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Update (detection): New Detection No Fall Damage

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New detection No Fall Damage Hack. Its when players use external apps to prevent fall damage from registering.
New conf:
Anticheat.NoFallDamage = 1

Autoupdate feature should apply the sql update automatically to add the new column.  If not then apply it manually from either the sql\characters folder or the sql\updates folder
This commit is contained in:
MDIC
2022-08-12 11:17:47 -04:00
parent 74d7518187
commit cc6816378c
7 changed files with 74 additions and 12 deletions
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1
conf/Anticheat.conf.dist
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@@ -83,6 +83,7 @@ Anticheat.DetectZaxisHack =1
Anticheat.AntiSwimHack = 1
Anticheat.DetectGravityHack = 1
Anticheat.AntiKnockBack = 1
Anticheat.NoFallDamage = 1
# Anticheat.StricterFlyHackCheck
# Description: Checks moveflag ascending (may give false positives)

2
sql/characters/base/charactersdb_anticheat.sql
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@@ -16,6 +16,7 @@ CREATE TABLE IF NOT EXISTS `daily_players_reports` (
`antiswim_reports` bigint unsigned NOT NULL DEFAULT 0,
`gravity_reports` bigint unsigned NOT NULL DEFAULT 0,
`antiknockback_reports` bigint unsigned NOT NULL DEFAULT 0,
`no_fall_damage_reports` bigint unsigned NOT NULL DEFAULT 0,
PRIMARY KEY (`guid`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
@@ -37,5 +38,6 @@ CREATE TABLE IF NOT EXISTS `players_reports_status` (
`antiswim_reports` bigint unsigned NOT NULL DEFAULT 0,
`gravity_reports` bigint unsigned NOT NULL DEFAULT 0,
`antiknockback_reports` bigint unsigned NOT NULL DEFAULT 0,
`no_fall_damage_reports` bigint unsigned NOT NULL DEFAULT 0,
PRIMARY KEY (`guid`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

6
sql/updates/characters/2022_08_12_00.sql Normal file
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@@ -0,0 +1,6 @@
-- run on character db
ALTER TABLE `daily_players_reports`
ADD COLUMN `no_fall_damage_reports` BIGINT UNSIGNED NOT NULL DEFAULT 0 AFTER `antiknockback_reports`;
ALTER TABLE `players_reports_status`
ADD COLUMN `no_fall_damage_reports` BIGINT UNSIGNED NOT NULL DEFAULT 0 AFTER `antiknockback_reports`;

2
src/AnticheatData.h
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@@ -27,7 +27,7 @@
#include "AnticheatMgr.h"
#define MAX_REPORT_TYPES 12
#define MAX_REPORT_TYPES 13
class AnticheatData
{

66
src/AnticheatMgr.cpp
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@@ -89,7 +89,8 @@ void AnticheatMgr::StartHackDetection(Player* player, MovementInfo movementInfo,
{
AntiSwimHackDetection(player, movementInfo, opcode);
}
AntiKnockBackHactDetection(player, movementInfo);
AntiKnockBackHackDetection(player, movementInfo);
NoFallDamageDetection(player, movementInfo);
m_Players[key].SetLastMovementInfo(movementInfo);
m_Players[key].SetLastOpcode(opcode);
}
@@ -702,7 +703,7 @@ void AnticheatMgr::AntiSwimHackDetection(Player* player, MovementInfo movementIn
}
// basic detection
void AnticheatMgr::AntiKnockBackHactDetection(Player* player, MovementInfo movementInfo)
void AnticheatMgr::AntiKnockBackHackDetection(Player* player, MovementInfo movementInfo)
{
if (!sConfigMgr->GetOption<bool>("Anticheat.AntiKnockBack", true))
return;
@@ -728,6 +729,52 @@ void AnticheatMgr::AntiKnockBackHactDetection(Player* player, MovementInfo movem
player->SetCanKnockback(false);
}
// basic detection
void AnticheatMgr::NoFallDamageDetection(Player* player, MovementInfo movementInfo)
{
if (!sConfigMgr->GetOption<bool>("Anticheat.NoFallDamage", true))
return;
// ghost can not get damaged
if (player->HasAuraType(SPELL_AURA_GHOST))
return;
// players with water walk aura jumping on to the water from ledge would not get damage and neither will safe fall and feather fall
if (player->HasAuraType(SPELL_AURA_WATER_WALK) && player->GetLiquidData().Status == LIQUID_MAP_WATER_WALK && !player->IsFlying() ||
player->HasAuraType(SPELL_AURA_FEATHER_FALL) || player->HasAuraType(SPELL_AURA_SAFE_FALL))
{
return;
}
ObjectGuid key = player->GetGUID();
float lastZ = m_Players[key].GetLastMovementInfo().pos.GetPositionZ();
float newZ = movementInfo.pos.GetPositionZ();
float zDiff = fabs(lastZ - newZ);
int32 safe_fall = player->GetTotalAuraModifier(SPELL_AURA_SAFE_FALL);
float damageperc = 0.018f * (zDiff - safe_fall) - 0.2426f;
uint32 damage = (uint32)(damageperc * player->GetMaxHealth() * sWorld->getRate(RATE_DAMAGE_FALL));
// in the Player::Handlefall 14.57f is used to calculated the damageperc formula below to 0 for fall damamge
if (movementInfo.pos.GetPositionZ() < m_Players[key].GetLastMovementInfo().pos.GetPositionZ() && zDiff > 14.57f)
{
if (movementInfo.HasMovementFlag(MOVEMENTFLAG_FALLING) || m_Players[key].GetLastMovementInfo().HasMovementFlag(MOVEMENTFLAG_FALLING))
{
if (damage == 0 && !player->IsImmunedToDamageOrSchool(SPELL_SCHOOL_MASK_NORMAL))
{
if (sConfigMgr->GetOption<bool>("Anticheat.WriteLog", true))
{
uint32 latency = 0;
latency = player->GetSession()->GetLatency();
LOG_INFO("anticheat.module", "AnticheatMgr:: No Fall Damage - Hack detected player {} ({}) - Latency: {} ms", player->GetName(), player->GetGUID().ToString(), latency);
}
BuildReport(player, NO_FALL_DAMAGE_HACK_REPORT);
}
}
}
}
void AnticheatMgr::HandlePlayerLogin(Player* player)
{
// we must delete this to prevent errors in case of crash
@@ -753,15 +800,15 @@ void AnticheatMgr::HandlePlayerLogout(Player* player)
void AnticheatMgr::SavePlayerData(Player* player)
{
AnticheatData playerData = m_Players[player->GetGUID()];
// 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
CharacterDatabase.Execute("REPLACE INTO players_reports_status (guid,average,total_reports,speed_reports,fly_reports,jump_reports,waterwalk_reports,teleportplane_reports,climb_reports,teleport_reports,ignorecontrol_reports,zaxis_reports,antiswim_reports,gravity_reports,antiknockback_reports,creation_time) VALUES ({},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{});", player->GetGUID().GetCounter(), playerData.GetAverage(), playerData.GetTotalReports(), playerData.GetTypeReports(SPEED_HACK_REPORT), playerData.GetTypeReports(FLY_HACK_REPORT), playerData.GetTypeReports(JUMP_HACK_REPORT), playerData.GetTypeReports(WALK_WATER_HACK_REPORT), playerData.GetTypeReports(TELEPORT_PLANE_HACK_REPORT), playerData.GetTypeReports(CLIMB_HACK_REPORT), playerData.GetTypeReports(TELEPORT_HACK_REPORT), playerData.GetTypeReports(IGNORE_CONTROL_REPORT), playerData.GetTypeReports(ZAXIS_HACK_REPORT), playerData.GetTypeReports(ANTISWIM_HACK_REPORT), playerData.GetTypeReports(GRAVITY_HACK_REPORT), playerData.GetTypeReports(ANTIKNOCK_BACK_HACK_REPORT), playerData.GetCreationTime());
// 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
CharacterDatabase.Execute("REPLACE INTO players_reports_status (guid,average,total_reports,speed_reports,fly_reports,jump_reports,waterwalk_reports,teleportplane_reports,climb_reports,teleport_reports,ignorecontrol_reports,zaxis_reports,antiswim_reports,gravity_reports,antiknockback_reports,no_fall_damage_reports,creation_time) VALUES ({},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{});", player->GetGUID().GetCounter(), playerData.GetAverage(), playerData.GetTotalReports(), playerData.GetTypeReports(SPEED_HACK_REPORT), playerData.GetTypeReports(FLY_HACK_REPORT), playerData.GetTypeReports(JUMP_HACK_REPORT), playerData.GetTypeReports(WALK_WATER_HACK_REPORT), playerData.GetTypeReports(TELEPORT_PLANE_HACK_REPORT), playerData.GetTypeReports(CLIMB_HACK_REPORT), playerData.GetTypeReports(TELEPORT_HACK_REPORT), playerData.GetTypeReports(IGNORE_CONTROL_REPORT), playerData.GetTypeReports(ZAXIS_HACK_REPORT), playerData.GetTypeReports(ANTISWIM_HACK_REPORT), playerData.GetTypeReports(GRAVITY_HACK_REPORT), playerData.GetTypeReports(ANTIKNOCK_BACK_HACK_REPORT), playerData.GetTypeReports(NO_FALL_DAMAGE_HACK_REPORT), playerData.GetCreationTime());
}
void AnticheatMgr::SavePlayerDataDaily(Player* player)
{
AnticheatData playerData = m_Players[player->GetGUID()];
// 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
CharacterDatabase.Execute("REPLACE INTO daily_players_reports (guid,average,total_reports,speed_reports,fly_reports,jump_reports,waterwalk_reports,teleportplane_reports,climb_reports,teleport_reports,ignorecontrol_reports,zaxis_reports,antiswim_reports,gravity_reports,antiknockback_reports,creation_time) VALUES ({},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{});", player->GetGUID().GetCounter(), playerData.GetAverage(), playerData.GetTotalReports(), playerData.GetTypeReports(SPEED_HACK_REPORT), playerData.GetTypeReports(FLY_HACK_REPORT), playerData.GetTypeReports(JUMP_HACK_REPORT), playerData.GetTypeReports(WALK_WATER_HACK_REPORT), playerData.GetTypeReports(TELEPORT_PLANE_HACK_REPORT), playerData.GetTypeReports(CLIMB_HACK_REPORT), playerData.GetTypeReports(TELEPORT_HACK_REPORT), playerData.GetTypeReports(IGNORE_CONTROL_REPORT), playerData.GetTypeReports(ZAXIS_HACK_REPORT), playerData.GetTypeReports(ANTISWIM_HACK_REPORT), playerData.GetTypeReports(GRAVITY_HACK_REPORT), playerData.GetTypeReports(ANTIKNOCK_BACK_HACK_REPORT), playerData.GetCreationTime());
// 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
CharacterDatabase.Execute("REPLACE INTO daily_players_reports (guid,average,total_reports,speed_reports,fly_reports,jump_reports,waterwalk_reports,teleportplane_reports,climb_reports,teleport_reports,ignorecontrol_reports,zaxis_reports,antiswim_reports,gravity_reports,antiknockback_reports,no_fall_damage_reports,creation_time) VALUES ({},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{});", player->GetGUID().GetCounter(), playerData.GetAverage(), playerData.GetTotalReports(), playerData.GetTypeReports(SPEED_HACK_REPORT), playerData.GetTypeReports(FLY_HACK_REPORT), playerData.GetTypeReports(JUMP_HACK_REPORT), playerData.GetTypeReports(WALK_WATER_HACK_REPORT), playerData.GetTypeReports(TELEPORT_PLANE_HACK_REPORT), playerData.GetTypeReports(CLIMB_HACK_REPORT), playerData.GetTypeReports(TELEPORT_HACK_REPORT), playerData.GetTypeReports(IGNORE_CONTROL_REPORT), playerData.GetTypeReports(ZAXIS_HACK_REPORT), playerData.GetTypeReports(ANTISWIM_HACK_REPORT), playerData.GetTypeReports(GRAVITY_HACK_REPORT), playerData.GetTypeReports(ANTIKNOCK_BACK_HACK_REPORT), playerData.GetTypeReports(NO_FALL_DAMAGE_HACK_REPORT), playerData.GetCreationTime());
}
uint32 AnticheatMgr::GetTotalReports(ObjectGuid guid)
{
@@ -795,6 +842,9 @@ bool AnticheatMgr::MustCheckTempReports(uint8 type)
if (type == ANTIKNOCK_BACK_HACK_REPORT)
return false;
if (type == NO_FALL_DAMAGE_HACK_REPORT)
return false;
return true;
}
@@ -860,8 +910,8 @@ void AnticheatMgr::BuildReport(Player* player, uint16 reportType)
if (!m_Players[key].GetDailyReportState())
{
AnticheatData playerData = m_Players[player->GetGUID()];
// 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
CharacterDatabase.Execute("REPLACE INTO daily_players_reports (guid,average,total_reports,speed_reports,fly_reports,jump_reports,waterwalk_reports,teleportplane_reports,climb_reports,teleport_reports,ignorecontrol_reports,zaxis_reports,antiswim_reports,gravity_reports,antiknockback_reports,creation_time) VALUES ({},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{});", player->GetGUID().GetCounter(), playerData.GetAverage(), playerData.GetTotalReports(), playerData.GetTypeReports(SPEED_HACK_REPORT), playerData.GetTypeReports(FLY_HACK_REPORT), playerData.GetTypeReports(JUMP_HACK_REPORT), playerData.GetTypeReports(WALK_WATER_HACK_REPORT), playerData.GetTypeReports(TELEPORT_PLANE_HACK_REPORT), playerData.GetTypeReports(CLIMB_HACK_REPORT), playerData.GetTypeReports(TELEPORT_HACK_REPORT), playerData.GetTypeReports(IGNORE_CONTROL_REPORT), playerData.GetTypeReports(ZAXIS_HACK_REPORT), playerData.GetTypeReports(ANTISWIM_HACK_REPORT), playerData.GetTypeReports(GRAVITY_HACK_REPORT), playerData.GetTypeReports(ANTIKNOCK_BACK_HACK_REPORT), playerData.GetCreationTime());
// 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
CharacterDatabase.Execute("REPLACE INTO daily_players_reports (guid,average,total_reports,speed_reports,fly_reports,jump_reports,waterwalk_reports,teleportplane_reports,climb_reports,teleport_reports,ignorecontrol_reports,zaxis_reports,antiswim_reports,gravity_reports,antiknockback_reports,no_fall_damage_reports,creation_time) VALUES ({},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{});", player->GetGUID().GetCounter(), playerData.GetAverage(), playerData.GetTotalReports(), playerData.GetTypeReports(SPEED_HACK_REPORT), playerData.GetTypeReports(FLY_HACK_REPORT), playerData.GetTypeReports(JUMP_HACK_REPORT), playerData.GetTypeReports(WALK_WATER_HACK_REPORT), playerData.GetTypeReports(TELEPORT_PLANE_HACK_REPORT), playerData.GetTypeReports(CLIMB_HACK_REPORT), playerData.GetTypeReports(TELEPORT_HACK_REPORT), playerData.GetTypeReports(IGNORE_CONTROL_REPORT), playerData.GetTypeReports(ZAXIS_HACK_REPORT), playerData.GetTypeReports(ANTISWIM_HACK_REPORT), playerData.GetTypeReports(GRAVITY_HACK_REPORT), playerData.GetTypeReports(ANTIKNOCK_BACK_HACK_REPORT), playerData.GetTypeReports(NO_FALL_DAMAGE_HACK_REPORT), playerData.GetCreationTime());
m_Players[key].SetDailyReportState(true);
}
}

6
src/AnticheatMgr.h
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@@ -49,7 +49,8 @@ enum ReportTypes
ZAXIS_HACK_REPORT = 8,
ANTISWIM_HACK_REPORT = 9,
GRAVITY_HACK_REPORT = 10,
ANTIKNOCK_BACK_HACK_REPORT = 11
ANTIKNOCK_BACK_HACK_REPORT = 11,
NO_FALL_DAMAGE_HACK_REPORT = 12
// MAX_REPORT_TYPES
};
@@ -97,7 +98,8 @@ class AnticheatMgr
void WalkOnWaterHackDetection(Player* player, MovementInfo movementInfo);
void ZAxisHackDetection(Player* player, MovementInfo movementInfo);
void AntiSwimHackDetection(Player* player, MovementInfo movementInfo, uint32 opcode);
void AntiKnockBackHactDetection(Player* player, MovementInfo movementInfo);
void AntiKnockBackHackDetection(Player* player, MovementInfo movementInfo);
void NoFallDamageDetection(Player* player, MovementInfo movementInfo);
void BuildReport(Player* player,uint16 reportType);
bool MustCheckTempReports(uint8 type);
uint32 _counter = 0;

3
src/cs_anticheat.cpp
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@@ -220,6 +220,7 @@ public:
uint32 antiswim_reports = sAnticheatMgr->GetTypeReports(guid, 9);
uint32 gravity_reports = sAnticheatMgr->GetTypeReports(guid, 10);
uint32 antiknockback_reports = sAnticheatMgr->GetTypeReports(guid, 11);
uint32 no_fall_damage_reports = sAnticheatMgr->GetTypeReports(guid, 12);
Player* playerTarget = player->GetConnectedPlayer();
uint32 latency = 0;
latency = playerTarget->GetSession()->GetLatency();
@@ -230,7 +231,7 @@ public:
handler->PSendSysMessage("Teleport Reports: %u || Climb Reports: %u", teleport_reports, climb_reports);
handler->PSendSysMessage("Ignore Control Reports: %u || Ignore Z-Axis Reports: %u", ignorecontrol_reports, zaxis_reports);
handler->PSendSysMessage("Ignore Anti-Swim Reports: %u || Gravity Reports: %u", antiswim_reports, gravity_reports);
handler->PSendSysMessage("Anti-Knock Back Reports: %u", antiknockback_reports);
handler->PSendSysMessage("Anti-Knock Back Reports: %u || No Fall Damage Reports: %u", antiknockback_reports, no_fall_damage_reports);
return true;
}
else