Refactoring of BNetServer

2020-07-12 00:06:43 -04:00
parent 4164384b72
commit 581d077acd
318 changed files with 2046 additions and 4694 deletions
@@ -0,0 +1,195 @@
+// Copyright (c) CypherCore <http://github.com/CypherCore> All rights reserved.
+// Licensed under the GNU GENERAL PUBLIC LICENSE. See LICENSE file in the project root for full license information.
+
+using BNetServer.Networking;
+using Framework.Configuration;
+using Framework.Constants;
+using Framework.Web;
+using Google.Protobuf;
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Linq.Expressions;
+using System.Net;
+using System.Reflection;
+using System.Security.Cryptography.X509Certificates;
+
+namespace BNetServer
+{
+    public class LoginServiceManager : Singleton<LoginServiceManager>
+    {
+        ConcurrentDictionary<(uint ServiceHash, uint MethodId), BnetServiceHandler> serviceHandlers;
+        FormInputs formInputs;
+        IPEndPoint externalAddress;
+        IPEndPoint localAddress;
+        X509Certificate2 certificate;
+
+        LoginServiceManager() 
+        {
+            serviceHandlers = new ConcurrentDictionary<(uint ServiceHash, uint MethodId), BnetServiceHandler>();
+            formInputs = new FormInputs();
+        }
+
+        public void Initialize()
+        {
+            int port = ConfigMgr.GetDefaultValue("LoginREST.Port", 8081);
+            if (port < 0 || port > 0xFFFF)
+            {
+                Log.outError(LogFilter.Network, $"Specified login service port ({port}) out of allowed range (1-65535), defaulting to 8081");
+                port = 8081;
+            }
+
+            string configuredAddress = ConfigMgr.GetDefaultValue("LoginREST.ExternalAddress", "127.0.0.1");
+            IPAddress address;
+            if (!IPAddress.TryParse(configuredAddress, out address))
+            {
+                Log.outError(LogFilter.Network, $"Could not resolve LoginREST.ExternalAddress {configuredAddress}");
+                return;
+            }
+            externalAddress = new IPEndPoint(address, port);
+
+            configuredAddress = ConfigMgr.GetDefaultValue("LoginREST.LocalAddress", "127.0.0.1");
+            if (!IPAddress.TryParse(configuredAddress, out address))
+            {
+                Log.outError(LogFilter.Network, $"Could not resolve LoginREST.ExternalAddress {configuredAddress}");
+                return;
+            }
+
+            localAddress = new IPEndPoint(address, port);
+
+            // set up form inputs 
+            formInputs.Type = "LOGIN_FORM";
+
+            var input = new FormInput();
+            input.Id = "account_name";
+            input.Type = "text";
+            input.Label = "E-mail";
+            input.MaxLength = 320;
+            formInputs.Inputs.Add(input);
+
+            input = new FormInput();
+            input.Id = "password";
+            input.Type = "password";
+            input.Label = "Password";
+            input.MaxLength = 16;
+            formInputs.Inputs.Add(input);
+
+            input = new FormInput();
+            input.Id = "log_in_submit";
+            input.Type = "submit";
+            input.Label = "Log In";
+            formInputs.Inputs.Add(input);
+
+            certificate = new X509Certificate2("BNetServer.pfx");
+
+            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 BnetServiceHandler(methodInfo, parameters);
+                    }
+                }
+            }
+        }
+
+        public BnetServiceHandler GetHandler(uint serviceHash, uint methodId)
+        {
+            return serviceHandlers.LookupByKey((serviceHash, methodId));
+        }
+
+        public IPEndPoint GetAddressForClient(IPAddress address)
+        {
+            if (IPAddress.IsLoopback(address))
+                return localAddress;
+
+            return externalAddress;
+        }
+
+        public FormInputs GetFormInput()
+        {
+            return formInputs;
+        }
+
+        public X509Certificate2 GetCertificate()
+        {
+            return certificate;
+        }
+    }
+
+    public class BnetServiceHandler
+    {
+        Delegate methodCaller;
+        Type requestType;
+        Type responseType;
+
+        public BnetServiceHandler(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(Session), requestType, responseType, info.ReturnType }));
+            else
+                methodCaller = info.CreateDelegate(Expression.GetDelegateType(new[] { typeof(Session), requestType, info.ReturnType }));
+        }
+
+        public void Invoke(Session session, uint token, 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.GetClientInfo(), request, response, status);
+                if (status == 0)
+                    session.SendResponse(token, response);
+                else
+                    session.SendResponse(token, status);
+            }
+            else
+            {
+                status = (BattlenetRpcErrorCode)methodCaller.DynamicInvoke(session, request);
+                Log.outDebug(LogFilter.ServiceProtobuf, "{0} Client called server Method: {1}) Status: {2}.", session.GetClientInfo(), request, status);
+                if (status != 0)
+                    session.SendResponse(token, status);
+            }
+        }
+    }
+
+    [AttributeUsage(AttributeTargets.Method)]
+    public sealed class ServiceAttribute : System.Attribute
+    {
+        public uint ServiceHash { get; set; }
+        public uint MethodId { get; set; }
+
+        public ServiceAttribute(OriginalHash serviceHash, uint methodId)
+        {
+            ServiceHash = (uint)serviceHash;
+            MethodId = methodId;
+        }
+    }
+}