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TrinityCore/src/server/game/Server/WorldSocket.cpp
Shauren cdfaecda52 Core/Network: Cleanup asio using directives
2023-07-15 00:43:19 +02:00

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/*
* This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "WorldSocket.h"
#include "AuthenticationPackets.h"
#include "BattlenetRpcErrorCodes.h"
#include "CharacterPackets.h"
#include "CryptoHash.h"
#include "CryptoRandom.h"
#include "DatabaseEnv.h"
#include "Errors.h"
#include "GameTime.h"
#include "HMAC.h"
#include "IPLocation.h"
#include "PacketLog.h"
#include "RealmList.h"
#include "RBAC.h"
#include "ScriptMgr.h"
#include "SessionKeyGenerator.h"
#include "World.h"
#include "WorldPacket.h"
#include "WorldSession.h"
#include <zlib.h>
#pragma pack(push, 1)
struct CompressedWorldPacket
{
uint32 UncompressedSize;
uint32 UncompressedAdler;
uint32 CompressedAdler;
};
#pragma pack(pop)
std::string const WorldSocket::ServerConnectionInitialize("WORLD OF WARCRAFT CONNECTION - SERVER TO CLIENT - V2");
std::string const WorldSocket::ClientConnectionInitialize("WORLD OF WARCRAFT CONNECTION - CLIENT TO SERVER - V2");
uint32 const WorldSocket::MinSizeForCompression = 0x400;
uint8 const WorldSocket::AuthCheckSeed[16] = { 0xC5, 0xC6, 0x98, 0x95, 0x76, 0x3F, 0x1D, 0xCD, 0xB6, 0xA1, 0x37, 0x28, 0xB3, 0x12, 0xFF, 0x8A };
uint8 const WorldSocket::SessionKeySeed[16] = { 0x58, 0xCB, 0xCF, 0x40, 0xFE, 0x2E, 0xCE, 0xA6, 0x5A, 0x90, 0xB8, 0x01, 0x68, 0x6C, 0x28, 0x0B };
uint8 const WorldSocket::ContinuedSessionSeed[16] = { 0x16, 0xAD, 0x0C, 0xD4, 0x46, 0xF9, 0x4F, 0xB2, 0xEF, 0x7D, 0xEA, 0x2A, 0x17, 0x66, 0x4D, 0x2F };
uint8 const WorldSocket::EncryptionKeySeed[16] = { 0xE9, 0x75, 0x3C, 0x50, 0x90, 0x93, 0x61, 0xDA, 0x3B, 0x07, 0xEE, 0xFA, 0xFF, 0x9D, 0x41, 0xB8 };
WorldSocket::WorldSocket(boost::asio::ip::tcp::socket&& socket) : Socket(std::move(socket)),
_type(CONNECTION_TYPE_REALM), _key(0), _OverSpeedPings(0),
_worldSession(nullptr), _authed(false), _canRequestHotfixes(true), _sendBufferSize(4096), _compressionStream(nullptr)
{
Trinity::Crypto::GetRandomBytes(_serverChallenge);
_sessionKey.fill(0);
_encryptKey.fill(0);
_headerBuffer.Resize(sizeof(IncomingPacketHeader));
}
WorldSocket::~WorldSocket()
{
if (_compressionStream)
{
deflateEnd(_compressionStream);
delete _compressionStream;
}
}
void WorldSocket::Start()
{
std::string ip_address = GetRemoteIpAddress().to_string();
LoginDatabasePreparedStatement* stmt = LoginDatabase.GetPreparedStatement(LOGIN_SEL_IP_INFO);
stmt->setString(0, ip_address);
_queryProcessor.AddCallback(LoginDatabase.AsyncQuery(stmt).WithPreparedCallback(std::bind(&WorldSocket::CheckIpCallback, this, std::placeholders::_1)));
}
void WorldSocket::CheckIpCallback(PreparedQueryResult result)
{
if (result)
{
bool banned = false;
do
{
Field* fields = result->Fetch();
if (fields[0].GetUInt64() != 0)
banned = true;
} while (result->NextRow());
if (banned)
{
TC_LOG_ERROR("network", "WorldSocket::CheckIpCallback: Sent Auth Response (IP {} banned).", GetRemoteIpAddress().to_string());
DelayedCloseSocket();
return;
}
}
_packetBuffer.Resize(ClientConnectionInitialize.length() + 1);
AsyncReadWithCallback(&WorldSocket::InitializeHandler);
MessageBuffer initializer;
initializer.Write(ServerConnectionInitialize.c_str(), ServerConnectionInitialize.length());
initializer.Write("\n", 1);
// - IoContext.run thread, safe.
QueuePacket(std::move(initializer));
}
void WorldSocket::InitializeHandler(boost::system::error_code error, std::size_t transferedBytes)
{
if (error)
{
CloseSocket();
return;
}
GetReadBuffer().WriteCompleted(transferedBytes);
MessageBuffer& packet = GetReadBuffer();
if (packet.GetActiveSize() > 0)
{
if (_packetBuffer.GetRemainingSpace() > 0)
{
// need to receive the header
std::size_t readHeaderSize = std::min(packet.GetActiveSize(), _packetBuffer.GetRemainingSpace());
_packetBuffer.Write(packet.GetReadPointer(), readHeaderSize);
packet.ReadCompleted(readHeaderSize);
if (_packetBuffer.GetRemainingSpace() > 0)
{
// Couldn't receive the whole header this time.
ASSERT(packet.GetActiveSize() == 0);
AsyncReadWithCallback(&WorldSocket::InitializeHandler);
return;
}
try
{
ByteBuffer buffer(std::move(_packetBuffer));
std::string initializer = buffer.ReadString(ClientConnectionInitialize.length());
if (initializer != ClientConnectionInitialize)
{
CloseSocket();
return;
}
uint8 terminator;
buffer >> terminator;
if (terminator != '\n')
{
CloseSocket();
return;
}
}
catch (ByteBufferException const& ex)
{
TC_LOG_ERROR("network", "WorldSocket::InitializeHandler ByteBufferException {} occured while parsing initial packet from {}",
ex.what(), GetRemoteIpAddress().to_string());
CloseSocket();
return;
}
_compressionStream = new z_stream();
_compressionStream->zalloc = (alloc_func)nullptr;
_compressionStream->zfree = (free_func)nullptr;
_compressionStream->opaque = (voidpf)nullptr;
_compressionStream->avail_in = 0;
_compressionStream->next_in = nullptr;
int32 z_res = deflateInit2(_compressionStream, sWorld->getIntConfig(CONFIG_COMPRESSION), Z_DEFLATED, -15, 8, Z_DEFAULT_STRATEGY);
if (z_res != Z_OK)
{
CloseSocket();
TC_LOG_ERROR("network", "Can't initialize packet compression (zlib: deflateInit) Error code: {} ({})", z_res, zError(z_res));
return;
}
_packetBuffer.Reset();
HandleSendAuthSession();
AsyncRead();
return;
}
}
AsyncReadWithCallback(&WorldSocket::InitializeHandler);
}
bool WorldSocket::Update()
{
EncryptablePacket* queued;
MessageBuffer buffer(_sendBufferSize);
while (_bufferQueue.Dequeue(queued))
{
uint32 packetSize = queued->size() + 2 /*opcode*/;
if (packetSize > MinSizeForCompression && queued->NeedsEncryption())
packetSize = deflateBound(_compressionStream, packetSize) + sizeof(CompressedWorldPacket);
// Flush current buffer if too small for next packet
if (buffer.GetRemainingSpace() < packetSize + sizeof(PacketHeader))
{
QueuePacket(std::move(buffer));
buffer.Resize(_sendBufferSize);
}
if (buffer.GetRemainingSpace() >= packetSize + sizeof(PacketHeader))
WritePacketToBuffer(*queued, buffer);
else // single packet larger than _sendBufferSize
{
MessageBuffer packetBuffer(packetSize + sizeof(PacketHeader));
WritePacketToBuffer(*queued, packetBuffer);
QueuePacket(std::move(packetBuffer));
}
delete queued;
}
if (buffer.GetActiveSize() > 0)
QueuePacket(std::move(buffer));
if (!BaseSocket::Update())
return false;
_queryProcessor.ProcessReadyCallbacks();
return true;
}
void WorldSocket::HandleSendAuthSession()
{
WorldPackets::Auth::AuthChallenge challenge;
challenge.Challenge = _serverChallenge;
memcpy(challenge.DosChallenge.data(), Trinity::Crypto::GetRandomBytes<32>().data(), 32);
challenge.DosZeroBits = 1;
SendPacketAndLogOpcode(*challenge.Write());
}
void WorldSocket::OnClose()
{
{
std::lock_guard<std::mutex> sessionGuard(_worldSessionLock);
_worldSession = nullptr;
}
}
void WorldSocket::ReadHandler()
{
if (!IsOpen())
return;
MessageBuffer& packet = GetReadBuffer();
while (packet.GetActiveSize() > 0)
{
if (_headerBuffer.GetRemainingSpace() > 0)
{
// need to receive the header
std::size_t readHeaderSize = std::min(packet.GetActiveSize(), _headerBuffer.GetRemainingSpace());
_headerBuffer.Write(packet.GetReadPointer(), readHeaderSize);
packet.ReadCompleted(readHeaderSize);
if (_headerBuffer.GetRemainingSpace() > 0)
{
// Couldn't receive the whole header this time.
ASSERT(packet.GetActiveSize() == 0);
break;
}
// We just received nice new header
if (!ReadHeaderHandler())
{
CloseSocket();
return;
}
}
// We have full read header, now check the data payload
if (_packetBuffer.GetRemainingSpace() > 0)
{
// need more data in the payload
std::size_t readDataSize = std::min(packet.GetActiveSize(), _packetBuffer.GetRemainingSpace());
_packetBuffer.Write(packet.GetReadPointer(), readDataSize);
packet.ReadCompleted(readDataSize);
if (_packetBuffer.GetRemainingSpace() > 0)
{
// Couldn't receive the whole data this time.
ASSERT(packet.GetActiveSize() == 0);
break;
}
}
// just received fresh new payload
ReadDataHandlerResult result = ReadDataHandler();
_headerBuffer.Reset();
if (result != ReadDataHandlerResult::Ok)
{
if (result != ReadDataHandlerResult::WaitingForQuery)
CloseSocket();
return;
}
}
AsyncRead();
}
void WorldSocket::SetWorldSession(WorldSession* session)
{
std::lock_guard<std::mutex> sessionGuard(_worldSessionLock);
_worldSession = session;
_authed = true;
}
bool WorldSocket::ReadHeaderHandler()
{
ASSERT(_headerBuffer.GetActiveSize() == sizeof(IncomingPacketHeader), "Header size " SZFMTD " different than expected " SZFMTD, _headerBuffer.GetActiveSize(), sizeof(IncomingPacketHeader));
IncomingPacketHeader* header = reinterpret_cast<IncomingPacketHeader*>(_headerBuffer.GetReadPointer());
uint16 encryptedOpcode = header->EncryptedOpcode;
if (!header->IsValidSize())
{
_authCrypt.PeekDecryptRecv(reinterpret_cast<uint8*>(&header->EncryptedOpcode), sizeof(encryptedOpcode));
// CMSG_HOTFIX_REQUEST can be much larger than normal packets, allow receiving it once per session
if (header->EncryptedOpcode != CMSG_HOTFIX_REQUEST || header->Size > 0x100000 || !_canRequestHotfixes)
{
TC_LOG_ERROR("network", "WorldSocket::ReadHeaderHandler(): client {} sent malformed packet (size: {}, opcode {})",
GetRemoteIpAddress().to_string(), header->Size, uint32(header->EncryptedOpcode));
return false;
}
}
_packetBuffer.Resize(header->Size);
_packetBuffer.Write(&encryptedOpcode, sizeof(encryptedOpcode));
return true;
}
WorldSocket::ReadDataHandlerResult WorldSocket::ReadDataHandler()
{
PacketHeader* header = reinterpret_cast<PacketHeader*>(_headerBuffer.GetReadPointer());
if (!_authCrypt.DecryptRecv(_packetBuffer.GetReadPointer(), header->Size, header->Tag))
{
TC_LOG_ERROR("network", "WorldSocket::ReadHeaderHandler(): client {} failed to decrypt packet (size: {})",
GetRemoteIpAddress().to_string(), header->Size);
return ReadDataHandlerResult::Error;
}
WorldPacket packet(std::move(_packetBuffer), GetConnectionType());
OpcodeClient opcode = packet.read<OpcodeClient>();
if (uint32(opcode) >= uint32(NUM_OPCODE_HANDLERS))
{
TC_LOG_ERROR("network", "WorldSocket::ReadHeaderHandler(): client {} sent wrong opcode (opcode: {})",
GetRemoteIpAddress().to_string(), uint32(opcode));
return ReadDataHandlerResult::Error;
}
packet.SetOpcode(opcode);
if (sPacketLog->CanLogPacket())
sPacketLog->LogPacket(packet, CLIENT_TO_SERVER, GetRemoteIpAddress(), GetRemotePort(), GetConnectionType());
std::unique_lock<std::mutex> sessionGuard(_worldSessionLock, std::defer_lock);
switch (opcode)
{
case CMSG_PING:
{
LogOpcodeText(opcode, sessionGuard);
WorldPackets::Auth::Ping ping(std::move(packet));
if (!ping.ReadNoThrow())
{
TC_LOG_ERROR("network", "WorldSocket::ReadDataHandler(): client {} sent malformed CMSG_PING", GetRemoteIpAddress().to_string());
return ReadDataHandlerResult::Error;
}
if (!HandlePing(ping))
return ReadDataHandlerResult::Error;
break;
}
case CMSG_AUTH_SESSION:
{
LogOpcodeText(opcode, sessionGuard);
if (_authed)
{
// locking just to safely log offending user is probably overkill but we are disconnecting him anyway
if (sessionGuard.try_lock())
TC_LOG_ERROR("network", "WorldSocket::ProcessIncoming: received duplicate CMSG_AUTH_SESSION from {}", _worldSession->GetPlayerInfo());
return ReadDataHandlerResult::Error;
}
std::shared_ptr<WorldPackets::Auth::AuthSession> authSession = std::make_shared<WorldPackets::Auth::AuthSession>(std::move(packet));
if (!authSession->ReadNoThrow())
{
TC_LOG_ERROR("network", "WorldSocket::ReadDataHandler(): client {} sent malformed CMSG_AUTH_SESSION", GetRemoteIpAddress().to_string());
return ReadDataHandlerResult::Error;
}
HandleAuthSession(authSession);
return ReadDataHandlerResult::WaitingForQuery;
}
case CMSG_AUTH_CONTINUED_SESSION:
{
LogOpcodeText(opcode, sessionGuard);
if (_authed)
{
// locking just to safely log offending user is probably overkill but we are disconnecting him anyway
if (sessionGuard.try_lock())
TC_LOG_ERROR("network", "WorldSocket::ProcessIncoming: received duplicate CMSG_AUTH_CONTINUED_SESSION from {}", _worldSession->GetPlayerInfo());
return ReadDataHandlerResult::Error;
}
std::shared_ptr<WorldPackets::Auth::AuthContinuedSession> authSession = std::make_shared<WorldPackets::Auth::AuthContinuedSession>(std::move(packet));
if (!authSession->ReadNoThrow())
{
TC_LOG_ERROR("network", "WorldSocket::ReadDataHandler(): client {} sent malformed CMSG_AUTH_CONTINUED_SESSION", GetRemoteIpAddress().to_string());
return ReadDataHandlerResult::Error;
}
HandleAuthContinuedSession(authSession);
return ReadDataHandlerResult::WaitingForQuery;
}
case CMSG_KEEP_ALIVE:
sessionGuard.lock();
LogOpcodeText(opcode, sessionGuard);
if (_worldSession)
{
_worldSession->ResetTimeOutTime(true);
return ReadDataHandlerResult::Ok;
}
TC_LOG_ERROR("network", "WorldSocket::ReadDataHandler: client {} sent CMSG_KEEP_ALIVE without being authenticated", GetRemoteIpAddress().to_string());
return ReadDataHandlerResult::Error;
case CMSG_LOG_DISCONNECT:
LogOpcodeText(opcode, sessionGuard);
packet.rfinish(); // contains uint32 disconnectReason;
break;
case CMSG_ENABLE_NAGLE:
LogOpcodeText(opcode, sessionGuard);
SetNoDelay(false);
break;
case CMSG_CONNECT_TO_FAILED:
{
sessionGuard.lock();
LogOpcodeText(opcode, sessionGuard);
WorldPackets::Auth::ConnectToFailed connectToFailed(std::move(packet));
if (!connectToFailed.ReadNoThrow())
{
TC_LOG_ERROR("network", "WorldSocket::ReadDataHandler(): client {} sent malformed CMSG_CONNECT_TO_FAILED", GetRemoteIpAddress().to_string());
return ReadDataHandlerResult::Error;
}
HandleConnectToFailed(connectToFailed);
break;
}
case CMSG_ENTER_ENCRYPTED_MODE_ACK:
LogOpcodeText(opcode, sessionGuard);
HandleEnterEncryptedModeAck();
break;
case CMSG_HOTFIX_REQUEST:
_canRequestHotfixes = false;
[[fallthrough]];
default:
{
if (opcode == CMSG_TIME_SYNC_RESPONSE)
packet.SetReceiveTime(std::chrono::steady_clock::now());
sessionGuard.lock();
LogOpcodeText(opcode, sessionGuard);
if (!_worldSession)
{
TC_LOG_ERROR("network.opcode", "ProcessIncoming: Client not authed opcode = {}", uint32(opcode));
return ReadDataHandlerResult::Error;
}
OpcodeHandler const* handler = opcodeTable[opcode];
if (!handler)
{
TC_LOG_ERROR("network.opcode", "No defined handler for opcode {} sent by {}", GetOpcodeNameForLogging(static_cast<OpcodeClient>(packet.GetOpcode())), _worldSession->GetPlayerInfo());
break;
}
// Our Idle timer will reset on any non PING opcodes on login screen, allowing us to catch people idling.
_worldSession->ResetTimeOutTime(false);
// Copy the packet to the heap before enqueuing
_worldSession->QueuePacket(new WorldPacket(std::move(packet)));
break;
}
}
return ReadDataHandlerResult::Ok;
}
void WorldSocket::LogOpcodeText(OpcodeClient opcode, std::unique_lock<std::mutex> const& guard) const
{
if (!guard)
{
TC_LOG_TRACE("network.opcode", "C->S: {} {}", GetRemoteIpAddress().to_string(), GetOpcodeNameForLogging(opcode));
}
else
{
TC_LOG_TRACE("network.opcode", "C->S: {} {}", (_worldSession ? _worldSession->GetPlayerInfo() : GetRemoteIpAddress().to_string()),
GetOpcodeNameForLogging(opcode));
}
}
void WorldSocket::SendPacketAndLogOpcode(WorldPacket const& packet)
{
TC_LOG_TRACE("network.opcode", "S->C: {} {}", GetRemoteIpAddress().to_string(), GetOpcodeNameForLogging(static_cast<OpcodeServer>(packet.GetOpcode())));
SendPacket(packet);
}
void WorldSocket::SendPacket(WorldPacket const& packet)
{
if (!IsOpen())
return;
if (sPacketLog->CanLogPacket())
sPacketLog->LogPacket(packet, SERVER_TO_CLIENT, GetRemoteIpAddress(), GetRemotePort(), GetConnectionType());
_bufferQueue.Enqueue(new EncryptablePacket(packet, _authCrypt.IsInitialized()));
}
void WorldSocket::WritePacketToBuffer(EncryptablePacket const& packet, MessageBuffer& buffer)
{
uint16 opcode = packet.GetOpcode();
uint32 packetSize = packet.size();
// Reserve space for buffer
uint8* headerPos = buffer.GetWritePointer();
buffer.WriteCompleted(sizeof(PacketHeader));
uint8* dataPos = buffer.GetWritePointer();
buffer.WriteCompleted(sizeof(opcode));
if (packetSize > MinSizeForCompression && packet.NeedsEncryption())
{
CompressedWorldPacket cmp;
cmp.UncompressedSize = packetSize + 2;
cmp.UncompressedAdler = adler32(adler32(0x9827D8F1, (Bytef*)&opcode, 2), packet.contents(), packetSize);
// Reserve space for compression info - uncompressed size and checksums
uint8* compressionInfo = buffer.GetWritePointer();
buffer.WriteCompleted(sizeof(CompressedWorldPacket));
uint32 compressedSize = CompressPacket(buffer.GetWritePointer(), packet);
cmp.CompressedAdler = adler32(0x9827D8F1, buffer.GetWritePointer(), compressedSize);
memcpy(compressionInfo, &cmp, sizeof(CompressedWorldPacket));
buffer.WriteCompleted(compressedSize);
packetSize = compressedSize + sizeof(CompressedWorldPacket);
opcode = SMSG_COMPRESSED_PACKET;
}
else if (!packet.empty())
buffer.Write(packet.contents(), packet.size());
memcpy(dataPos, &opcode, sizeof(opcode));
packetSize += 2 /*opcode*/;
PacketHeader header;
header.Size = packetSize;
_authCrypt.EncryptSend(dataPos, header.Size, header.Tag);
memcpy(headerPos, &header, sizeof(PacketHeader));
}
uint32 WorldSocket::CompressPacket(uint8* buffer, WorldPacket const& packet)
{
uint32 opcode = packet.GetOpcode();
uint32 bufferSize = deflateBound(_compressionStream, packet.size() + sizeof(uint16));
_compressionStream->next_out = buffer;
_compressionStream->avail_out = bufferSize;
_compressionStream->next_in = (Bytef*)&opcode;
_compressionStream->avail_in = sizeof(uint16);
int32 z_res = deflate(_compressionStream, Z_NO_FLUSH);
if (z_res != Z_OK)
{
TC_LOG_ERROR("network", "Can't compress packet opcode (zlib: deflate) Error code: {} ({}, msg: {})", z_res, zError(z_res), _compressionStream->msg);
return 0;
}
_compressionStream->next_in = (Bytef*)packet.contents();
_compressionStream->avail_in = packet.size();
z_res = deflate(_compressionStream, Z_SYNC_FLUSH);
if (z_res != Z_OK)
{
TC_LOG_ERROR("network", "Can't compress packet data (zlib: deflate) Error code: {} ({}, msg: {})", z_res, zError(z_res), _compressionStream->msg);
return 0;
}
return bufferSize - _compressionStream->avail_out;
}
struct AccountInfo
{
struct
{
uint32 Id;
bool IsLockedToIP;
std::string LastIP;
std::string LockCountry;
LocaleConstant Locale;
bool IsBanned;
} BattleNet;
struct
{
uint32 Id;
std::array<uint8, 64> KeyData;
uint8 Expansion;
int64 MuteTime;
uint32 Recruiter;
std::string OS;
bool IsRectuiter;
AccountTypes Security;
bool IsBanned;
} Game;
bool IsBanned() const { return BattleNet.IsBanned || Game.IsBanned; }
explicit AccountInfo(Field* fields)
{
// 0 1 2 3 4 5 6 7 8 9 10 11
// SELECT a.id, a.session_key, ba.last_ip, ba.locked, ba.lock_country, a.expansion, a.mutetime, ba.locale, a.recruiter, a.os, ba.id, aa.SecurityLevel,
// 12 13 14
// bab.unbandate > UNIX_TIMESTAMP() OR bab.unbandate = bab.bandate, ab.unbandate > UNIX_TIMESTAMP() OR ab.unbandate = ab.bandate, r.id
// FROM account a LEFT JOIN battlenet_accounts ba ON a.battlenet_account = ba.id LEFT JOIN account_access aa ON a.id = aa.AccountID AND aa.RealmID IN (-1, ?)
// LEFT JOIN battlenet_account_bans bab ON ba.id = bab.id LEFT JOIN account_banned ab ON a.id = ab.id LEFT JOIN account r ON a.id = r.recruiter
// WHERE a.username = ? AND LENGTH(a.session_key) = 40 ORDER BY aa.RealmID DESC LIMIT 1
Game.Id = fields[0].GetUInt32();
Game.KeyData = fields[1].GetBinary<64>();
BattleNet.LastIP = fields[2].GetString();
BattleNet.IsLockedToIP = fields[3].GetBool();
BattleNet.LockCountry = fields[4].GetString();
Game.Expansion = fields[5].GetUInt8();
Game.MuteTime = fields[6].GetInt64();
BattleNet.Locale = LocaleConstant(fields[7].GetUInt8());
Game.Recruiter = fields[8].GetUInt32();
Game.OS = fields[9].GetString();
BattleNet.Id = fields[10].GetUInt32();
Game.Security = AccountTypes(fields[11].GetUInt8());
BattleNet.IsBanned = fields[12].GetUInt32() != 0;
Game.IsBanned = fields[13].GetUInt32() != 0;
Game.IsRectuiter = fields[14].GetUInt32() != 0;
if (BattleNet.Locale >= TOTAL_LOCALES)
BattleNet.Locale = LOCALE_enUS;
}
};
void WorldSocket::HandleAuthSession(std::shared_ptr<WorldPackets::Auth::AuthSession> authSession)
{
// Get the account information from the auth database
LoginDatabasePreparedStatement* stmt = LoginDatabase.GetPreparedStatement(LOGIN_SEL_ACCOUNT_INFO_BY_NAME);
stmt->setInt32(0, int32(realm.Id.Realm));
stmt->setString(1, authSession->RealmJoinTicket);
_queryProcessor.AddCallback(LoginDatabase.AsyncQuery(stmt).WithPreparedCallback(std::bind(&WorldSocket::HandleAuthSessionCallback, this, authSession, std::placeholders::_1)));
}
void WorldSocket::HandleAuthSessionCallback(std::shared_ptr<WorldPackets::Auth::AuthSession> authSession, PreparedQueryResult result)
{
// Stop if the account is not found
if (!result)
{
// We can not log here, as we do not know the account. Thus, no accountId.
TC_LOG_ERROR("network", "WorldSocket::HandleAuthSession: Sent Auth Response (unknown account).");
DelayedCloseSocket();
return;
}
RealmBuildInfo const* buildInfo = sRealmList->GetBuildInfo(realm.Build);
if (!buildInfo)
{
SendAuthResponseError(ERROR_BAD_VERSION);
TC_LOG_ERROR("network", "WorldSocket::HandleAuthSession: Missing auth seed for realm build {} ({}).", realm.Build, GetRemoteIpAddress().to_string());
DelayedCloseSocket();
return;
}
AccountInfo account(result->Fetch());
// For hook purposes, we get Remoteaddress at this point.
std::string address = GetRemoteIpAddress().to_string();
Trinity::Crypto::SHA256 digestKeyHash;
digestKeyHash.UpdateData(account.Game.KeyData.data(), account.Game.KeyData.size());
if (account.Game.OS == "Wn64")
digestKeyHash.UpdateData(buildInfo->Win64AuthSeed.data(), buildInfo->Win64AuthSeed.size());
else if (account.Game.OS == "Mc64")
digestKeyHash.UpdateData(buildInfo->Mac64AuthSeed.data(), buildInfo->Mac64AuthSeed.size());
digestKeyHash.Finalize();
Trinity::Crypto::HMAC_SHA256 hmac(digestKeyHash.GetDigest());
hmac.UpdateData(authSession->LocalChallenge);
hmac.UpdateData(_serverChallenge);
hmac.UpdateData(AuthCheckSeed, 16);
hmac.Finalize();
// Check that Key and account name are the same on client and server
if (memcmp(hmac.GetDigest().data(), authSession->Digest.data(), authSession->Digest.size()) != 0)
{
TC_LOG_ERROR("network", "WorldSocket::HandleAuthSession: Authentication failed for account: {} ('{}') address: {}", account.Game.Id, authSession->RealmJoinTicket, address);
DelayedCloseSocket();
return;
}
Trinity::Crypto::SHA256 keyData;
keyData.UpdateData(account.Game.KeyData.data(), account.Game.KeyData.size());
keyData.Finalize();
Trinity::Crypto::HMAC_SHA256 sessionKeyHmac(keyData.GetDigest());
sessionKeyHmac.UpdateData(_serverChallenge);
sessionKeyHmac.UpdateData(authSession->LocalChallenge);
sessionKeyHmac.UpdateData(SessionKeySeed, 16);
sessionKeyHmac.Finalize();
SessionKeyGenerator<Trinity::Crypto::SHA256> sessionKeyGenerator(sessionKeyHmac.GetDigest());
sessionKeyGenerator.Generate(_sessionKey.data(), 40);
Trinity::Crypto::HMAC_SHA256 encryptKeyGen(_sessionKey);
encryptKeyGen.UpdateData(authSession->LocalChallenge);
encryptKeyGen.UpdateData(_serverChallenge);
encryptKeyGen.UpdateData(EncryptionKeySeed, 16);
encryptKeyGen.Finalize();
// only first 16 bytes of the hmac are used
memcpy(_encryptKey.data(), encryptKeyGen.GetDigest().data(), 16);
LoginDatabasePreparedStatement* stmt = nullptr;
if (sWorld->getBoolConfig(CONFIG_ALLOW_LOGGING_IP_ADDRESSES_IN_DATABASE))
{
// As we don't know if attempted login process by ip works, we update last_attempt_ip right away
stmt = LoginDatabase.GetPreparedStatement(LOGIN_UPD_LAST_ATTEMPT_IP);
stmt->setString(0, address);
stmt->setString(1, authSession->RealmJoinTicket);
LoginDatabase.Execute(stmt);
// This also allows to check for possible "hack" attempts on account
}
stmt = LoginDatabase.GetPreparedStatement(LOGIN_UPD_ACCOUNT_INFO_CONTINUED_SESSION);
stmt->setBinary(0, _sessionKey);
stmt->setUInt32(1, account.Game.Id);
LoginDatabase.Execute(stmt);
// First reject the connection if packet contains invalid data or realm state doesn't allow logging in
if (sWorld->IsClosed())
{
SendAuthResponseError(ERROR_DENIED);
TC_LOG_ERROR("network", "WorldSocket::HandleAuthSession: World closed, denying client ({}).", GetRemoteIpAddress().to_string());
DelayedCloseSocket();
return;
}
if (authSession->RealmID != realm.Id.Realm)
{
SendAuthResponseError(ERROR_DENIED);
TC_LOG_ERROR("network", "WorldSocket::HandleAuthSession: Client {} requested connecting with realm id {} but this realm has id {} set in config.",
GetRemoteIpAddress().to_string(), authSession->RealmID, realm.Id.Realm);
DelayedCloseSocket();
return;
}
// Must be done before WorldSession is created
bool wardenActive = sWorld->getBoolConfig(CONFIG_WARDEN_ENABLED);
if (wardenActive && account.Game.OS != "Win" && account.Game.OS != "Wn64" && account.Game.OS != "Mc64")
{
SendAuthResponseError(ERROR_DENIED);
TC_LOG_ERROR("network", "WorldSocket::HandleAuthSession: Client {} attempted to log in using invalid client OS ({}).", address, account.Game.OS);
DelayedCloseSocket();
return;
}
if (IpLocationRecord const* location = sIPLocation->GetLocationRecord(address))
_ipCountry = location->CountryCode;
///- Re-check ip locking (same check as in auth).
if (account.BattleNet.IsLockedToIP)
{
if (account.BattleNet.LastIP != address)
{
SendAuthResponseError(ERROR_RISK_ACCOUNT_LOCKED);
TC_LOG_DEBUG("network", "WorldSocket::HandleAuthSession: Sent Auth Response (Account IP differs. Original IP: {}, new IP: {}).", account.BattleNet.LastIP, address);
// We could log on hook only instead of an additional db log, however action logger is config based. Better keep DB logging as well
sScriptMgr->OnFailedAccountLogin(account.Game.Id);
DelayedCloseSocket();
return;
}
}
else if (!account.BattleNet.LockCountry.empty() && account.BattleNet.LockCountry != "00" && !_ipCountry.empty())
{
if (account.BattleNet.LockCountry != _ipCountry)
{
SendAuthResponseError(ERROR_RISK_ACCOUNT_LOCKED);
TC_LOG_DEBUG("network", "WorldSocket::HandleAuthSession: Sent Auth Response (Account country differs. Original country: {}, new country: {}).", account.BattleNet.LockCountry, _ipCountry);
// We could log on hook only instead of an additional db log, however action logger is config based. Better keep DB logging as well
sScriptMgr->OnFailedAccountLogin(account.Game.Id);
DelayedCloseSocket();
return;
}
}
int64 mutetime = account.Game.MuteTime;
//! Negative mutetime indicates amount of seconds to be muted effective on next login - which is now.
if (mutetime < 0)
{
mutetime = GameTime::GetGameTime() + std::llabs(mutetime);
stmt = LoginDatabase.GetPreparedStatement(LOGIN_UPD_MUTE_TIME_LOGIN);
stmt->setInt64(0, mutetime);
stmt->setUInt32(1, account.Game.Id);
LoginDatabase.Execute(stmt);
}
if (account.IsBanned())
{
SendAuthResponseError(ERROR_GAME_ACCOUNT_BANNED);
TC_LOG_ERROR("network", "WorldSocket::HandleAuthSession: Sent Auth Response (Account banned).");
sScriptMgr->OnFailedAccountLogin(account.Game.Id);
DelayedCloseSocket();
return;
}
// Check locked state for server
AccountTypes allowedAccountType = sWorld->GetPlayerSecurityLimit();
TC_LOG_DEBUG("network", "Allowed Level: {} Player Level {}", allowedAccountType, account.Game.Security);
if (allowedAccountType > SEC_PLAYER && account.Game.Security < allowedAccountType)
{
SendAuthResponseError(ERROR_SERVER_IS_PRIVATE);
TC_LOG_DEBUG("network", "WorldSocket::HandleAuthSession: User tries to login but his security level is not enough");
sScriptMgr->OnFailedAccountLogin(account.Game.Id);
DelayedCloseSocket();
return;
}
TC_LOG_DEBUG("network", "WorldSocket::HandleAuthSession: Client '{}' authenticated successfully from {}.", authSession->RealmJoinTicket, address);
if (sWorld->getBoolConfig(CONFIG_ALLOW_LOGGING_IP_ADDRESSES_IN_DATABASE))
{
// Update the last_ip in the database as it was successful for login
stmt = LoginDatabase.GetPreparedStatement(LOGIN_UPD_LAST_IP);
stmt->setString(0, address);
stmt->setString(1, authSession->RealmJoinTicket);
LoginDatabase.Execute(stmt);
}
// At this point, we can safely hook a successful login
sScriptMgr->OnAccountLogin(account.Game.Id);
_authed = true;
_worldSession = new WorldSession(account.Game.Id, std::move(authSession->RealmJoinTicket), account.BattleNet.Id, shared_from_this(), account.Game.Security,
account.Game.Expansion, mutetime, account.Game.OS, account.BattleNet.Locale, account.Game.Recruiter, account.Game.IsRectuiter);
// Initialize Warden system only if it is enabled by config
if (wardenActive)
_worldSession->InitWarden(_sessionKey);
_queryProcessor.AddCallback(_worldSession->LoadPermissionsAsync().WithPreparedCallback(std::bind(&WorldSocket::LoadSessionPermissionsCallback, this, std::placeholders::_1)));
AsyncRead();
}
void WorldSocket::LoadSessionPermissionsCallback(PreparedQueryResult result)
{
// RBAC must be loaded before adding session to check for skip queue permission
_worldSession->GetRBACData()->LoadFromDBCallback(result);
SendPacketAndLogOpcode(*WorldPackets::Auth::EnterEncryptedMode(_encryptKey, true).Write());
}
void WorldSocket::HandleAuthContinuedSession(std::shared_ptr<WorldPackets::Auth::AuthContinuedSession> authSession)
{
WorldSession::ConnectToKey key;
key.Raw = authSession->Key;
_type = ConnectionType(key.Fields.ConnectionType);
if (_type != CONNECTION_TYPE_INSTANCE)
{
SendAuthResponseError(ERROR_DENIED);
DelayedCloseSocket();
return;
}
uint32 accountId = uint32(key.Fields.AccountId);
LoginDatabasePreparedStatement* stmt = LoginDatabase.GetPreparedStatement(LOGIN_SEL_ACCOUNT_INFO_CONTINUED_SESSION);
stmt->setUInt32(0, accountId);
_queryProcessor.AddCallback(LoginDatabase.AsyncQuery(stmt).WithPreparedCallback(std::bind(&WorldSocket::HandleAuthContinuedSessionCallback, this, authSession, std::placeholders::_1)));
}
void WorldSocket::HandleAuthContinuedSessionCallback(std::shared_ptr<WorldPackets::Auth::AuthContinuedSession> authSession, PreparedQueryResult result)
{
if (!result)
{
SendAuthResponseError(ERROR_DENIED);
DelayedCloseSocket();
return;
}
WorldSession::ConnectToKey key;
_key = key.Raw = authSession->Key;
uint32 accountId = uint32(key.Fields.AccountId);
Field* fields = result->Fetch();
std::string login = fields[0].GetString();
_sessionKey = fields[1].GetBinary<SESSION_KEY_LENGTH>();
Trinity::Crypto::HMAC_SHA256 hmac(_sessionKey);
hmac.UpdateData(reinterpret_cast<uint8 const*>(&authSession->Key), sizeof(authSession->Key));
hmac.UpdateData(authSession->LocalChallenge);
hmac.UpdateData(_serverChallenge);
hmac.UpdateData(ContinuedSessionSeed, 16);
hmac.Finalize();
if (memcmp(hmac.GetDigest().data(), authSession->Digest.data(), authSession->Digest.size()))
{
TC_LOG_ERROR("network", "WorldSocket::HandleAuthContinuedSession: Authentication failed for account: {} ('{}') address: {}", accountId, login, GetRemoteIpAddress().to_string());
DelayedCloseSocket();
return;
}
Trinity::Crypto::HMAC_SHA256 encryptKeyGen(_sessionKey);
encryptKeyGen.UpdateData(authSession->LocalChallenge);
encryptKeyGen.UpdateData(_serverChallenge);
encryptKeyGen.UpdateData(EncryptionKeySeed, 16);
encryptKeyGen.Finalize();
// only first 16 bytes of the hmac are used
memcpy(_encryptKey.data(), encryptKeyGen.GetDigest().data(), 16);
SendPacketAndLogOpcode(*WorldPackets::Auth::EnterEncryptedMode(_encryptKey, true).Write());
AsyncRead();
}
void WorldSocket::HandleConnectToFailed(WorldPackets::Auth::ConnectToFailed& connectToFailed)
{
if (_worldSession)
{
if (_worldSession->PlayerLoading())
{
switch (connectToFailed.Serial)
{
case WorldPackets::Auth::ConnectToSerial::WorldAttempt1:
_worldSession->SendConnectToInstance(WorldPackets::Auth::ConnectToSerial::WorldAttempt2);
break;
case WorldPackets::Auth::ConnectToSerial::WorldAttempt2:
_worldSession->SendConnectToInstance(WorldPackets::Auth::ConnectToSerial::WorldAttempt3);
break;
case WorldPackets::Auth::ConnectToSerial::WorldAttempt3:
_worldSession->SendConnectToInstance(WorldPackets::Auth::ConnectToSerial::WorldAttempt4);
break;
case WorldPackets::Auth::ConnectToSerial::WorldAttempt4:
_worldSession->SendConnectToInstance(WorldPackets::Auth::ConnectToSerial::WorldAttempt5);
break;
case WorldPackets::Auth::ConnectToSerial::WorldAttempt5:
{
TC_LOG_ERROR("network", "{} failed to connect 5 times to world socket, aborting login", _worldSession->GetPlayerInfo());
_worldSession->AbortLogin(WorldPackets::Character::LoginFailureReason::NoWorld);
break;
}
default:
return;
}
}
//else
//{
// transfer_aborted when/if we get map node redirection
// SendPacketAndLogOpcode(*WorldPackets::Auth::ResumeComms().Write());
//}
}
}
void WorldSocket::HandleEnterEncryptedModeAck()
{
_authCrypt.Init(_encryptKey);
if (_type == CONNECTION_TYPE_REALM)
sWorld->AddSession(_worldSession);
else
sWorld->AddInstanceSocket(shared_from_this(), _key);
}
void WorldSocket::SendAuthResponseError(uint32 code)
{
WorldPackets::Auth::AuthResponse response;
response.Result = code;
SendPacketAndLogOpcode(*response.Write());
}
bool WorldSocket::HandlePing(WorldPackets::Auth::Ping& ping)
{
using namespace std::chrono;
if (_LastPingTime == steady_clock::time_point())
{
_LastPingTime = steady_clock::now();
}
else
{
steady_clock::time_point now = steady_clock::now();
steady_clock::duration diff = now - _LastPingTime;
_LastPingTime = now;
if (diff < seconds(27))
{
++_OverSpeedPings;
uint32 maxAllowed = sWorld->getIntConfig(CONFIG_MAX_OVERSPEED_PINGS);
if (maxAllowed && _OverSpeedPings > maxAllowed)
{
std::unique_lock<std::mutex> sessionGuard(_worldSessionLock);
if (_worldSession && !_worldSession->HasPermission(rbac::RBAC_PERM_SKIP_CHECK_OVERSPEED_PING))
{
TC_LOG_ERROR("network", "WorldSocket::HandlePing: {} kicked for over-speed pings (address: {})",
_worldSession->GetPlayerInfo(), GetRemoteIpAddress().to_string());
return false;
}
}
}
else
_OverSpeedPings = 0;
}
{
std::lock_guard<std::mutex> sessionGuard(_worldSessionLock);
if (_worldSession)
_worldSession->SetLatency(ping.Latency);
else
{
TC_LOG_ERROR("network", "WorldSocket::HandlePing: peer sent CMSG_PING, but is not authenticated or got recently kicked, address = {}", GetRemoteIpAddress().to_string());
return false;
}
}
SendPacketAndLogOpcode(*WorldPackets::Auth::Pong(ping.Serial).Write());
return true;
}
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