挂钩recv和不可读的缓冲区

发布于 2024-10-09 03:50:35 字数 1381 浏览 5 评论 0原文

我有一个显示 WebBrowser 组件的应用程序，其中包含一个使用服务器创建 XMLSocket 的 Flash 应用程序。我现在正在尝试挂钩recv（幸运的是LocalHook）以进行日志用途，但是当我尝试读取套接字内容时，我只得到奇怪的字符，但是如果我使用SpyStudio设置挂钩，我会得到可读的字符串。这是我使用的代码：

我设置了钩子

CreateRecvHook = LocalHook.Create(
    LocalHook.GetProcAddress("ws2_32.dll", "recv"),
    新的 Drecv(recv_Hooked),
    这）;


CreateRecvHook.ThreadACL.SetExclusiveACL(new Int32[] { 0 });

我设置了我需要的一切
<前><代码>[DllImport("ws2_32.dll")] 静态外部 int 接收（ IntPtr套接字句柄， IntPtr buf，整数计数， int 套接字标志）； [UnmanagedFunctionPointer(CallingConvention.StdCall, 字符集 = 字符集.Unicode, 设置最后一个错误= true）] 委托 int Drecv( IntPtr套接字句柄， IntPtr buf，整数计数， int 套接字标志）；静态 int recv_Hooked( IntPtr套接字句柄， IntPtr buf，整数计数， int套接字标志） { 字节[]测试=新字节[计数]； Marshal.Copy(buf, 测试, 0, 计数);
```
IntPtr ptr = IntPtr.Zero;


ptr = Marshal.AllocHGlobal(count);
Marshal.Copy(测试, 0, ptr, 计数);


字符串 s = System.Text.UnicodeEncoding.Unicode.GetString(test);
调试.WriteLine(s);
System.IO.StreamWriter 文件 = new System.IO.StreamWriter("log.txt");
文件.WriteLine(s);


文件.关闭();
返回recv(socketHandle, buf, count, socketFlags);;
```
}

我已经尝试使用不同的编码但没有成功。顺便说一句，WebBrowser 似乎没有任何问题。

原文

I have an application that shows a WebBrowser component, which contains a flash application that create a XMLSocket with a server.
I'm now trying to hook recv ( luckly a LocalHook) for log purpuse, but when I try to read the socket content I get only strange chars, but if i set the hook with SpyStudio I get readable strings.
Here is the code I use :

I set the hook with

CreateRecvHook = LocalHook.Create(
    LocalHook.GetProcAddress("ws2_32.dll", "recv"),
    new Drecv(recv_Hooked),
    this);


CreateRecvHook.ThreadACL.SetExclusiveACL(new Int32[] { 0 });

I set up everything I need with

[DllImport("ws2_32.dll")]
static extern int recv(
            IntPtr socketHandle,
            IntPtr buf,
            int count,
            int socketFlags
    );


[UnmanagedFunctionPointer(CallingConvention.StdCall,
    CharSet = CharSet.Unicode,
    SetLastError = true)]


delegate int Drecv(
            IntPtr socketHandle,
            IntPtr buf,
            int count,
            int socketFlags
    );


static int recv_Hooked(
            IntPtr socketHandle,
            IntPtr buf,
            int count,
            int socketFlags)
{
    byte[] test = new byte[count];
    Marshal.Copy(buf, test, 0, count);


IntPtr ptr = IntPtr.Zero;


ptr = Marshal.AllocHGlobal(count);
Marshal.Copy(test, 0, ptr, count);


string s = System.Text.UnicodeEncoding.Unicode.GetString(test);
Debug.WriteLine(s);
System.IO.StreamWriter file = new System.IO.StreamWriter("log.txt");
file.WriteLine(s);


file.Close();
return recv(socketHandle, buf, count, socketFlags);;

}

I've already tried using different Encoding without success. As a side note, the WebBrowser doesn't seems to have any problem.

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