Core/Realms: Fix not being able to return to realm list.

2021-01-21 14:59:11 -05:00
parent 43b298b830
commit 25e9382c6f
7 changed files with 147 additions and 266 deletions
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2012-2016 CypherCore <http://github.com/CypherCore>
+ * 
+ * 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 3 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/>.
+ */
+
+using Framework.Constants;
+using Game.Networking.Packets;
+using Google.Protobuf;
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Linq.Expressions;
+using System.Reflection;
+
+namespace Game.Services
+{
+    public class WorldServiceManager : Singleton<WorldServiceManager>
+    {
+        ConcurrentDictionary<(uint ServiceHash, uint MethodId), WorldServiceHandler> serviceHandlers;
+
+        WorldServiceManager()
+        {
+            serviceHandlers = new ConcurrentDictionary<(uint ServiceHash, uint MethodId), WorldServiceHandler>();
+
+            Assembly currentAsm = Assembly.GetExecutingAssembly();
+            foreach (var type in currentAsm.GetTypes())
+            {
+                foreach (var methodInfo in type.GetMethods(BindingFlags.Instance | BindingFlags.NonPublic))
+                {
+                    foreach (var serviceAttr in methodInfo.GetCustomAttributes<ServiceAttribute>())
+                    {
+                        if (serviceAttr == null)
+                            continue;
+
+                        var key = (serviceAttr.ServiceHash, serviceAttr.MethodId);
+                        if (serviceHandlers.ContainsKey(key))
+                        {
+                            Log.outError(LogFilter.Network, $"Tried to override ServiceHandler: {serviceHandlers[key]} with {methodInfo.Name} (ServiceHash: {serviceAttr.ServiceHash} MethodId: {serviceAttr.MethodId})");
+                            continue;
+                        }
+
+                        var parameters = methodInfo.GetParameters();
+                        if (parameters.Length == 0)
+                        {
+                            Log.outError(LogFilter.Network, $"Method: {methodInfo.Name} needs atleast one paramter");
+                            continue;
+                        }
+
+                        serviceHandlers[key] = new WorldServiceHandler(methodInfo, parameters);
+                    }
+                }
+            }
+        }
+
+        public WorldServiceHandler GetHandler(uint serviceHash, uint methodId)
+        {
+            return serviceHandlers.LookupByKey((serviceHash, methodId));
+        }
+    }
+
+    public class WorldServiceHandler
+    {
+        Delegate methodCaller;
+        Type requestType;
+        Type responseType;
+
+        public WorldServiceHandler(MethodInfo info, ParameterInfo[] parameters)
+        {
+            requestType = parameters[0].ParameterType;
+            if (parameters.Length > 1)
+                responseType = parameters[1].ParameterType;
+
+            if (responseType != null)
+                methodCaller = info.CreateDelegate(Expression.GetDelegateType(new[] { typeof(WorldSession), requestType, responseType, info.ReturnType }));
+            else
+                methodCaller = info.CreateDelegate(Expression.GetDelegateType(new[] { typeof(WorldSession), requestType, info.ReturnType }));
+        }
+
+        public void Invoke(WorldSession session, MethodCall methodCall, CodedInputStream stream)
+        {
+            var request = (IMessage)Activator.CreateInstance(requestType);
+            request.MergeFrom(stream);
+
+            BattlenetRpcErrorCode status;
+            if (responseType != null)
+            {
+                var response = (IMessage)Activator.CreateInstance(responseType);
+                status = (BattlenetRpcErrorCode)methodCaller.DynamicInvoke(session, request, response);
+                Log.outDebug(LogFilter.ServiceProtobuf, "{0} Client called server Method: {1}) Returned: {2} Status: {3}.", session.GetRemoteAddress(), request, response, status);
+                if (status == 0)
+                    session.SendBattlenetResponse(methodCall.GetServiceHash(), methodCall.GetMethodId(), methodCall.Token, response);
+                else
+                    session.SendBattlenetResponse(methodCall.GetServiceHash(), methodCall.GetMethodId(), methodCall.Token, status);
+            }
+            else
+            {
+                status = (BattlenetRpcErrorCode)methodCaller.DynamicInvoke(session, request);
+                Log.outDebug(LogFilter.ServiceProtobuf, "{0} Client called server Method: {1}) Status: {2}.", session.GetRemoteAddress(), request, status);
+                if (status != 0)
+                    session.SendBattlenetResponse(methodCall.GetServiceHash(), methodCall.GetMethodId(), methodCall.Token, status);
+            }
+        }
+    }
+
+    [AttributeUsage(AttributeTargets.Method)]
+    public sealed class ServiceAttribute : Attribute
+    {
+        public uint ServiceHash { get; set; }
+        public uint MethodId { get; set; }
+
+        public ServiceAttribute(OriginalHash serviceHash, uint methodId)
+        {
+            ServiceHash = (uint)serviceHash;
+            MethodId = methodId;
+        }
+    }
+}