使用外部exe解决32位下无法获取64位进程路径的问题

Author: imba-tjd

MisakaTranslator-WPF/MainWindow.xaml.cs

@@ -207,21 +207,9 @@ private void Back_MouseLeftButtonDown(object sender, System.Windows.Input.MouseB
         private async Task StartTranslateByGid(int gid) {
             var pidList = new List<Process>();
 
-            foreach (var p in Process.GetProcesses())
-            {
-                try
-                {
-                    if (p.MainModule.FileName == gameInfoList[gid].FilePath)
-                        pidList.Add(p);
-                    else
-                        p.Dispose();
-                }
-                catch (System.ComponentModel.Win32Exception)
-                {
-                    //这个地方直接跳过，是因为32位程序确实会读到64位的系统进程，而系统进程是不能被访问的
-                    p.Dispose();
-                }
-            }
+            foreach (var (pid, path) in ProcessHelper.GetProcessesData(gameInfoList[gid].Isx64))
+                if (path == gameInfoList[gid].FilePath)
+                    pidList.Add(Process.GetProcessById(pid));
 
             if (pidList.Count == 0) {
                 HandyControl.Controls.MessageBox.Show(Application.Current.Resources["MainWindow_StartError_Hint"].ToString(), Application.Current.Resources["MessageBox_Hint"].ToString());
@@ -393,24 +381,11 @@ private int GetGameListHasProcessGame_PID_ID() {
             if (gameInfoList == null)
                 return -1;
 
-            foreach (var process in Process.GetProcesses()) {
+            foreach (var (_, path) in ProcessHelper.GetProcessesData(true))
                 for (int j = 0; j < gameInfoList.Count; j++) {
-                    try
-                    {
-                        if (process.MainModule.FileName == gameInfoList[j].FilePath)
-                            return j;
-                    }
-                    catch (Win32Exception)
-                    {
-                        continue;
-                    }
-                    catch (InvalidOperationException)
-                    {
-                        continue;
-                    }
+                    if (path == gameInfoList[j].FilePath)
+                        return j;
                 }
-                process.Dispose();
-            }
 
             return -1;
         }

TextHookLibrary/ProcessHelper.cs

@@ -7,17 +7,18 @@
 
 namespace TextHookLibrary
 {
-    public class ProcessHelper
+    public static class ProcessHelper
     {
+        const string ExtPath = "lib\\ProcessHelperExt.exe";
 
         /// <summary>
         /// 获得当前系统进程列表 形式：直接用于显示的字串和进程PID
         /// </summary>
         /// <returns></returns>
-        public static Dictionary<string,int> GetProcessList_Name_PID()
+        public static Dictionary<string, int> GetProcessList_Name_PID()
         {
             Dictionary<string, int> ret = new Dictionary<string, int>();
-            
+
             //获取系统进程列表
             foreach (Process p in Process.GetProcesses())
             {
@@ -42,11 +43,8 @@ public static List<Process> FindSameNameProcess(int pid)
             string DesProcessName = Process.GetProcessById(pid).ProcessName;
 
             List<Process> res = new List<Process>();
-            foreach (Process p in Process.GetProcesses())
-                if (p.ProcessName == DesProcessName)
-                    res.Add(p);
-                else
-                    p.Dispose();
+            foreach (Process p in Process.GetProcessesByName(DesProcessName))
+                res.Add(p);
             return res;
         }
 
@@ -62,11 +60,60 @@ public static string FindProcessPath(int pid)
                 Process p = Process.GetProcessById(pid);
                 return p.MainModule.FileName;
             }
-            catch (System.ComponentModel.Win32Exception)
+            catch (System.ComponentModel.Win32Exception e)
             {
-                return "";
+                if (e.NativeErrorCode != 299 || !System.IO.File.Exists(ExtPath))
+                    return "";
+
+                // Win32Exception:“A 32 bit processes cannot access modules of a 64 bit process.”
+                // 通过调用外部64位程序，使主程序在32位下获取其它64位程序的路径。外部程序不存在或不是此错误时保持原有逻辑返回""
+                var p = Process.Start(new ProcessStartInfo(ExtPath, pid.ToString())
+                {
+                    UseShellExecute = false,
+                    RedirectStandardOutput = true,
+                    CreateNoWindow = true
+                });
+                string path = p.StandardOutput.ReadToEnd().TrimEnd();
+                if (p.ExitCode == 3) // 不存在此pid对应的进程
+                    return "";
+                else if (p.ExitCode != 0)
+                    throw new InvalidOperationException("Failed to execute ProcessHelper.exe");
+                return path;
             }
         }
 
+        /// <summary>
+        /// 返回 pid,绝对路径 的列表
+        /// </summary>
+        public static List<(int, string)> GetProcessesData(bool isx64game = false)
+        {
+            var l = new List<(int, string)>();
+            // 在32位主程序、64位游戏（或想获取全部进程）、存在外部程序时调用
+            if (isx64game && !Environment.Is64BitProcess && System.IO.File.Exists(ExtPath))
+            {
+                var p = Process.Start(new ProcessStartInfo(ExtPath)
+                {
+                    UseShellExecute = false,
+                    RedirectStandardOutput = true,
+                    CreateNoWindow = true
+                });
+                string output = p.StandardOutput.ReadToEnd();
+                if (p.ExitCode != 0)
+                    throw new InvalidOperationException("Failed to execute ProcessHelperExt.exe");
+
+                string[] lines = output.Split(new[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries);
+                foreach (string line in lines)
+                {
+                    var parts = line.Split('|');
+                    l.Add((int.Parse(parts[0]), parts[1]));
+                }
+            }
+            else
+                foreach (var p in Process.GetProcesses())
+                    using (p)
+                        try { l.Add((p.Id, p.MainModule.FileName)); }
+                        catch (System.ComponentModel.Win32Exception) { }
+            return l;
+        }
     }
 }

Tools/ProcessHelperExt.cs

@@ -0,0 +1,26 @@
+// 无参使用时输出所有进程的 pid|绝对路径，有参使用时输出指定pid进程的路径
+// 编译：csc ProcessHelperExt.cs /o /platform:x64
+using System;
+using System.Diagnostics;
+
+if (args.Length > 1)
+    return 1;
+
+try
+{
+    if (args.Length == 1)
+    {
+        int pid = int.Parse(args[0]);
+        Process p;
+        try { p = Process.GetProcessById(pid); }
+        catch (System.ArgumentException) { return 3; } // 不存在pid对应的进程
+        Console.WriteLine(p.MainModule.FileName);
+    }
+    else
+        foreach (var p in Process.GetProcesses())
+            try { Console.WriteLine("{0}|{1}", p.Id, p.MainModule.FileName); }
+            catch (System.ComponentModel.Win32Exception) { } // 跳过权限不够的进程
+
+    return 0;
+}
+catch { return 2; }