", "
function BanListByIPs()
	-- TODO: No IP ban implemented yet
	return "";
end