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Cleaned and added Process.StartEx extension method to allow for passing CreateProcess flags.

pull/83/head
David Hall 2019-10-17 11:27:59 -06:00
parent f649adbc24
commit 6e98c0539f
1 changed files with 244 additions and 38 deletions
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282
System/Extensions/ProcessExtension.cs
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@ -1,45 +1,66 @@
using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
#if (NET20 || NET35 || NET40 || NET45)
using System.Management;
#endif
using System.Runtime.InteropServices;
using System.Text;
using Vanara.Extensions.Reflection;
using Vanara.InteropServices;
using Vanara.IO;
using Vanara.PInvoke;
using Vanara.Security;
using Vanara.Security.AccessControl;
using static Vanara.PInvoke.AdvApi32;
using static Vanara.PInvoke.Kernel32;
namespace Vanara.Extensions
{
/// <summary>Values which define a processes integrity level.</summary>
public enum ProcessIntegrityLevel
{
/// <summary>Untrusted.</summary>
Untrusted,
/// <summary>Undefined.</summary>
Undefined,
/// <summary>Low.</summary>
Low,
/// <summary>Medium.</summary>
Medium,
/// <summary>High.</summary>
High,
/// <summary>System.</summary>
System
}
/// <summary>Extension methods for <see cref="Process"/> for privilegs, status, elevation and relationships.</summary>
/// <summary>Extension methods for <see cref="Process"/> for privileges, status, elevation and relationships.</summary>
public static partial class ProcessExtension
{
/// <summary>Disables a specified system privilege on a process.</summary>
/// <param name="process">The process on which to disable the privilege.</param>
/// <param name="privilege">The privilege to disable.</param>
public static void DisablePrivilege(this Process process, SystemPrivilege privilege)
{
using (var hObj = SafeHTOKEN.FromProcess(process, TokenAccess.TOKEN_ADJUST_PRIVILEGES | TokenAccess.TOKEN_QUERY))
{
hObj.AdjustPrivilege(privilege, PrivilegeAttributes.SE_PRIVILEGE_DISABLED);
}
using var hObj = SafeHTOKEN.FromProcess(process, TokenAccess.TOKEN_ADJUST_PRIVILEGES | TokenAccess.TOKEN_QUERY);
hObj.AdjustPrivilege(privilege, PrivilegeAttributes.SE_PRIVILEGE_DISABLED);
}
/// <summary>Enables a specified system privilege on a process.</summary>
/// <param name="process">The process on which to enable the privilege.</param>
/// <param name="privilege">The privilege to enable.</param>
public static void EnablePrivilege(this Process process, SystemPrivilege privilege)
{
using (var hObj = SafeHTOKEN.FromProcess(process, TokenAccess.TOKEN_ADJUST_PRIVILEGES | TokenAccess.TOKEN_QUERY))
{
hObj.AdjustPrivilege(privilege, PrivilegeAttributes.SE_PRIVILEGE_ENABLED);
}
using var hObj = SafeHTOKEN.FromProcess(process, TokenAccess.TOKEN_ADJUST_PRIVILEGES | TokenAccess.TOKEN_QUERY);
hObj.AdjustPrivilege(privilege, PrivilegeAttributes.SE_PRIVILEGE_ENABLED);
}
#if (NET35 || NET40 || NET45)
@ -83,21 +104,15 @@ namespace Vanara.Extensions
var tokenIL = hObject.GetInfo<TOKEN_MANDATORY_LABEL>(TOKEN_INFORMATION_CLASS.TokenIntegrityLevel);
// Integrity Level SIDs are in the form of S-1-16-0xXXXX. (e.g. S-1-16-0x1000 stands for low integrity level SID). There is one and only one subauthority.
switch (GetSidSubAuthority(tokenIL.Label.Sid, 0))
return (GetSidSubAuthority(tokenIL.Label.Sid, 0)) switch
{
case 0:
return ProcessIntegrityLevel.Untrusted;
case 0x1000:
return ProcessIntegrityLevel.Low;
case var iVal when iVal >= 0x2000 && iVal < 0x3000:
return ProcessIntegrityLevel.Medium;
case var iVal when iVal >= 0x4000:
return ProcessIntegrityLevel.System;
case var iVal when iVal >= 0x3000:
return ProcessIntegrityLevel.High;
default:
return ProcessIntegrityLevel.Undefined;
}
0 => ProcessIntegrityLevel.Untrusted,
0x1000 => ProcessIntegrityLevel.Low,
var iVal when iVal >= 0x2000 && iVal < 0x3000 => ProcessIntegrityLevel.Medium,
var iVal when iVal >= 0x4000 => ProcessIntegrityLevel.System,
var iVal when iVal >= 0x3000 => ProcessIntegrityLevel.High,
_ => ProcessIntegrityLevel.Undefined,
};
}
#if (NET20 || NET35 || NET40 || NET45)
@ -112,11 +127,9 @@ namespace Vanara.Extensions
throw new ArgumentNullException(nameof(p));
try
{
using (var mo = new ManagementObject($"win32_process.handle='{p.Id}'"))
{
mo.Get();
return Process.GetProcessById(Convert.ToInt32(mo["ParentProcessId"]), p.MachineName);
}
using var mo = new ManagementObject($"win32_process.handle='{p.Id}'");
mo.Get();
return Process.GetProcessById(Convert.ToInt32(mo["ParentProcessId"]), p.MachineName);
}
catch { }
return null;
@ -131,10 +144,8 @@ namespace Vanara.Extensions
/// </returns>
public static IEnumerable<PrivilegeAndAttributes> GetPrivileges(this Process process)
{
using (var hObj = SafeHTOKEN.FromProcess(process, TokenAccess.TOKEN_QUERY | TokenAccess.TOKEN_DUPLICATE))
{
return hObj.GetPrivileges().Select(la => new PrivilegeAndAttributes(la.Luid.GetPrivilege(process.MachineName), la.Attributes));
}
using var hObj = SafeHTOKEN.FromProcess(process, TokenAccess.TOKEN_QUERY | TokenAccess.TOKEN_DUPLICATE);
return hObj.GetPrivileges().Select(la => new PrivilegeAndAttributes(la.Luid.GetPrivilege(process.MachineName), la.Attributes));
}
/// <summary>Determines whether the specified privilege is had by the process.</summary>
@ -150,8 +161,8 @@ namespace Vanara.Extensions
/// <returns><c>true</c> if the process has the specified privilege; otherwise, <c>false</c>.</returns>
public static bool HasPrivileges(this Process process, bool requireAll, params SystemPrivilege[] privs)
{
using (var hObj = SafeHTOKEN.FromProcess(process, TokenAccess.TOKEN_QUERY | TokenAccess.TOKEN_DUPLICATE))
return hObj.HasPrivileges(requireAll, privs);
using var hObj = SafeHTOKEN.FromProcess(process, TokenAccess.TOKEN_QUERY | TokenAccess.TOKEN_DUPLICATE);
return hObj.HasPrivileges(requireAll, privs);
}
/// <summary>
@ -178,13 +189,23 @@ namespace Vanara.Extensions
try
{
// Open the access token of the current process with TOKEN_QUERY.
using (var hObject = SafeHTOKEN.FromProcess(p, TokenAccess.TOKEN_QUERY | TokenAccess.TOKEN_DUPLICATE))
return hObject.IsElevated;
using var hObject = SafeHTOKEN.FromProcess(p, TokenAccess.TOKEN_QUERY | TokenAccess.TOKEN_DUPLICATE);
return hObject.IsElevated;
}
catch { }
return false;
}
/// <summary>Determines whether the process is running within a job object.</summary>
/// <param name="p">
/// <para>
/// The process to be tested. The handle must have the PROCESS_QUERY_INFORMATION or PROCESS_QUERY_LIMITED_INFORMATION access right.
/// </para>
/// <para><c>Windows Server 2003 and Windows XP:</c> The handle must have the PROCESS_QUERY_INFORMATION access right.</para>
/// </param>
/// <returns><see langword="true"/> if the process is running in a job, and <see langword="false"/> otherwise.</returns>
public static bool IsInJob(this Process p) => IsProcessInJob(p, HJOB.NULL, out var res) ? res : throw Win32Error.GetLastError().GetException();
/// <summary>
/// The function checks whether the primary access token of the process belongs to user account that is a member of the local Administrators group,
/// even if it currently is not elevated.
@ -196,12 +217,197 @@ namespace Vanara.Extensions
/// </returns>
public static bool IsRunningAsAdmin(this Process proc) => UAC.IsRunningAsAdmin(proc);
/// <summary>Removes a specified system privilege from a process.</summary>
/// <param name="process">The process from which to remove the privilege.</param>
/// <param name="privilege">The privilege to remove.</param>
public static void RemovePrivilege(this Process process, SystemPrivilege privilege)
{
using (var hObj = SafeHTOKEN.FromProcess(process, TokenAccess.TOKEN_ADJUST_PRIVILEGES | TokenAccess.TOKEN_QUERY))
using var hObj = SafeHTOKEN.FromProcess(process, TokenAccess.TOKEN_ADJUST_PRIVILEGES | TokenAccess.TOKEN_QUERY);
hObj.AdjustPrivilege(privilege, PrivilegeAttributes.SE_PRIVILEGE_REMOVED);
}
/// <summary>Resumes the primary thread on the process.</summary>
/// <param name="process">The running process.</param>
public static void ResumePrimaryThread(this Process process)
{
using var hTh = OpenThread((uint)ThreadAccess.THREAD_RESUME, true, (uint)process.Threads[0].Id);
ResumeThread(hTh);
}
/// <summary>Extension method to start a process with extra flags.</summary>
/// <param name="process">The process to start.</param>
/// <param name="flags">The process flags.</param>
/// <returns><see langword="true"/> if successful.</returns>
/// <exception cref="InvalidOperationException">
/// Process.StartEx cannot be used when StartInfo.UseShellExecute is true. or File name is missing. or StandardOutputEncoding not
/// allowed or StandardErrorEncoding not allowed
/// </exception>
/// <exception cref="ArgumentException">Can't set duplicate password</exception>
public static bool StartEx(this Process process, CREATE_PROCESS flags)
{
var startInfo = process.StartInfo;
if (startInfo.UseShellExecute)
throw new InvalidOperationException("Process.StartEx cannot be used when StartInfo.UseShellExecute is true.");
if (startInfo.FileName.Length == 0)
throw new InvalidOperationException("File name is missing.");
process.Close();
if (startInfo.StandardOutputEncoding != null && !startInfo.RedirectStandardOutput)
throw new InvalidOperationException("StandardOutputEncoding not allowed");
if (startInfo.StandardErrorEncoding != null && !startInfo.RedirectStandardError)
throw new InvalidOperationException("StandardErrorEncoding not allowed");
// TODO: Cannot start a new process and store its handle if the object has been disposed, since finalization has been suppressed.
// if (process.disposed) throw new ObjectDisposedException(GetType().Name);
var commandLine = new StringBuilder(string.Concat(PathEx.QuoteIfHasSpaces(startInfo.FileName), string.IsNullOrEmpty(startInfo.Arguments) ? "" : " " + startInfo.Arguments));
var startupInfo = STARTUPINFO.Default;
bool retVal;
Win32Error errorCode = 0;
// handles used in parent process
SafeHPIPE standardInputWritePipeHandle = null, standardOutputReadPipeHandle = null, standardErrorReadPipeHandle = null, hStdInput = null, hStdOutput = null, hStdError = null;
// set up the streams
if (startInfo.RedirectStandardInput || startInfo.RedirectStandardOutput || startInfo.RedirectStandardError)
{
hObj.AdjustPrivilege(privilege, PrivilegeAttributes.SE_PRIVILEGE_REMOVED);
if (startInfo.RedirectStandardInput)
{
CreatePipe(out standardInputWritePipeHandle, out hStdInput, new SECURITY_ATTRIBUTES(), 0);
startupInfo.hStdInput = hStdInput;
}
else
{
startupInfo.hStdInput = (IntPtr)GetStdHandle(StdHandleType.STD_INPUT_HANDLE);
}
if (startInfo.RedirectStandardOutput)
{
CreatePipe(out standardOutputReadPipeHandle, out hStdOutput, new SECURITY_ATTRIBUTES(), 0);
startupInfo.hStdOutput = hStdOutput;
}
else
{
startupInfo.hStdOutput = (IntPtr)GetStdHandle(StdHandleType.STD_OUTPUT_HANDLE);
}
if (startInfo.RedirectStandardError)
{
CreatePipe(out standardErrorReadPipeHandle, out hStdError, new SECURITY_ATTRIBUTES(), 0);
startupInfo.hStdError = hStdError;
}
else
{
startupInfo.hStdError = (IntPtr)GetStdHandle(StdHandleType.STD_ERROR_HANDLE);
}
startupInfo.dwFlags = STARTF.STARTF_USESTDHANDLES;
}
// set up the creation flags paramater
var creationFlags = flags;
if (startInfo.CreateNoWindow) creationFlags |= CREATE_PROCESS.CREATE_NO_WINDOW;
var workingDirectory = startInfo.WorkingDirectory;
if (workingDirectory == string.Empty)
workingDirectory = Environment.CurrentDirectory;
SafePROCESS_INFORMATION processInfo;
if (startInfo.UserName.Length != 0)
{
if (startInfo.Password != null)
throw new ArgumentException("Can't set duplicate password");
ProcessLogonFlags logonFlags = 0;
if (startInfo.LoadUserProfile)
logonFlags = ProcessLogonFlags.LOGON_WITH_PROFILE;
using var password = startInfo.Password != null ? new SafeCoTaskMemString(startInfo.Password) : new SafeCoTaskMemString(string.Empty);
System.Runtime.CompilerServices.RuntimeHelpers.PrepareConstrainedRegions();
try { }
finally
{
retVal = CreateProcessWithLogonW(
startInfo.UserName,
startInfo.Domain,
password,
logonFlags,
null, // we don't need this since all the info is in commandLine
commandLine,
creationFlags,
startInfo.EnvironmentVariables?.Cast<DictionaryEntry>().Select(e => $"{e.Key}={e.Value}").ToArray(),
workingDirectory,
startupInfo, // pointer to STARTUPINFO
out processInfo); // pointer to PROCESS_INFORMATION
if (!retVal)
errorCode = Win32Error.GetLastError();
}
if (!retVal)
{
if (errorCode == Win32Error.ERROR_BAD_EXE_FORMAT || errorCode == Win32Error.ERROR_EXE_MACHINE_TYPE_MISMATCH)
throw errorCode.GetException("Invalid application");
throw errorCode.GetException();
}
}
else
{
System.Runtime.CompilerServices.RuntimeHelpers.PrepareConstrainedRegions();
try { }
finally
{
retVal = CreateProcess(
null, // we don't need this since all the info is in commandLine
commandLine, // pointer to the command line string
null, // pointer to process security attributes, we don't need to inheriat the handle
null, // pointer to thread security attributes
true, // handle inheritance flag
creationFlags, // creation flags
startInfo.EnvironmentVariables?.Cast<DictionaryEntry>().Select(e => $"{e.Key}={e.Value}").ToArray(),
workingDirectory, // pointer to current directory name
startupInfo, // pointer to STARTUPINFO
out processInfo); // pointer to PROCESS_INFORMATION
if (!retVal)
errorCode = Marshal.GetLastWin32Error();
}
if (!retVal)
{
if (errorCode == Win32Error.ERROR_BAD_EXE_FORMAT || errorCode == Win32Error.ERROR_EXE_MACHINE_TYPE_MISMATCH)
throw errorCode.GetException("Invalid application");
throw errorCode.GetException();
}
}
#pragma warning disable CS0618 // Type or member is obsolete
if (startInfo.RedirectStandardInput)
{
var stdIn = new StreamWriter(new FileStream(standardInputWritePipeHandle.DangerousGetHandle(), System.IO.FileAccess.Write, false, 4096), Console.InputEncoding, 4096);
stdIn.AutoFlush = true;
process.SetFieldValue("standardInput", stdIn);
}
if (startInfo.RedirectStandardOutput)
{
var enc = (startInfo.StandardOutputEncoding != null) ? startInfo.StandardOutputEncoding : Console.OutputEncoding;
var stdOut = new StreamReader(new FileStream(standardOutputReadPipeHandle.DangerousGetHandle(), System.IO.FileAccess.Read, false, 4096), enc, true, 4096);
process.SetFieldValue("standardOutput", stdOut);
}
if (startInfo.RedirectStandardError)
{
var enc = (startInfo.StandardErrorEncoding != null) ? startInfo.StandardErrorEncoding : Console.OutputEncoding;
var stdErr = new StreamReader(new FileStream(standardErrorReadPipeHandle.DangerousGetHandle(), System.IO.FileAccess.Read, false, 4096), enc, true, 4096);
process.SetFieldValue("standardError", stdErr);
}
#pragma warning restore CS0618 // Type or member is obsolete
if (!processInfo.hProcess.IsInvalid)
{
//process.InvokeMethod("SetProcessHandle", new Microsoft.Win32.SafeHandles.SafeProcessHandle(processInfo.hProcess.Duplicate(), true));
process.InvokeMethod("SetProcessId", (int)processInfo.dwProcessId);
var h = process.Handle;
return true;
}
return false;
}
private static IEnumerable<Process> GetChildProcesses(int pid, Dictionary<int, List<Tuple<int, int>>> allProcs, string machineName, bool allChildren = true)