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MemoryPipePluginExt.cs
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using System;
using System.Collections.Generic;
using System.Diagnostics.Contracts;
using System.Drawing;
using System.IO;
using System.IO.Pipes;
using System.Linq;
using System.Runtime.InteropServices;
using ReClassNET.Plugins;
using RGiesecke.DllExport;
using static ReClassNET.Memory.NativeHelper;
namespace MemoryPipePlugin
{
public class MemoryPipePluginExt : Plugin
{
private const string PipePrefix = @"\\.\pipe\";
private static object sync = new object();
private static IPluginHost host;
private static Dictionary<IntPtr, MessageClient> openPipes;
public override Image Icon => Properties.Resources.logo;
public override bool Initialize(IPluginHost host)
{
Contract.Requires(host != null);
//System.Diagnostics.Debugger.Launch();
if (MemoryPipePluginExt.host != null)
{
Terminate();
}
if (host == null)
{
throw new ArgumentNullException(nameof(host));
}
MemoryPipePluginExt.host = host;
openPipes = new Dictionary<IntPtr, MessageClient>();
return true;
}
public override void Terminate()
{
foreach (var kv in openPipes)
{
kv.Value.Pipe.Dispose();
}
openPipes.Clear();
host = null;
}
/// <summary>Gets a <see cref="MessageClient"/> by its plugin internal identifier.</summary>
/// <param name="id">The identifier.</param>
/// <returns>The client or null if the identifier doesn't exist.</returns>
private static MessageClient GetClientById(IntPtr id)
{
MessageClient client;
openPipes.TryGetValue(id, out client);
return client;
}
/// <summary>Logs the exception and removes client.</summary>
/// <param name="id">The identifier.</param>
/// <param name="ex">The exception.</param>
private static void LogErrorAndRemoveClient(IntPtr id, Exception ex)
{
Contract.Requires(ex != null);
GetClientById(id)?.Pipe?.Dispose();
openPipes.Remove(id);
host.Logger.Log(ex);
}
/// <summary>Enumerates all pipes created by the ReClass.NET PipeServer.</summary>
/// <returns>An enumerator to all pipes.</returns>
private static IEnumerable<string> GetPipes()
{
return Directory.GetFiles(PipePrefix).Where(p => p.Contains("ReClass.NET"));
}
/// <summary>Queries if the process is valid. If the pipe isn't broken we can assume the process is valid.</summary>
/// <remarks><![CDATA[
/// Protocoll:
/// -> IsValidMessage
/// <- StatusMessage
/// ]]></remarks>
/// <param name="process">The process to check.</param>
/// <returns>True if the process is valid, false if not.</returns>
[DllExport(CallingConvention = CallingConvention.StdCall)]
public static bool IsProcessValid(IntPtr process)
{
lock (sync)
{
MessageClient client;
if (openPipes.TryGetValue(process, out client))
{
try
{
client.Send(new IsValidMessage());
var message = client.Receive() as StatusMessage;
return message.Success;
}
catch (Exception ex)
{
LogErrorAndRemoveClient(process, ex);
}
}
return false;
}
}
/// <summary>Opens the pipe to the target process.</summary>
/// <remarks><![CDATA[
/// Protocoll:
/// -> OpenProcessMessage
/// <- StatusMessage
/// ]]></remarks>
/// <param name="pid">The process id.</param>
/// <param name="desiredAccess">The desired access. (ignored)</param>
/// <returns>A plugin internal handle to the process.</returns>
[DllExport(CallingConvention = CallingConvention.StdCall)]
private static IntPtr OpenRemoteProcess(int pid, int desiredAccess)
{
lock (sync)
{
try
{
var pipePath = GetPipes().Where(p => p.GetHashCode() == pid).FirstOrDefault();
if (pipePath == null)
{
return IntPtr.Zero;
}
var pipeName = pipePath.Substring(PipePrefix.Length);
var pipe = new NamedPipeClientStream(".", pipeName, PipeDirection.InOut);
pipe.Connect();
pipe.ReadMode = PipeTransmissionMode.Message;
var client = new MessageClient(pipe);
client.RegisteredMessages.Add(StatusMessage.StaticType, () => new StatusMessage());
client.RegisteredMessages.Add(OpenProcessMessage.StaticType, () => new OpenProcessMessage());
client.RegisteredMessages.Add(CloseProcessMessage.StaticType, () => new CloseProcessMessage());
client.RegisteredMessages.Add(IsValidMessage.StaticType, () => new IsValidMessage());
client.RegisteredMessages.Add(ReadMemoryMessage.StaticType, () => new ReadMemoryMessage());
client.RegisteredMessages.Add(ReadMemoryDataMessage.StaticType, () => new ReadMemoryDataMessage());
client.RegisteredMessages.Add(WriteMemoryMessage.StaticType, () => new WriteMemoryMessage());
client.RegisteredMessages.Add(EnumerateRemoteSectionsAndModulesMessage.StaticType, () => new EnumerateRemoteSectionsAndModulesMessage());
client.RegisteredMessages.Add(EnumerateRemoteSectionCallbackMessage.StaticType, () => new EnumerateRemoteSectionCallbackMessage());
client.RegisteredMessages.Add(EnumerateRemoteModuleCallbackMessage.StaticType, () => new EnumerateRemoteModuleCallbackMessage());
var handle = pipe.SafePipeHandle.DangerousGetHandle();
openPipes.Add(handle, client);
try
{
client.Send(new OpenProcessMessage());
client.Receive(); // swallow the StatusMessage
return handle;
}
catch (Exception ex)
{
LogErrorAndRemoveClient(handle, ex);
}
}
catch (Exception ex)
{
host.Logger.Log(ex);
}
}
return IntPtr.Zero;
}
/// <summary>Closes the pipe to the remote process.</summary>
/// <remarks><![CDATA[
/// Protocoll:
/// -> CloseProcessMessage
/// <- StatusMessage
/// ]]></remarks>
/// <param name="process">The process to close.</param>
[DllExport(CallingConvention = CallingConvention.StdCall)]
private static void CloseRemoteProcess(IntPtr process)
{
lock (sync)
{
MessageClient client;
if (openPipes.TryGetValue(process, out client))
{
openPipes.Remove(process);
try
{
client.Send(new CloseProcessMessage());
client.Receive(); // swallow the StatusMessage
}
catch
{
}
client.Pipe.Dispose();
}
}
}
/// <summary>Reads memory of the remote process through the pipe.</summary>
/// <remarks><![CDATA[
/// Protocoll:
/// -> ReadMemoryMessage
/// <- StatusMessage, if an error occured
/// <- ReadMemoryDataMessage, if no error occured
/// ]]></remarks>
/// <param name="process">The process to read from.</param>
/// <param name="address">The address to read from.</param>
/// <param name="buffer">The buffer to read into.</param>
/// <param name="size">The size of the memory to read.</param>
/// <returns>True if it succeeds, false if it fails.</returns>
[DllExport(CallingConvention = CallingConvention.StdCall)]
private static bool ReadRemoteMemory(IntPtr process, IntPtr address, IntPtr buffer, int size)
{
lock (sync)
{
var client = GetClientById(process);
if (client != null)
{
try
{
client.Send(new ReadMemoryMessage(address, size));
var response = client.Receive();
var statusMessage = response as StatusMessage;
if (statusMessage != null)
{
return statusMessage.Success;
}
var memoryResponse = response as ReadMemoryDataMessage;
if (memoryResponse != null)
{
if (memoryResponse.Data.Length == size)
{
Marshal.Copy(memoryResponse.Data, 0, buffer, size);
return true;
}
}
}
catch (Exception ex)
{
LogErrorAndRemoveClient(process, ex);
}
}
return false;
}
}
/// <summary>Writes memory to the remote process.</summary>
/// <remarks><![CDATA[
/// Protocoll:
/// -> WriteMemoryMessage
/// <- StatusMessage
/// ]]></remarks>
/// <param name="process">The process to write to.</param>
/// <param name="address">The address to write to.</param>
/// <param name="buffer">The memory to write.</param>
/// <param name="size">The size of the memory to write.</param>
/// <returns>True if it succeeds, false if it fails.</returns>
[DllExport(CallingConvention = CallingConvention.StdCall)]
private static bool WriteRemoteMemory(IntPtr process, IntPtr address, IntPtr buffer, int size)
{
lock (sync)
{
var client = GetClientById(process);
if (client != null)
{
try
{
var data = new byte[size];
Marshal.Copy(buffer, data, 0, size);
client.Send(new WriteMemoryMessage(address, data));
var message = client.Receive() as StatusMessage;
return message.Success;
}
catch (Exception ex)
{
LogErrorAndRemoveClient(process, ex);
}
}
return false;
}
}
/// <summary>Enumerates all pipes started by the ReClass.NET PipeServer.</summary>
/// <param name="callbackProcess">The callback which gets called for every process.</param>
[DllExport(CallingConvention = CallingConvention.StdCall)]
private static void EnumerateProcesses(EnumerateProcessCallback callbackProcess)
{
if (callbackProcess == null)
{
return;
}
foreach (var pipe in GetPipes())
{
var platform = new DirectoryInfo(pipe).Parent?.Name ?? string.Empty;
#if WIN64
if (platform.ToLower() == "x64")
#else
if (platform.ToLower() == "x86")
#endif
{
callbackProcess(pipe.GetHashCode(), pipe);
}
}
}
/// <summary>Enumerate all sections and modules of the remote process.</summary>
/// <remarks><![CDATA[
/// Protocoll:
/// -> EnumerateRemoteSectionsAndModulesMessage
/// <- EnumerateRemoteSectionCallbackMessage [*]
/// <- EnumerateRemoteModuleCallbackMessage [*]
/// <- StatusMessage
///
/// Both callback messages can arrive in random order and count. The enumeration is finished if the StatusMessage was received.
/// ]]></remarks>
/// <param name="process">The process.</param>
/// <param name="callbackSection">The callback which gets called for every section.</param>
/// <param name="callbackModule">The callback which gets called for every module.</param>
[DllExport(CallingConvention = CallingConvention.StdCall)]
private static void EnumerateRemoteSectionsAndModules(IntPtr process, EnumerateRemoteSectionCallback callbackSection, EnumerateRemoteModuleCallback callbackModule)
{
if (callbackSection == null && callbackModule == null)
{
return;
}
lock (sync)
{
var client = GetClientById(process);
if (client != null)
{
try
{
client.Send(new EnumerateRemoteSectionsAndModulesMessage());
while (true)
{
var message = client.Receive();
if (message is StatusMessage)
{
break;
}
var callbackSectionMessage = message as EnumerateRemoteSectionCallbackMessage;
if (callbackSectionMessage != null)
{
callbackSection?.Invoke(
callbackSectionMessage.BaseAddress,
callbackSectionMessage.RegionSize,
callbackSectionMessage.Name,
callbackSectionMessage.State,
callbackSectionMessage.Protection,
callbackSectionMessage.SectionType,
callbackSectionMessage.ModulePath
);
}
var callbackModuleMessage = message as EnumerateRemoteModuleCallbackMessage;
if (callbackModuleMessage != null)
{
callbackModule?.Invoke(
callbackModuleMessage.BaseAddress,
callbackModuleMessage.RegionSize,
callbackModuleMessage.ModulePath
);
}
}
}
catch (Exception ex)
{
LogErrorAndRemoveClient(process, ex);
}
}
}
}
}
}