This needs patching on all other games. I assume it can't be done without dhooks?
Edit: updated script. tickrate limit caused too many false positives on l4d2
Edit 2: removing tickerate limit. The exploit sends 128 packets per sec, so setting 92 as limit.
Code:
#pragma semicolon 1
#include <sourcemod>
#include <sdktools>
#include <voiceannounce_ex>
#pragma newdecls required
#define PATH "logs/voicedata_crashfix.log"
#define PLUGIN_VERSION "1.0.2"
ConVar maxVoicePackets;
ConVar punishment;
int g_voicePacketCount[MAXPLAYERS+1];
int iPunishMent;
int iMaxVoicePackets;
public Plugin myinfo =
{
name = "Voice Data Crash Fix",
author = "Ember & V1sual",
description = "Punishes players who are overflowing voice data to crash the server",
version = PLUGIN_VERSION,
url = ""
};
public void OnPluginStart()
{
punishment = CreateConVar("sm_voicedatafix_punishment", "1", "Punishment. 1 = Kick, 2 = Perm ban", _, true, 1.0, true, 2.0);
maxVoicePackets = CreateConVar("sm_voicedatafix_count", "92", "How many packets per second max?", FCVAR_PROTECTED);
iPunishMent = punishment.IntValue;
iMaxVoicePackets = maxVoicePackets.IntValue;
punishment.AddChangeHook(OnConVarHook);
maxVoicePackets.AddChangeHook(OnConVarHook);
}
public void OnConVarHook(ConVar cvar, const char[] oldVal, const char[] newVal)
{
if (cvar == punishment)
{
iPunishMent = cvar.IntValue;
}
else if (cvar == maxVoicePackets)
{
iMaxVoicePackets = cvar.IntValue;
}
}
public void OnMapStart()
{
CreateTimer(1.0, ResetCount, _, TIMER_REPEAT|TIMER_FLAG_NO_MAPCHANGE);
}
public Action ResetCount(Handle timer)
{
for (int i = 1; i <= MaxClients; i++)
{
g_voicePacketCount[i] = 0;
}
return Plugin_Continue;
}
public void OnClientSpeakingEx(int client)
{
if (++g_voicePacketCount[client] > iMaxVoicePackets)
{
SetClientListeningFlags(client, VOICE_MUTED);
char id[64], ip[32];
GetClientAuthId(client, AuthId_Steam2, id, sizeof(id));
GetClientIP(client, ip, sizeof(ip));
LogToPluginFile("%N (ID: %s | IP: %s) was %s for trying to crash the server with voice data overflow. Total packets: %i",
client,
id,
ip,
punishment.IntValue == 1 ? "kicked" : "banned",
g_voicePacketCount[client]);
switch (iPunishMent)
{
case 1:
{
if (!IsClientInKickQueue(client))
{
KickClient(client, "Voice data overflow detected!");
}
}
case 2:
{
ServerCommand("sm_ban #%d 0 \"Voice data overflow detected!\"", GetClientUserId(client));
}
}
}
}
stock void LogToPluginFile(const char[] format, any:...)
{
char f_sBuffer[1024], f_sPath[1024];
VFormat(f_sBuffer, sizeof(f_sBuffer), format, 2);
BuildPath(Path_SM, f_sPath, sizeof(f_sPath), PATH);
LogToFile(f_sPath, "%s", f_sBuffer);
}
Linear Mode
