IW4M-Admin/Plugins/Stats/Cheat/Detection.cs
RaidMax ed83c4c011 started work on getting the restart functionality in the gamelogserver
fix bug with unbanned players still showing as banned via lock icon
move player based stuff into client class
finally renamed Player to EFClient via partial class
don't try to run this build because it's in between stages
2018-11-05 21:01:29 -06:00

478 lines
22 KiB
C#

using IW4MAdmin.Plugins.Stats.Models;
using SharedLibraryCore.Helpers;
using SharedLibraryCore.Interfaces;
using SharedLibraryCore.Objects;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace IW4MAdmin.Plugins.Stats.Cheat
{
class Detection
{
public enum DetectionType
{
Bone,
Chest,
Offset,
Strain
};
public ChangeTracking<EFACSnapshot> Tracker { get; private set; }
public const int QUEUE_COUNT = 10;
public List<EFClientKill> QueuedHits { get; set; }
int Kills;
int HitCount;
Dictionary<IW4Info.HitLocation, int> HitLocationCount;
double AngleDifferenceAverage;
EFClientStatistics ClientStats;
long LastOffset;
IW4Info.WeaponName LastWeapon;
ILogger Log;
Strain Strain;
readonly DateTime ConnectionTime = DateTime.UtcNow;
public Detection(ILogger log, EFClientStatistics clientStats)
{
Log = log;
HitLocationCount = new Dictionary<IW4Info.HitLocation, int>();
foreach (var loc in Enum.GetValues(typeof(IW4Info.HitLocation)))
{
HitLocationCount.Add((IW4Info.HitLocation)loc, 0);
}
ClientStats = clientStats;
Strain = new Strain();
Tracker = new ChangeTracking<EFACSnapshot>();
QueuedHits = new List<EFClientKill>();
}
/// <summary>
/// Analyze kill and see if performed by a cheater
/// </summary>
/// <param name="hit">kill performed by the player</param>
/// <returns>true if detection reached thresholds, false otherwise</returns>
public DetectionPenaltyResult ProcessHit(EFClientKill hit, bool isDamage)
{
if ((hit.DeathType != IW4Info.MeansOfDeath.MOD_PISTOL_BULLET &&
hit.DeathType != IW4Info.MeansOfDeath.MOD_RIFLE_BULLET &&
hit.DeathType != IW4Info.MeansOfDeath.MOD_HEAD_SHOT) ||
hit.HitLoc == IW4Info.HitLocation.none || hit.TimeOffset - LastOffset < 0 ||
// hack: prevents false positives
(LastWeapon != hit.Weapon && (hit.TimeOffset - LastOffset) == 50))
{
return new DetectionPenaltyResult()
{
ClientPenalty = Penalty.PenaltyType.Any,
};
}
DetectionPenaltyResult result = null;
LastWeapon = hit.Weapon;
HitLocationCount[hit.HitLoc]++;
HitCount++;
if (!isDamage)
{
Kills++;
}
#region VIEWANGLES
if (hit.AnglesList.Count >= 2)
{
double realAgainstPredict = Vector3.ViewAngleDistance(hit.AnglesList[0], hit.AnglesList[1], hit.ViewAngles);
// LIFETIME
var hitLoc = ClientStats.HitLocations
.First(hl => hl.Location == hit.HitLoc);
float previousAverage = hitLoc.HitOffsetAverage;
double newAverage = (previousAverage * (hitLoc.HitCount - 1) + realAgainstPredict) / hitLoc.HitCount;
hitLoc.HitOffsetAverage = (float)newAverage;
if (hitLoc.HitOffsetAverage > Thresholds.MaxOffset(hitLoc.HitCount) &&
hitLoc.HitCount > 100)
{
//Log.WriteDebug("*** Reached Max Lifetime Average for Angle Difference ***");
//Log.WriteDebug($"Lifetime Average = {newAverage}");
//Log.WriteDebug($"Bone = {hitLoc.Location}");
//Log.WriteDebug($"HitCount = {hitLoc.HitCount}");
//Log.WriteDebug($"ID = {hit.AttackerId}");
result = new DetectionPenaltyResult()
{
ClientPenalty = Penalty.PenaltyType.Ban,
Value = hitLoc.HitOffsetAverage,
HitCount = hitLoc.HitCount,
Type = DetectionType.Offset
};
}
// SESSION
double sessAverage = (AngleDifferenceAverage * (HitCount - 1) + realAgainstPredict) / HitCount;
AngleDifferenceAverage = sessAverage;
if (sessAverage > Thresholds.MaxOffset(HitCount) &&
HitCount > 30)
{
//Log.WriteDebug("*** Reached Max Session Average for Angle Difference ***");
//Log.WriteDebug($"Session Average = {sessAverage}");
//Log.WriteDebug($"HitCount = {HitCount}");
//Log.WriteDebug($"ID = {hit.AttackerId}");
result = new DetectionPenaltyResult()
{
ClientPenalty = Penalty.PenaltyType.Ban,
Value = sessAverage,
HitCount = HitCount,
Type = DetectionType.Offset,
Location = hitLoc.Location
};
}
#if DEBUG
Log.WriteDebug($"PredictVsReal={realAgainstPredict}");
#endif
}
double currentStrain = Strain.GetStrain(isDamage, hit.Damage, hit.Distance / 0.0254, hit.ViewAngles, Math.Max(50, hit.TimeOffset - LastOffset));
#if DEBUG == true
Log.WriteDebug($"Current Strain: {currentStrain}");
#endif
LastOffset = hit.TimeOffset;
if (currentStrain > ClientStats.MaxStrain)
{
ClientStats.MaxStrain = currentStrain;
}
// flag
if (currentStrain > Thresholds.MaxStrainFlag)
{
result = new DetectionPenaltyResult()
{
ClientPenalty = Penalty.PenaltyType.Flag,
Value = currentStrain,
HitCount = HitCount,
Type = DetectionType.Strain
};
}
// ban
if (currentStrain > Thresholds.MaxStrainBan &&
HitCount >= 5)
{
result = new DetectionPenaltyResult()
{
ClientPenalty = Penalty.PenaltyType.Ban,
Value = currentStrain,
HitCount = HitCount,
Type = DetectionType.Strain
};
}
#endregion
#region SESSION_RATIOS
if (Kills >= Thresholds.LowSampleMinKills)
{
double marginOfError = Thresholds.GetMarginOfError(HitCount);
// determine what the max headshot percentage can be for current number of kills
double lerpAmount = Math.Min(1.0, (HitCount - Thresholds.LowSampleMinKills) / (double)(/*Thresholds.HighSampleMinKills*/ 60 - Thresholds.LowSampleMinKills));
double maxHeadshotLerpValueForFlag = Thresholds.Lerp(Thresholds.HeadshotRatioThresholdLowSample(2.0), Thresholds.HeadshotRatioThresholdHighSample(2.0), lerpAmount) + marginOfError;
double maxHeadshotLerpValueForBan = Thresholds.Lerp(Thresholds.HeadshotRatioThresholdLowSample(3.5), Thresholds.HeadshotRatioThresholdHighSample(3.5), lerpAmount) + marginOfError;
// determine what the max bone percentage can be for current number of kills
double maxBoneRatioLerpValueForFlag = Thresholds.Lerp(Thresholds.BoneRatioThresholdLowSample(2.25), Thresholds.BoneRatioThresholdHighSample(2.25), lerpAmount) + marginOfError;
double maxBoneRatioLerpValueForBan = Thresholds.Lerp(Thresholds.BoneRatioThresholdLowSample(3.25), Thresholds.BoneRatioThresholdHighSample(3.25), lerpAmount) + marginOfError;
// calculate headshot ratio
double currentHeadshotRatio = ((HitLocationCount[IW4Info.HitLocation.head] + HitLocationCount[IW4Info.HitLocation.helmet] + HitLocationCount[IW4Info.HitLocation.neck]) / (double)HitCount);
// calculate maximum bone
double currentMaxBoneRatio = (HitLocationCount.Values.Select(v => v / (double)HitCount).Max());
var bone = HitLocationCount.FirstOrDefault(b => b.Value == HitLocationCount.Values.Max()).Key;
#region HEADSHOT_RATIO
// flag on headshot
if (currentHeadshotRatio > maxHeadshotLerpValueForFlag)
{
// ban on headshot
if (currentHeadshotRatio > maxHeadshotLerpValueForBan)
{
Log.WriteDebug("**Maximum Headshot Ratio Reached For Ban**");
Log.WriteDebug($"ClientId: {hit.AttackerId}");
Log.WriteDebug($"**HitCount: {HitCount}");
Log.WriteDebug($"**Ratio {currentHeadshotRatio}");
Log.WriteDebug($"**MaxRatio {maxHeadshotLerpValueForFlag}");
var sb = new StringBuilder();
foreach (var kvp in HitLocationCount)
{
sb.Append($"HitLocation: {kvp.Key} -> {kvp.Value}\r\n");
}
Log.WriteDebug(sb.ToString());
result = new DetectionPenaltyResult()
{
ClientPenalty = Penalty.PenaltyType.Ban,
Value = currentHeadshotRatio,
Location = IW4Info.HitLocation.head,
HitCount = HitCount,
Type = DetectionType.Bone
};
}
else
{
Log.WriteDebug("**Maximum Headshot Ratio Reached For Flag**");
Log.WriteDebug($"ClientId: {hit.AttackerId}");
Log.WriteDebug($"**HitCount: {HitCount}");
Log.WriteDebug($"**Ratio {currentHeadshotRatio}");
Log.WriteDebug($"**MaxRatio {maxHeadshotLerpValueForFlag}");
var sb = new StringBuilder();
foreach (var kvp in HitLocationCount)
{
sb.Append($"HitLocation: {kvp.Key} -> {kvp.Value}\r\n");
}
Log.WriteDebug(sb.ToString());
result = new DetectionPenaltyResult()
{
ClientPenalty = Penalty.PenaltyType.Flag,
Value = currentHeadshotRatio,
Location = IW4Info.HitLocation.head,
HitCount = HitCount,
Type = DetectionType.Bone
};
}
}
#endregion
#region BONE_RATIO
// flag on bone ratio
else if (currentMaxBoneRatio > maxBoneRatioLerpValueForFlag)
{
// ban on bone ratio
if (currentMaxBoneRatio > maxBoneRatioLerpValueForBan)
{
Log.WriteDebug("**Maximum Bone Ratio Reached For Ban**");
Log.WriteDebug($"ClientId: {hit.AttackerId}");
Log.WriteDebug($"**HitCount: {HitCount}");
Log.WriteDebug($"**Ratio {currentMaxBoneRatio}");
Log.WriteDebug($"**MaxRatio {maxBoneRatioLerpValueForBan}");
var sb = new StringBuilder();
foreach (var kvp in HitLocationCount)
{
sb.Append($"HitLocation: {kvp.Key} -> {kvp.Value}\r\n");
}
Log.WriteDebug(sb.ToString());
result = new DetectionPenaltyResult()
{
ClientPenalty = Penalty.PenaltyType.Ban,
Value = currentMaxBoneRatio,
Location = bone,
HitCount = HitCount,
Type = DetectionType.Bone
};
}
else
{
Log.WriteDebug("**Maximum Bone Ratio Reached For Flag**");
Log.WriteDebug($"ClientId: {hit.AttackerId}");
Log.WriteDebug($"**HitCount: {HitCount}");
Log.WriteDebug($"**Ratio {currentMaxBoneRatio}");
Log.WriteDebug($"**MaxRatio {maxBoneRatioLerpValueForFlag}");
var sb = new StringBuilder();
foreach (var kvp in HitLocationCount)
{
sb.Append($"HitLocation: {kvp.Key} -> {kvp.Value}\r\n");
}
Log.WriteDebug(sb.ToString());
result = new DetectionPenaltyResult()
{
ClientPenalty = Penalty.PenaltyType.Flag,
Value = currentMaxBoneRatio,
Location = bone,
HitCount = HitCount,
Type = DetectionType.Bone
};
}
}
#endregion
}
#region CHEST_ABDOMEN_RATIO_SESSION
int chestHits = HitLocationCount[IW4Info.HitLocation.torso_upper];
if (chestHits >= Thresholds.MediumSampleMinKills)
{
double marginOfError = Thresholds.GetMarginOfError(chestHits);
double lerpAmount = Math.Min(1.0, (chestHits - Thresholds.MediumSampleMinKills) / (double)(Thresholds.HighSampleMinKills - Thresholds.LowSampleMinKills));
// determine max acceptable ratio of chest to abdomen kills
double chestAbdomenRatioLerpValueForFlag = Thresholds.Lerp(Thresholds.ChestAbdomenRatioThresholdLowSample(3), Thresholds.ChestAbdomenRatioThresholdHighSample(3), lerpAmount) + marginOfError;
double chestAbdomenLerpValueForBan = Thresholds.Lerp(Thresholds.ChestAbdomenRatioThresholdLowSample(4), Thresholds.ChestAbdomenRatioThresholdHighSample(4), lerpAmount) + marginOfError;
double currentChestAbdomenRatio = HitLocationCount[IW4Info.HitLocation.torso_upper] / (double)HitLocationCount[IW4Info.HitLocation.torso_lower];
if (currentChestAbdomenRatio > chestAbdomenRatioLerpValueForFlag)
{
if (currentChestAbdomenRatio > chestAbdomenLerpValueForBan && chestHits >= Thresholds.MediumSampleMinKills + 30)
{
//Log.WriteDebug("**Maximum Chest/Abdomen Ratio Reached For Ban**");
//Log.WriteDebug($"ClientId: {hit.AttackerId}");
//Log.WriteDebug($"**Chest Hits: {chestHits}");
//Log.WriteDebug($"**Ratio {currentChestAbdomenRatio}");
//Log.WriteDebug($"**MaxRatio {chestAbdomenLerpValueForBan}");
//var sb = new StringBuilder();
//foreach (var kvp in HitLocationCount)
// sb.Append($"HitLocation: {kvp.Key} -> {kvp.Value}\r\n");
//Log.WriteDebug(sb.ToString());
result = new DetectionPenaltyResult()
{
ClientPenalty = Penalty.PenaltyType.Ban,
Value = currentChestAbdomenRatio,
Location = IW4Info.HitLocation.torso_upper,
Type = DetectionType.Chest,
HitCount = chestHits
};
}
else
{
//Log.WriteDebug("**Maximum Chest/Abdomen Ratio Reached For Flag**");
//Log.WriteDebug($"ClientId: {hit.AttackerId}");
//Log.WriteDebug($"**Chest Hits: {chestHits}");
//Log.WriteDebug($"**Ratio {currentChestAbdomenRatio}");
//Log.WriteDebug($"**MaxRatio {chestAbdomenRatioLerpValueForFlag}");
//var sb = new StringBuilder();
//foreach (var kvp in HitLocationCount)
// sb.Append($"HitLocation: {kvp.Key} -> {kvp.Value}\r\n");
//Log.WriteDebug(sb.ToString());
result = new DetectionPenaltyResult()
{
ClientPenalty = Penalty.PenaltyType.Flag,
Value = currentChestAbdomenRatio,
Location = IW4Info.HitLocation.torso_upper,
Type = DetectionType.Chest,
HitCount = chestHits
};
}
}
}
#endregion
#endregion
Tracker.OnChange(new EFACSnapshot()
{
When = hit.When,
ClientId = ClientStats.ClientId,
SessionAngleOffset = AngleDifferenceAverage,
CurrentSessionLength = (int)(DateTime.UtcNow - ConnectionTime).TotalSeconds,
CurrentStrain = currentStrain,
CurrentViewAngle = hit.ViewAngles,
Hits = HitCount,
Kills = Kills,
Deaths = ClientStats.SessionDeaths,
HitDestinationId = hit.DeathOrigin.Vector3Id,
HitDestination = hit.DeathOrigin,
HitOriginId = hit.KillOrigin.Vector3Id,
HitOrigin = hit.KillOrigin,
EloRating = ClientStats.EloRating,
HitLocation = hit.HitLoc,
LastStrainAngle = Strain.LastAngle,
PredictedViewAngles = hit.AnglesList,
// this is in "meters"
Distance = hit.Distance,
SessionScore = ClientStats.SessionScore,
HitType = hit.DeathType,
SessionSPM = ClientStats.SessionSPM,
StrainAngleBetween = Strain.LastDistance,
TimeSinceLastEvent = (int)Strain.LastDeltaTime,
WeaponId = hit.Weapon
});
return result ?? new DetectionPenaltyResult()
{
ClientPenalty = Penalty.PenaltyType.Any,
};
}
public DetectionPenaltyResult ProcessTotalRatio(EFClientStatistics stats)
{
int totalChestHits = stats.HitLocations.Single(c => c.Location == IW4Info.HitLocation.torso_upper).HitCount;
if (totalChestHits >= 60)
{
double marginOfError = Thresholds.GetMarginOfError(totalChestHits);
double lerpAmount = Math.Min(1.0, (totalChestHits - 60) / 250.0);
// determine max acceptable ratio of chest to abdomen kills
double chestAbdomenRatioLerpValueForFlag = Thresholds.Lerp(Thresholds.ChestAbdomenRatioThresholdHighSample(3.0), Thresholds.ChestAbdomenRatioThresholdHighSample(2.0), lerpAmount) + marginOfError;
double chestAbdomenLerpValueForBan = Thresholds.Lerp(Thresholds.ChestAbdomenRatioThresholdHighSample(4.0), Thresholds.ChestAbdomenRatioThresholdHighSample(3.0), lerpAmount) + marginOfError;
double currentChestAbdomenRatio = totalChestHits /
stats.HitLocations.Single(hl => hl.Location == IW4Info.HitLocation.torso_lower).HitCount;
if (currentChestAbdomenRatio > chestAbdomenRatioLerpValueForFlag)
{
if (currentChestAbdomenRatio > chestAbdomenLerpValueForBan)
{
//Log.WriteDebug("**Maximum Lifetime Chest/Abdomen Ratio Reached For Ban**");
//Log.WriteDebug($"ClientId: {stats.ClientId}");
//Log.WriteDebug($"**Total Chest Hits: {totalChestHits}");
//Log.WriteDebug($"**Ratio {currentChestAbdomenRatio}");
//Log.WriteDebug($"**MaxRatio {chestAbdomenLerpValueForBan}");
//var sb = new StringBuilder();
//foreach (var location in stats.HitLocations)
// sb.Append($"HitLocation: {location.Location} -> {location.HitCount}\r\n");
//Log.WriteDebug(sb.ToString());
return new DetectionPenaltyResult()
{
ClientPenalty = Penalty.PenaltyType.Ban,
Value = currentChestAbdomenRatio,
Location = IW4Info.HitLocation.torso_upper,
HitCount = totalChestHits,
Type = DetectionType.Chest
};
}
else
{
//Log.WriteDebug("**Maximum Lifetime Chest/Abdomen Ratio Reached For Flag**");
//Log.WriteDebug($"ClientId: {stats.ClientId}");
//Log.WriteDebug($"**Total Chest Hits: {totalChestHits}");
//Log.WriteDebug($"**Ratio {currentChestAbdomenRatio}");
//Log.WriteDebug($"**MaxRatio {chestAbdomenRatioLerpValueForFlag}");
//var sb = new StringBuilder();
//foreach (var location in stats.HitLocations)
// sb.Append($"HitLocation: {location.Location} -> {location.HitCount}\r\n");
//Log.WriteDebug(sb.ToString());
return new DetectionPenaltyResult()
{
ClientPenalty = Penalty.PenaltyType.Flag,
Value = currentChestAbdomenRatio,
Location = IW4Info.HitLocation.torso_upper,
HitCount = totalChestHits,
Type = DetectionType.Chest
};
}
}
}
return new DetectionPenaltyResult()
{
ClientPenalty = Penalty.PenaltyType.Any
};
}
}
}