completers/pspasswd_completer/pspasswd_completer.ps1
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# pspasswd tab completion for PowerShell # Static native completer for PsPasswd with safe remote and account placeholders. Set-StrictMode -Version 2.0 function New-PsPasswdCompletionResult { param([string]$CompletionText, [string]$ResultType, [string]$ToolTip, [string]$ListItemText) if ([string]::IsNullOrWhiteSpace($ListItemText)) { $ListItemText = $CompletionText } if ([string]::IsNullOrWhiteSpace($ToolTip)) { $ToolTip = $CompletionText } [System.Management.Automation.CompletionResult]::new($CompletionText, $ListItemText, $ResultType, $ToolTip) } function Get-PsPasswdCurrentToken { param([string]$Line, [int]$CursorPosition, [string]$Fallback) if ([string]::IsNullOrWhiteSpace($Line)) { return $Fallback } $safeCursor = [Math]::Min([Math]::Max($CursorPosition, 0), $Line.Length) $prefix = $Line.Substring(0, $safeCursor) if ($prefix -match '\s$') { return '' } $parts = @([regex]::Matches($prefix, '"[^"]*"|\S+') | ForEach-Object { $_.Value }) if ($parts.Count -gt 0) { return $parts[-1] } $Fallback } function Remove-PsPasswdOuterQuotes { param([string]$Value) if ([string]::IsNullOrEmpty($Value)) { return '' } if ($Value.Length -ge 2 -and $Value.StartsWith('"') -and $Value.EndsWith('"')) { return $Value.Substring(1, $Value.Length - 2) } $Value.TrimStart('"') } function ConvertTo-PsPasswdQuotedValue { param([string]$Value, [bool]$AlwaysQuote = $false) if ([string]::IsNullOrWhiteSpace($Value)) { return $Value } if (($AlwaysQuote -or $Value -match '\s') -and -not ($Value.StartsWith('"') -and $Value.EndsWith('"'))) { return '"' + $Value.Replace('`', '``').Replace('"', '`"') + '"' } $Value } function Get-PsPasswdArgumentState { param([System.Management.Automation.Language.CommandAst]$CommandAst, [string]$WordToComplete, [int]$CursorPosition) # $CursorPosition is line-absolute; the extent text is command-relative. $relativeCursor = [Math]::Max(0, $CursorPosition - $CommandAst.Extent.StartOffset) $currentWord = if ([string]::IsNullOrEmpty($WordToComplete)) { '' } else { Get-PsPasswdCurrentToken -Line $CommandAst.Extent.Text -CursorPosition $relativeCursor -Fallback $WordToComplete } # Only elements that end at or before the cursor are established state; a token to the # right of the caret must not be consumed as the Account or NewPassword positional. $tokens = @($CommandAst.CommandElements | Select-Object -Skip 1 | Where-Object { $_.Extent.EndOffset -le $CursorPosition } | ForEach-Object { $_.Extent.Text }) $tokensBeforeCurrent = @($tokens) if (-not [string]::IsNullOrEmpty($currentWord) -and $tokensBeforeCurrent.Count -gt 0 -and $tokensBeforeCurrent[-1] -eq $currentWord) { $tokensBeforeCurrent = @($tokensBeforeCurrent | Select-Object -First ($tokensBeforeCurrent.Count - 1)) } [pscustomobject]@{ CurrentWord = $currentWord TokensBeforeCurrent = $tokensBeforeCurrent } } function Get-PsPasswdAtFileCompletions { param([string]$CurrentWord) $trimmed = Remove-PsPasswdOuterQuotes -Value $CurrentWord if (-not $trimmed.StartsWith('@')) { return @() } $pathPortion = $trimmed.Substring(1) if ([string]::IsNullOrWhiteSpace($pathPortion)) { $parent = '.' $leaf = '' } else { $parent = Split-Path -Path $pathPortion -Parent if ([string]::IsNullOrWhiteSpace($parent)) { $parent = '.' } $leaf = Split-Path -Path $pathPortion -Leaf } $filter = if ([string]::IsNullOrWhiteSpace($leaf)) { '*' } else { "$leaf*" } $alwaysQuote = -not [string]::IsNullOrEmpty($CurrentWord) -and $CurrentWord.StartsWith('"') $results = foreach ($item in @(Get-ChildItem -Path $parent -Filter $filter -ErrorAction SilentlyContinue)) { $completionPath = if ($pathPortion -and -not [System.IO.Path]::IsPathRooted($pathPortion) -and $parent -ne '.') { Join-Path -Path $parent -ChildPath $item.Name } elseif ($parent -eq '.') { $item.Name } else { $item.FullName } if ($item.PSIsContainer -and -not $completionPath.EndsWith([System.IO.Path]::DirectorySeparatorChar)) { $completionPath += [System.IO.Path]::DirectorySeparatorChar } New-PsPasswdCompletionResult -CompletionText (ConvertTo-PsPasswdQuotedValue -Value ('@' + $completionPath) -AlwaysQuote:$alwaysQuote) -ListItemText ('@' + $item.Name) -ResultType 'ParameterValue' -ToolTip 'File containing remote computer names for @file syntax.' } if (@($results).Count -eq 0) { return @(New-PsPasswdCompletionResult -CompletionText $(if ([string]::IsNullOrWhiteSpace($CurrentWord)) { '@file' } else { $CurrentWord }) -ResultType 'ParameterValue' -ToolTip 'File containing remote computer names for @file syntax.') } @($results) } function Complete-PsPasswd { param( [string]$WordToComplete, [System.Management.Automation.Language.CommandAst]$CommandAst, [int]$CursorPosition ) $state = Get-PsPasswdArgumentState -CommandAst $CommandAst -WordToComplete $WordToComplete -CursorPosition $CursorPosition $currentWord = $state.CurrentWord $tokensBeforeCurrent = @($state.TokensBeforeCurrent) $used = @{} $valueContext = $null $remoteTarget = $null $account = $null $newPassword = $null for ($i = 0; $i -lt $tokensBeforeCurrent.Count; $i++) { $token = $tokensBeforeCurrent[$i] $lowerToken = $token.ToLowerInvariant() if ($lowerToken -eq '-u') { $used['-u'] = $true; if ($i -eq ($tokensBeforeCurrent.Count - 1)) { $valueContext = 'User'; break }; $i++; continue } if ($lowerToken -eq '-p') { $used['-p'] = $true; if ($i -eq ($tokensBeforeCurrent.Count - 1)) { $valueContext = 'Password'; break }; $i++; continue } if ($lowerToken -eq '-nobanner') { $used['-nobanner'] = $true; continue } if ($lowerToken -eq '-accepteula') { $used['-accepteula'] = $true; continue } if ($lowerToken -eq '-?') { $used['-?'] = $true; continue } if ($lowerToken -eq '/?') { $used['/?'] = $true; continue } if (-not $remoteTarget -and ((Remove-PsPasswdOuterQuotes -Value $token).StartsWith('\\') -or (Remove-PsPasswdOuterQuotes -Value $token).StartsWith('@'))) { $remoteTarget = $token continue } if (-not $account) { $account = $token; continue } if (-not $newPassword) { $newPassword = $token } } switch ($valueContext) { 'User' { return @( New-PsPasswdCompletionResult -CompletionText '<username>' -ResultType 'ParameterValue' -ToolTip 'Remote user name.' New-PsPasswdCompletionResult -CompletionText '<domain\user>' -ResultType 'ParameterValue' -ToolTip 'Remote user name in Domain\User syntax.' ) } 'Password' { return @(New-PsPasswdCompletionResult -CompletionText $(if ([string]::IsNullOrWhiteSpace($currentWord)) { '<password>' } else { $currentWord }) -ResultType 'ParameterValue' -ToolTip 'Remote password value.') } } if ($currentWord.StartsWith('@') -or $currentWord.StartsWith('"@')) { return Get-PsPasswdAtFileCompletions -CurrentWord $currentWord } if ($account -and -not $newPassword) { return @(New-PsPasswdCompletionResult -CompletionText $(if ([string]::IsNullOrWhiteSpace($currentWord)) { '<new-password>' } else { $currentWord }) -ResultType 'ParameterValue' -ToolTip 'New password. Completion intentionally does not enumerate or transform secrets.') } # pspasswd [\\computer|@file] [-u Username [-p Password]] <Account> [NewPassword]: nothing follows NewPassword. if ($account -and $newPassword) { return @() } $results = New-Object System.Collections.Generic.List[object] if (-not $remoteTarget) { foreach ($target in @('\\<computer>', '\\localhost', '\\*', '@file')) { if ([string]::IsNullOrWhiteSpace($currentWord) -or $target.StartsWith((Remove-PsPasswdOuterQuotes -Value $currentWord), [System.StringComparison]::OrdinalIgnoreCase)) { [void]$results.Add((New-PsPasswdCompletionResult -CompletionText $target -ResultType 'ParameterValue' -ToolTip 'Remote target placeholder for local-account password changes.')) } } } foreach ($switchSpec in @( @{ Token = '-u'; Description = 'Optional user name for remote login.'; NeedsRemote = $true; BeforeAccount = $true } @{ Token = '-p'; Description = 'Optional password for remote login.'; NeedsRemote = $true; BeforeAccount = $true } @{ Token = '-nobanner'; Description = 'Do not display the startup banner and copyright message.' } @{ Token = '-accepteula'; Description = 'Suppress the Sysinternals EULA dialog on first run.' } @{ Token = '-?'; Description = 'Display PsPasswd help.' } @{ Token = '/?'; Description = 'Display PsPasswd help.' } )) { if ($used.ContainsKey($switchSpec.Token.ToLowerInvariant())) { continue } if ($switchSpec.ContainsKey('NeedsRemote') -and $switchSpec.NeedsRemote -and -not $remoteTarget) { continue } if ($switchSpec.ContainsKey('BeforeAccount') -and $switchSpec.BeforeAccount -and $account) { continue } if (-not [string]::IsNullOrWhiteSpace($currentWord) -and -not $switchSpec.Token.StartsWith($currentWord, [System.StringComparison]::OrdinalIgnoreCase)) { continue } [void]$results.Add((New-PsPasswdCompletionResult -CompletionText $switchSpec.Token -ResultType 'ParameterName' -ToolTip $switchSpec.Description)) } if (-not $account) { foreach ($hint in @('<account>', '<domain\account>', 'Administrator', 'CONTOSO\User')) { if ([string]::IsNullOrWhiteSpace($currentWord) -or $hint.StartsWith((Remove-PsPasswdOuterQuotes -Value $currentWord), [System.StringComparison]::OrdinalIgnoreCase)) { [void]$results.Add((New-PsPasswdCompletionResult -CompletionText $hint -ResultType 'ParameterValue' -ToolTip 'Local account or domain account placeholder.')) } } } @($results.ToArray()) } Register-ArgumentCompleter -Native -CommandName @('pspasswd', 'pspasswd.exe') -ScriptBlock { param($wordToComplete, $commandAst, $cursorPosition) Complete-PsPasswd -WordToComplete $wordToComplete -CommandAst $commandAst -CursorPosition $cursorPosition } |