Code
2023-12-28 10:00:02

如何确定.NET程序集是为x86还是x64构建的?

我有一个任意的。net程序集列表。

我需要以编程方式检查每个DLL是否为x86构建(而不是x64或任何CPU)。这可能吗?

当前回答

一个更通用的方法-使用文件结构来确定位和图像类型:

public static CompilationMode GetCompilationMode(this FileInfo info)
{
    if (!info.Exists)
        throw new ArgumentException($"{info.FullName} does not exist");

    var intPtr = IntPtr.Zero;
    try
    {
        uint unmanagedBufferSize = 4096;
        intPtr = Marshal.AllocHGlobal((int)unmanagedBufferSize);

        using (var stream = File.Open(info.FullName, FileMode.Open, FileAccess.Read))
        {
            var bytes = new byte[unmanagedBufferSize];
            stream.Read(bytes, 0, bytes.Length);
            Marshal.Copy(bytes, 0, intPtr, bytes.Length);
        }

        // Check DOS header magic number
        if (Marshal.ReadInt16(intPtr) != 0x5a4d)
            return CompilationMode.Invalid;

        // This will get the address for the WinNT header
        var ntHeaderAddressOffset = Marshal.ReadInt32(intPtr + 60);

        // Check WinNT header signature
        var signature = Marshal.ReadInt32(intPtr + ntHeaderAddressOffset);
        if (signature != 0x4550)
            return CompilationMode.Invalid;

        // Determine file bitness by reading magic from IMAGE_OPTIONAL_HEADER
        var magic = Marshal.ReadInt16(intPtr + ntHeaderAddressOffset + 24);

        var result = CompilationMode.Invalid;
        uint clrHeaderSize;
        if (magic == 0x10b)
        {
            clrHeaderSize = (uint)Marshal.ReadInt32(intPtr + ntHeaderAddressOffset + 24 + 208 + 4);
            result |= CompilationMode.Bit32;
        }
        else if (magic == 0x20b)
        {
            clrHeaderSize = (uint)Marshal.ReadInt32(intPtr + ntHeaderAddressOffset + 24 + 224 + 4);
            result |= CompilationMode.Bit64;
        }
        else return CompilationMode.Invalid;

        result |= clrHeaderSize != 0
            ? CompilationMode.CLR
            : CompilationMode.Native;

        return result;
    }
    finally
    {
        if (intPtr != IntPtr.Zero)
            Marshal.FreeHGlobal(intPtr);
    }
}

编译模式枚举

[Flags]
public enum CompilationMode
{
    Invalid = 0,
    Native = 0x1,
    CLR = Native << 1,
    Bit32 = CLR << 1,
    Bit64 = Bit32 << 1
}

源代码和解释在GitHub。

2018-03-27 15:08:19

其他回答

澄清一下，CorFlags.exe是. net Framework SDK的一部分。我的机器上有开发工具，对我来说，确定DLL是否仅为32位的最简单方法是:

打开Visual Studio命令提示符(Windows系统:菜单开始/程序/Microsoft Visual Studio/Visual Studio工具/Visual Studio 2008命令提示符) CD到包含有关DLL的目录 像这样运行corflags: corflags MyAssembly.dll

你会得到这样的输出:

Microsoft (R) .NET Framework CorFlags Conversion Tool.  Version  3.5.21022.8
Copyright (c) Microsoft Corporation.  All rights reserved.

Version   : v2.0.50727
CLR Header: 2.5
PE        : PE32
CorFlags  : 3
ILONLY    : 1
32BIT     : 1
Signed    : 0

根据评论，上述标志的解读如下:

任意CPU: PE = PE32, 32BIT = 0 x86: PE = PE32, 32BIT = 1 64位:PE = PE32+， 32BIT = 0

2009-06-16 17:11:02

一个工具是sigcheck:

sigcheck c:\Windows\winhlp32.exe

输出:

Sigcheck v2.71 - File version and signature viewer
Copyright (C) 2004-2018 Mark Russinovich
Sysinternals - www.sysinternals.com

c:\windows\winhlp32.exe:
        Verified:       Signed
        Signing date:   20:05 02.05.2022
        Publisher:      Microsoft Windows
        Company:        Microsoft Corporation
        Description:    Windows Winhlp32 Stub
        Product:        Microsoft® Windows® Operating System
        Prod version:   10.0.19041.1
        File version:   10.0.19041.1 (WinBuild.160101.0800)
        MachineType:    32-bit

sigcheck -nobanner c:\Windows\HelpPane.exe

输出:

c:\windows\HelpPane.exe:
        Verified:       Signed
        Signing date:   00:42 23.04.2022
        Publisher:      Microsoft Windows
        Company:        Microsoft Corporation
        Description:    Microsoft Help and Support
        Product:        Microsoft® Windows® Operating System
        Prod version:   10.0.19041.1151
        File version:   10.0.19041.1151 (WinBuild.160101.0800)
        MachineType:    64-bit
2016-10-04 12:12:36

查看System.Reflection.AssemblyName。assemblyFile GetAssemblyName(字符串)。

您可以从返回的AssemblyName实例中检查程序集元数据:

使用PowerShell:

[36] C:\> [reflection.assemblyname]::GetAssemblyName("${pwd}\Microsoft.GLEE.dll") | fl

Name                  : Microsoft.GLEE
Version               : 1.0.0.0
CultureInfo           :
CodeBase              : file:///C:/projects/powershell/BuildAnalyzer/...
EscapedCodeBase       : file:///C:/projects/powershell/BuildAnalyzer/...
ProcessorArchitecture : MSIL
Flags                 : PublicKey
HashAlgorithm         : SHA1
VersionCompatibility  : SameMachine
KeyPair               :
FullName              : Microsoft.GLEE, Version=1.0.0.0, Culture=neut...

在这里，ProcessorArchitecture标识目标平台。

Amd64:基于x64架构的64位处理器。 Arm: Arm处理器。 IA64:仅支持64位Intel Itanium处理器。 MSIL:对于处理器和每字比特数来说是中性的。 X86:一种32位的Intel处理器，本机的或在64位平台(WoW64)上的Windows on Windows环境中。 None:未知或未指定的处理器和每字位数的组合。

在本例中，我使用PowerShell来调用该方法。

2008-11-06 22:20:18

一个更通用的方法-使用文件结构来确定位和图像类型:

public static CompilationMode GetCompilationMode(this FileInfo info)
{
    if (!info.Exists)
        throw new ArgumentException($"{info.FullName} does not exist");

    var intPtr = IntPtr.Zero;
    try
    {
        uint unmanagedBufferSize = 4096;
        intPtr = Marshal.AllocHGlobal((int)unmanagedBufferSize);

        using (var stream = File.Open(info.FullName, FileMode.Open, FileAccess.Read))
        {
            var bytes = new byte[unmanagedBufferSize];
            stream.Read(bytes, 0, bytes.Length);
            Marshal.Copy(bytes, 0, intPtr, bytes.Length);
        }

        // Check DOS header magic number
        if (Marshal.ReadInt16(intPtr) != 0x5a4d)
            return CompilationMode.Invalid;

        // This will get the address for the WinNT header
        var ntHeaderAddressOffset = Marshal.ReadInt32(intPtr + 60);

        // Check WinNT header signature
        var signature = Marshal.ReadInt32(intPtr + ntHeaderAddressOffset);
        if (signature != 0x4550)
            return CompilationMode.Invalid;

        // Determine file bitness by reading magic from IMAGE_OPTIONAL_HEADER
        var magic = Marshal.ReadInt16(intPtr + ntHeaderAddressOffset + 24);

        var result = CompilationMode.Invalid;
        uint clrHeaderSize;
        if (magic == 0x10b)
        {
            clrHeaderSize = (uint)Marshal.ReadInt32(intPtr + ntHeaderAddressOffset + 24 + 208 + 4);
            result |= CompilationMode.Bit32;
        }
        else if (magic == 0x20b)
        {
            clrHeaderSize = (uint)Marshal.ReadInt32(intPtr + ntHeaderAddressOffset + 24 + 224 + 4);
            result |= CompilationMode.Bit64;
        }
        else return CompilationMode.Invalid;

        result |= clrHeaderSize != 0
            ? CompilationMode.CLR
            : CompilationMode.Native;

        return result;
    }
    finally
    {
        if (intPtr != IntPtr.Zero)
            Marshal.FreeHGlobal(intPtr);
    }
}

编译模式枚举

[Flags]
public enum CompilationMode
{
    Invalid = 0,
    Native = 0x1,
    CLR = Native << 1,
    Bit32 = CLR << 1,
    Bit64 = Bit32 << 1
}

源代码和解释在GitHub。

2018-03-27 15:08:19

JetBrains的DotPeek提供了一个快速简单的方法来查看msil(任何CPU)， x86和x64:

2017-08-22 07:20:43

推荐文章

aliyun

最新文章

标签

2024 code 京ICP备15047053号-1