File size: 5,613 Bytes
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// Licensed under the MIT License.
using System;
using System.IO;
using System.Management.Automation;
using System.Management.Automation.Host;
using System.Management.Automation.Internal;
using System.Security;
namespace Microsoft.PowerShell
{
internal static class SecurityUtils
{
/// <summary>
/// Gets the size of a file.
/// </summary>
/// <param name="filePath">Path to file.</param>
/// <returns>File size.</returns>
internal static long GetFileSize(string filePath)
{
long size = 0;
using (FileStream fs = new(filePath, FileMode.Open))
{
size = fs.Length;
}
return size;
}
/// <summary>
/// Present a prompt for a SecureString data.
/// </summary>
/// <param name="hostUI">Ref to host ui interface.</param>
/// <param name="prompt">Prompt text.</param>
/// <returns> user input as secure string.</returns>
internal static SecureString PromptForSecureString(PSHostUserInterface hostUI,
string prompt)
{
SecureString ss = null;
hostUI.Write(prompt);
ss = hostUI.ReadLineAsSecureString();
hostUI.WriteLine(string.Empty);
return ss;
}
/// <summary>
/// </summary>
/// <param name="resourceStr">Resource string.</param>
/// <param name="errorId">Error identifier.</param>
/// <param name="args">Replacement params for resource string formatting.</param>
/// <returns></returns>
internal static
ErrorRecord CreateFileNotFoundErrorRecord(string resourceStr,
string errorId,
params object[] args)
{
string message =
StringUtil.Format(
resourceStr,
args
);
FileNotFoundException e = new(message);
ErrorRecord er = new(
e,
errorId,
ErrorCategory.ObjectNotFound,
targetObject: null);
return er;
}
/// <summary>
/// </summary>
/// <param name="path">Path that was not found.</param>
/// <param name="errorId">Error identifier.</param>
/// <returns>ErrorRecord instance.</returns>
internal static
ErrorRecord CreatePathNotFoundErrorRecord(string path,
string errorId)
{
ItemNotFoundException e = new(path, "PathNotFound", SessionStateStrings.PathNotFound);
ErrorRecord er = new(
e,
errorId,
ErrorCategory.ObjectNotFound,
targetObject: null);
return er;
}
/// <summary>
/// Create an error record for 'operation not supported' condition.
/// </summary>
/// <param name="resourceStr">Resource string.</param>
/// <param name="errorId">Error identifier.</param>
/// <param name="args">Replacement params for resource string formatting.</param>
/// <returns></returns>
internal static
ErrorRecord CreateNotSupportedErrorRecord(string resourceStr,
string errorId,
params object[] args)
{
string message = StringUtil.Format(resourceStr, args);
NotSupportedException e = new(message);
ErrorRecord er = new(
e,
errorId,
ErrorCategory.NotImplemented,
targetObject: null);
return er;
}
/// <summary>
/// Create an error record for 'operation not supported' condition.
/// </summary>
/// <param name="e">Exception to include in ErrorRecord.</param>
/// <param name="errorId">Error identifier.</param>
/// <returns></returns>
internal static
ErrorRecord CreateInvalidArgumentErrorRecord(Exception e,
string errorId)
{
ErrorRecord er = new(
e,
errorId,
ErrorCategory.InvalidArgument,
targetObject: null);
return er;
}
/// <summary>
/// Convert the specified provider path to a provider path
/// and make sure that all of the following is true:
/// -- it represents a FileSystem path
/// -- it points to a file
/// -- the file exists.
/// </summary>
/// <param name="cmdlet">Cmdlet instance.</param>
/// <param name="path">Provider path.</param>
/// <returns>
/// filesystem path if all conditions are true,
/// null otherwise
/// </returns>
internal static string GetFilePathOfExistingFile(PSCmdlet cmdlet,
string path)
{
string resolvedProviderPath = cmdlet.SessionState.Path.GetUnresolvedProviderPathFromPSPath(path);
if (File.Exists(resolvedProviderPath))
{
return resolvedProviderPath;
}
else
{
return null;
}
}
}
}
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