441 lines
21 KiB
C#
441 lines
21 KiB
C#
using SharedLibraryCore.Helpers;
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using SharedLibraryCore.Interfaces;
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using SharedLibraryCore.Objects;
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using IW4MAdmin.Plugins.Stats.Models;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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namespace IW4MAdmin.Plugins.Stats.Cheat
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{
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class Detection
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{
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public enum DetectionType
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{
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Bone,
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Chest,
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Offset,
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Strain
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};
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int Kills;
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int HitCount;
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Dictionary<IW4Info.HitLocation, int> HitLocationCount;
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ChangeTracking Tracker;
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double AngleDifferenceAverage;
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EFClientStatistics ClientStats;
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DateTime LastHit;
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long LastOffset;
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ILogger Log;
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Strain Strain;
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public Detection(ILogger log, EFClientStatistics clientStats)
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{
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Log = log;
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HitLocationCount = new Dictionary<IW4Info.HitLocation, int>();
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foreach (var loc in Enum.GetValues(typeof(IW4Info.HitLocation)))
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HitLocationCount.Add((IW4Info.HitLocation)loc, 0);
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ClientStats = clientStats;
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Strain = new Strain();
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Tracker = new ChangeTracking();
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}
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/// <summary>
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/// Analyze kill and see if performed by a cheater
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/// </summary>
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/// <param name="kill">kill performed by the player</param>
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/// <returns>true if detection reached thresholds, false otherwise</returns>
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public DetectionPenaltyResult ProcessKill(EFClientKill kill, bool isDamage)
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{
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if ((kill.DeathType != IW4Info.MeansOfDeath.MOD_PISTOL_BULLET &&
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kill.DeathType != IW4Info.MeansOfDeath.MOD_RIFLE_BULLET &&
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kill.DeathType != IW4Info.MeansOfDeath.MOD_HEAD_SHOT) ||
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kill.HitLoc == IW4Info.HitLocation.none)
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return new DetectionPenaltyResult()
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{
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ClientPenalty = Penalty.PenaltyType.Any,
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};
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DetectionPenaltyResult result = null;
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if (LastHit == DateTime.MinValue)
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LastHit = DateTime.UtcNow;
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HitLocationCount[kill.HitLoc]++;
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if (!isDamage)
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{
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Kills++;
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}
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HitCount++;
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#region VIEWANGLES
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if (kill.AnglesList.Count >= 2)
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{
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double realAgainstPredict = Vector3.ViewAngleDistance(kill.AnglesList[0], kill.AnglesList[1], kill.ViewAngles);
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// LIFETIME
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var hitLoc = ClientStats.HitLocations
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.First(hl => hl.Location == kill.HitLoc);
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float previousAverage = hitLoc.HitOffsetAverage;
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double newAverage = (previousAverage * (hitLoc.HitCount - 1) + realAgainstPredict) / hitLoc.HitCount;
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hitLoc.HitOffsetAverage = (float)newAverage;
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if (hitLoc.HitOffsetAverage > Thresholds.MaxOffset &&
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hitLoc.HitCount > 100)
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{
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Log.WriteDebug("*** Reached Max Lifetime Average for Angle Difference ***");
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Log.WriteDebug($"Lifetime Average = {newAverage}");
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Log.WriteDebug($"Bone = {hitLoc.Location}");
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Log.WriteDebug($"HitCount = {hitLoc.HitCount}");
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Log.WriteDebug($"ID = {kill.AttackerId}");
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result = new DetectionPenaltyResult()
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{
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ClientPenalty = Penalty.PenaltyType.Ban,
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Value = hitLoc.HitOffsetAverage,
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HitCount = hitLoc.HitCount,
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Type = DetectionType.Offset
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};
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}
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// SESSION
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double sessAverage = (AngleDifferenceAverage * (HitCount - 1) + realAgainstPredict) / HitCount;
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AngleDifferenceAverage = sessAverage;
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if (sessAverage > Thresholds.MaxOffset &&
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HitCount > 30)
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{
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Log.WriteDebug("*** Reached Max Session Average for Angle Difference ***");
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Log.WriteDebug($"Session Average = {sessAverage}");
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Log.WriteDebug($"HitCount = {HitCount}");
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Log.WriteDebug($"ID = {kill.AttackerId}");
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result = new DetectionPenaltyResult()
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{
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ClientPenalty = Penalty.PenaltyType.Ban,
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Value = sessAverage,
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HitCount = HitCount,
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Type = DetectionType.Offset,
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Location = hitLoc.Location
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};
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}
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#if DEBUG
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Log.WriteDebug($"PredictVsReal={realAgainstPredict}");
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#endif
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}
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double currentStrain = Strain.GetStrain(isDamage, kill.Damage, kill.Distance / 0.0254, kill.ViewAngles, Math.Max(50, kill.TimeOffset - LastOffset));
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//double currentWeightedStrain = (currentStrain * ClientStats.SPM) / 170.0;
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LastOffset = kill.TimeOffset;
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if (currentStrain > ClientStats.MaxStrain)
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{
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ClientStats.MaxStrain = currentStrain;
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}
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// flag
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if (currentStrain > Thresholds.MaxStrainFlag)
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{
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result = new DetectionPenaltyResult()
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{
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ClientPenalty = Penalty.PenaltyType.Flag,
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Value = currentStrain,
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HitCount = HitCount,
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Type = DetectionType.Strain
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};
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}
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// ban
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if (currentStrain > Thresholds.MaxStrainBan)
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{
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result = new DetectionPenaltyResult()
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{
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ClientPenalty = Penalty.PenaltyType.Ban,
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Value = currentStrain,
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HitCount = HitCount,
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Type = DetectionType.Strain
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};
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}
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#if DEBUG
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Log.WriteDebug($"Current Strain: {currentStrain}");
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#endif
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#endregion
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#region SESSION_RATIOS
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if (Kills >= Thresholds.LowSampleMinKills)
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{
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double marginOfError = Thresholds.GetMarginOfError(HitCount);
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// determine what the max headshot percentage can be for current number of kills
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double lerpAmount = Math.Min(1.0, (HitCount - Thresholds.LowSampleMinKills) / (double)(/*Thresholds.HighSampleMinKills*/ 60 - Thresholds.LowSampleMinKills));
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double maxHeadshotLerpValueForFlag = Thresholds.Lerp(Thresholds.HeadshotRatioThresholdLowSample(2.0), Thresholds.HeadshotRatioThresholdHighSample(2.0), lerpAmount) + marginOfError;
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double maxHeadshotLerpValueForBan = Thresholds.Lerp(Thresholds.HeadshotRatioThresholdLowSample(3.5), Thresholds.HeadshotRatioThresholdHighSample(3.5), lerpAmount) + marginOfError;
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// determine what the max bone percentage can be for current number of kills
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double maxBoneRatioLerpValueForFlag = Thresholds.Lerp(Thresholds.BoneRatioThresholdLowSample(2.25), Thresholds.BoneRatioThresholdHighSample(2.25), lerpAmount) + marginOfError;
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double maxBoneRatioLerpValueForBan = Thresholds.Lerp(Thresholds.BoneRatioThresholdLowSample(3.25), Thresholds.BoneRatioThresholdHighSample(3.25), lerpAmount) + marginOfError;
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// calculate headshot ratio
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double currentHeadshotRatio = ((HitLocationCount[IW4Info.HitLocation.head] + HitLocationCount[IW4Info.HitLocation.helmet] + HitLocationCount[IW4Info.HitLocation.neck]) / (double)HitCount);
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// calculate maximum bone
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double currentMaxBoneRatio = (HitLocationCount.Values.Select(v => v / (double)HitCount).Max());
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var bone = HitLocationCount.FirstOrDefault(b => b.Value == HitLocationCount.Values.Max()).Key;
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#region HEADSHOT_RATIO
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// flag on headshot
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if (currentHeadshotRatio > maxHeadshotLerpValueForFlag)
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{
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// ban on headshot
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if (currentHeadshotRatio > maxHeadshotLerpValueForFlag)
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{
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Log.WriteDebug("**Maximum Headshot Ratio Reached For Ban**");
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Log.WriteDebug($"ClientId: {kill.AttackerId}");
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Log.WriteDebug($"**HitCount: {HitCount}");
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Log.WriteDebug($"**Ratio {currentHeadshotRatio}");
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Log.WriteDebug($"**MaxRatio {maxHeadshotLerpValueForFlag}");
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var sb = new StringBuilder();
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foreach (var kvp in HitLocationCount)
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sb.Append($"HitLocation: {kvp.Key} -> {kvp.Value}\r\n");
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Log.WriteDebug(sb.ToString());
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result = new DetectionPenaltyResult()
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{
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ClientPenalty = Penalty.PenaltyType.Ban,
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Value = currentHeadshotRatio,
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Location = IW4Info.HitLocation.head,
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HitCount = HitCount,
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Type = DetectionType.Bone
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};
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}
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else
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{
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Log.WriteDebug("**Maximum Headshot Ratio Reached For Flag**");
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Log.WriteDebug($"ClientId: {kill.AttackerId}");
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Log.WriteDebug($"**HitCount: {HitCount}");
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Log.WriteDebug($"**Ratio {currentHeadshotRatio}");
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Log.WriteDebug($"**MaxRatio {maxHeadshotLerpValueForFlag}");
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var sb = new StringBuilder();
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foreach (var kvp in HitLocationCount)
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sb.Append($"HitLocation: {kvp.Key} -> {kvp.Value}\r\n");
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Log.WriteDebug(sb.ToString());
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result = new DetectionPenaltyResult()
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{
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ClientPenalty = Penalty.PenaltyType.Flag,
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Value = currentHeadshotRatio,
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Location = IW4Info.HitLocation.head,
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HitCount = HitCount,
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Type = DetectionType.Bone
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};
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}
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}
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#endregion
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#region BONE_RATIO
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// flag on bone ratio
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else if (currentMaxBoneRatio > maxBoneRatioLerpValueForFlag)
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{
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// ban on bone ratio
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if (currentMaxBoneRatio > maxBoneRatioLerpValueForBan)
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{
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Log.WriteDebug("**Maximum Bone Ratio Reached For Ban**");
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Log.WriteDebug($"ClientId: {kill.AttackerId}");
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Log.WriteDebug($"**HitCount: {HitCount}");
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Log.WriteDebug($"**Ratio {currentMaxBoneRatio}");
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Log.WriteDebug($"**MaxRatio {maxBoneRatioLerpValueForBan}");
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var sb = new StringBuilder();
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foreach (var kvp in HitLocationCount)
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sb.Append($"HitLocation: {kvp.Key} -> {kvp.Value}\r\n");
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Log.WriteDebug(sb.ToString());
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result = new DetectionPenaltyResult()
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{
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ClientPenalty = Penalty.PenaltyType.Ban,
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Value = currentMaxBoneRatio,
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Location = bone,
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HitCount = HitCount,
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Type = DetectionType.Bone
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};
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}
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else
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{
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Log.WriteDebug("**Maximum Bone Ratio Reached For Flag**");
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Log.WriteDebug($"ClientId: {kill.AttackerId}");
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Log.WriteDebug($"**HitCount: {HitCount}");
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Log.WriteDebug($"**Ratio {currentMaxBoneRatio}");
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Log.WriteDebug($"**MaxRatio {maxBoneRatioLerpValueForFlag}");
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var sb = new StringBuilder();
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foreach (var kvp in HitLocationCount)
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sb.Append($"HitLocation: {kvp.Key} -> {kvp.Value}\r\n");
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Log.WriteDebug(sb.ToString());
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result = new DetectionPenaltyResult()
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{
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ClientPenalty = Penalty.PenaltyType.Flag,
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Value = currentMaxBoneRatio,
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Location = bone,
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HitCount = HitCount,
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Type = DetectionType.Bone
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};
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}
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}
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#endregion
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}
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#region CHEST_ABDOMEN_RATIO_SESSION
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int chestHits = HitLocationCount[IW4Info.HitLocation.torso_upper];
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if (chestHits >= Thresholds.MediumSampleMinKills)
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{
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double marginOfError = Thresholds.GetMarginOfError(chestHits);
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double lerpAmount = Math.Min(1.0, (chestHits - Thresholds.MediumSampleMinKills) / (double)(Thresholds.HighSampleMinKills - Thresholds.LowSampleMinKills));
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// determine max acceptable ratio of chest to abdomen kills
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double chestAbdomenRatioLerpValueForFlag = Thresholds.Lerp(Thresholds.ChestAbdomenRatioThresholdLowSample(3), Thresholds.ChestAbdomenRatioThresholdHighSample(3), lerpAmount) + marginOfError;
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double chestAbdomenLerpValueForBan = Thresholds.Lerp(Thresholds.ChestAbdomenRatioThresholdLowSample(4), Thresholds.ChestAbdomenRatioThresholdHighSample(4), lerpAmount) + marginOfError;
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double currentChestAbdomenRatio = HitLocationCount[IW4Info.HitLocation.torso_upper] / (double)HitLocationCount[IW4Info.HitLocation.torso_lower];
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if (currentChestAbdomenRatio > chestAbdomenRatioLerpValueForFlag)
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{
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if (currentChestAbdomenRatio > chestAbdomenLerpValueForBan && chestHits >= Thresholds.MediumSampleMinKills + 30)
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{
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Log.WriteDebug("**Maximum Chest/Abdomen Ratio Reached For Ban**");
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Log.WriteDebug($"ClientId: {kill.AttackerId}");
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Log.WriteDebug($"**Chest Hits: {chestHits}");
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Log.WriteDebug($"**Ratio {currentChestAbdomenRatio}");
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Log.WriteDebug($"**MaxRatio {chestAbdomenLerpValueForBan}");
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var sb = new StringBuilder();
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foreach (var kvp in HitLocationCount)
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sb.Append($"HitLocation: {kvp.Key} -> {kvp.Value}\r\n");
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Log.WriteDebug(sb.ToString());
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result = new DetectionPenaltyResult()
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{
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ClientPenalty = Penalty.PenaltyType.Ban,
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Value = currentChestAbdomenRatio,
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Location = IW4Info.HitLocation.torso_upper,
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Type = DetectionType.Chest,
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HitCount = chestHits
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};
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}
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else
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{
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Log.WriteDebug("**Maximum Chest/Abdomen Ratio Reached For Flag**");
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Log.WriteDebug($"ClientId: {kill.AttackerId}");
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Log.WriteDebug($"**Chest Hits: {chestHits}");
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Log.WriteDebug($"**Ratio {currentChestAbdomenRatio}");
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Log.WriteDebug($"**MaxRatio {chestAbdomenRatioLerpValueForFlag}");
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var sb = new StringBuilder();
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foreach (var kvp in HitLocationCount)
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sb.Append($"HitLocation: {kvp.Key} -> {kvp.Value}\r\n");
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Log.WriteDebug(sb.ToString());
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// Log.WriteDebug($"ThresholdReached: {AboveThresholdCount}");
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result = new DetectionPenaltyResult()
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{
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ClientPenalty = Penalty.PenaltyType.Flag,
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Value = currentChestAbdomenRatio,
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Location = IW4Info.HitLocation.torso_upper,
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Type = DetectionType.Chest,
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HitCount = chestHits
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};
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}
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}
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}
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#endregion
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#endregion
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Tracker.OnChange(new DetectionTracking(ClientStats, kill, Strain));
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if (result != null)
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{
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foreach (string change in Tracker.GetChanges())
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{
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Log.WriteDebug(change);
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Log.WriteDebug("--------------SNAPSHOT END-----------");
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}
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}
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return result ?? new DetectionPenaltyResult()
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{
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ClientPenalty = Penalty.PenaltyType.Any,
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};
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}
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public DetectionPenaltyResult ProcessTotalRatio(EFClientStatistics stats)
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{
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int totalChestHits = stats.HitLocations.Single(c => c.Location == IW4Info.HitLocation.torso_upper).HitCount;
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if (totalChestHits >= 60)
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{
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double marginOfError = Thresholds.GetMarginOfError(totalChestHits);
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double lerpAmount = Math.Min(1.0, (totalChestHits - 60) / 250.0);
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// determine max acceptable ratio of chest to abdomen kills
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double chestAbdomenRatioLerpValueForFlag = Thresholds.Lerp(Thresholds.ChestAbdomenRatioThresholdHighSample(3.0), Thresholds.ChestAbdomenRatioThresholdHighSample(2.0), lerpAmount) + marginOfError;
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double chestAbdomenLerpValueForBan = Thresholds.Lerp(Thresholds.ChestAbdomenRatioThresholdHighSample(4.0), Thresholds.ChestAbdomenRatioThresholdHighSample(3.0), lerpAmount) + marginOfError;
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double currentChestAbdomenRatio = totalChestHits /
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stats.HitLocations.Single(hl => hl.Location == IW4Info.HitLocation.torso_lower).HitCount;
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if (currentChestAbdomenRatio > chestAbdomenRatioLerpValueForFlag)
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{
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if (currentChestAbdomenRatio > chestAbdomenLerpValueForBan)
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{
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Log.WriteDebug("**Maximum Lifetime Chest/Abdomen Ratio Reached For Ban**");
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Log.WriteDebug($"ClientId: {stats.ClientId}");
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Log.WriteDebug($"**Total Chest Hits: {totalChestHits}");
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Log.WriteDebug($"**Ratio {currentChestAbdomenRatio}");
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Log.WriteDebug($"**MaxRatio {chestAbdomenLerpValueForBan}");
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var sb = new StringBuilder();
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foreach (var location in stats.HitLocations)
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sb.Append($"HitLocation: {location.Location} -> {location.HitCount}\r\n");
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Log.WriteDebug(sb.ToString());
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return new DetectionPenaltyResult()
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{
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ClientPenalty = Penalty.PenaltyType.Ban,
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Value = currentChestAbdomenRatio,
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Location = IW4Info.HitLocation.torso_upper,
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HitCount = totalChestHits,
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Type = DetectionType.Chest
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};
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}
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else
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{
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Log.WriteDebug("**Maximum Lifetime Chest/Abdomen Ratio Reached For Flag**");
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Log.WriteDebug($"ClientId: {stats.ClientId}");
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Log.WriteDebug($"**Total Chest Hits: {totalChestHits}");
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Log.WriteDebug($"**Ratio {currentChestAbdomenRatio}");
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Log.WriteDebug($"**MaxRatio {chestAbdomenRatioLerpValueForFlag}");
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var sb = new StringBuilder();
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foreach (var location in stats.HitLocations)
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sb.Append($"HitLocation: {location.Location} -> {location.HitCount}\r\n");
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Log.WriteDebug(sb.ToString());
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return new DetectionPenaltyResult()
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{
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ClientPenalty = Penalty.PenaltyType.Flag,
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Value = currentChestAbdomenRatio,
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Location = IW4Info.HitLocation.torso_upper,
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HitCount = totalChestHits,
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Type = DetectionType.Chest
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};
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}
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}
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}
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return new DetectionPenaltyResult()
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{
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ClientPenalty = Penalty.PenaltyType.Any
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};
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}
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}
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}
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