Connection data (#317)

Daybreak/Daybreak.csproj

@@ -13,7 +13,7 @@
     <LangVersion>preview</LangVersion>
     <ApplicationIcon>Daybreak.ico</ApplicationIcon>
     <IncludePackageReferencesDuringMarkupCompilation>true</IncludePackageReferencesDuringMarkupCompilation>
-    <Version>0.9.8.90</Version>
+    <Version>0.9.8.91</Version>
     <EnableWindowsTargeting>true</EnableWindowsTargeting>
     <UserSecretsId>cfb2a489-db80-448d-a969-80270f314c46</UserSecretsId>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>

Daybreak/Models/Guildwars/ConnectionData.cs

@@ -0,0 +1,8 @@
+using System.Net;
+
+namespace Daybreak.Models.Guildwars;
+
+public sealed class ConnectionData
+{
+    public IPAddress? IPAddress { get; init; }
+}

Daybreak/Models/Interop/IPAddressContext.cs

@@ -0,0 +1,12 @@
+using System.Runtime.InteropServices;
+
+namespace Daybreak.Models.Interop;
+
+[StructLayout(LayoutKind.Sequential)]
+public readonly struct IPAddressContext
+{
+    public readonly byte Byte1;
+    public readonly byte Byte2;
+    public readonly byte Byte3;
+    public readonly byte Byte4;
+}

Daybreak/Services/Scanner/GuildwarsMemoryCache.cs

@@ -22,6 +22,7 @@ public sealed class GuildwarsMemoryCache : IGuildwarsMemoryCache
     private readonly CachedData<SessionData?> sessionDataCache = new();
     private readonly CachedData<UserData?> userDataCache = new();
     private readonly CachedData<MainPlayerData?> mainPlayerDataCache = new();
+    private readonly CachedData<ConnectionData?> connectionDataCache = new();
 
     public GuildwarsMemoryCache(
         IGuildwarsMemoryReader guildwarsMemoryReader,
@@ -76,6 +77,11 @@ public GuildwarsMemoryCache(
         return this.ReadDataInternal(this.mainPlayerDataCache, this.guildwarsMemoryReader.ReadMainPlayerData, cancellationToken);
     }
 
+    public Task<ConnectionData?> ReadConnectionData(CancellationToken cancellationToken)
+    {
+        return this.ReadDataInternal(this.connectionDataCache, this.guildwarsMemoryReader.ReadConnectionData, cancellationToken);
+    }
+
     private async Task<T?> ReadDataInternal<T>(CachedData<T?> cachedData, Func<CancellationToken, Task<T?>> task, CancellationToken cancellationToken)
     {
         if (DateTime.Now - cachedData.SetTime <= TimeSpan.FromMilliseconds(this.liveOptions.Value.MemoryReaderFrequency))

Daybreak/Services/Scanner/GuildwarsMemoryReader.cs

@@ -15,6 +15,7 @@
 using System.Globalization;
 using System.Linq;
 using System.Logging;
+using System.Net;
 using System.Text;
 using System.Text.RegularExpressions;
 using System.Threading;
@@ -176,6 +177,16 @@ public void Stop()
         return Task.Run(() => this.SafeReadGameMemory(this.ReadMainPlayerDataInternal), cancellationToken);
     }
 
+    public Task<ConnectionData?> ReadConnectionData(CancellationToken cancellationToken)
+    {
+        if (this.memoryScanner.Scanning is false)
+        {
+            return Task.FromResult<ConnectionData?>(default);
+        }
+
+        return Task.Run(() => this.SafeReadGameMemory(this.ReadConnectionData), cancellationToken);
+    }
+
     private async Task InitializeSafe(Process process, ScopedLogger<GuildwarsMemoryReader> scopedLogger)
     {
         if (this.memoryScanner.Process is null ||
@@ -608,6 +619,23 @@ private async Task ResilientBeginScanner(ScopedLogger<GuildwarsMemoryReader> sco
         };
     }
 
+    private ConnectionData? ReadConnectionData()
+    {
+        /*
+         * IP Address in long format is at one of the following addresses:
+         * startAddress + 00629204 -> +0x18 -> +0x44 -> +0x1A4
+         */
+
+        var ipAddressContext = this.memoryScanner.ReadPtrChain<IPAddressContext>(this.memoryScanner.ModuleStartAddress, finalPointerOffset: 0x1A4, 0x00629204, 0x18, 0x44);
+
+        if (!IPAddress.TryParse($"{ipAddressContext.Byte1}.{ipAddressContext.Byte2}.{ipAddressContext.Byte3}.{ipAddressContext.Byte4}", out var ipAddress))
+        {
+            return default;
+        }
+
+        return new ConnectionData { IPAddress = ipAddress };
+    }
+
     private uint GetPlayerIdPointer()
     {
         if (this.playerIdPointer == 0)

Daybreak/Services/Scanner/IGuildwarsMemoryCache.cs

@@ -15,4 +15,5 @@ public interface IGuildwarsMemoryCache
     Task<SessionData?> ReadSessionData(CancellationToken cancellationToken);
     Task<UserData?> ReadUserData(CancellationToken cancellationToken);
     Task<MainPlayerData?> ReadMainPlayerData(CancellationToken cancellationToken);
+    Task<ConnectionData?> ReadConnectionData(CancellationToken cancellationToken);
 }

Daybreak/Services/Scanner/IGuildwarsMemoryReader.cs

@@ -16,5 +16,6 @@ public interface IGuildwarsMemoryReader
     Task<UserData?> ReadUserData(CancellationToken cancellationToken);
     Task<SessionData?> ReadSessionData(CancellationToken cancellationToken);
     Task<MainPlayerData?> ReadMainPlayerData(CancellationToken cancellationToken);
+    Task<ConnectionData?> ReadConnectionData(CancellationToken cancellationToken);
     void Stop();
 }