TM-ProfileUtility.psm1
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using namespace System using namespace System.Management.Automation function Get-CurrentPath { <# .SYNOPSIS Returns the current location's provider path. .OUTPUTS Returns the ProviderPath except when the current location matches the start to a UNC path. In those cases the $executionContext.SessionState.Path.CurrentLocation.Path is returned instead. #> [CmdletBinding()] [OutputType([string])] param() $ProviderPath = (Get-Location).ProviderPath $result = if ($ProviderPath -match '\\\\') { $executionContext.SessionState.Path.CurrentLocation.Path } else { $ProviderPath } return $result } function Get-LastExecutionDuration { <# .SYNOPSIS Returns the duration of the last executed command. This logic was taken from Steve Lee's powershell profile: https://gist.github.com/SteveL-MSFT/a208d2bd924691bae7ec7904cab0bd8e #> [CmdletBinding()] [OutputType([string])] param($LastCommand = (Get-History -Count 1 -ErrorAction Ignore)) if ($null -ne $LastCommand) { $cmdTime = if ($PSVersionTable.PSEdition -eq 'Desktop') { ($LastCommand.EndExecutionTime - $LastCommand.StartExecutionTime).TotalMilliseconds } else { $LastCommand.Duration.TotalMilliseconds } $units = 'ms' if ($cmdTime -ge 1000) { $units = 's' $cmdTime = $LastCommand.Duration.TotalSeconds if ($cmdTime -ge 60) { $units = 'm' $cmdTIme = $LastCommand.Duration.TotalMinutes } } if ($cmdTime) { return "$($cmdTime.ToString('#.##'))$units " } } return '' } function Get-PSProfileEditionString { <# .SYNOPSIS Returns a formatted string to more easily determine which platform is currently running. #> [CmdletBinding()] [OutputType([string])] param() $Edition = if ($PSVersionTable.PSEdition -eq 'Desktop') { 'PS' } elseif ($PSVersionTable.PSEdition -eq 'Core') { 'Pwsh' + (. {if ($IsLinux) { '-Linux' } elseif ($IsMacOS) { '-MacOS' } }) } elseif ([string]::IsNullOrWhiteSpace($PSVersionTable.PSEdition.ToString()) -eq $false) { $PSVersionTable.PSEdition.ToString() } else { [string]::Empty } return $Edition } function Get-PSVersionString { <# .SYNOPSIS Returns a string containing the PSProfileEditionString and the PSVersion major minor and patch information. #> [CmdletBinding()] [OutputType([string])] param() $Psv = $PSVersionTable.PSVersion return (Get-PSProfileEditionString) +" v$($Psv.Major).$($Psv.Minor).$($Psv.Patch)" } function Get-ShellPath { <# .SYNOPSIS Creates a .shell directory in the users home and returns the directoryinfo object to the user. .DESCRIPTION Creates a .shell directory under the users home directory (or the windows users home directory for WSL) and returns the directoryinfo object to the user. #> [CmdletBinding()] [OutputType([DirectoryInfo])] param() $ShellPath = if ($IsLinux -and [IO.Directory]::Exists("/mnt/c/Users/$env:USER")) { Join-Path -Path "/mnt/c/Users/$env:USER" -ChildPath '.shell' } else { Join-Path -Path (. { if ($env:OS -eq 'Windows_NT') { $HOME } else { $env:HOME } }) -ChildPath '.shell' } # Create the ShellPath if it doesn't exist. return (New-Item -Path $ShellPath -ItemType Directory -Force) } function Initialize-ProfileModule { <# .SYNOPSIS Initialize-ProfileModule attempts to import a module and will automatically install it if it doesn't exist. .PARAMETER Name The name of the module to be imported. .PARAMETER MinimumVersion The minimum version of the module to be imported. Default is '0.0.1'. .PARAMETER AllowPrerelease Allow the import of prerelease module versions. .PARAMETER ArgumentList The ArgumentList passed into the Import-Module command. #> [CmdletBinding()] [OutputType([Void])] param ( [Parameter(Mandatory)] [string[]]$Names, [Parameter(Mandatory=$false)] [string]$MinimumVersion = '0.0.1', [Parameter(Mandatory=$false)] [switch]$AllowPrerelease, [Parameter(Mandatory=$false)] [string[]]$ArgumentList = @() ) begin { $Scope = if (Test-Admin) { 'AllUsers' } else { 'CurrentUser' } $Verbose = if ($PSBoundParameters.ContainsKey('Verbose')) { $PSBoundParameters['Verbose'] } else { $false } # Fix missing PSGet versions on windows. $PSGet = 'PowerShellGet' $PSGV = '2.2.5' if ( ($env:OS -eq 'Windows_NT') -and ($null -eq (Get-Module -Name $PSGet -ListAvailable | Where-Object {$_.Version -eq $PSGV})) ) { # Start the update in another process so that we don't have issues with clobbering. $PSApp = if ($IsWindows) { 'pwsh.exe' } else { 'powershell.exe' } $InstallPSGet = ( "Install-Module -Name ""$PSGet"" " + "-RequiredVersion ""$PSGV"" " + "-Scope ""$Scope"" " + '-Repository "PSGallery" ' + '-AllowClobber ' + '-Force' ) if ($Verbose) { $InstallPSGet += ' -Verbose' } Start-Process -FilePath $PSApp -ArgumentList '-noprofile', '-c', $InstallPSGet -Wait -NoNewWindow } } process { foreach ($moduleName in $Names){ $InstallModule = @{ Name = $moduleName MinimumVersion = $MinimumVersion AllowPrerelease = $AllowPrerelease Scope = $Scope Repository = 'PSGallery' AcceptLicense = $true Force = $true Verbose = $Verbose } $ImportModuleParams = @{ Name = $moduleName MinimumVersion = $MinimumVersion Scope = 'Global' Verbose = $Verbose } if ($ArgumentList.Length -gt 0) { $ImportModuleParams.Add('ArgumentList', $ArgumentList) } try { Import-Module @ImportModuleParams -ErrorAction Stop } catch [FileNotFoundException] { Install-Module @InstallModule Import-Module @ImportModuleParams } } } } function New-UserProcessEnvVar { <# .SYNOPSIS Creates a new environment variable with a value of the current datetime. .PARAMETER VarName The name of the new environment variable to create. .PARAMETER Value The value to put into the environment variable. #> [CmdletBinding()] [OutputType([Void])] param ( [Parameter(Mandatory)] [string]$VarName, [Parameter(Mandatory = $false)] [string]$Value = [DateTime]::Now ) [Environment]::SetEnvironmentVariable( $VarName, $Value, [EnvironmentVariableTarget]::User ) [Environment]::SetEnvironmentVariable( $VarName, $Value, [EnvironmentVariableTarget]::Process ) } function Set-ProfileLinks { <# .SYNOPSIS This function consolidates all editions of your PowerShell profile by linking them to a common profile file located at the specified $ShellPath. Any changes made to this profile script will apply across all your PowerShell sessions and editions. .DESCRIPTION This function is meant to be used with the profile script found here: https://gist.github.com/tsmarvin/3ec5df59e030886a9f81a693ba01f785 The function begins by checking for the ProfileLink environment variable: ((Get-PSProfileEditionString) + '_UpdateProfileLinks') If the environment variable exists, the function exits without performing any actions. If the environment variable does not exist: On Windows: First determine whether the $CommandPath is hardlinked to the $ShellProfile ($ShellPath + profile.ps1) file. If it is not hardlinkd, prompt the user to create a new hardlink between the files. All Platforms: The function checks if the $CommandPath is linked to the $Profile.CurrentUserAllHosts script. If the $Profile.CurrentUserAllHosts script doesn't exist, prompt the user to create a new link. On Linux, a symbolic link will be created, while on Windows, a hardlink will be used instead. Finally, the function creates the ProfileLink environment variable and sets it to the current date and time. .PARAMETER ShellPath This parameter specifies the path to the directory where the shell profile script ('profile.ps1') is located. .PARAMETER PSProfileEdition This parameter represents the PowerShell edition, as determined by the PowerShell Profile script. .PARAMETER CommandPath This parameter is used to specify the path of the currently executing script. #> [CmdletBinding()] [OutputType([void])] param ( [Parameter(Mandatory)] [string]$CommandPath ) # The path to the shell profile script $ShellProfile = Join-Path -Path (Get-ShellPath).FullName -ChildPath 'profile.ps1' # The name of the environment variable storing the status of profile linking $ProfileLink = (Get-PSProfileEditionString) + '_UpdateProfileLinks' # Check if the ProfileLink environment variable is empty if ([string]::IsNullOrEmpty((Get-Item -Path "Env:\$ProfileLink" -ErrorAction Ignore).Value)) { # If the operating system is Windows and the executing script is not linked to the shell profile script if ( ($env:OS -eq 'Windows_NT') -and ( ($null -eq (Get-Item -Path $CommandPath).Target) -or ((Get-Item -Path $ShellProfile -ErrorAction Ignore).Target -notcontains $CommandPath) ) ) { # Parameters for creating a new hard link $NewHardLinkParams = [hashtable]@{ ItemType = 'HardLink' Force = $true Verbose = $true } # If the current executing script is not the same as the shell profile script if ($CommandPath -ne $ShellProfile) { Write-Warning ( "Currently executing profile script '$CommandPath' " + "has not been linked to the ShellProfile '$ShellProfile'." ) # Prompt the user to link the current executing script to the shell profile script if ((Read-Host "Link '$CommandPath' to '$ShellProfile'? (Y/N)") -ieq 'Y') { New-Item -Path $ShellProfile -Value $CommandPath @NewHardLinkParams | Out-Null } } if <# the $Profile.CurrentUserAllHosts is not linked to the shell profile script #> ( ($null -eq (Get-Item -Path $Profile.CurrentUserAllHosts -ErrorAction Ignore).Target) -and ((Resolve-Path -Path $CommandPath) -eq (Resolve-Path -Path $ShellProfile)) ) { Write-Warning ( "Profile script '$($Profile.CurrentUserAllHosts)' " + "has not been linked to the ShellProfile '$ShellProfile'." ) # Prompt the user to link the profile for all hosts of the current user to the shell profile script if ((Read-Host "Link '$($Profile.CurrentUserAllHosts)' to '$ShellProfile'? (Y/N)") -ieq 'Y') { New-Item -Path $Profile.CurrentUserAllHosts -Value $ShellProfile @NewHardLinkParams | Out-Null } } } # If the $Profile.CurrentUserAllHosts script doesn't exist then link it to the shell profile. if ($null -eq (Get-Item -Path $Profile.CurrentUserAllHosts -ErrorAction Ignore)) { Write-Warning "PowerShell Profile '$($Profile.CurrentUserAllHosts)' does not exist." $LinkProfilePrompt = (. { "$(if ($env:OS -eq 'Windows_NT') { 'Hard' } else { 'Symbolic' })" + "Link '$($Profile.CurrentUserAllHosts)' to '$ShellProfile'? (Y/N)" }) # Prompt the user to link the profile for all hosts of the current user to the shell profile script if ((Read-Host -Prompt $LinkProfilePrompt) -ieq 'Y') { $newItemSplat = @{ Path = $Profile.CurrentUserAllHosts ItemType = "$(if ($env:OS -eq 'Windows_NT') { 'HardLink' } else { 'SymbolicLink' })" Value = $ShellProfile Force = $true Verbose = $true ErrorAction = 'Stop' } try { New-Item @newItemSplat | Out-Null } catch { Write-Warning ( "Failed to create link between '$($Profile.CurrentUserAllHosts)' and '$ShellProfile'. " + "Error: $($_.Exception.Message)" ) break # Don't run ProfileLinkCreation } } } # Create the ProfileLink environment variable with the current date and time New-UserProcessEnvVar -VarName $ProfileLink } } function Set-WindowTitle { <# .SYNOPSIS Sets the window title based on the current PowerShell session and provider. .DESCRIPTION Updates the window title with the PowerShell version, provider name, and adds an [Admin] prefix if the session is running with administrative privileges. #> [CmdletBinding()] [OutputType([Void])] param() try { $AdminText = if (Test-Admin) { '[Admin] ' } else { [string]::Empty } $Host.Ui.RawUi.WindowTitle = "$AdminText$(Get-PSVersionString) [$($pwd.Provider.Name)]" } catch { <# Do Not Fail #> } } function Test-Admin { <# .SYNOPSIS Tests to determine if the user is running the powershell process as an admin. .DESCRIPTION On Windows, checks the security group to determine if the user is a member of the local admin group. On Linux, checks to see if the user is root, or has sudo enabled. On MacOs, always returns false at this time. #> [CmdletBinding()] [OutputType([boolean])] param() $IsAdmin = if ($env:OS -eq 'Windows_NT') { [Security.Principal.WindowsPrincipal]::New( [Security.Principal.WindowsIdentity]::GetCurrent() ).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator) } elseif ($IsLinux -and (($env:USER -ieq 'root') -or ([string]::IsNullOrWhiteSpace($env:SUDO_USER) -eq $false))) { $true } else { $false } return $IsAdmin } function Update-ProfileScriptFromGist { <# .SYNOPSIS Update the profile script every 25+ hours. .DESCRIPTION Update-ProfileScriptFromGist checks the last update time from the environment variable 'ProfileGistUpdate'. If it has been more than a 25 hours since the last update, the function starts a new job that updates the profile script. This function is meant to be used with the profile script found here: https://gist.github.com/tsmarvin/3ec5df59e030886a9f81a693ba01f785 .PARAMETER CommandPath The path to the PowerShell profile script. #> [CmdletBinding()] [OutputType([Job],[string])] param ( [Parameter(Mandatory)] [string]$CommandPath, [Parameter(Mandatory=$false)] [int]$UpdateIntervalHours = 25 ) $EnvVarName = 'ProfileGistUpdate' $EnvVarValue = (Get-Item -Path "Env:\$EnvVarName" -ErrorAction Ignore).Value $UpdateTime = if ([string]::IsNullOrWhiteSpace($EnvVarValue) -eq $false) { [DateTime]::Parse($EnvVarValue) } else { [DateTime]::Now.AddHours(-$UpdateIntervalHours) } $result = if ($UpdateTime.AddDays(1) -lt [DateTime]::Now) { Start-BackgroundGistScriptUpdate New-UserProcessEnvVar -VarName $EnvVarName } else { [string]::Empty } return $result } if ($IsWindows) { # Add Support for retrieving hardlink definitions on windows using dotnet core. # Recreates the "Target" property with integrated hardlink support which emulates Windows PowerShell functionality. # This c# code was based on https://github.com/PowerShell/PowerShell/issues/15139#issuecomment-812567971 # This functionality is specifically used by Set-ProfileLinks - but its also just nice to have in general. $AddWinUtilNTFS = [hashtable]@{ Name = 'NTFS' Namespace = 'WinUtil' UsingNamespace = 'System.Text', 'System.Collections.Generic', 'System.IO' MemberDefinition = @' #nullable enable #region WinAPI P/Invoke declarations public static readonly IntPtr INVALID_HANDLE_VALUE = (IntPtr)(-1); // 0xffffffff; public const int MAX_PATH = 65535; // Max. NTFS path length. [DllImport("kernel32.dll", CharSet = CharSet.Unicode, SetLastError = true)] static extern IntPtr FindFirstFileNameW( string lpFileName, uint dwFlags, ref uint StringLength, StringBuilder LinkName ); [DllImport("kernel32.dll", CharSet = CharSet.Unicode, SetLastError = true)] static extern bool FindNextFileNameW( IntPtr hFindStream, ref uint StringLength, StringBuilder LinkName ); [DllImport("kernel32.dll", SetLastError = true)] static extern bool FindClose(IntPtr hFindFile); [DllImport("kernel32.dll", CharSet = CharSet.Unicode, SetLastError = true)] static extern bool GetVolumePathName( string lpszFileName, [Out] StringBuilder lpszVolumePathName, uint cchBufferLength ); #endregion /// <summary> /// Returns the enumeration of hardlinks for the given filepath excluding the input file itself. /// </summary> /// <param name="filePath"></param> /// <returns> /// If the file has one or more hardlink (including itself) then the enumerate hardlinks (excluding itself) /// are returned. <br/> /// /// This means that if the hardlink only links to itself then you will receive an empty array. <br/> /// /// If the target volume doesn't support enumerating hardlinks, the filePath doesn't exist, or the filePath /// is the path to a directory than a null value is returned instead. /// </returns> public static string[]? GetHardLinks(string filePath) { string fullFilePath = Path.GetFullPath(filePath); // If the filepath is a directory or the file does not exist then return early. if (Directory.Exists(fullFilePath) || File.Exists(fullFilePath) == false) { return null; } // Generate Volume Path StringBuilder sbPath = new(MAX_PATH); _ = GetVolumePathName(fullFilePath, sbPath, MAX_PATH); // Get target file volume (e.g. "C:\") // Trim the trailing "\" from the volume path, to enable simple concatenation with the volume-relative // paths returned by the FindFirstFileNameW() and FindFirstFileNameW() functions, which have a leading "\" string volume = sbPath.ToString()[..(sbPath.Length > 0 ? sbPath.Length - 1 : 0)]; // Loop over and collect all hard links as their full paths. uint charCount = MAX_PATH; // in/out character-count variable for the WinAPI calls. IntPtr findHandle; if (INVALID_HANDLE_VALUE != (findHandle = FindFirstFileNameW(fullFilePath, 0, ref charCount, sbPath))) { List<string> result = new(); // Add each non-self path to the results list do { string fullHardlinkPath = volume + sbPath.ToString(); if (fullHardlinkPath.Equals(fullFilePath, StringComparison.OrdinalIgnoreCase) == false) { result.Add(fullHardlinkPath); // Add the full path to the result list. } charCount = MAX_PATH; // Prepare for the next FindNextFileNameW() call. } while (FindNextFileNameW(findHandle, ref charCount, sbPath)); FindClose(findHandle); return result.ToArray(); } return null; } #nullable disable '@ } Add-Type @AddWinUtilNTFS Update-TypeData -Force -TypeName System.IO.FileInfo -MemberName Target -MemberType ScriptProperty -Value { # Output the target, if the file at hand is a symbolic link (reparse point). [string[]]$local:TempTarget = [InternalSymbolicLinkLinkCodeMethods]::GetTarget($this) if ($local:TempTarget) { , [string[]]$local:TempTarget } else { [string[]]$local:TempHardlinks = [WinUtil.NTFS]::GetHardLinks($this.FullName) if ($null -ne $local:TempHardlinks -and $local:TempHardlinks.Length -gt 0) { , [string[]]$local:TempHardlinks } } } } |