mirror of
https://github.com/PowerShell/PowerShell
synced 2026-06-08 12:12:50 +00:00
Christoph Bergmeister
bbd48f60e0
* Implement location history feature for Set-Location. This makes it possible to go back to the last directory using 'cd -', which is exactly the same syntax as on Linux shells. * Use an existing stack implementation instead of relying on an environment variable and move logic for 'cd -' into the internal class of SessionState.Path.SetLocation Keep the (additional) setting of an environment for Unix system in case of mixed usage of cd and Set-Location to provide consistency. * Use a bounded stack with a limit of 1000 and adapt tests. Remove setting environment variable on Linux as discussed in PR. * Fix test: use get-location explicitly to avoid subtle difference in the path string (e.g. an additional slash at the end) Make syntax to .net call of environment consistent with surrounding code * Move initialization of _workingLocationHistoryStack into constructor of SessionStateInternal and set the limit to 20 as discussed in PR 5051. * Make new BoundedStack class in engine utils internal
1512 lines
60 KiB
C#
1512 lines
60 KiB
C#
// Copyright (c) Microsoft Corporation. All rights reserved.
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// Licensed under the MIT License.
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using System.Security;
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using System.Runtime.InteropServices;
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using System.Diagnostics.CodeAnalysis;
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using System.Management.Automation.Configuration;
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using System.Management.Automation.Internal;
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using System.Management.Automation.Security;
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using System.Reflection;
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using Microsoft.PowerShell.Commands;
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using Microsoft.Win32;
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using System.Globalization;
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using System.IO;
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using System.Linq;
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using System.Collections.ObjectModel;
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using System.Collections.Generic;
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using System.Collections.Concurrent;
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using System.ComponentModel;
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using System.Runtime.CompilerServices;
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using System.Threading;
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using System.Text;
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using TypeTable = System.Management.Automation.Runspaces.TypeTable;
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using System.Diagnostics;
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using Microsoft.Win32.SafeHandles;
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namespace System.Management.Automation
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{
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/// <summary>
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/// helper fns
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/// </summary>
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internal static class Utils
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{
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// From System.Web.Util.HashCodeCombiner
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internal static int CombineHashCodes(int h1, int h2)
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{
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return unchecked(((h1 << 5) + h1) ^ h2);
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}
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internal static int CombineHashCodes(int h1, int h2, int h3)
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{
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return CombineHashCodes(CombineHashCodes(h1, h2), h3);
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}
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internal static int CombineHashCodes(int h1, int h2, int h3, int h4)
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{
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return CombineHashCodes(CombineHashCodes(h1, h2), CombineHashCodes(h3, h4));
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}
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internal static int CombineHashCodes(int h1, int h2, int h3, int h4, int h5)
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{
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return CombineHashCodes(CombineHashCodes(h1, h2, h3, h4), h5);
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}
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internal static int CombineHashCodes(int h1, int h2, int h3, int h4, int h5, int h6)
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{
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return CombineHashCodes(CombineHashCodes(h1, h2, h3, h4), CombineHashCodes(h5, h6));
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}
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internal static int CombineHashCodes(int h1, int h2, int h3, int h4, int h5, int h6, int h7)
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{
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return CombineHashCodes(CombineHashCodes(h1, h2, h3, h4), CombineHashCodes(h5, h6, h7));
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}
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internal static int CombineHashCodes(int h1, int h2, int h3, int h4, int h5, int h6, int h7, int h8)
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{
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return CombineHashCodes(CombineHashCodes(h1, h2, h3, h4), CombineHashCodes(h5, h6, h7, h8));
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}
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/// <summary>
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/// Allowed PowerShell Editions
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/// </summary>
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internal static string[] AllowedEditionValues = { "Desktop", "Core" };
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/// <summary>
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/// helper fn to check byte[] arg for null.
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/// </summary>
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///
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///<param name="arg"> arg to check </param>
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///<param name="argName"> name of the arg </param>
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///
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///<returns> Does not return a value </returns>
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internal static void CheckKeyArg(byte[] arg, string argName)
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{
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if (arg == null)
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{
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throw PSTraceSource.NewArgumentNullException(argName);
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}
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//
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// we use AES algorithm which supports key
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// lengths of 128, 192 and 256 bits.
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// We throw ArgumentException if the key is
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// of any other length
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//
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else if (!((arg.Length == 16) ||
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(arg.Length == 24) ||
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(arg.Length == 32)))
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{
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throw PSTraceSource.NewArgumentException(argName, Serialization.InvalidKeyLength, argName);
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}
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}
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/// <summary>
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/// helper fn to check arg for empty or null.
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/// Throws ArgumentNullException on either condition.
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/// </summary>
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///
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///<param name="arg"> arg to check </param>
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///<param name="argName"> name of the arg </param>
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///
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///<returns> Does not return a value </returns>
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internal static void CheckArgForNullOrEmpty(string arg, string argName)
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{
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if (arg == null)
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{
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throw PSTraceSource.NewArgumentNullException(argName);
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}
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else if (arg.Length == 0)
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{
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throw PSTraceSource.NewArgumentException(argName);
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}
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}
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/// <summary>
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/// helper fn to check arg for null.
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/// Throws ArgumentNullException on either condition.
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/// </summary>
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///
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///<param name="arg"> arg to check </param>
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///<param name="argName"> name of the arg </param>
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///
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///<returns> Does not return a value </returns>
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internal static void CheckArgForNull(object arg, string argName)
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{
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if (arg == null)
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{
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throw PSTraceSource.NewArgumentNullException(argName);
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}
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}
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/// <summary>
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/// helper fn to check arg for null.
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/// </summary>
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///
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///<param name="arg"> arg to check </param>
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///<param name="argName"> name of the arg </param>
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///
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///<returns> Does not return a value </returns>
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internal static void CheckSecureStringArg(SecureString arg, string argName)
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{
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if (arg == null)
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{
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throw PSTraceSource.NewArgumentNullException(argName);
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}
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}
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[ArchitectureSensitive]
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internal static string GetStringFromSecureString(SecureString ss)
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{
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IntPtr p = IntPtr.Zero;
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string s = null;
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try
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{
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p = Marshal.SecureStringToCoTaskMemUnicode(ss);
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s = Marshal.PtrToStringUni(p);
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}
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finally
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{
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if (p != IntPtr.Zero)
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{
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Marshal.ZeroFreeCoTaskMemUnicode(p);
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}
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}
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return s;
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}
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/// <summary>
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/// Gets TypeTable by querying the ExecutionContext stored in
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/// Thread-Local-Storage. This will return null if ExecutionContext
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/// is not available.
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/// </summary>
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/// <returns></returns>
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internal static TypeTable GetTypeTableFromExecutionContextTLS()
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{
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ExecutionContext ecFromTLS = Runspaces.LocalPipeline.GetExecutionContextFromTLS();
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if (ecFromTLS == null)
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{
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return null;
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}
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return ecFromTLS.TypeTable;
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}
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#if !UNIX
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private static string s_pshome = null;
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/// <summary>
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/// Get the application base path of the shell from registry
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/// </summary>
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internal static string GetApplicationBaseFromRegistry(string shellId)
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{
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bool wantPsHome = (object)shellId == (object)DefaultPowerShellShellID;
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if (wantPsHome && s_pshome != null)
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return s_pshome;
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string engineKeyPath = RegistryStrings.MonadRootKeyPath + "\\" +
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PSVersionInfo.RegistryVersionKey + "\\" + RegistryStrings.MonadEngineKey;
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using (RegistryKey engineKey = Registry.LocalMachine.OpenSubKey(engineKeyPath))
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{
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if (engineKey != null)
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{
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var result = engineKey.GetValue(RegistryStrings.MonadEngine_ApplicationBase) as string;
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result = Environment.ExpandEnvironmentVariables(result);
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if (wantPsHome)
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Interlocked.CompareExchange(ref s_pshome, null, result);
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return result;
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}
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}
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return null;
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}
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#endif
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internal static string DefaultPowerShellAppBase => GetApplicationBase(DefaultPowerShellShellID);
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internal static string GetApplicationBase(string shellId)
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{
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// Use the location of SMA.dll as the application base.
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Assembly assembly = typeof(PSObject).Assembly;
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return Path.GetDirectoryName(assembly.Location);
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}
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private static string[] s_productFolderDirectories;
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/// <summary>
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/// Specifies the per-user configuration settings directory in a platform agnostic manner.
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/// </summary>
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/// <returns>The current user's configuration settings directory</returns>
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internal static string GetUserConfigurationDirectory()
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{
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#if UNIX
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return Platform.SelectProductNameForDirectory(Platform.XDG_Type.CONFIG);
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#else
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string basePath = Environment.GetFolderPath(Environment.SpecialFolder.Personal);
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return IO.Path.Combine(basePath, Utils.ProductNameForDirectory);
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#endif
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}
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private static string[] GetProductFolderDirectories()
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{
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if (s_productFolderDirectories == null)
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{
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List<string> baseDirectories = new List<string>();
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// Retrieve the application base from the registry
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string appBase = Utils.DefaultPowerShellAppBase;
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if (!string.IsNullOrEmpty(appBase))
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{
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baseDirectories.Add(appBase);
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}
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#if !UNIX
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// Win8: 454976
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// Now add the two variations of System32
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baseDirectories.Add(Environment.GetFolderPath(Environment.SpecialFolder.System));
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string systemX86 = Environment.GetFolderPath(Environment.SpecialFolder.SystemX86);
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if (!string.IsNullOrEmpty(systemX86))
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{
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baseDirectories.Add(systemX86);
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}
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#endif
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// And built-in modules
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string progFileDir;
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// TODO: #1184 will resolve this work-around
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// Side-by-side versions of PowerShell use modules from their application base, not
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// the system installation path.
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progFileDir = Path.Combine(appBase, "Modules");
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if (!string.IsNullOrEmpty(progFileDir))
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{
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baseDirectories.Add(Path.Combine(progFileDir, "PackageManagement"));
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baseDirectories.Add(Path.Combine(progFileDir, "PowerShellGet"));
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baseDirectories.Add(Path.Combine(progFileDir, "Pester"));
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baseDirectories.Add(Path.Combine(progFileDir, "PSReadLine"));
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}
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Interlocked.CompareExchange(ref s_productFolderDirectories, baseDirectories.ToArray(), null);
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}
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return s_productFolderDirectories;
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}
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/// <summary>
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/// Checks if the filePath represents a file under product folder
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/// ie., PowerShell ApplicationBase or $env:windir\system32 or
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/// $env:windir\syswow64.
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/// </summary>
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/// <returns>
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/// true: if the filePath is under product folder
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/// false: otherwise
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/// </returns>
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internal static bool IsUnderProductFolder(string filePath)
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{
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FileInfo fileInfo = new FileInfo(filePath);
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string filename = fileInfo.FullName;
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var productFolderDirectories = GetProductFolderDirectories();
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for (int i = 0; i < productFolderDirectories.Length; i++)
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{
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string applicationBase = productFolderDirectories[i];
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if (filename.StartsWith(applicationBase, StringComparison.OrdinalIgnoreCase))
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return true;
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}
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return false;
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}
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/// <summary>
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/// Checks if the current process is using WOW
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/// </summary>
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internal static bool IsRunningFromSysWOW64()
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{
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return DefaultPowerShellAppBase.Contains("SysWOW64");
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}
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/// <summary>
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/// Checks if host machine is WinPE
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/// </summary>
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internal static bool IsWinPEHost()
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{
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#if !UNIX
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RegistryKey winPEKey = null;
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try
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{
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// The existence of the following registry confirms that the host machine is a WinPE
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// HKLM\System\CurrentControlSet\Control\MiniNT
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winPEKey = Registry.LocalMachine.OpenSubKey(@"System\CurrentControlSet\Control\MiniNT");
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return winPEKey != null;
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}
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catch (ArgumentException) { }
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catch (SecurityException) { }
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catch (ObjectDisposedException) { }
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finally
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{
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if (winPEKey != null)
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{
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winPEKey.Dispose();
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}
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}
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#endif
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return false;
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}
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#region Versioning related methods
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/// <summary>
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/// returns current major version of monad ( that is running ) in a string
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/// format.
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/// </summary>
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/// <returns>string</returns>
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/// <remarks>
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/// Cannot return a Version object as minor number is a requirement for
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/// version object.
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/// </remarks>
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internal static string GetCurrentMajorVersion()
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{
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return PSVersionInfo.PSVersion.Major.ToString(CultureInfo.InvariantCulture);
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}
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/// <summary>
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/// Coverts a string to version format.
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/// If the string is of the format x (ie., no dots), then ".0" is appended
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/// to the string.
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/// Version.TryParse will be used to convert the string to a Version
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/// object.
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/// </summary>
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/// <param name="versionString">string representing version</param>
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/// <returns>A Version Object.</returns>
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internal static Version StringToVersion(string versionString)
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{
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// max of 1 dot is allowed in version
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if (string.IsNullOrEmpty(versionString))
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{
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return null;
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}
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int dotCount = 0;
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foreach (char c in versionString)
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{
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if (c == '.')
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{
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dotCount++;
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if (dotCount > 1)
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{
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break;
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}
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}
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}
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// Version.TryParse expects the string to be in format: major.minor[.build[.revision]]
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if (dotCount == 0)
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{
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versionString += ".0";
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}
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Version result = null;
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if (Version.TryParse(versionString, out result))
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{
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return result;
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}
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return null;
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}
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/// <summary>
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/// Checks whether current monad session supports version specified
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/// by ver.
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/// </summary>
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/// <param name="ver">Version to check</param>
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/// <returns>true if supported, false otherwise</returns>
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internal static bool IsPSVersionSupported(string ver)
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{
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// Convert version to supported format ie., x.x
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Version inputVersion = StringToVersion(ver);
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return IsPSVersionSupported(inputVersion);
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}
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/// <summary>
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/// Checks whether current monad session supports version specified
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/// by checkVersion.
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/// </summary>
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/// <param name="checkVersion">Version to check</param>
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/// <returns>true if supported, false otherwise</returns>
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internal static bool IsPSVersionSupported(Version checkVersion)
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{
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if (checkVersion == null)
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{
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return false;
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}
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foreach (Version compatibleVersion in PSVersionInfo.PSCompatibleVersions)
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{
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if (checkVersion.Major == compatibleVersion.Major && checkVersion.Minor <= compatibleVersion.Minor)
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return true;
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}
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return false;
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}
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/// <summary>
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/// Checks whether current monad session supports edition specified
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/// by checkEdition.
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/// </summary>
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/// <param name="checkEdition">Edition to check</param>
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/// <returns>true if supported, false otherwise</returns>
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internal static bool IsPSEditionSupported(string checkEdition)
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{
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return PSVersionInfo.PSEdition.Equals(checkEdition, StringComparison.OrdinalIgnoreCase);
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}
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/// <summary>
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/// Checks whether the specified edition values is allowed.
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/// </summary>
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/// <param name="editionValue">Edition value to check</param>
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/// <returns>true if allowed, false otherwise</returns>
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internal static bool IsValidPSEditionValue(string editionValue)
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{
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return AllowedEditionValues.Contains(editionValue, StringComparer.OrdinalIgnoreCase);
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}
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#endregion
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/// <summary>
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/// String representing the Default shellID.
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/// </summary>
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internal const string DefaultPowerShellShellID = "Microsoft.PowerShell";
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/// <summary>
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/// This is used to construct the profile path.
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/// </summary>
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internal static string ProductNameForDirectory = Platform.IsInbox ? "WindowsPowerShell" : "PowerShell";
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/// <summary>
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/// The subdirectory of module paths
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/// e.g. ~\Documents\WindowsPowerShell\Modules and %ProgramFiles%\WindowsPowerShell\Modules
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/// </summary>
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internal static string ModuleDirectory = Path.Combine(ProductNameForDirectory, "Modules");
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internal readonly static ConfigScope[] SystemWideOnlyConfig = new[] { ConfigScope.SystemWide };
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internal readonly static ConfigScope[] CurrentUserOnlyConfig = new[] { ConfigScope.CurrentUser };
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internal readonly static ConfigScope[] SystemWideThenCurrentUserConfig = new[] { ConfigScope.SystemWide, ConfigScope.CurrentUser };
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internal readonly static ConfigScope[] CurrentUserThenSystemWideConfig = new[] { ConfigScope.CurrentUser, ConfigScope.SystemWide };
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internal static T GetPolicySetting<T>(ConfigScope[] preferenceOrder) where T : PolicyBase, new()
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|
{
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T policy = null;
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#if !UNIX
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// On Windows, group policy settings from registry take precedence.
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// If the requested policy is not defined in registry, we query the configuration file.
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policy = GetPolicySettingFromGPO<T>(preferenceOrder);
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if (policy != null) { return policy; }
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#endif
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policy = GetPolicySettingFromConfigFile<T>(preferenceOrder);
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return policy;
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}
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|
private readonly static ConcurrentDictionary<ConfigScope, PowerShellPolicies> s_cachedPoliciesFromConfigFile =
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new ConcurrentDictionary<ConfigScope, PowerShellPolicies>();
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|
|
/// <summary>
|
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/// Get a specific kind of policy setting from the configuration file.
|
|
/// </summary>
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|
private static T GetPolicySettingFromConfigFile<T>(ConfigScope[] preferenceOrder) where T : PolicyBase, new()
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|
{
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foreach (ConfigScope scope in preferenceOrder)
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|
{
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|
PowerShellPolicies policies;
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|
if (InternalTestHooks.BypassGroupPolicyCaching)
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|
{
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policies = PowerShellConfig.Instance.GetPowerShellPolicies(scope);
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}
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else if (!s_cachedPoliciesFromConfigFile.TryGetValue(scope, out policies))
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{
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|
// Use lock here to reduce the contention on accessing the configuration file
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|
lock (s_cachedPoliciesFromConfigFile)
|
|
{
|
|
policies = s_cachedPoliciesFromConfigFile.GetOrAdd(scope, PowerShellConfig.Instance.GetPowerShellPolicies);
|
|
}
|
|
}
|
|
|
|
if (policies != null)
|
|
{
|
|
PolicyBase result = null;
|
|
switch (typeof(T).Name)
|
|
{
|
|
case nameof(ScriptExecution): result = policies.ScriptExecution; break;
|
|
case nameof(ScriptBlockLogging): result = policies.ScriptBlockLogging; break;
|
|
case nameof(ModuleLogging): result = policies.ModuleLogging; break;
|
|
case nameof(ProtectedEventLogging): result = policies.ProtectedEventLogging; break;
|
|
case nameof(Transcription): result = policies.Transcription; break;
|
|
case nameof(UpdatableHelp): result = policies.UpdatableHelp; break;
|
|
case nameof(ConsoleSessionConfiguration): result = policies.ConsoleSessionConfiguration; break;
|
|
default: Diagnostics.Assert(false, "Should be unreachable code. Update this switch block when new PowerShell policy types are added."); break;
|
|
}
|
|
if (result != null) { return (T) result; }
|
|
}
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
#if !UNIX
|
|
private static readonly Dictionary<string, string> GroupPolicyKeys = new Dictionary<string, string>
|
|
{
|
|
{nameof(ScriptExecution), @"Software\Policies\Microsoft\PowerShellCore"},
|
|
{nameof(ScriptBlockLogging), @"Software\Policies\Microsoft\PowerShellCore\ScriptBlockLogging"},
|
|
{nameof(ModuleLogging), @"Software\Policies\Microsoft\PowerShellCore\ModuleLogging"},
|
|
{nameof(ProtectedEventLogging), @"Software\Policies\Microsoft\Windows\EventLog\ProtectedEventLogging"},
|
|
{nameof(Transcription), @"Software\Policies\Microsoft\PowerShellCore\Transcription"},
|
|
{nameof(UpdatableHelp), @"Software\Policies\Microsoft\PowerShellCore\UpdatableHelp"},
|
|
{nameof(ConsoleSessionConfiguration), @"Software\Policies\Microsoft\PowerShellCore\ConsoleSessionConfiguration"}
|
|
};
|
|
private readonly static ConcurrentDictionary<Tuple<ConfigScope, string>, PolicyBase> s_cachedPoliciesFromRegistry =
|
|
new ConcurrentDictionary<Tuple<ConfigScope, string>, PolicyBase>();
|
|
|
|
/// <summary>
|
|
/// The implementation of fetching a specific kind of policy setting from the given configuration scope.
|
|
/// </summary>
|
|
private static T GetPolicySettingFromGPOImpl<T>(ConfigScope scope) where T : PolicyBase, new()
|
|
{
|
|
Type tType = typeof(T);
|
|
// SystemWide scope means 'LocalMachine' root key when query from registry
|
|
RegistryKey rootKey = (scope == ConfigScope.SystemWide) ? Registry.LocalMachine : Registry.CurrentUser;
|
|
|
|
GroupPolicyKeys.TryGetValue(tType.Name, out string gpoKeyPath);
|
|
Diagnostics.Assert(gpoKeyPath != null, StringUtil.Format("The GPO registry key path should be pre-defined for {0}", tType.Name));
|
|
|
|
using (RegistryKey gpoKey = rootKey.OpenSubKey(gpoKeyPath))
|
|
{
|
|
// If the corresponding GPO key doesn't exist, return null
|
|
if (gpoKey == null) { return null; }
|
|
|
|
// The corresponding GPO key exists, then create an instance of T
|
|
// and populate its properties with the settings
|
|
object tInstance = Activator.CreateInstance(tType, nonPublic: true);
|
|
var properties = tType.GetProperties(BindingFlags.Instance | BindingFlags.Public);
|
|
bool isAnyPropertySet = false;
|
|
|
|
string[] valueNames = gpoKey.GetValueNames();
|
|
string[] subKeyNames = gpoKey.GetSubKeyNames();
|
|
var valueNameSet = valueNames.Length > 0 ? new HashSet<string>(valueNames, StringComparer.OrdinalIgnoreCase) : null;
|
|
var subKeyNameSet = subKeyNames.Length > 0 ? new HashSet<string>(subKeyNames, StringComparer.OrdinalIgnoreCase) : null;
|
|
|
|
foreach (var property in properties)
|
|
{
|
|
string settingName = property.Name;
|
|
object rawRegistryValue = null;
|
|
|
|
// Get the raw value from registry.
|
|
if (valueNameSet != null && valueNameSet.Contains(settingName))
|
|
{
|
|
rawRegistryValue = gpoKey.GetValue(settingName);
|
|
}
|
|
else if (subKeyNameSet != null && subKeyNameSet.Contains(settingName))
|
|
{
|
|
using (RegistryKey subKey = gpoKey.OpenSubKey(settingName))
|
|
{
|
|
if (subKey != null) { rawRegistryValue = subKey.GetValueNames(); }
|
|
}
|
|
}
|
|
|
|
// Get the actual property value based on the property type.
|
|
// If the final property value is not null, then set the property.
|
|
if (rawRegistryValue != null)
|
|
{
|
|
Type propertyType = property.PropertyType;
|
|
object propertyValue = null;
|
|
|
|
switch (propertyType)
|
|
{
|
|
case var _ when propertyType == typeof(bool?):
|
|
if (rawRegistryValue is int rawIntValue)
|
|
{
|
|
if (rawIntValue == 1) { propertyValue = true; }
|
|
else if (rawIntValue == 0) { propertyValue = false; }
|
|
}
|
|
break;
|
|
case var _ when propertyType == typeof(string):
|
|
if (rawRegistryValue is string rawStringValue)
|
|
{
|
|
propertyValue = rawStringValue;
|
|
}
|
|
break;
|
|
case var _ when propertyType == typeof(string[]):
|
|
if (rawRegistryValue is string[] rawStringArrayValue)
|
|
{
|
|
propertyValue = rawStringArrayValue;
|
|
}
|
|
else if (rawRegistryValue is string stringValue)
|
|
{
|
|
propertyValue = new string[] { stringValue };
|
|
}
|
|
break;
|
|
default:
|
|
Diagnostics.Assert(false, "Should be unreachable code. Update this switch block when properties of new types are added to PowerShell policy types.");
|
|
break;
|
|
}
|
|
|
|
// Set the property if the value is not null
|
|
if (propertyValue != null)
|
|
{
|
|
property.SetValue(tInstance, propertyValue);
|
|
isAnyPropertySet = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// If no property is set, then we consider this policy as undefined
|
|
return isAnyPropertySet ? (T) tInstance : null;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Get a specific kind of policy setting from the group policy registry key.
|
|
/// </summary>
|
|
private static T GetPolicySettingFromGPO<T>(ConfigScope[] preferenceOrder) where T : PolicyBase, new()
|
|
{
|
|
PolicyBase policy = null;
|
|
foreach (ConfigScope scope in preferenceOrder)
|
|
{
|
|
if (InternalTestHooks.BypassGroupPolicyCaching)
|
|
{
|
|
policy = GetPolicySettingFromGPOImpl<T>(scope);
|
|
}
|
|
else
|
|
{
|
|
var key = Tuple.Create(scope, typeof(T).Name);
|
|
if (!s_cachedPoliciesFromRegistry.TryGetValue(key, out policy))
|
|
{
|
|
lock (s_cachedPoliciesFromRegistry)
|
|
{
|
|
policy = s_cachedPoliciesFromRegistry.GetOrAdd(key, tuple => GetPolicySettingFromGPOImpl<T>(tuple.Item1));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (policy != null) { return (T) policy; }
|
|
}
|
|
|
|
return null;
|
|
}
|
|
#endif
|
|
|
|
/// <summary>
|
|
/// Scheduled job module name.
|
|
/// </summary>
|
|
internal const string ScheduledJobModuleName = "PSScheduledJob";
|
|
|
|
internal static void EnsureModuleLoaded(string module, ExecutionContext context)
|
|
{
|
|
if (context != null && !context.AutoLoadingModuleInProgress.Contains(module))
|
|
{
|
|
List<PSModuleInfo> loadedModules = context.Modules.GetModules(new string[] { module }, false);
|
|
|
|
if ((loadedModules == null) || (loadedModules.Count == 0))
|
|
{
|
|
CommandInfo commandInfo = new CmdletInfo("Import-Module", typeof(Microsoft.PowerShell.Commands.ImportModuleCommand),
|
|
null, null, context);
|
|
var importModuleCommand = new System.Management.Automation.Runspaces.Command(commandInfo);
|
|
|
|
context.AutoLoadingModuleInProgress.Add(module);
|
|
|
|
PowerShell ps = null;
|
|
|
|
try
|
|
{
|
|
ps = PowerShell.Create(RunspaceMode.CurrentRunspace)
|
|
.AddCommand(importModuleCommand)
|
|
.AddParameter("Name", module)
|
|
.AddParameter("Scope", StringLiterals.Global)
|
|
.AddParameter("ErrorAction", ActionPreference.Ignore)
|
|
.AddParameter("WarningAction", ActionPreference.Ignore)
|
|
.AddParameter("InformationAction", ActionPreference.Ignore)
|
|
.AddParameter("Verbose", false)
|
|
.AddParameter("Debug", false)
|
|
.AddParameter("PassThru");
|
|
|
|
ps.Invoke<PSModuleInfo>();
|
|
}
|
|
catch (Exception)
|
|
{
|
|
// Call-out to user code, catch-all OK
|
|
}
|
|
finally
|
|
{
|
|
context.AutoLoadingModuleInProgress.Remove(module);
|
|
if (ps != null)
|
|
{
|
|
ps.Dispose();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Returns modules (either loaded or in available) that match pattern <paramref name="module"/>.
|
|
/// Uses Get-Module -ListAvailable cmdlet.
|
|
/// </summary>
|
|
/// <param name="module"></param>
|
|
/// <param name="context"></param>
|
|
/// <returns>
|
|
/// List of PSModuleInfo's or Null.
|
|
/// </returns>
|
|
internal static List<PSModuleInfo> GetModules(string module, ExecutionContext context)
|
|
{
|
|
// first look in the loaded modules and then append the modules from gmo -Listavailable
|
|
// Reason: gmo -li looks only the PSModulepath. There may be cases where a module
|
|
// is imported directly from a path (that is not in PSModulePath).
|
|
List<PSModuleInfo> result = context.Modules.GetModules(new string[] { module }, false);
|
|
|
|
CommandInfo commandInfo = new CmdletInfo("Get-Module", typeof(Microsoft.PowerShell.Commands.GetModuleCommand),
|
|
null, null, context);
|
|
var getModuleCommand = new System.Management.Automation.Runspaces.Command(commandInfo);
|
|
|
|
PowerShell ps = null;
|
|
try
|
|
{
|
|
ps = PowerShell.Create(RunspaceMode.CurrentRunspace)
|
|
.AddCommand(getModuleCommand)
|
|
.AddParameter("Name", module)
|
|
.AddParameter("ErrorAction", ActionPreference.Ignore)
|
|
.AddParameter("WarningAction", ActionPreference.Ignore)
|
|
.AddParameter("Verbose", false)
|
|
.AddParameter("Debug", false)
|
|
.AddParameter("ListAvailable");
|
|
|
|
Collection<PSModuleInfo> gmoOutPut = ps.Invoke<PSModuleInfo>();
|
|
if (gmoOutPut != null)
|
|
{
|
|
if (result == null)
|
|
{
|
|
result = gmoOutPut.ToList<PSModuleInfo>();
|
|
}
|
|
else
|
|
{
|
|
// append to result
|
|
foreach (PSModuleInfo temp in gmoOutPut)
|
|
{
|
|
result.Add(temp);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
catch (Exception)
|
|
{
|
|
// Call-out to user code, catch-all OK
|
|
}
|
|
finally
|
|
{
|
|
if (ps != null)
|
|
{
|
|
ps.Dispose();
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Returns modules (either loaded or in available) that match FullyQualifiedName <paramref name="fullyQualifiedName"/>.
|
|
/// Uses Get-Module -ListAvailable cmdlet.
|
|
/// </summary>
|
|
/// <param name="fullyQualifiedName"></param>
|
|
/// <param name="context"></param>
|
|
/// <returns>
|
|
/// List of PSModuleInfo's or Null.
|
|
/// </returns>
|
|
internal static List<PSModuleInfo> GetModules(ModuleSpecification fullyQualifiedName, ExecutionContext context)
|
|
{
|
|
// first look in the loaded modules and then append the modules from gmo -Listavailable
|
|
// Reason: gmo -li looks only the PSModulepath. There may be cases where a module
|
|
// is imported directly from a path (that is not in PSModulePath).
|
|
List<PSModuleInfo> result = context.Modules.GetModules(new[] { fullyQualifiedName }, false);
|
|
CommandInfo commandInfo = new CmdletInfo("Get-Module", typeof(GetModuleCommand),
|
|
null, null, context);
|
|
var getModuleCommand = new Runspaces.Command(commandInfo);
|
|
|
|
PowerShell ps = null;
|
|
try
|
|
{
|
|
ps = PowerShell.Create(RunspaceMode.CurrentRunspace)
|
|
.AddCommand(getModuleCommand)
|
|
.AddParameter("FullyQualifiedName", fullyQualifiedName)
|
|
.AddParameter("ErrorAction", ActionPreference.Ignore)
|
|
.AddParameter("WarningAction", ActionPreference.Ignore)
|
|
.AddParameter("InformationAction", ActionPreference.Ignore)
|
|
.AddParameter("Verbose", false)
|
|
.AddParameter("Debug", false)
|
|
.AddParameter("ListAvailable");
|
|
|
|
Collection<PSModuleInfo> gmoOutput = ps.Invoke<PSModuleInfo>();
|
|
if (gmoOutput != null)
|
|
{
|
|
if (result == null)
|
|
{
|
|
result = gmoOutput.ToList();
|
|
}
|
|
else
|
|
{
|
|
// append to result
|
|
result.AddRange(gmoOutput);
|
|
}
|
|
}
|
|
}
|
|
catch (Exception)
|
|
{
|
|
// Call-out to user code, catch-all OK
|
|
}
|
|
finally
|
|
{
|
|
if (ps != null)
|
|
{
|
|
ps.Dispose();
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
internal static bool IsAdministrator()
|
|
{
|
|
// Porting note: only Windows supports the SecurityPrincipal API of .NET. Due to
|
|
// advanced privilege models, the correct approach on Unix is to assume the user has
|
|
// permissions, attempt the task, and error gracefully if the task fails due to
|
|
// permissions. To fit into PowerShell's existing model of preemptively checking
|
|
// permissions (which cannot be assumed on Unix), we "assume" the user is an
|
|
// administrator by returning true, thus nullifying this check on Unix.
|
|
#if UNIX
|
|
return true;
|
|
#else
|
|
System.Security.Principal.WindowsIdentity currentIdentity = System.Security.Principal.WindowsIdentity.GetCurrent();
|
|
System.Security.Principal.WindowsPrincipal principal = new System.Security.Principal.WindowsPrincipal(currentIdentity);
|
|
|
|
return principal.IsInRole(System.Security.Principal.WindowsBuiltInRole.Administrator);
|
|
#endif
|
|
}
|
|
|
|
internal static bool ItemExists(string path)
|
|
{
|
|
try
|
|
{
|
|
return ItemExists(path, out bool _);
|
|
}
|
|
catch
|
|
{
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
internal static bool ItemExists(string path, out bool isDirectory)
|
|
{
|
|
isDirectory = false;
|
|
|
|
if (String.IsNullOrEmpty(path))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (IsReservedDeviceName(path))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
try
|
|
{
|
|
// Use 'File.GetAttributes()' because we want to get access exceptions.
|
|
FileAttributes attributes = File.GetAttributes(path);
|
|
isDirectory = attributes.HasFlag(FileAttributes.Directory);
|
|
|
|
return (int)attributes != -1;
|
|
}
|
|
catch (IOException)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
internal static bool FileExists(string path)
|
|
{
|
|
bool itemExists = ItemExists(path, out bool isDirectory);
|
|
|
|
return (itemExists && (!isDirectory));
|
|
}
|
|
|
|
internal static bool DirectoryExists(string path)
|
|
{
|
|
bool itemExists = ItemExists(path, out bool isDirectory);
|
|
|
|
return (itemExists && isDirectory);
|
|
}
|
|
|
|
internal static void NativeEnumerateDirectory(string directory, out List<string> directories, out List<string> files)
|
|
{
|
|
IntPtr INVALID_HANDLE_VALUE = new IntPtr(-1);
|
|
NativeMethods.WIN32_FIND_DATA findData;
|
|
|
|
files = new List<string>();
|
|
directories = new List<string>();
|
|
|
|
IntPtr findHandle;
|
|
|
|
findHandle = NativeMethods.FindFirstFile(directory + "\\*", out findData);
|
|
if (findHandle != INVALID_HANDLE_VALUE)
|
|
{
|
|
do
|
|
{
|
|
if ((findData.dwFileAttributes & NativeMethods.FileAttributes.Directory) != 0)
|
|
{
|
|
if ((!String.Equals(".", findData.cFileName, StringComparison.OrdinalIgnoreCase)) &&
|
|
(!String.Equals("..", findData.cFileName, StringComparison.OrdinalIgnoreCase)))
|
|
{
|
|
directories.Add(directory + "\\" + findData.cFileName);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
files.Add(directory + "\\" + findData.cFileName);
|
|
}
|
|
}
|
|
while (NativeMethods.FindNextFile(findHandle, out findData));
|
|
NativeMethods.FindClose(findHandle);
|
|
}
|
|
}
|
|
|
|
internal static bool IsReservedDeviceName(string destinationPath)
|
|
{
|
|
#if !UNIX
|
|
string[] reservedDeviceNames = { "CON", "PRN", "AUX", "CLOCK$", "NUL",
|
|
"COM0", "COM1", "COM2", "COM3", "COM4", "COM5", "COM6", "COM7", "COM8", "COM9",
|
|
"LPT0", "LPT1", "LPT2", "LPT3", "LPT4", "LPT5", "LPT6", "LPT7", "LPT8", "LPT9" };
|
|
string compareName = Path.GetFileName(destinationPath);
|
|
string noExtensionCompareName = Path.GetFileNameWithoutExtension(destinationPath);
|
|
|
|
// See if it's the correct length. If it's shorter than CON, AUX, etc, it can't be a device name.
|
|
// Likewise, if it's longer than 'CLOCK$', it can't be a device name.
|
|
if (((compareName.Length < 3) || (compareName.Length > 6)) &&
|
|
((noExtensionCompareName.Length < 3) || (noExtensionCompareName.Length > 6)))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
foreach (string deviceName in reservedDeviceNames)
|
|
{
|
|
if (
|
|
String.Equals(deviceName, compareName, StringComparison.OrdinalIgnoreCase) ||
|
|
String.Equals(deviceName, noExtensionCompareName, StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
#endif
|
|
return false;
|
|
}
|
|
|
|
internal static bool PathIsUnc(string path)
|
|
{
|
|
#if UNIX
|
|
return false;
|
|
#else
|
|
Uri uri;
|
|
return !string.IsNullOrEmpty(path) && Uri.TryCreate(path, UriKind.Absolute, out uri) && uri.IsUnc;
|
|
#endif
|
|
}
|
|
|
|
internal class NativeMethods
|
|
{
|
|
private static string EnsureLongPathPrefixIfNeeded(string path)
|
|
{
|
|
if (path.Length >= MAX_PATH && !path.StartsWith(@"\\?\", StringComparison.Ordinal))
|
|
return @"\\?\" + path;
|
|
|
|
return path;
|
|
}
|
|
|
|
[DllImport(PinvokeDllNames.GetFileAttributesDllName, EntryPoint = "GetFileAttributesW", CharSet = CharSet.Unicode, SetLastError = true)]
|
|
private static extern int GetFileAttributesPrivate(string lpFileName);
|
|
|
|
internal static int GetFileAttributes(string fileName)
|
|
{
|
|
fileName = EnsureLongPathPrefixIfNeeded(fileName);
|
|
return GetFileAttributesPrivate(fileName);
|
|
}
|
|
|
|
[Flags]
|
|
internal enum FileAttributes
|
|
{
|
|
Hidden = 0x0002,
|
|
Directory = 0x0010
|
|
}
|
|
|
|
public const int MAX_PATH = 260;
|
|
public const int MAX_ALTERNATE = 14;
|
|
|
|
[StructLayout(LayoutKind.Sequential)]
|
|
public struct FILETIME
|
|
{
|
|
public uint dwLowDateTime;
|
|
public uint dwHighDateTime;
|
|
};
|
|
|
|
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
|
|
public struct WIN32_FIND_DATA
|
|
{
|
|
public FileAttributes dwFileAttributes;
|
|
public FILETIME ftCreationTime;
|
|
public FILETIME ftLastAccessTime;
|
|
public FILETIME ftLastWriteTime;
|
|
public uint nFileSizeHigh; //changed all to uint, otherwise you run into unexpected overflow
|
|
public uint nFileSizeLow; //|
|
|
public uint dwReserved0; //|
|
|
public uint dwReserved1; //v
|
|
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = MAX_PATH)]
|
|
public string cFileName;
|
|
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = MAX_ALTERNATE)]
|
|
public string cAlternate;
|
|
}
|
|
|
|
[DllImport(PinvokeDllNames.FindFirstFileDllName, CharSet = CharSet.Unicode)]
|
|
public static extern IntPtr FindFirstFile(string lpFileName, out WIN32_FIND_DATA lpFindFileData);
|
|
|
|
[DllImport(PinvokeDllNames.FindNextFileDllName, CharSet = CharSet.Unicode)]
|
|
public static extern bool FindNextFile(IntPtr hFindFile, out WIN32_FIND_DATA lpFindFileData);
|
|
|
|
[DllImport(PinvokeDllNames.FindCloseDllName, CharSet = CharSet.Unicode)]
|
|
public static extern bool FindClose(IntPtr hFindFile);
|
|
}
|
|
|
|
internal static readonly string PowerShellAssemblyStrongNameFormat =
|
|
"{0}, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35";
|
|
|
|
internal static readonly HashSet<string> PowerShellAssemblies =
|
|
new HashSet<string>(StringComparer.OrdinalIgnoreCase)
|
|
{
|
|
"microsoft.powershell.commands.diagnostics",
|
|
"microsoft.powershell.commands.management",
|
|
"microsoft.powershell.commands.utility",
|
|
"microsoft.powershell.consolehost",
|
|
"microsoft.powershell.scheduledjob",
|
|
"microsoft.powershell.security",
|
|
"microsoft.wsman.management",
|
|
"microsoft.wsman.runtime",
|
|
"system.management.automation"
|
|
};
|
|
|
|
internal static bool IsPowerShellAssembly(string assemblyName)
|
|
{
|
|
if (!String.IsNullOrWhiteSpace(assemblyName))
|
|
{
|
|
// Remove the '.dll' if it's there...
|
|
var fixedName = assemblyName.EndsWith(".dll", StringComparison.OrdinalIgnoreCase)
|
|
? Path.GetFileNameWithoutExtension(assemblyName)
|
|
: assemblyName;
|
|
|
|
if ((fixedName != null) && PowerShellAssemblies.Contains(fixedName))
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
internal static string GetPowerShellAssemblyStrongName(string assemblyName)
|
|
{
|
|
if (!String.IsNullOrWhiteSpace(assemblyName))
|
|
{
|
|
// Remove the '.dll' if it's there...
|
|
string fixedName = assemblyName.EndsWith(".dll", StringComparison.OrdinalIgnoreCase)
|
|
? Path.GetFileNameWithoutExtension(assemblyName)
|
|
: assemblyName;
|
|
|
|
if ((fixedName != null) && PowerShellAssemblies.Contains(fixedName))
|
|
{
|
|
return string.Format(CultureInfo.InvariantCulture, PowerShellAssemblyStrongNameFormat, fixedName);
|
|
}
|
|
}
|
|
|
|
return assemblyName;
|
|
}
|
|
|
|
/// <summary>
|
|
/// If a mutex is abandoned, in our case, it is ok to proceed
|
|
/// </summary>
|
|
/// <param name="mutex">The mutex to wait on. If it is null, a new one will be created</param>
|
|
/// <param name="initializer">The initializer to use to recreate the mutex.</param>
|
|
/// <returns>A working mutex. If the mutex was abandoned, a new one is created to replace it</returns>
|
|
internal static Mutex SafeWaitMutex(Mutex mutex, MutexInitializer initializer)
|
|
{
|
|
try
|
|
{
|
|
mutex.WaitOne();
|
|
}
|
|
catch (AbandonedMutexException)
|
|
{
|
|
// If the Mutex has been abandoned, then the process protecting the critical section
|
|
// is no longer valid. We need to release to continue normal operations.
|
|
mutex.ReleaseMutex();
|
|
((IDisposable)mutex).Dispose();
|
|
|
|
// Try again, throw if it still fails
|
|
mutex = initializer();
|
|
mutex.WaitOne();
|
|
}
|
|
|
|
return mutex;
|
|
}
|
|
internal delegate Mutex MutexInitializer();
|
|
|
|
internal static bool Succeeded(int hresult)
|
|
{
|
|
return hresult >= 0;
|
|
}
|
|
|
|
// Attempt to determine the existing encoding
|
|
internal static Encoding GetEncoding(string path)
|
|
{
|
|
if (!File.Exists(path))
|
|
{
|
|
return ClrFacade.GetDefaultEncoding();
|
|
}
|
|
|
|
byte[] initialBytes = new byte[100];
|
|
int bytesRead = 0;
|
|
|
|
try
|
|
{
|
|
using (FileStream stream = System.IO.File.OpenRead(path))
|
|
{
|
|
using (BinaryReader reader = new BinaryReader(stream))
|
|
{
|
|
bytesRead = reader.Read(initialBytes, 0, 100);
|
|
}
|
|
}
|
|
}
|
|
catch (IOException)
|
|
{
|
|
return ClrFacade.GetDefaultEncoding();
|
|
}
|
|
|
|
// Test for four-byte preambles
|
|
string preamble = null;
|
|
Encoding foundEncoding = ClrFacade.GetDefaultEncoding();
|
|
|
|
if (bytesRead > 3)
|
|
{
|
|
preamble = String.Join("-", initialBytes[0], initialBytes[1], initialBytes[2], initialBytes[3]);
|
|
|
|
if (encodingMap.TryGetValue(preamble, out foundEncoding))
|
|
{
|
|
return foundEncoding;
|
|
}
|
|
}
|
|
|
|
// Test for three-byte preambles
|
|
if (bytesRead > 2)
|
|
{
|
|
preamble = String.Join("-", initialBytes[0], initialBytes[1], initialBytes[2]);
|
|
if (encodingMap.TryGetValue(preamble, out foundEncoding))
|
|
{
|
|
return foundEncoding;
|
|
}
|
|
}
|
|
|
|
// Test for two-byte preambles
|
|
if (bytesRead > 1)
|
|
{
|
|
preamble = String.Join("-", initialBytes[0], initialBytes[1]);
|
|
if (encodingMap.TryGetValue(preamble, out foundEncoding))
|
|
{
|
|
return foundEncoding;
|
|
}
|
|
}
|
|
|
|
// Check for binary
|
|
string initialBytesAsAscii = System.Text.Encoding.ASCII.GetString(initialBytes, 0, bytesRead);
|
|
if (initialBytesAsAscii.IndexOfAny(nonPrintableCharacters) >= 0)
|
|
{
|
|
return Encoding.Unicode;
|
|
}
|
|
|
|
return Encoding.ASCII;
|
|
}
|
|
|
|
// BigEndianUTF32 encoding is possible, but requires creation
|
|
internal static Encoding BigEndianUTF32Encoding = new UTF32Encoding(bigEndian: true, byteOrderMark: true);
|
|
// [System.Text.Encoding]::GetEncodings() | Where-Object { $_.GetEncoding().GetPreamble() } |
|
|
// Add-Member ScriptProperty Preamble { $this.GetEncoding().GetPreamble() -join "-" } -PassThru |
|
|
// Format-Table -Auto
|
|
internal static Dictionary<String, Encoding> encodingMap =
|
|
new Dictionary<string, Encoding>()
|
|
{
|
|
{ "255-254", Encoding.Unicode },
|
|
{ "254-255", Encoding.BigEndianUnicode },
|
|
{ "255-254-0-0", Encoding.UTF32 },
|
|
{ "0-0-254-255", BigEndianUTF32Encoding },
|
|
{ "239-187-191", Encoding.UTF8 },
|
|
};
|
|
|
|
internal static char[] nonPrintableCharacters = {
|
|
(char) 0, (char) 1, (char) 2, (char) 3, (char) 4, (char) 5, (char) 6, (char) 7, (char) 8,
|
|
(char) 11, (char) 12, (char) 14, (char) 15, (char) 16, (char) 17, (char) 18, (char) 19, (char) 20,
|
|
(char) 21, (char) 22, (char) 23, (char) 24, (char) 25, (char) 26, (char) 28, (char) 29, (char) 30,
|
|
(char) 31, (char) 127, (char) 129, (char) 141, (char) 143, (char) 144, (char) 157 };
|
|
|
|
internal static readonly UTF8Encoding utf8NoBom =
|
|
new UTF8Encoding(encoderShouldEmitUTF8Identifier: false);
|
|
|
|
#if !CORECLR // TODO:CORECLR - WindowsIdentity.Impersonate() is not available. Use WindowsIdentity.RunImpersonated to replace it.
|
|
/// <summary>
|
|
/// Queues a CLR worker thread with impersonation of provided Windows identity.
|
|
/// </summary>
|
|
/// <param name="identityToImpersonate">Windows identity to impersonate or null.</param>
|
|
/// <param name="threadProc">Thread procedure for thread.</param>
|
|
/// <param name="state">Optional state for thread procedure.</param>
|
|
internal static void QueueWorkItemWithImpersonation(
|
|
WindowsIdentity identityToImpersonate,
|
|
WaitCallback threadProc,
|
|
object state)
|
|
{
|
|
object[] args = new object[3];
|
|
args[0] = identityToImpersonate;
|
|
args[1] = threadProc;
|
|
args[2] = state;
|
|
Threading.ThreadPool.QueueUserWorkItem(WorkItemCallback, args);
|
|
}
|
|
|
|
private static void WorkItemCallback(object callBackArgs)
|
|
{
|
|
object[] args = callBackArgs as object[];
|
|
WindowsIdentity identityToImpersonate = args[0] as WindowsIdentity;
|
|
WaitCallback callback = args[1] as WaitCallback;
|
|
object state = args[2];
|
|
|
|
WindowsImpersonationContext impersonationContext = null;
|
|
if ((identityToImpersonate != null) &&
|
|
(identityToImpersonate.ImpersonationLevel == TokenImpersonationLevel.Impersonation))
|
|
{
|
|
impersonationContext = identityToImpersonate.Impersonate();
|
|
}
|
|
try
|
|
{
|
|
callback(state);
|
|
}
|
|
finally
|
|
{
|
|
if (impersonationContext != null)
|
|
{
|
|
try
|
|
{
|
|
impersonationContext.Undo();
|
|
impersonationContext.Dispose();
|
|
}
|
|
catch (System.Security.SecurityException) { }
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/// <summary>
|
|
/// If the command name is fully qualified then it is split into its component parts
|
|
/// E.g., moduleName\commandName
|
|
/// </summary>
|
|
/// <param name="commandName"></param>
|
|
/// <param name="moduleName"></param>
|
|
/// <returns>Command name and as appropriate Module name in out parameter</returns>
|
|
internal static string ParseCommandName(string commandName, out string moduleName)
|
|
{
|
|
var names = commandName.Split(Separators.Backslash, 2);
|
|
if (names.Length == 2)
|
|
{
|
|
moduleName = names[0];
|
|
return names[1];
|
|
}
|
|
|
|
moduleName = null;
|
|
return commandName;
|
|
}
|
|
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
internal static T[] EmptyArray<T>()
|
|
{
|
|
return EmptyArrayHolder<T>._instance;
|
|
}
|
|
|
|
internal static ReadOnlyCollection<T> EmptyReadOnlyCollection<T>()
|
|
{
|
|
return EmptyReadOnlyCollectionHolder<T>._instance;
|
|
}
|
|
|
|
private static class EmptyArrayHolder<T>
|
|
{
|
|
internal static readonly T[] _instance = new T[0];
|
|
}
|
|
|
|
private static class EmptyReadOnlyCollectionHolder<T>
|
|
{
|
|
internal static readonly ReadOnlyCollection<T> _instance =
|
|
new ReadOnlyCollection<T>(EmptyArray<T>());
|
|
}
|
|
|
|
internal static class Separators
|
|
{
|
|
internal static readonly char[] Backslash = new char[] { '\\' };
|
|
internal static readonly char[] Directory = new char[] { '\\', '/' };
|
|
internal static readonly char[] DirectoryOrDrive = new char[] { '\\', '/', ':' };
|
|
|
|
internal static readonly char[] Colon = new char[] { ':' };
|
|
internal static readonly char[] Dot = new char[] { '.' };
|
|
internal static readonly char[] Pipe = new char[] { '|' };
|
|
internal static readonly char[] Comma = new char[] { ',' };
|
|
internal static readonly char[] Semicolon = new char[] { ';' };
|
|
internal static readonly char[] StarOrQuestion = new char[] { '*', '?' };
|
|
internal static readonly char[] ColonOrBackslash = new char[] { '\\', ':' };
|
|
internal static readonly char[] PathSeparator = new char[] { Path.PathSeparator };
|
|
|
|
internal static readonly char[] QuoteChars = new char[] { '\'', '"' };
|
|
internal static readonly char[] Space = new char[] { ' ' };
|
|
internal static readonly char[] QuotesSpaceOrTab = new char[] { ' ', '\t', '\'', '"' };
|
|
internal static readonly char[] SpaceOrTab = new char[] { ' ', '\t' };
|
|
internal static readonly char[] Newline = new char[] { '\n' };
|
|
internal static readonly char[] CrLf = new char[] { '\r', '\n' };
|
|
|
|
// (Copied from System.IO.Path so we can call TrimEnd in the same way that Directory.EnumerateFiles would on the search patterns).
|
|
// Trim trailing white spaces, tabs etc but don't be aggressive in removing everything that has UnicodeCategory of trailing space.
|
|
// String.WhitespaceChars will trim aggressively than what the underlying FS does (for ex, NTFS, FAT).
|
|
internal static readonly char[] PathSearchTrimEnd = { (char)0x9, (char)0xA, (char)0xB, (char)0xC, (char)0xD, (char)0x20, (char)0x85, (char)0xA0 };
|
|
}
|
|
|
|
#if !UNIX
|
|
// This is to reduce the runtime overhead of the feature query
|
|
private static readonly Type ComObjectType = typeof(object).Assembly.GetType("System.__ComObject");
|
|
#endif
|
|
|
|
internal static bool IsComObject(PSObject psObject)
|
|
{
|
|
#if UNIX
|
|
return false;
|
|
#else
|
|
if (psObject == null) { return false; }
|
|
|
|
object obj = PSObject.Base(psObject);
|
|
return IsComObject(obj);
|
|
#endif
|
|
}
|
|
|
|
internal static bool IsComObject(object obj)
|
|
{
|
|
#if UNIX
|
|
return false;
|
|
#else
|
|
// We can't use System.Runtime.InteropServices.Marshal.IsComObject(obj) since it doesn't work in partial trust.
|
|
//
|
|
// There could be strongly typed RWCs whose type is not 'System.__ComObject', but the more specific type should
|
|
// derive from 'System.__ComObject'. The strongly typed RWCs can be created with 'new' operation via the Primay
|
|
// Interop Assembly (PIA).
|
|
// For example, with the PIA 'Microsoft.Office.Interop.Excel', you can write the following code:
|
|
// var excelApp = new Microsoft.Office.Interop.Excel.Application();
|
|
// Type type = excelApp.GetType();
|
|
// Type comObjectType = typeof(object).Assembly.GetType("System.__ComObject");
|
|
// Console.WriteLine("excelApp type: {0}", type.FullName);
|
|
// Console.WriteLine("Is __ComObject assignable from? {0}", comObjectType.IsAssignableFrom(type));
|
|
// and the results are:
|
|
// excelApp type: Microsoft.Office.Interop.Excel.ApplicationClass
|
|
// Is __ComObject assignable from? True
|
|
return obj != null && ComObjectType.IsAssignableFrom(obj.GetType());
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
namespace System.Management.Automation.Internal
|
|
{
|
|
/// <summary>This class is used for internal test purposes.</summary>
|
|
[SuppressMessage("Microsoft.MSInternal", "CA903:InternalNamespaceShouldNotContainPublicTypes", Justification = "Needed Internal use only")]
|
|
public static class InternalTestHooks
|
|
{
|
|
internal static bool BypassGroupPolicyCaching;
|
|
internal static bool ForceScriptBlockLogging;
|
|
internal static bool UseDebugAmsiImplementation;
|
|
internal static bool BypassAppLockerPolicyCaching;
|
|
internal static bool BypassOnlineHelpRetrieval;
|
|
internal static bool ForcePromptForChoiceDefaultOption;
|
|
|
|
// Stop/Restart/Rename Computer tests
|
|
internal static bool TestStopComputer;
|
|
internal static bool TestWaitStopComputer;
|
|
internal static bool TestRenameComputer;
|
|
internal static int TestStopComputerResults;
|
|
internal static int TestRenameComputerResults;
|
|
|
|
// It's useful to test that we don't depend on the ScriptBlock and AST objects and can use a re-parsed version.
|
|
internal static bool IgnoreScriptBlockCache;
|
|
// Simulate 'System.Diagnostics.Stopwatch.IsHighResolution is false' to test Get-Uptime throw
|
|
internal static bool StopwatchIsNotHighResolution;
|
|
internal static bool DisableGACLoading;
|
|
|
|
/// <summary>This member is used for internal test purposes.</summary>
|
|
public static void SetTestHook(string property, object value)
|
|
{
|
|
var fieldInfo = typeof(InternalTestHooks).GetField(property, BindingFlags.Static | BindingFlags.NonPublic);
|
|
if (fieldInfo != null)
|
|
{
|
|
fieldInfo.SetValue(null, value);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// An bounded stack based on a linked list.
|
|
/// </summary>
|
|
internal class BoundedStack<T> : LinkedList<T>
|
|
{
|
|
private readonly int _capacity;
|
|
|
|
/// <summary>
|
|
/// Lazy initialisation, i.e. it sets only its limit but does not allocate the memory for the given capacity.
|
|
/// </summary>
|
|
/// <param name="capacity"></param>
|
|
internal BoundedStack(int capacity)
|
|
{
|
|
_capacity = capacity;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Push item.
|
|
/// </summary>
|
|
/// <param name="item"></param>
|
|
internal void Push(T item)
|
|
{
|
|
this.AddFirst(item);
|
|
|
|
if(this.Count > _capacity)
|
|
{
|
|
this.RemoveLast();
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Pop item.
|
|
/// </summary>
|
|
/// <returns></returns>
|
|
internal T Pop()
|
|
{
|
|
var item = this.First.Value;
|
|
try
|
|
{
|
|
this.RemoveFirst();
|
|
}
|
|
catch (InvalidOperationException)
|
|
{
|
|
throw new InvalidOperationException(SessionStateStrings.BoundedStackIsEmpty);
|
|
}
|
|
return item;
|
|
}
|
|
}
|
|
}
|