ds@1952: /**
ds@1952:  * vim: set ts=4 :
ds@1952:  * =============================================================================
ds@1952:  * SourceMod Anti-Flood Plugin
ds@1952:  * Protects against chat flooding.
ds@1952:  *
ds@1952:  * SourceMod (C)2004-2008 AlliedModders LLC.  All rights reserved.
ds@1952:  * =============================================================================
ds@1952:  *
ds@1952:  * This program is free software; you can redistribute it and/or modify it under
ds@1952:  * the terms of the GNU General Public License, version 3.0, as published by the
ds@1952:  * Free Software Foundation.
ds@1952:  * 
ds@1952:  * This program is distributed in the hope that it will be useful, but WITHOUT
ds@1952:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
ds@1952:  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
ds@1952:  * details.
ds@1952:  *
ds@1952:  * You should have received a copy of the GNU General Public License along with
ds@1952:  * this program.  If not, see <http://www.gnu.org/licenses/>.
ds@1952:  *
ds@1952:  * As a special exception, AlliedModders LLC gives you permission to link the
ds@1952:  * code of this program (as well as its derivative works) to "Half-Life 2," the
ds@1952:  * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
ds@1952:  * by the Valve Corporation.  You must obey the GNU General Public License in
ds@1952:  * all respects for all other code used.  Additionally, AlliedModders LLC grants
ds@1952:  * this exception to all derivative works.  AlliedModders LLC defines further
ds@1952:  * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
ds@1952:  * or <http://www.sourcemod.net/license.php>.
ds@1952:  *
ds@1952:  * Version: $Id$
ds@1952:  */
ds@1952: 
ds@1952: #pragma semicolon 1
ds@1952: 
ds@1952: #include <sourcemod>
ds@1952: 
ds@1952: public Plugin:myinfo = 
ds@1952: {
ds@1952: 	name = "Anti-Flood",
ds@1952: 	author = "AlliedModders LLC",
ds@1952: 	description = "Protects against chat flooding",
ds@1952: 	version = SOURCEMOD_VERSION,
ds@1952: 	url = "http://www.sourcemod.net/"
ds@1952: };
ds@1952: 
ds@1952: new Float:g_LastTime[MAXPLAYERS + 1] = {0.0, ...};		/* Last time player used say or say_team */
ds@1952: new g_FloodTokens[MAXPLAYERS + 1] = {0, ...};			/* Number of flood tokens player has */
ds@1952: 
ds@1952: new Handle:sm_flood_time;								/* Handle to sm_flood_time convar */
ds@1952: 
ds@1952: public OnPluginStart()
ds@1952: {
ds@1952: 	sm_flood_time = CreateConVar("sm_flood_time", "0.75", "Amount of time allowed between chat messages");
ds@1952: }
ds@1952: 
ds@1952: public OnClientPutInServer(client)
ds@1952: {
ds@1952: 	g_LastTime[client] = 0.0;
ds@1952: 	g_FloodTokens[client] = 0;
ds@1952: }
ds@1952: 
ds@1952: new Float:max_chat;
ds@1952: 
ds@1952: public bool:OnClientFloodCheck(client)
ds@1952: {
ds@1952: 	max_chat = GetConVarFloat(sm_flood_time);
ds@1952: 	
ds@1952: 	if (max_chat <= 0.0 
ds@1952: 		|| (GetUserFlagBits(client) & ADMFLAG_ROOT) == ADMFLAG_ROOT)
ds@1952: 	{
ds@1952: 		return false;
ds@1952: 	}
ds@1952: 	
ds@1952: 	if (g_LastTime[client] > GetGameTime())
ds@1952: 	{
ds@1952: 		/* If player has 3 or more flood tokens, block their message */
ds@1952: 		if (g_FloodTokens[client] >= 3)
ds@1952: 		{
ds@1952: 			return true;
ds@1952: 		}
ds@1952: 	}
ds@1952: 	
ds@1952: 	return false;
ds@1952: }
ds@1952: 
ds@1952: public OnClientFloodResult(client, bool:blocked)
ds@1952: {
ds@1952: 	if (max_chat <= 0.0 
ds@1952: 		|| (GetUserFlagBits(client) & ADMFLAG_ROOT) == ADMFLAG_ROOT)
ds@1952: 	{
ds@1952: 		return;
ds@1952: 	}
ds@1952: 	
ds@1952: 	new Float:curTime = GetGameTime();
ds@1952: 	new Float:newTime = curTime + max_chat;
ds@1952: 	
ds@1952: 	if (g_LastTime[client] > curTime)
ds@1952: 	{
ds@1952: 		/* If the last message was blocked, update their time limit */
ds@1952: 		if (blocked)
ds@1952: 		{
ds@1952: 			newTime += 3.0;
ds@1952: 		}
ds@1952: 		/* Add one flood token when player goes over chat time limit */
ds@1952: 		else if (g_FloodTokens[client] < 3)
ds@1952: 		{
ds@1952: 			g_FloodTokens[client]++;
ds@1952: 		}
ds@1952: 	}
ds@1952: 	else if (g_FloodTokens[client] > 0)
ds@1952: 	{
ds@1952: 		/* Remove one flood token when player chats within time limit (slow decay) */
ds@1952: 		g_FloodTokens[client]--;
ds@1952: 	}
ds@1952: 	
ds@1952: 	g_LastTime[client] = newTime;
ds@1952: }