protected override void ProcessAuthTicket(string name, int ownKey, ulong steamId, PendingClient pendingClient, byte[] ticket)
{
if (pendingClient.SteamID == null)
{
bool requireSteamAuth = GameMain.Config.RequireSteamAuthentication;
#if DEBUG
requireSteamAuth = false;
#endif
//steam auth cannot be done (SteamManager not initialized or no ticket given),
//but it's not required either -> let the client join without auth
if ((!Steam.SteamManager.IsInitialized || (ticket?.Length ?? 0) == 0) &&
!requireSteamAuth)
{
pendingClient.Connection.Name = name;
pendingClient.Name = name;
pendingClient.OwnerKey = ownKey;
pendingClient.InitializationStep = serverSettings.HasPassword ? ConnectionInitialization.Password : ConnectionInitialization.ContentPackageOrder;
}
else
{
Steamworks.BeginAuthResult authSessionStartState = Steam.SteamManager.StartAuthSession(ticket, steamId);
if (authSessionStartState != Steamworks.BeginAuthResult.OK)
{
if (requireSteamAuth)
{
RemovePendingClient(pendingClient, DisconnectReason.SteamAuthenticationFailed, "Steam auth session failed to start: " + authSessionStartState.ToString());
return;
}
else
{
steamId = 0;
pendingClient.InitializationStep = serverSettings.HasPassword ? ConnectionInitialization.Password : ConnectionInitialization.ContentPackageOrder;
}
}
pendingClient.SteamID = steamId;
pendingClient.Connection.Name = name;
pendingClient.Name = name;
pendingClient.OwnerKey = ownKey;
pendingClient.AuthSessionStarted = true;
}
}
else
{
if (pendingClient.SteamID != steamId)
{
RemovePendingClient(pendingClient, DisconnectReason.SteamAuthenticationFailed, "SteamID mismatch");
return;
}
}
}
public static Steamworks.BeginAuthResult StartAuthSession(byte[] authTicketData, ulong clientSteamID)
{
if (!isInitialized || !Steamworks.SteamServer.IsValid)
{
return(Steamworks.BeginAuthResult.ServerNotConnectedToSteam);
}
DebugConsole.Log("SteamManager authenticating Steam client " + clientSteamID);
Steamworks.BeginAuthResult startResult = Steamworks.SteamServer.BeginAuthSession(authTicketData, clientSteamID);
if (startResult != Steamworks.BeginAuthResult.OK)
{
DebugConsole.Log("Authentication failed: failed to start auth session (" + startResult.ToString() + ")");
}
return(startResult);
}
private void OnP2PData(ulong steamId, byte[] data, int dataLength, int channel)
{
if (!isActive)
{
return;
}
RemotePeer remotePeer = remotePeers.Find(p => p.SteamID == steamId);
if (remotePeer == null || remotePeer.DisconnectTime != null)
{
return;
}
IWriteMessage outMsg = new WriteOnlyMessage();
outMsg.Write(steamId);
outMsg.Write(data, 1, dataLength - 1);
DeliveryMethod deliveryMethod = (DeliveryMethod)data[0];
byte incByte = data[1];
bool isCompressed = (incByte & (byte)PacketHeader.IsCompressed) != 0;
bool isConnectionInitializationStep = (incByte & (byte)PacketHeader.IsConnectionInitializationStep) != 0;
bool isDisconnectMessage = (incByte & (byte)PacketHeader.IsDisconnectMessage) != 0;
bool isServerMessage = (incByte & (byte)PacketHeader.IsServerMessage) != 0;
bool isHeartbeatMessage = (incByte & (byte)PacketHeader.IsHeartbeatMessage) != 0;
if (!remotePeer.Authenticated)
{
if (!remotePeer.Authenticating)
{
if (isConnectionInitializationStep)
{
remotePeer.DisconnectTime = null;
IReadMessage authMsg = new ReadOnlyMessage(data, isCompressed, 2, dataLength - 2, null);
ConnectionInitialization initializationStep = (ConnectionInitialization)authMsg.ReadByte();
//Console.WriteLine("received init step from "+steamId.ToString()+" ("+initializationStep.ToString()+")");
if (initializationStep == ConnectionInitialization.SteamTicketAndVersion)
{
remotePeer.Authenticating = true;
authMsg.ReadString(); //skip name
authMsg.ReadInt32(); //skip owner key
authMsg.ReadUInt64(); //skip steamid
UInt16 ticketLength = authMsg.ReadUInt16();
byte[] ticket = authMsg.ReadBytes(ticketLength);
Steamworks.BeginAuthResult authSessionStartState = Steam.SteamManager.StartAuthSession(ticket, steamId);
if (authSessionStartState != Steamworks.BeginAuthResult.OK)
{
DisconnectPeer(remotePeer, DisconnectReason.SteamAuthenticationFailed.ToString() + "/ Steam auth session failed to start: " + authSessionStartState.ToString());
return;
}
}
}
}
}
if (remotePeer.Authenticating)
{
remotePeer.UnauthedMessages.Add(new RemotePeer.UnauthedMessage()
{
DeliveryMethod = deliveryMethod, Message = outMsg
});
}
else
{
byte[] msgToSend = (byte[])outMsg.Buffer.Clone();
Array.Resize(ref msgToSend, outMsg.LengthBytes);
ChildServerRelay.Write(msgToSend);
}
}
private void ReadConnectionInitializationStep(PendingClient pendingClient, NetIncomingMessage inc)
{
if (netServer == null)
{
return;
}
pendingClient.TimeOut = NetworkConnection.TimeoutThreshold;
ConnectionInitialization initializationStep = (ConnectionInitialization)inc.ReadByte();
//DebugConsole.NewMessage(initializationStep+" "+pendingClient.InitializationStep);
if (pendingClient.InitializationStep != initializationStep)
{
return;
}
pendingClient.UpdateTime = Timing.TotalTime + Timing.Step;
switch (initializationStep)
{
case ConnectionInitialization.SteamTicketAndVersion:
string name = Client.SanitizeName(inc.ReadString());
int ownKey = inc.ReadInt32();
UInt64 steamId = inc.ReadUInt64();
UInt16 ticketLength = inc.ReadUInt16();
byte[] ticket = inc.ReadBytes(ticketLength);
if (!Client.IsValidName(name, serverSettings))
{
if (OwnerConnection != null ||
!IPAddress.IsLoopback(pendingClient.Connection.RemoteEndPoint.Address.MapToIPv4NoThrow()) &&
ownerKey == null || ownKey == 0 && ownKey != ownerKey)
{
RemovePendingClient(pendingClient, DisconnectReason.InvalidName, "The name \"" + name + "\" is invalid");
return;
}
}
string version = inc.ReadString();
bool isCompatibleVersion = NetworkMember.IsCompatible(version, GameMain.Version.ToString()) ?? false;
if (!isCompatibleVersion)
{
RemovePendingClient(pendingClient, DisconnectReason.InvalidVersion,
$"DisconnectMessage.InvalidVersion~[version]={GameMain.Version.ToString()}~[clientversion]={version}");
GameServer.Log(name + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (incompatible game version)", ServerLog.MessageType.Error);
DebugConsole.NewMessage(name + " (" + inc.SenderConnection.RemoteEndPoint.Address.ToString() + ") couldn't join the server (incompatible game version)", Microsoft.Xna.Framework.Color.Red);
return;
}
int contentPackageCount = inc.ReadVariableInt32();
List <ClientContentPackage> clientContentPackages = new List <ClientContentPackage>();
for (int i = 0; i < contentPackageCount; i++)
{
string packageName = inc.ReadString();
string packageHash = inc.ReadString();
clientContentPackages.Add(new ClientContentPackage(packageName, packageHash));
}
//check if the client is missing any of our packages
List <ContentPackage> missingPackages = new List <ContentPackage>();
foreach (ContentPackage serverContentPackage in GameMain.SelectedPackages)
{
if (!serverContentPackage.HasMultiplayerIncompatibleContent)
{
continue;
}
bool packageFound = clientContentPackages.Any(cp => cp.Name == serverContentPackage.Name && cp.Hash == serverContentPackage.MD5hash.Hash);
if (!packageFound)
{
missingPackages.Add(serverContentPackage);
}
}
//check if the client is using packages we don't have
List <ClientContentPackage> redundantPackages = new List <ClientContentPackage>();
foreach (ClientContentPackage clientContentPackage in clientContentPackages)
{
bool packageFound = GameMain.SelectedPackages.Any(cp => cp.Name == clientContentPackage.Name && cp.MD5hash.Hash == clientContentPackage.Hash);
if (!packageFound)
{
redundantPackages.Add(clientContentPackage);
}
}
if (missingPackages.Count == 1)
{
RemovePendingClient(pendingClient, DisconnectReason.MissingContentPackage,
$"DisconnectMessage.MissingContentPackage~[missingcontentpackage]={GetPackageStr(missingPackages[0])}");
GameServer.Log(name + " (" + inc.SenderConnection.RemoteEndPoint.Address + ") couldn't join the server (missing content package " + GetPackageStr(missingPackages[0]) + ")", ServerLog.MessageType.Error);
return;
}
else if (missingPackages.Count > 1)
{
List <string> packageStrs = new List <string>();
missingPackages.ForEach(cp => packageStrs.Add(GetPackageStr(cp)));
RemovePendingClient(pendingClient, DisconnectReason.MissingContentPackage,
$"DisconnectMessage.MissingContentPackages~[missingcontentpackages]={string.Join(", ", packageStrs)}");
GameServer.Log(name + " (" + inc.SenderConnection.RemoteEndPoint.Address + ") couldn't join the server (missing content packages " + string.Join(", ", packageStrs) + ")", ServerLog.MessageType.Error);
return;
}
if (redundantPackages.Count == 1)
{
RemovePendingClient(pendingClient, DisconnectReason.IncompatibleContentPackage,
$"DisconnectMessage.IncompatibleContentPackage~[incompatiblecontentpackage]={GetPackageStr(redundantPackages[0])}");
GameServer.Log(name + " (" + inc.SenderConnection.RemoteEndPoint.Address + ") couldn't join the server (using an incompatible content package " + GetPackageStr(redundantPackages[0]) + ")", ServerLog.MessageType.Error);
return;
}
if (redundantPackages.Count > 1)
{
List <string> packageStrs = new List <string>();
redundantPackages.ForEach(cp => packageStrs.Add(GetPackageStr(cp)));
RemovePendingClient(pendingClient, DisconnectReason.IncompatibleContentPackage,
$"DisconnectMessage.IncompatibleContentPackages~[incompatiblecontentpackages]={string.Join(", ", packageStrs)}");
GameServer.Log(name + " (" + inc.SenderConnection.RemoteEndPoint.Address + ") couldn't join the server (using incompatible content packages " + string.Join(", ", packageStrs) + ")", ServerLog.MessageType.Error);
return;
}
if (pendingClient.SteamID == null)
{
bool requireSteamAuth = GameMain.Config.RequireSteamAuthentication;
#if DEBUG
requireSteamAuth = false;
#endif
//steam auth cannot be done (SteamManager not initialized or no ticket given),
//but it's not required either -> let the client join without auth
if ((!Steam.SteamManager.IsInitialized || (ticket?.Length ?? 0) == 0) &&
!requireSteamAuth)
{
pendingClient.Name = name;
pendingClient.OwnerKey = ownKey;
pendingClient.InitializationStep = serverSettings.HasPassword ? ConnectionInitialization.Password : ConnectionInitialization.ContentPackageOrder;
}
else
{
Steamworks.BeginAuthResult authSessionStartState = Steam.SteamManager.StartAuthSession(ticket, steamId);
if (authSessionStartState != Steamworks.BeginAuthResult.OK)
{
RemovePendingClient(pendingClient, DisconnectReason.SteamAuthenticationFailed, "Steam auth session failed to start: " + authSessionStartState.ToString());
return;
}
pendingClient.SteamID = steamId;
pendingClient.Name = name;
pendingClient.OwnerKey = ownKey;
pendingClient.AuthSessionStarted = true;
}
}
else //TODO: could remove since this seems impossible
{
if (pendingClient.SteamID != steamId)
{
RemovePendingClient(pendingClient, DisconnectReason.SteamAuthenticationFailed, "SteamID mismatch");
return;
}
}
break;
case ConnectionInitialization.Password:
int pwLength = inc.ReadByte();
byte[] incPassword = new byte[pwLength];
inc.ReadBytes(incPassword, 0, pwLength);
if (pendingClient.PasswordSalt == null)
{
DebugConsole.ThrowError("Received password message from client without salt");
return;
}
if (serverSettings.IsPasswordCorrect(incPassword, pendingClient.PasswordSalt.Value))
{
pendingClient.InitializationStep = ConnectionInitialization.ContentPackageOrder;
}
else
{
pendingClient.Retries++;
if (serverSettings.BanAfterWrongPassword && pendingClient.Retries > serverSettings.MaxPasswordRetriesBeforeBan)
{
string banMsg = "Failed to enter correct password too many times";
if (pendingClient.SteamID != null)
{
serverSettings.BanList.BanPlayer(pendingClient.Name, pendingClient.SteamID.Value, banMsg, null);
}
serverSettings.BanList.BanPlayer(pendingClient.Name, pendingClient.Connection.RemoteEndPoint.Address, banMsg, null);
RemovePendingClient(pendingClient, DisconnectReason.Banned, banMsg);
return;
}
}
pendingClient.UpdateTime = Timing.TotalTime;
break;
case ConnectionInitialization.ContentPackageOrder:
pendingClient.InitializationStep = ConnectionInitialization.Success;
pendingClient.UpdateTime = Timing.TotalTime;
break;
}
}
