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Handle NMT Login packet

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This commit is contained in:
AeonLucid
2022-01-13 01:04:54 +01:00
parent 65a28b32ef
commit 7c6353c475
21 changed files with 722 additions and 57 deletions
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src/Prospect.Unreal/Runtime/UWorld.cs
+187 -1
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@@ -1,6 +1,8 @@
using Prospect.Unreal.Core;
using Prospect.Unreal.Core.Names;
using Prospect.Unreal.Exceptions;
using Prospect.Unreal.Net;
using Prospect.Unreal.Net.Actors;
using Prospect.Unreal.Net.Channels;
using Prospect.Unreal.Net.Packets.Bunch;
using Prospect.Unreal.Net.Packets.Control;
@@ -12,9 +14,14 @@ public abstract class UWorld : FNetworkNotify, IAsyncDisposable
{
private static readonly ILogger Logger = Log.ForContext<UWorld>();
private UGameInstance? _owningGameInstance;
private AGameModeBase? _authorityGameMode;
public UWorld(FUrl url)
{
Url = url;
_owningGameInstance = null;
_authorityGameMode = null;
}
public FUrl Url { get; }
@@ -28,6 +35,44 @@ public abstract class UWorld : FNetworkNotify, IAsyncDisposable
NetDriver.ConnectionlessHandler?.Tick(deltaTime);
}
}
public void SetGameInstance(UGameInstance instance)
{
_owningGameInstance = instance;
}
public UGameInstance GetGameInstance()
{
if (_owningGameInstance == null)
{
throw new UnrealException($"Attempted to retrieve null {nameof(UGameInstance)}");
}
return _owningGameInstance;
}
public bool SetGameMode(FUrl worldUrl)
{
if (IsServer() && _authorityGameMode == null)
{
_authorityGameMode = GetGameInstance().CreateGameModeForURL(worldUrl, this);
if (_authorityGameMode != null)
{
return true;
}
Logger.Error("Failed to spawn GameMode actor");
return false;
}
return false;
}
public AGameModeBase? GetAuthGameMode()
{
return _authorityGameMode;
}
public bool Listen()
{
@@ -114,8 +159,12 @@ public abstract class UWorld : FNetworkNotify, IAsyncDisposable
{
case NMT.Hello:
{
const int localNetworkVersion = 0;
if (NMT_Hello.Receive(bunch, out var isLittleEndian, out var remoteNetworkVersion, out var encryptionToken))
{
Logger.Information("Client connecting with version. LocalNetworkVersion: {Local}, RemoteNetworkVersion: {Remote}", localNetworkVersion, remoteNetworkVersion);
// TODO: Version check.
if (string.IsNullOrEmpty(encryptionToken))
@@ -130,9 +179,120 @@ public abstract class UWorld : FNetworkNotify, IAsyncDisposable
break;
}
case NMT.Netspeed:
{
if (NMT_Netspeed.Receive(bunch, out var rate))
{
connection.CurrentNetSpeed = Math.Clamp(rate, 1800, NetDriver.MaxClientRate);
Logger.Debug("Client netspeed is {Num}", connection.CurrentNetSpeed);
}
break;
}
case NMT.Abort:
{
break;
}
case NMT.Skip:
{
break;
}
case NMT.Login:
{
throw new NotImplementedException();
// Admit or deny the player here.
if (NMT_Login.Receive(bunch, out var clientResponse, out var requestUrl, out var uniqueIdRepl, out var onlinePlatformName))
{
connection.ClientResponse = clientResponse;
// Only the options/portal for the URL should be used during join
var newRequestUrl = requestUrl;
var oneIndex = requestUrl.IndexOf('?');
var twoIndex = requestUrl.IndexOf('#');
if (oneIndex != -1 && twoIndex != -1)
{
newRequestUrl = requestUrl.Substring(Math.Min(oneIndex, twoIndex));
}
else if (oneIndex != -1)
{
newRequestUrl = requestUrl.Substring(oneIndex);
}
else if (twoIndex != -1)
{
newRequestUrl = requestUrl.Substring(twoIndex);
}
else
{
newRequestUrl = string.Empty;
}
Logger.Debug("Login request: {RequestUrl} userId: {UserId} platform: {Platform}", newRequestUrl, uniqueIdRepl.ToDebugString(), onlinePlatformName);
// Compromise for passing splitscreen playercount through to gameplay login code,
// without adding a lot of extra unnecessary complexity throughout the login code.
// NOTE: This code differs from NMT_JoinSplit, by counting + 1 for SplitscreenCount
// (since this is the primary connection, not counted in Children)
// TODO: Implement proper FUrl constructor
var inUrl = new FUrl
{
Map = Url.Map + newRequestUrl
};
if (!inUrl.Valid)
{
requestUrl = newRequestUrl;
Logger.Error("NMT_Login: Invalid URL {Url}", requestUrl);
bunch.SetError();
break;
}
var splitscreenCount = Math.Min(connection.Children.Count + 1, 255);
// Don't allow clients to specify this value
inUrl.Options.Remove("SplitscreenCount");
inUrl.Options.Add($"SplitscreenCount={splitscreenCount}");
requestUrl = inUrl.ToString();
// skip to the first option in the URL
var tmp = requestUrl.Substring(requestUrl.IndexOf('?'));
// keep track of net id for player associated with remote connection
connection.PlayerId = uniqueIdRepl;
// keep track of the online platform the player associated with this connection is using.
connection.SetPlayerOnlinePlatformName(new FName(onlinePlatformName));
// ask the game code if this player can join
string errorMsg = null;
var gameMode = GetAuthGameMode();
if (gameMode != null)
{
gameMode.PreLogin(tmp, connection.LowLevelGetRemoteAddress(), connection.PlayerId, out errorMsg);
}
if (!string.IsNullOrEmpty(errorMsg))
{
Logger.Debug("PreLogin failure: {Error}", errorMsg);
NMT_Failure.Send(connection, errorMsg);
connection.FlushNet(true);
}
else
{
WelcomePlayer(connection);
}
}
else
{
connection.ClientResponse = string.Empty;
}
break;
}
default:
@@ -143,6 +303,32 @@ public abstract class UWorld : FNetworkNotify, IAsyncDisposable
}
}
private void WelcomePlayer(UNetConnection connection)
{
// TODO: Properly fetch level name from CurrentLevel
var levelName = "/Game/ThirdPersonCPP/Maps/ThirdPersonExampleMap";
// TODO: Properly fetch from AuthorityGameMode
var gameName = "/Script/ThirdPersonMP.ThirdPersonMPGameMode";
var redirectUrl = string.Empty;
NMT_Welcome.Send(connection, levelName, gameName, redirectUrl);
connection.FlushNet();
// connection.QueuedBits = 0;
connection.SetClientLoginState(EClientLoginState.Welcomed);
}
public bool IsServer()
{
if (NetDriver != null)
{
return NetDriver.IsServer();
}
return true;
}
public async ValueTask DisposeAsync()
{
if (NetDriver != null)