本文告诉大家如何在 dotnet 获取指定的进程的命令行参数
很多的程序在启动的时候都需要传入参数，那么如何拿到这些程序传入的参数？
我找到两个方法，一个需要引用 C++ 库支持 x86 和 x64 程序，另一个都是C#代码，但是只支持 x86 程序
本文提供一个由 StackOverflow 大神开发的库拿到进程的命令行
在使用下面的代码需要引用两个 C++ 的库，可以从 csdn 下载
使用下面的代码就可以拿到传入进程的参数，在使用之前，需要在输出的文件夹里面包含 ProcCmdLine32.dll 和 ProcCmdLine64.dll 可以从csdn 下载
public static string GetCommandLineOfProcess(Process process)
{
// max size of a command line is USHORT/sizeof(WCHAR), so we are going
// just allocate max USHORT for sanity sake.
var stringBuilder = new StringBuilder(0xFFFF);
if (Environment.Is64BitProcess)
{
GetProcCmdLine64((uint) process.Id, stringBuilder, (uint) stringBuilder.Capacity);
}
else
{
GetProcCmdLine32((uint) process.Id, stringBuilder, (uint) stringBuilder.Capacity);
}
return stringBuilder.ToString();
}
[DllImport("ProcCmdLine32.dll", CharSet = CharSet.Unicode, EntryPoint = "GetProcCmdLine")]
private static extern bool GetProcCmdLine32(uint nProcId, StringBuilder stringBuilder, uint dwSizeBuf);
[DllImport("ProcCmdLine64.dll", CharSet = CharSet.Unicode, EntryPoint = "GetProcCmdLine")]
private static extern bool GetProcCmdLine64(uint nProcId, StringBuilder stringBuilder, uint dwSizeBuf);
获取所有的进程的命令行可以使用这个代码
foreach (var process in Process.GetProcesses())
{
Console.WriteLine($"{process.ProcessName} {GetCommandLineOfProcess(process)}");
}
上面的代码需要引用一个 C++ 的库，看起来不清真，下面通过全部 C# 的代码
public static string GetCommandLineOfProcess(int processId)
{
var pid = processId;
var pbi = new NativeMethods.PROCESS_BASIC_INFORMATION();
IntPtr proc = NativeMethods.OpenProcess
(
PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, false, pid
);
if (proc == IntPtr.Zero)
{
return "";
}
if (NativeMethods.NtQueryInformationProcess(proc, 0, ref pbi, pbi.Size, IntPtr.Zero) == 0)
{
var buff = new byte[IntPtr.Size];
if (NativeMethods.ReadProcessMemory
(
proc,
(IntPtr) (pbi.PebBaseAddress.ToInt32() + 0x10),
buff,
IntPtr.Size, out _
))
{
var buffPtr = BitConverter.ToInt32(buff, 0);
var commandLine = new byte[Marshal.SizeOf(typeof(NativeMethods.UNICODE_STRING))];
if
(
NativeMethods.ReadProcessMemory
(
proc, (IntPtr) (buffPtr + 0x40),
commandLine,
Marshal.SizeOf(typeof(NativeMethods.UNICODE_STRING)), out _
)
)
{
var ucsData = ByteArrayToStructure<NativeMethods.UNICODE_STRING>(commandLine);
var parms = new byte[ucsData.Length];
if
(
NativeMethods.ReadProcessMemory
(
proc, ucsData.buffer, parms,
ucsData.Length, out _
)
)
{
return Encoding.Unicode.GetString(parms);
}
}
}
}
NativeMethods.CloseHandle(proc);
return "";
}
private const uint PROCESS_QUERY_INFORMATION = 0x400;
private const uint PROCESS_VM_READ = 0x010;
private static T ByteArrayToStructure<T>(byte[] bytes) where T : struct
{
var handle = GCHandle.Alloc(bytes, GCHandleType.Pinned);
var stuff = (T) Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(T));
handle.Free();
return stuff;
}
private static class NativeMethods
{
[DllImport("kernel32.dll", SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
internal static extern bool CloseHandle(IntPtr hObject);
[DllImport("kernel32.dll", SetLastError = true)]
internal static extern IntPtr OpenProcess
(
uint dwDesiredAccess,
[MarshalAs(UnmanagedType.Bool)] bool bInheritHandle,
int dwProcessId
);
[DllImport("kernel32.dll", SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
internal static extern bool ReadProcessMemory
(
IntPtr hProcess,
IntPtr lpBaseAddress,
byte[] lpBuffer,
int nSize,
out IntPtr lpNumberOfBytesRead
);
[DllImport("ntdll.dll")]
internal static extern int NtQueryInformationProcess
(
IntPtr ProcessHandle,
uint ProcessInformationClass,
ref PROCESS_BASIC_INFORMATION ProcessInformation,
uint ProcessInformationLength,
IntPtr ReturnLength
);
[StructLayout(LayoutKind.Sequential, Pack = 1)]
internal struct PROCESS_BASIC_INFORMATION
{
internal int ExitProcess;
internal IntPtr PebBaseAddress;
internal IntPtr AffinityMask;
internal int BasePriority;
internal IntPtr UniqueProcessId;
internal IntPtr InheritedFromUniqueProcessId;
internal uint Size => (uint) Marshal.SizeOf(typeof(PROCESS_BASIC_INFORMATION));
}
[StructLayout(LayoutKind.Sequential, Pack = 1)]
internal struct UNICODE_STRING
{
internal ushort Length;
internal ushort MaximumLength;
internal IntPtr buffer;
}
}
获取所有进程的参数
[STAThread]
private static void Main(string[] args)
{
if (Environment.Is64BitProcess)
{
throw new InvalidOperationException("暂时只支持x86程序");
}
foreach (var process in Process.GetProcesses())
{
Console.WriteLine($"{process.ProcessName} {GetCommandLineOfProcess(process.Id)}");
}
}
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