WorldSession::DosProtection Class Reference

#include <WorldSession.h>

Public Member Functions
	DosProtection (WorldSession *s)
bool	EvaluateOpcode (WorldPacket &p, time_t time) const

Protected Types
enum	Policy { POLICY_LOG, POLICY_KICK, POLICY_BAN }

Protected Member Functions
uint32	GetMaxPacketCounterAllowed (uint16 opcode) const

Protected Attributes
WorldSession *	Session

Private Types
typedef std::unordered_map < uint16, PacketCounter >	PacketThrottlingMap

Private Member Functions
	DosProtection (DosProtection const &right)=delete
DosProtection &	operator= (DosProtection const &right)=delete

Private Attributes
Policy	_policy
PacketThrottlingMap	_PacketThrottlingMap

Friends
class	World

Member Typedef Documentation

typedef std::unordered_map<uint16, PacketCounter> WorldSession::DosProtection::PacketThrottlingMap

private

Constructor & Destructor Documentation

WorldSession::DosProtection::DosProtection ( WorldSession *  s )

inline

: Session(s), _policy((Policy)sWorld->getIntConfig(CONFIG_PACKET_SPOOF_POLICY)) { }

WorldSession::DosProtection::DosProtection ( DosProtection const &  right )

privatedelete

Member Function Documentation

bool WorldSession::DosProtection::EvaluateOpcode	(	WorldPacket &	p,
		time_t	time
	)		const

{
 uint32 maxPacketCounterAllowed = GetMaxPacketCounterAllowed(p.GetOpcode());

 // Return true if there no limit for the opcode
 if (!maxPacketCounterAllowed)
 return true;

 PacketCounter& packetCounter = _PacketThrottlingMap[p.GetOpcode()];
 if (packetCounter.lastReceiveTime != time)
 {
 packetCounter.lastReceiveTime = time;
 packetCounter.amountCounter = 0;
 }

 // Check if player is flooding some packets
 if (++packetCounter.amountCounter <= maxPacketCounterAllowed)
 return true;

 TC_LOG_WARN("network", "AntiDOS: Account %u, IP: %s, Ping: %u, Character: %s, flooding packet (opc: %s (0x%X), count: %u)",
 Session->GetAccountId(), Session->GetRemoteAddress().c_str(), Session->GetLatency(), Session->GetPlayerName().c_str(),
 opcodeTable[static_cast<OpcodeClient>(p.GetOpcode())]->Name, p.GetOpcode(), packetCounter.amountCounter);

 switch (_policy)
 {
 case POLICY_LOG:
 return true;
 case POLICY_KICK:
 {
 TC_LOG_WARN("network", "AntiDOS: Player kicked!");
 Session->KickPlayer();
 return false;
 }
 case POLICY_BAN:
 {
 BanMode bm = (BanMode)sWorld->getIntConfig(CONFIG_PACKET_SPOOF_BANMODE);
 uint32 duration = sWorld->getIntConfig(CONFIG_PACKET_SPOOF_BANDURATION); // in seconds
 std::string nameOrIp = "";
 switch (bm)
 {
 case BAN_CHARACTER: // not supported, ban account
 case BAN_ACCOUNT: (void)sAccountMgr->GetName(Session->GetAccountId(), nameOrIp); break;
 case BAN_IP: nameOrIp = Session->GetRemoteAddress(); break;
 }
 sWorld->BanAccount(bm, nameOrIp, duration, "DOS (Packet Flooding/Spoofing", "Server: AutoDOS");
 TC_LOG_WARN("network", "AntiDOS: Player automatically banned for %u seconds.", duration);
 Session->KickPlayer();
 return false;
 }
 default: // invalid policy
 return true;
 }
}

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uint32 WorldSession::DosProtection::GetMaxPacketCounterAllowed ( uint16  opcode ) const

protected

{
 uint32 maxPacketCounterAllowed;
 switch (opcode)
 {
 // CPU usage sending 2000 packets/second on a 3.70 GHz 4 cores on Win x64
 // [% CPU mysqld] [%CPU worldserver RelWithDebInfo]
 case CMSG_PLAYER_LOGIN: // 0 0.5
 case CMSG_QUERY_PLAYER_NAME: // 0 1
 case CMSG_QUERY_PET_NAME: // 0 1
 case CMSG_QUERY_NPC_TEXT: // 0 1
 case CMSG_ATTACK_STOP: // 0 1
 case CMSG_QUERY_TIME: // 0 1
 case CMSG_QUERY_CORPSE_TRANSPORT: // 0 1
 case CMSG_MOVE_TIME_SKIPPED: // 0 1
 case CMSG_QUERY_NEXT_MAIL_TIME: // 0 1
 case CMSG_SET_SHEATHED: // 0 1
 case CMSG_UPDATE_RAID_TARGET: // 0 1
 case CMSG_LOGOUT_REQUEST: // 0 1
 case CMSG_PET_RENAME: // 0 1
 case CMSG_QUEST_GIVER_REQUEST_REWARD: // 0 1
 case CMSG_COMPLETE_CINEMATIC: // 0 1
 case CMSG_BANKER_ACTIVATE: // 0 1
 case CMSG_BUY_BANK_SLOT: // 0 1
 case CMSG_OPT_OUT_OF_LOOT: // 0 1
 case CMSG_DUEL_RESPONSE: // 0 1
 case CMSG_CALENDAR_COMPLAIN: // 0 1
 case CMSG_QUERY_QUEST_INFO: // 0 1.5
 case CMSG_QUERY_GAME_OBJECT: // 0 1.5
 case CMSG_QUERY_CREATURE: // 0 1.5
 case CMSG_QUEST_GIVER_STATUS_QUERY: // 0 1.5
 case CMSG_QUERY_GUILD_INFO: // 0 1.5
 case CMSG_TAXI_NODE_STATUS_QUERY: // 0 1.5
 case CMSG_TAXI_QUERY_AVAILABLE_NODES: // 0 1.5
 case CMSG_QUEST_GIVER_QUERY_QUEST: // 0 1.5
 case CMSG_QUERY_PAGE_TEXT: // 0 1.5
 case CMSG_GUILD_BANK_TEXT_QUERY: // 0 1.5
 case CMSG_QUERY_CORPSE_LOCATION_FROM_CLIENT: // 0 1.5
 case CMSG_MOVE_SET_FACING: // 0 1.5
 case CMSG_REQUEST_PARTY_MEMBER_STATS: // 0 1.5
 case CMSG_QUEST_GIVER_COMPLETE_QUEST: // 0 1.5
 case CMSG_SET_ACTION_BUTTON: // 0 1.5
 case CMSG_RESET_INSTANCES: // 0 1.5
 case CMSG_HEARTH_AND_RESURRECT: // 0 1.5
 case CMSG_TOGGLE_PVP: // 0 1.5
 case CMSG_PET_ABANDON: // 0 1.5
 case CMSG_ACTIVATE_TAXI: // 0 1.5
 case CMSG_SELF_RES: // 0 1.5
 case CMSG_UNLEARN_SKILL: // 0 1.5
 case CMSG_SAVE_EQUIPMENT_SET: // 0 1.5
 case CMSG_DELETE_EQUIPMENT_SET: // 0 1.5
 case CMSG_DISMISS_CRITTER: // 0 1.5
 case CMSG_REPOP_REQUEST: // 0 1.5
 case CMSG_PARTY_INVITE: // 0 1.5
 case CMSG_PARTY_INVITE_RESPONSE: // 0 1.5
 case CMSG_PARTY_UNINVITE: // 0 1.5
 case CMSG_LEAVE_GROUP: // 0 1.5
 case CMSG_BATTLEMASTER_JOIN_ARENA: // 0 1.5
 case CMSG_BATTLEFIELD_LEAVE: // 0 1.5
 case CMSG_GUILD_BANK_LOG_QUERY: // 0 2
 case CMSG_LOGOUT_CANCEL: // 0 2
 case CMSG_ALTER_APPEARANCE: // 0 2
 case CMSG_QUEST_CONFIRM_ACCEPT: // 0 2
 case CMSG_GUILD_EVENT_LOG_QUERY: // 0 2.5
 case CMSG_QUEST_GIVER_STATUS_MULTIPLE_QUERY: // 0 2.5
 case CMSG_BEGIN_TRADE: // 0 2.5
 case CMSG_INITIATE_TRADE: // 0 3
 case CMSG_CHAT_ADDON_MESSAGE_GUILD: // 0 3.5
 case CMSG_CHAT_ADDON_MESSAGE_OFFICER: // 0 3.5
 case CMSG_CHAT_ADDON_MESSAGE_PARTY: // 0 3.5
 case CMSG_CHAT_ADDON_MESSAGE_RAID: // 0 3.5
 case CMSG_CHAT_ADDON_MESSAGE_WHISPER: // 0 3.5
 case CMSG_CHAT_MESSAGE_AFK: // 0 3.5
 case CMSG_CHAT_MESSAGE_CHANNEL: // 0 3.5
 case CMSG_CHAT_MESSAGE_DND: // 0 3.5
 case CMSG_CHAT_MESSAGE_EMOTE: // 0 3.5
 case CMSG_CHAT_MESSAGE_GUILD: // 0 3.5
 case CMSG_CHAT_MESSAGE_OFFICER: // 0 3.5
 case CMSG_CHAT_MESSAGE_PARTY: // 0 3.5
 case CMSG_CHAT_MESSAGE_RAID: // 0 3.5
 case CMSG_CHAT_MESSAGE_RAID_WARNING: // 0 3.5
 case CMSG_CHAT_MESSAGE_SAY: // 0 3.5
 case CMSG_CHAT_MESSAGE_WHISPER: // 0 3.5
 case CMSG_CHAT_MESSAGE_YELL: // 0 3.5
 case CMSG_INSPECT: // 0 3.5
 case CMSG_AREA_SPIRIT_HEALER_QUERY: // not profiled
 case CMSG_STAND_STATE_CHANGE: // not profiled
 case CMSG_RANDOM_ROLL: // not profiled
 case CMSG_TIME_SYNC_RESPONSE: // not profiled
 case CMSG_MOVE_FORCE_RUN_SPEED_CHANGE_ACK: // not profiled
 {
 // "0" is a magic number meaning there's no limit for the opcode.
 // All the opcodes above must cause little CPU usage and no sync/async database queries at all
 maxPacketCounterAllowed = 0;
 break;
 }

 case CMSG_QUEST_GIVER_ACCEPT_QUEST: // 0 4
 case CMSG_QUEST_LOG_REMOVE_QUEST: // 0 4
 case CMSG_QUEST_GIVER_CHOOSE_REWARD: // 0 4
 case CMSG_SEND_CONTACT_LIST: // 0 5
 case CMSG_AUTOBANK_ITEM: // 0 6
 case CMSG_AUTOSTORE_BANK_ITEM: // 0 6
 case CMSG_WHO: // 0 7
 case CMSG_RIDE_VEHICLE_INTERACT: // 0 8
 case CMSG_MOVE_HEARTBEAT:
 {
 maxPacketCounterAllowed = 200;
 break;
 }

 case CMSG_GUILD_SET_MEMBER_NOTE: // 1 2 1 async db query
 case CMSG_SET_CONTACT_NOTES: // 1 2.5 1 async db query
 case CMSG_CALENDAR_GET: // 0 1.5 medium upload bandwidth usage
 case CMSG_GUILD_BANK_QUERY_TAB: // 0 3.5 medium upload bandwidth usage
 case CMSG_QUERY_INSPECT_ACHIEVEMENTS: // 0 13 high upload bandwidth usage
 case CMSG_GAME_OBJ_REPORT_USE: // not profiled
 case CMSG_GAME_OBJ_USE: // not profiled
 case CMSG_DECLINE_PETITION: // not profiled
 {
 maxPacketCounterAllowed = 50;
 break;
 }

 case CMSG_QUEST_POI_QUERY: // 0 25 very high upload bandwidth usage
 {
 maxPacketCounterAllowed = MAX_QUEST_LOG_SIZE;
 break;
 }

 case CMSG_SPELL_CLICK: // not profiled
 case CMSG_MOVE_DISMISS_VEHICLE: // not profiled
 {
 maxPacketCounterAllowed = 20;
 break;
 }

 case CMSG_SIGN_PETITION: // 9 4 2 sync 1 async db queries
 case CMSG_TURN_IN_PETITION: // 8 5.5 2 sync db query
 case CMSG_CHANGE_SUB_GROUP: // 6 5 1 sync 1 async db queries
 case CMSG_QUERY_PETITION: // 4 3.5 1 sync db query
 case CMSG_CHAR_CUSTOMIZE: // 5 5 1 sync db query
 case CMSG_CHAR_RACE_OR_FACTION_CHANGE: // 5 5 1 sync db query
 case CMSG_CHAR_DELETE: // 4 4 1 sync db query
 case CMSG_DEL_FRIEND: // 7 5 1 async db query
 case CMSG_ADD_FRIEND: // 6 4 1 async db query
 case CMSG_CHARACTER_RENAME_REQUEST: // 5 3 1 async db query
 case CMSG_BUG_REPORT: // 1 1 1 async db query
 case CMSG_SET_PARTY_LEADER: // 1 2 1 async db query
 case CMSG_CONVERT_RAID: // 1 5 1 async db query
 case CMSG_SET_ASSISTANT_LEADER: // 1 2 1 async db query
 case CMSG_CALENDAR_ADD_EVENT: // 21 10 2 async db query
 case CMSG_MOVE_CHANGE_VEHICLE_SEATS: // not profiled
 case CMSG_PETITION_BUY: // not profiled 1 sync 1 async db queries
 case CMSG_REQUEST_VEHICLE_PREV_SEAT: // not profiled
 case CMSG_REQUEST_VEHICLE_NEXT_SEAT: // not profiled
 case CMSG_REQUEST_VEHICLE_SWITCH_SEAT: // not profiled
 case CMSG_REQUEST_VEHICLE_EXIT: // not profiled
 case CMSG_EJECT_PASSENGER: // not profiled
 case CMSG_ITEM_PURCHASE_REFUND: // not profiled
 case CMSG_SOCKET_GEMS: // not profiled
 case CMSG_WRAP_ITEM: // not profiled
 case CMSG_REPORT_PVP_PLAYER_AFK: // not profiled
 {
 maxPacketCounterAllowed = 10;
 break;
 }

 case CMSG_CREATE_CHARACTER: // 7 5 3 async db queries
 case CMSG_ENUM_CHARACTERS: // 22 3 2 async db queries
 case CMSG_ENUM_CHARACTERS_DELETED_BY_CLIENT: // 22 3 2 async db queries
 case CMSG_SUPPORT_TICKET_SUBMIT_BUG: // not profiled 1 async db query
 case CMSG_SUPPORT_TICKET_SUBMIT_SUGGESTION: // not profiled 1 async db query
 case CMSG_SUPPORT_TICKET_SUBMIT_COMPLAINT: // not profiled 1 async db query
 case CMSG_CALENDAR_UPDATE_EVENT: // not profiled
 case CMSG_CALENDAR_REMOVE_EVENT: // not profiled
 case CMSG_CALENDAR_COPY_EVENT: // not profiled
 case CMSG_CALENDAR_EVENT_INVITE: // not profiled
 case CMSG_CALENDAR_EVENT_SIGN_UP: // not profiled
 case CMSG_CALENDAR_EVENT_RSVP: // not profiled
 case CMSG_CALENDAR_EVENT_MODERATOR_STATUS: // not profiled
 case CMSG_CALENDAR_REMOVE_INVITE: // not profiled
 case CMSG_SET_LOOT_METHOD: // not profiled
 case CMSG_GUILD_INVITE_BY_NAME: // not profiled
 case CMSG_ACCEPT_GUILD_INVITE: // not profiled
 case CMSG_GUILD_DECLINE_INVITATION: // not profiled
 case CMSG_GUILD_LEAVE: // not profiled
 case CMSG_GUILD_DELETE: // not profiled
 case CMSG_GUILD_SET_GUILD_MASTER: // not profiled
 case CMSG_GUILD_UPDATE_MOTD_TEXT: // not profiled
 case CMSG_GUILD_SET_RANK_PERMISSIONS: // not profiled
 case CMSG_GUILD_ADD_RANK: // not profiled
 case CMSG_GUILD_DELETE_RANK: // not profiled
 case CMSG_GUILD_UPDATE_INFO_TEXT: // not profiled
 case CMSG_GUILD_BANK_DEPOSIT_MONEY: // not profiled
 case CMSG_GUILD_BANK_WITHDRAW_MONEY: // not profiled
 case CMSG_GUILD_BANK_BUY_TAB: // not profiled
 case CMSG_GUILD_BANK_UPDATE_TAB: // not profiled
 case CMSG_GUILD_BANK_SET_TAB_TEXT: // not profiled
 case CMSG_SAVE_GUILD_EMBLEM: // not profiled
 case CMSG_PETITION_RENAME_GUILD: // not profiled
 case CMSG_CONFIRM_RESPEC_WIPE: // not profiled
 case CMSG_SET_DUNGEON_DIFFICULTY: // not profiled
 case CMSG_SET_RAID_DIFFICULTY: // not profiled
 case CMSG_SET_PARTY_ASSIGNMENT: // not profiled
 case CMSG_DO_READY_CHECK: // not profiled
 {
 maxPacketCounterAllowed = 3;
 break;
 }

 case CMSG_GET_ITEM_PURCHASE_DATA: // not profiled
 {
 maxPacketCounterAllowed = PLAYER_SLOTS_COUNT;
 break;
 }
 default:
 {
 maxPacketCounterAllowed = 100;
 break;
 }
 }

 return maxPacketCounterAllowed;
}

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DosProtection& WorldSession::DosProtection::operator= ( DosProtection const &  right )

privatedelete

Friends And Related Function Documentation

friend class World

friend

Member Data Documentation

PacketThrottlingMap WorldSession::DosProtection::_PacketThrottlingMap

mutableprivate

Policy WorldSession::DosProtection::_policy

private

WorldSession* WorldSession::DosProtection::Session

protected

---

The documentation for this class was generated from the following files:

• src/server/game/Server/WorldSession.h
• src/server/game/Server/WorldSession.cpp