void WorldSession::HandleMovementOpcodes( WorldPacket & recv_data )
{
uint32 opcode = recv_data.GetOpcode();
sLog.outDebug("WORLD: Recvd %s (%u, 0x%X) opcode", LookupOpcodeName(opcode), opcode, opcode);
recv_data.hexlike();
Unit *mover = _player->m_mover;
Player *plMover = mover->GetTypeId() == TYPEID_PLAYER ? (Player*)mover : NULL;
// ignore, waiting processing in WorldSession::HandleMoveWorldportAckOpcode and WorldSession::HandleMoveTeleportAck
if(plMover && plMover->IsBeingTeleported())
{
recv_data.rpos(recv_data.wpos()); // prevent warnings spam
return;
}
/* extract packet */
ObjectGuid guid;
MovementInfo movementInfo;
recv_data >> guid.ReadAsPacked();
recv_data >> movementInfo;
/*----------------*/
if (!MaNGOS::IsValidMapCoord(movementInfo.GetPos()->x, movementInfo.GetPos()->y, movementInfo.GetPos()->z, movementInfo.GetPos()->o))
{
recv_data.rpos(recv_data.wpos()); // prevent warnings spam
return;
}
/* handle special cases */
if (movementInfo.HasMovementFlag(MOVEFLAG_ONTRANSPORT))
{
// transports size limited
// (also received at zeppelin/lift leave by some reason with t_* as absolute in continent coordinates, can be safely skipped)
if( movementInfo.GetTransportPos()->x > 50 || movementInfo.GetTransportPos()->y > 50 || movementInfo.GetTransportPos()->z > 100 )
{
recv_data.rpos(recv_data.wpos()); // prevent warnings spam
return;
}
if( !MaNGOS::IsValidMapCoord(movementInfo.GetPos()->x + movementInfo.GetTransportPos()->x, movementInfo.GetPos()->y + movementInfo.GetTransportPos()->y,
movementInfo.GetPos()->z + movementInfo.GetTransportPos()->z, movementInfo.GetPos()->o + movementInfo.GetTransportPos()->o) )
{
recv_data.rpos(recv_data.wpos()); // prevent warnings spam
return;
}
// if we boarded a transport, add us to it
if (plMover && !plMover->m_transport)
{
// elevators also cause the client to send MOVEFLAG_ONTRANSPORT - just unmount if the guid can be found in the transport list
for (MapManager::TransportSet::const_iterator iter = sMapMgr.m_Transports.begin(); iter != sMapMgr.m_Transports.end(); ++iter)
{
if ((*iter)->GetGUID() == movementInfo.GetTransportGuid())
{
plMover->m_transport = (*iter);
(*iter)->AddPassenger(plMover);
break;
}
}
}
}
else if (plMover && plMover->m_transport) // if we were on a transport, leave
{
plMover->m_transport->RemovePassenger(plMover);
plMover->m_transport = NULL;
movementInfo.SetTransportData(0, 0.0f, 0.0f, 0.0f, 0.0f, 0, -1);
}
// fall damage generation (ignore in flight case that can be triggered also at lags in moment teleportation to another map).
if (opcode == MSG_MOVE_FALL_LAND && plMover && !plMover->isInFlight())
plMover->HandleFall(movementInfo);
if (plMover && (movementInfo.HasMovementFlag(MOVEFLAG_SWIMMING) != plMover->IsInWater()))
{
// now client not include swimming flag in case jumping under water
plMover->SetInWater( !plMover->IsInWater() || plMover->GetBaseMap()->IsUnderWater(movementInfo.GetPos()->x, movementInfo.GetPos()->y, movementInfo.GetPos()->z) );
}
/*----------------------*/
/* process position-change */
movementInfo.UpdateTime(getMSTime());
WorldPacket data(opcode, recv_data.size());
data.appendPackGUID(mover->GetGUID()); // write guid
movementInfo.Write(data); // write data
GetPlayer()->SendMessageToSet(&data, false);
if(plMover) // nothing is charmed, or player charmed
{
plMover->SetPosition(movementInfo.GetPos()->x, movementInfo.GetPos()->y, movementInfo.GetPos()->z, movementInfo.GetPos()->o);
plMover->m_movementInfo = movementInfo;
plMover->UpdateFallInformationIfNeed(movementInfo, opcode);
// after move info set
if ((opcode == MSG_MOVE_SET_WALK_MODE || opcode == MSG_MOVE_SET_RUN_MODE))
plMover->UpdateWalkMode(plMover, false);
if(plMover->isMovingOrTurning())
plMover->RemoveSpellsCausingAura(SPELL_AURA_FEIGN_DEATH);
if(movementInfo.GetPos()->z < -500.0f)
{
if(plMover->InBattleGround()
&& plMover->GetBattleGround()
&& plMover->GetBattleGround()->HandlePlayerUnderMap(_player))
{
// do nothing, the handle already did if returned true
}
else
{
// NOTE: this is actually called many times while falling
// even after the player has been teleported away
// TODO: discard movement packets after the player is rooted
if(plMover->isAlive())
{
plMover->EnvironmentalDamage(DAMAGE_FALL_TO_VOID, GetPlayer()->GetMaxHealth());
// pl can be alive if GM/etc
if(!plMover->isAlive())
{
// change the death state to CORPSE to prevent the death timer from
// starting in the next player update
plMover->KillPlayer();
plMover->BuildPlayerRepop();
}
}
// cancel the death timer here if started
plMover->RepopAtGraveyard();
}
}
}
else // creature charmed
{
if(mover->IsInWorld())
mover->GetMap()->CreatureRelocation((Creature*)mover, movementInfo.GetPos()->x, movementInfo.GetPos()->y, movementInfo.GetPos()->z, movementInfo.GetPos()->o);
}
}
void WorldSession::HandleMovementOpcodes( WorldPacket & recv_data )
{
uint32 opcode = recv_data.GetOpcode();
sLog.outDebug("WORLD: Recvd %s (%u, 0x%X) opcode", LookupOpcodeName(opcode), opcode, opcode);
recv_data.hexlike();
Unit *mover = _player->m_mover;
Player *plMover = mover->GetTypeId() == TYPEID_PLAYER ? (Player*)mover : NULL;
// ignore, waiting processing in WorldSession::HandleMoveWorldportAckOpcode and WorldSession::HandleMoveTeleportAck
if(plMover && plMover->IsBeingTeleported())
{
recv_data.rpos(recv_data.wpos()); // prevent warnings spam
return;
}
/* extract packet */
ObjectGuid guid;
MovementInfo movementInfo;
recv_data >> guid.ReadAsPacked();
recv_data >> movementInfo;
/*----------------*/
if (!MaNGOS::IsValidMapCoord(movementInfo.GetPos()->x, movementInfo.GetPos()->y, movementInfo.GetPos()->z, movementInfo.GetPos()->o))
{
recv_data.rpos(recv_data.wpos()); // prevent warnings spam
return;
}
/* handle special cases */
if (movementInfo.HasMovementFlag(MOVEFLAG_ONTRANSPORT) && !mover->GetVehicleGUID())
{
// transports size limited
// (also received at zeppelin/lift leave by some reason with t_* as absolute in continent coordinates, can be safely skipped)
if( movementInfo.GetTransportPos()->x > 50 || movementInfo.GetTransportPos()->y > 50 || movementInfo.GetTransportPos()->z > 100 )
{
recv_data.rpos(recv_data.wpos()); // prevent warnings spam
return;
}
if( !MaNGOS::IsValidMapCoord(movementInfo.GetPos()->x + movementInfo.GetTransportPos()->x, movementInfo.GetPos()->y + movementInfo.GetTransportPos()->y,
movementInfo.GetPos()->z + movementInfo.GetTransportPos()->z, movementInfo.GetPos()->o + movementInfo.GetTransportPos()->o) )
{
recv_data.rpos(recv_data.wpos()); // prevent warnings spam
return;
}
// if we boarded a transport, add us to it
if (plMover && !plMover->m_transport)
{
float trans_rad = movementInfo.GetTransportPos()->x*movementInfo.GetTransportPos()->x + movementInfo.GetTransportPos()->y*movementInfo.GetTransportPos()->y + movementInfo.GetTransportPos()->z*movementInfo.GetTransportPos()->z;
if (trans_rad > 3600.0f) // transport radius = 60 yards //cheater with on_transport_flag
{
return;
}
// elevators also cause the client to send MOVEFLAG_ONTRANSPORT - just unmount if the guid can be found in the transport list
for (MapManager::TransportSet::const_iterator iter = sMapMgr.m_Transports.begin(); iter != sMapMgr.m_Transports.end(); ++iter)
{
if ((*iter)->GetObjectGuid() == movementInfo.GetTransportGuid())
{
plMover->m_transport = (*iter);
(*iter)->AddPassenger(plMover);
break;
}
}
}
}
else if (plMover && plMover->m_transport) // if we were on a transport, leave
{
plMover->m_transport->RemovePassenger(plMover);
plMover->m_transport = NULL;
movementInfo.SetTransportData(0, 0.0f, 0.0f, 0.0f, 0.0f, 0, -1);
}
// fall damage generation (ignore in flight case that can be triggered also at lags in moment teleportation to another map).
if (opcode == MSG_MOVE_FALL_LAND && plMover && !plMover->isInFlight())
plMover->HandleFall(movementInfo);
if (plMover && (movementInfo.HasMovementFlag(MOVEFLAG_SWIMMING) != plMover->IsInWater()))
{
// now client not include swimming flag in case jumping under water
plMover->SetInWater( !plMover->IsInWater() || plMover->GetBaseMap()->IsUnderWater(movementInfo.GetPos()->x, movementInfo.GetPos()->y, movementInfo.GetPos()->z) );
if(plMover->GetBaseMap()->IsUnderWater(movementInfo.GetPos()->x, movementInfo.GetPos()->y, movementInfo.GetPos()->z-7.0f))
{
plMover->m_anti_BeginFallZ=INVALID_HEIGHT;
}
}
if (movementInfo.HasMovementFlag(MOVEFLAG_SWIMMING))
{
if(mover->GetTypeId() == TYPEID_UNIT)
{
if(((Creature*)mover)->isVehicle() && !((Creature*)mover)->canSwim())
{
// NOTE : we should enter evade mode here, but...
((Vehicle*)mover)->SetSpawnDuration(1);
}
}
}
// ---- anti-cheat features -->>>
uint32 Anti_TeleTimeDiff=plMover ? time(NULL) - plMover->Anti__GetLastTeleTime() : time(NULL);
static const uint32 Anti_TeleTimeIgnoreDiff=sWorld.GetMvAnticheatIgnoreAfterTeleport();
if (plMover && (plMover->m_transport == 0) && sWorld.GetMvAnticheatEnable() &&
GetPlayer()->GetSession()->GetSecurity() <= sWorld.GetMvAnticheatGmLevel() &&
GetPlayer()->GetMotionMaster()->GetCurrentMovementGeneratorType()!=FLIGHT_MOTION_TYPE &&
Anti_TeleTimeDiff>Anti_TeleTimeIgnoreDiff)
{
const uint32 CurTime=getMSTime();
if(getMSTimeDiff(GetPlayer()->m_anti_lastalarmtime,CurTime) > sWorld.GetMvAnticheatAlarmPeriod())
{
GetPlayer()->m_anti_alarmcount = 0;
}
/* I really don't care about movement-type yet (todo)
UnitMoveType move_type;
if (movementInfo.flags & MOVEMENTFLAG_FLYING) move_type = MOVE_FLY;
else if (movementInfo.flags & MOVEMENTFLAG_SWIMMING) move_type = MOVE_SWIM;
else if (movementInfo.flags & MOVEMENTFLAG_WALK_MODE) move_type = MOVE_WALK;
else move_type = MOVE_RUN;*/
float delta_x = GetPlayer()->GetPositionX() - movementInfo.GetPos()->x;
float delta_y = GetPlayer()->GetPositionY() - movementInfo.GetPos()->y;
float delta_z = GetPlayer()->GetPositionZ() - movementInfo.GetPos()->z;
float delta = sqrt(delta_x * delta_x + delta_y * delta_y); // Len of movement-vector via Pythagoras (a^2+b^2=Len^2)
float tg_z = 0.0f; //tangens
float delta_t = getMSTimeDiff(GetPlayer()->m_anti_lastmovetime,CurTime);
GetPlayer()->m_anti_lastmovetime = CurTime;
GetPlayer()->m_anti_MovedLen += delta;
if(delta_t > 15000.0f)
{ delta_t = 15000.0f; }
// Tangens of walking angel
if (!(movementInfo.GetMovementFlags() & (MOVEFLAG_FLYING | MOVEFLAG_SWIMMING)))
{
//Mount hack detection currently disabled
tg_z = ((delta !=0.0f) && (delta_z > 0.0f)) ? (atan((delta_z*delta_z) / delta) * 180.0f / M_PI) : 0.0f;
}
//antiOFF fall-damage, MOVEMENTFLAG_UNK4 seted by client if player try movement when falling and unset in this case the MOVEMENTFLAG_FALLING flag.
if((GetPlayer()->m_anti_BeginFallZ == INVALID_HEIGHT) &&
(movementInfo.GetMovementFlags() & (MOVEFLAG_FALLING | MOVEFLAG_FALLINGFAR)) != 0)
{
GetPlayer()->m_anti_BeginFallZ=(float)(movementInfo.GetPos()->z);
}
if(GetPlayer()->m_anti_NextLenCheck <= CurTime)
{
// Check every 500ms is a lot more advisable then 1000ms, because normal movment packet arrives every 500ms
uint32 OldNextLenCheck=GetPlayer()->m_anti_NextLenCheck;
float delta_xyt=GetPlayer()->m_anti_MovedLen/(float)(getMSTimeDiff(OldNextLenCheck-500,CurTime));
GetPlayer()->m_anti_NextLenCheck = CurTime+500;
GetPlayer()->m_anti_MovedLen = 0.0f;
static const float MaxDeltaXYT = sWorld.GetMvAnticheatMaxXYT();
#ifdef __ANTI_DEBUG__
SendAreaTriggerMessage("XYT: %f ; Flags: %s",delta_xyt,FlagsToStr(movementInfo.GetMovementFlags()).c_str());
#endif //__ANTI_DEBUG__
if(delta_xyt > MaxDeltaXYT && delta<=100.0f && GetPlayer()->GetZoneId() != 2257)
{
Anti__CheatOccurred(CurTime,"Speed hack",delta_xyt,LookupOpcodeName(opcode),
(float)(GetPlayer()->GetMotionMaster()->GetCurrentMovementGeneratorType()),
(float)(getMSTimeDiff(OldNextLenCheck-500,CurTime))/*,&movementInfo*/);
}
}
if(delta > 100.0f && GetPlayer()->GetZoneId() != 2257)
{
Anti__ReportCheat("Tele hack",delta,LookupOpcodeName(opcode));
}
// Check for waterwalking . Fix new way of checking for waterwalking by Darky88
if (movementInfo.HasMovementFlag(MOVEFLAG_WATERWALKING) &&
!(GetPlayer()->HasAuraType(SPELL_AURA_WATER_WALK) || GetPlayer()->HasAuraType(SPELL_AURA_GHOST)))
{
Anti__CheatOccurred(CurTime,"Water walking",0.0f,NULL,0.0f,(uint32)(movementInfo.GetMovementFlags()));
}
// Check for walking upwards a mountain while not beeing able to do that
if ((tg_z > 85.0f))
{
Anti__CheatOccurred(CurTime,"Mount hack",tg_z,NULL,delta,delta_z);
}
static const float DIFF_OVERGROUND = 10.0f;
float Anti__GroundZ = GetPlayer()->GetMap()->GetHeight(GetPlayer()->GetPositionX(),GetPlayer()->GetPositionY(),MAX_HEIGHT);
float Anti__FloorZ = GetPlayer()->GetMap()->GetHeight(GetPlayer()->GetPositionX(),GetPlayer()->GetPositionY(),GetPlayer()->GetPositionZ());
float Anti__MapZ = ((Anti__FloorZ <= (INVALID_HEIGHT+5.0f)) ? Anti__GroundZ : Anti__FloorZ) + DIFF_OVERGROUND;
if(!GetPlayer()->CanFly() && /*!plMover->isGameMaster() &&*/
!GetPlayer()->GetBaseMap()->IsUnderWater(movementInfo.GetPos()->x, movementInfo.GetPos()->y, movementInfo.GetPos()->z-7.0f) &&
Anti__MapZ < GetPlayer()->GetPositionZ() && Anti__MapZ > (INVALID_HEIGHT+DIFF_OVERGROUND + 5.0f))
{
static const float DIFF_AIRJUMP=25.0f; // 25 is realy high, but to many false positives...
// Air-Jump-Detection definitively needs a better way to be detected...
if((movementInfo.GetMovementFlags() & (MOVEFLAG_CAN_FLY | MOVEFLAG_FLYING | MOVEFLAG_ROOT)) != 0) // Fly Hack
{
Anti__CheatOccurred(CurTime,"Fly hack",
((uint8)(GetPlayer()->HasAuraType(SPELL_AURA_FLY))) +
((uint8)(GetPlayer()->HasAuraType(SPELL_AURA_MOD_FLIGHT_SPEED_MOUNTED))*2),
NULL,GetPlayer()->GetPositionZ()-Anti__MapZ);
}
/* Need a better way to do that - currently a lot of fake alarms
else if((Anti__MapZ+DIFF_AIRJUMP < GetPlayer()->GetPositionZ() &&
(movementInfo.flags & (MOVEMENTFLAG_FALLING | MOVEMENTFLAG_UNK4))==0) ||
(Anti__MapZ < GetPlayer()->GetPositionZ() &&
opcode==MSG_MOVE_JUMP))
{
Anti__CheatOccurred(CurTime,"Possible Air Jump Hack",
0.0f,LookupOpcodeName(opcode),0.0f,movementInfo.flags,&movementInfo);
}*/
}
/*if(Anti__FloorZ < -199900.0f && Anti__GroundZ >= -199900.0f &&
GetPlayer()->GetPositionZ()+5.0f < Anti__GroundZ)
{
Anti__CheatOccurred(CurTime,"Teleport2Plane hack",
GetPlayer()->GetPositionZ(),NULL,Anti__GroundZ);
}*/
}
// <<---- anti-cheat features
/* process position-change */
movementInfo.UpdateTime(getMSTime());
WorldPacket data(opcode, recv_data.size());
data.appendPackGUID(mover->GetGUID()); // write guid
movementInfo.Write(data); // write data
GetPlayer()->SendMessageToSet(&data, false);
if(plMover) // nothing is charmed, or player charmed
{
plMover->SetPosition(movementInfo.GetPos()->x, movementInfo.GetPos()->y, movementInfo.GetPos()->z, movementInfo.GetPos()->o);
plMover->m_movementInfo = movementInfo;
plMover->UpdateFallInformationIfNeed(movementInfo, opcode);
// after move info set
if ((opcode == MSG_MOVE_SET_WALK_MODE || opcode == MSG_MOVE_SET_RUN_MODE))
plMover->UpdateWalkMode(plMover, false);
if(plMover->isMovingOrTurning())
plMover->RemoveSpellsCausingAura(SPELL_AURA_FEIGN_DEATH);
if(movementInfo.GetPos()->z < -500.0f)
{
if(plMover->InBattleGround()
&& plMover->GetBattleGround()
&& plMover->GetBattleGround()->HandlePlayerUnderMap(_player))
{
// do nothing, the handle already did if returned true
}
else
{
// NOTE: this is actually called many times while falling
// even after the player has been teleported away
// TODO: discard movement packets after the player is rooted
if(plMover->isAlive())
{
plMover->EnvironmentalDamage(DAMAGE_FALL_TO_VOID, GetPlayer()->GetMaxHealth());
// pl can be alive if GM/etc
if(!plMover->isAlive())
{
// change the death state to CORPSE to prevent the death timer from
// starting in the next player update
plMover->KillPlayer();
plMover->BuildPlayerRepop();
}
}
// cancel the death timer here if started
plMover->RepopAtGraveyard();
}
}
}
else // creature charmed
{
if(mover->IsInWorld())
mover->GetMap()->CreatureRelocation((Creature*)mover, movementInfo.GetPos()->x, movementInfo.GetPos()->y, movementInfo.GetPos()->z, movementInfo.GetPos()->o);
}
}
