PowerShell/tools/install-powershell.ps1
Guillaume Lachance 80cabc4f28 AddToPath re-implementation in install-powershell.ps1 (#8081)
This PR is a re-implementation of the -AddToPath switch in tools/install-powershell.ps1, without the side-effects the current implementation has.  The changes only affects windows users.
2019-01-17 14:25:01 -08:00

416 lines
17 KiB
PowerShell

# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License.
<#
.Synopsis
Install PowerShell Core on Windows, Linux or macOS.
.DESCRIPTION
By default, the latest PowerShell Core release package will be installed.
If '-Daily' is specified, then the latest PowerShell Core daily package will be installed.
.Parameter Destination
The destination path to install PowerShell Core to.
.Parameter Daily
Install PowerShell Core from the daily build.
Note that the 'PackageManagement' module is required to install a daily package.
.Parameter DoNotOverwrite
Do not overwrite the destination folder if it already exists.
.Parameter AddToPath
On Windows, add the absolute destination path to the 'User' scope environment variable 'Path';
On Linux, make the symlink '/usr/bin/pwsh' points to "$Destination/pwsh";
On MacOS, make the symlink '/usr/local/bin/pwsh' points to "$Destination/pwsh".
#>
[CmdletBinding(DefaultParameterSetName = "Daily")]
param(
[Parameter(ParameterSetName = "Daily")]
[string] $Destination,
[Parameter(ParameterSetName = "Daily")]
[switch] $Daily,
[Parameter(ParameterSetName = "Daily")]
[switch] $DoNotOverwrite,
[Parameter(ParameterSetName = "Daily")]
[switch] $AddToPath,
[Parameter(ParameterSetName = "MSI")]
[switch] $UseMSI,
[Parameter(ParameterSetName = "MSI")]
[switch] $Quiet,
[Parameter()]
[switch] $Preview
)
Set-StrictMode -Version latest
$ErrorActionPreference = "Stop"
$IsLinuxEnv = (Get-Variable -Name "IsLinux" -ErrorAction Ignore) -and $IsLinux
$IsMacOSEnv = (Get-Variable -Name "IsMacOS" -ErrorAction Ignore) -and $IsMacOS
$IsWinEnv = !$IsLinuxEnv -and !$IsMacOSEnv
if (-not $Destination) {
if ($IsWinEnv) {
$Destination = "$env:LOCALAPPDATA\Microsoft\powershell"
} else {
$Destination = "~/.powershell"
}
if ($Daily) {
$Destination = "${Destination}-daily"
}
}
$Destination = $PSCmdlet.SessionState.Path.GetUnresolvedProviderPathFromPSPath($Destination)
if (-not $UseMSI) {
Write-Verbose "Destination: $Destination" -Verbose
} else {
if (-not $IsWinEnv) {
throw "-UseMSI is only supported on Windows"
}
}
Function Remove-Destination([string] $Destination) {
if (Test-Path -Path $Destination) {
if ($DoNotOverwrite) {
throw "Destination folder '$Destination' already exist. Use a different path or omit '-DoNotOverwrite' to overwrite."
}
Write-Verbose "Removing old installation: $Destination" -Verbose
if (Test-Path -Path "$Destination.old") {
Remove-Item "$Destination.old" -Recurse -Force
}
if ($IsWinEnv -and ($Destination -eq $PSHome)) {
# handle the case where the updated folder is currently in use
Get-ChildItem -Recurse -File -Path $PSHome | ForEach-Object {
if ($_.extension -eq "old") {
Remove-Item $_
} else {
Move-Item $_.fullname "$($_.fullname).old"
}
}
} else {
# Unix systems don't keep open file handles so you can just move files/folders even if in use
Move-Item "$Destination" "$Destination.old"
}
}
}
<#
.Synopsis
Parameter validation for Add-PathTToSettingsToSettings.
.DESCRIPTION
Validates that the parameter being validated:
- is not null
- is a folder and exists
- and that it does not exist in settings where settings is:
= the process PATH for Linux/OSX
- the registry PATHs for Windows
#>
class ValidatePathNotInSettingsAttribute : System.Management.Automation.ValidateArgumentsAttribute {
[void] Validate([object] $Arguments, [System.Management.Automation.EngineIntrinsics] $engineIntrinsics) {
$Path = $Arguments
if ([string]::IsNullOrWhiteSpace($Path)) {
Throw [System.ArgumentNullException]::new()
}
# Remove ending DirectorySeparatorChar for comparison purposes
$Path = [System.Environment]::ExpandEnvironmentVariables($Path.TrimEnd([System.IO.Path]::DirectorySeparatorChar));
if (-not [System.IO.Directory]::Exists($Path)) {
Throw [System.IO.DirectoryNotFoundException]::new()
}
# [System.Environment]::GetEnvironmentVariable automatically expands all variables
[System.Array] $InstalledPaths = @()
if ([System.Environment]::OSVersion.Platform -eq "Win32NT") {
$InstalledPaths += @(([System.Environment]::GetEnvironmentVariable('PATH', [System.EnvironmentVariableTarget]::User)).Split([System.IO.Path]::PathSeparator))
$InstalledPaths += @(([System.Environment]::GetEnvironmentVariable('PATH', [System.EnvironmentVariableTarget]::Machine)).Split([System.IO.Path]::PathSeparator))
} else {
$InstalledPaths += @(([System.Environment]::GetEnvironmentVariable('PATH'), [System.EnvironmentVariableTarget]::Process).Split([System.IO.Path]::PathSeparator))
}
# Remove ending DirectorySeparatorChar in all items of array for comparison purposes
$InstalledPaths = $InstalledPaths.ForEach( { $_.TrimEnd([System.IO.Path]::DirectorySeparatorChar) } )
# Throw if $InstalledPaths is in setting
if ($InstalledPaths -icontains $Path) {
Throw [System.ArgumentException]::new("Path already exists.")
}
}
}
<#
.Synopsis
Adds a Path to settings (Supports Windows Only)
.DESCRIPTION
Adds the target path to the target registry.
.Parameter Path
The path to add to the registry. It is validated with ValidatePathNotInSettings which ensures that:
-The path exists
-Is a directory
-Is not in the registry (HKCU or HKLM)
.Parameter Target
The target hive to install the Path to.
Must be either User or Machine
Defaults to User
#>
Function Add-PathTToSettings {
[CmdletBinding()]
param(
[Parameter(Mandatory, ValueFromPipeline, ValueFromPipelineByPropertyName)]
[ValidateNotNullOrEmpty()]
[ValidatePathNotInSettings()]
[string] $Path,
[Parameter(ValueFromPipeline, ValueFromPipelineByPropertyName)]
[ValidateNotNullOrEmpty()]
[ValidateSet([System.EnvironmentVariableTarget]::User, [System.EnvironmentVariableTarget]::Machine)]
[System.EnvironmentVariableTarget] $Target = ([System.EnvironmentVariableTarget]::User)
)
if (-not $IsWinEnv) {
return
}
if ($Target -eq [System.EnvironmentVariableTarget]::User) {
[string] $Environment = 'Environment'
[Microsoft.Win32.RegistryKey] $Key = [Microsoft.Win32.Registry]::CurrentUser.OpenSubKey($Environment, [Microsoft.Win32.RegistryKeyPermissionCheck]::ReadWriteSubTree)
} else {
[string] $Environment = 'SYSTEM\CurrentControlSet\Control\Session Manager\Environment'
[Microsoft.Win32.RegistryKey] $Key = [Microsoft.Win32.Registry]::LocalMachine.OpenSubKey($Environment, [Microsoft.Win32.RegistryKeyPermissionCheck]::ReadWriteSubTree)
}
# $key is null here if it the user was unable to get ReadWriteSubTree access.
if ($null -eq $Key) {
throw [System.Security.SecurityException]::new("Unable to access the target registry")
}
# Get current unexpanded value
[string] $CurrentUnexpandedValue = $Key.GetValue('PATH', '', [Microsoft.Win32.RegistryValueOptions]::DoNotExpandEnvironmentNames)
# Keep current PathValueKind if possible/appropriate
try {
[Microsoft.Win32.RegistryValueKind] $PathValueKind = $Key.GetValueKind('PATH')
} catch {
[Microsoft.Win32.RegistryValueKind] $PathValueKind = [Microsoft.Win32.RegistryValueKind]::ExpandString
}
# Evaluate new path
$NewPathValue = [string]::Concat($CurrentUnexpandedValue.TrimEnd([System.IO.Path]::PathSeparator), [System.IO.Path]::PathSeparator, $Path)
# Upgrade PathValueKind to [Microsoft.Win32.RegistryValueKind]::ExpandString if appropriate
if ($NewPathValue.Contains('%')) { $PathValueKind = [Microsoft.Win32.RegistryValueKind]::ExpandString }
$Key.SetValue("PATH", $NewPathValue, $PathValueKind)
}
if (-not $IsWinEnv) {
$architecture = "x64"
} else {
switch ($env:PROCESSOR_ARCHITECTURE) {
"AMD64" { $architecture = "x64" }
"x86" { $architecture = "x86" }
default { throw "PowerShell package for OS architecture '$_' is not supported." }
}
}
$tempDir = Join-Path ([System.IO.Path]::GetTempPath()) ([System.IO.Path]::GetRandomFileName())
New-Item -ItemType Directory -Path $tempDir -Force -ErrorAction SilentlyContinue
try {
# Setting Tls to 12 to prevent the Invoke-WebRequest : The request was
# aborted: Could not create SSL/TLS secure channel. error.
$originalValue = [Net.ServicePointManager]::SecurityProtocol
[Net.ServicePointManager]::SecurityProtocol = [Net.ServicePointManager]::SecurityProtocol -bor [Net.SecurityProtocolType]::Tls12
if ($Daily) {
if (-not (Get-Module -Name PackageManagement -ListAvailable)) {
throw "PackageManagement module is required to install daily PowerShell Core."
}
if ($architecture -ne "x64") {
throw "The OS architecture is '$architecture'. However, we currently only support daily package for x64."
}
## Register source if not yet
if (-not (Get-PackageSource -Name powershell-core-daily -ErrorAction SilentlyContinue)) {
$packageSource = "https://powershell.myget.org/F/powershell-core-daily"
Write-Verbose "Register powershell-core-daily package source '$packageSource' with PackageManagement" -Verbose
Register-PackageSource -Name powershell-core-daily -Location $packageSource -ProviderName nuget -Trusted -ErrorAction SilentlyContinue
}
if ($IsWinEnv) {
$packageName = "powershell-win-x64-win7-x64"
} elseif ($IsLinuxEnv) {
$packageName = "powershell-linux-x64"
} elseif ($IsMacOSEnv) {
$packageName = "powershell-osx-x64"
}
$package = Find-Package -Source powershell-core-daily -AllowPrereleaseVersions -Name $packageName
Write-Verbose "Daily package found. Name: $packageName; Version: $($package.Version)" -Verbose
Install-Package -InputObject $package -Destination $tempDir -ExcludeVersion -ErrorAction SilentlyContinue
$contentPath = [System.IO.Path]::Combine($tempDir, $packageName, "content")
} else {
$metadata = Invoke-RestMethod https://raw.githubusercontent.com/PowerShell/PowerShell/master/tools/metadata.json
if ($Preview) {
$release = $metadata.PreviewReleaseTag -replace '^v'
} else {
$release = $metadata.ReleaseTag -replace '^v'
}
if ($IsWinEnv) {
if ($UseMSI) {
$packageName = "PowerShell-${release}-win-${architecture}.msi"
} else {
$packageName = "PowerShell-${release}-win-${architecture}.zip"
}
} elseif ($IsLinuxEnv) {
$packageName = "powershell-${release}-linux-${architecture}.tar.gz"
} elseif ($IsMacOSEnv) {
$packageName = "powershell-${release}-osx-${architecture}.tar.gz"
}
$downloadURL = "https://github.com/PowerShell/PowerShell/releases/download/v${release}/${packageName}"
Write-Verbose "About to download package from '$downloadURL'" -Verbose
$packagePath = Join-Path -Path $tempDir -ChildPath $packageName
if ($PSVersionTable.PSEdition -eq "Desktop") {
# On Windows PowerShell, progress can make the download significantly slower
$oldProgressPreference = $ProgressPreference
$ProgressPreference = "SilentlyContinue"
}
try {
Invoke-WebRequest -Uri $downloadURL -OutFile $packagePath
} finally {
if ($PSVersionTable.PSEdition -eq "Desktop") {
$ProgressPreference = $oldProgressPreference
}
}
$contentPath = Join-Path -Path $tempDir -ChildPath "new"
New-Item -ItemType Directory -Path $contentPath -ErrorAction SilentlyContinue
if ($IsWinEnv) {
if ($UseMSI -and $Quiet) {
Write-Verbose "Performing quiet install"
$process = Start-Process msiexec -ArgumentList "/i", $packagePath, "/quiet" -Wait -PassThru
if ($process.exitcode -ne 0) {
throw "Quiet install failed, please rerun install without -Quiet switch or ensure you have administrator rights"
}
} elseif ($UseMSI) {
Start-Process $packagePath -Wait
} else {
Expand-Archive -Path $packagePath -DestinationPath $contentPath
}
} else {
tar zxf $packagePath -C $contentPath
}
}
if (-not $UseMSI) {
Remove-Destination $Destination
if (Test-Path $Destination) {
Write-Verbose "Copying files" -Verbose
# only copy files as folders will already exist at $Destination
Get-ChildItem -Recurse -Path "$contentPath" -File | ForEach-Object {
$DestinationFilePath = Join-Path $Destination $_.fullname.replace($contentPath, "")
Copy-Item $_.fullname -Destination $DestinationFilePath
}
} else {
$null = New-Item -Path (Split-Path -Path $Destination -Parent) -ItemType Directory -ErrorAction SilentlyContinue
Move-Item -Path $contentPath -Destination $Destination
}
}
# Edit icon to disambiguate daily builds.
if ($IsWinEnv -and $Daily.IsPresent) {
if (-not (Test-Path "~/.rcedit/rcedit-x64.exe")) {
Write-Verbose "Install RCEdit for modifying exe resources" -Verbose
$rceditUrl = "https://github.com/electron/rcedit/releases/download/v1.0.0/rcedit-x64.exe"
New-Item -Path "~/.rcedit" -Type Directory -Force -ErrorAction SilentlyContinue
Invoke-WebRequest -OutFile "~/.rcedit/rcedit-x64.exe" -Uri $rceditUrl
}
Write-Verbose "Change icon to disambiguate it from a released installation" -Verbose
& "~/.rcedit/rcedit-x64.exe" "$Destination\pwsh.exe" --set-icon "$Destination\assets\Powershell_avatar.ico"
}
## Change the mode of 'pwsh' to 'rwxr-xr-x' to allow execution
if (-not $IsWinEnv) { chmod 755 $Destination/pwsh }
if ($AddToPath -and -not $UseMSI) {
if ($IsWinEnv) {
if ((-not ($Destination.StartsWith($ENV:USERPROFILE))) -and
(-not ($Destination.StartsWith($ENV:APPDATA))) -and
(-not ($Destination.StartsWith($env:LOCALAPPDATA)))) {
$TargetRegistry = [System.EnvironmentVariableTarget]::Machine
try {
Add-PathTToSettings -Path $Destination -Target $TargetRegistry
} catch {
Write-Verbose -Message "Unable to save the new path in the machine wide registry."
$TargetRegistry = [System.EnvironmentVariableTarget]::User
}
} else {
$TargetRegistry = [System.EnvironmentVariableTarget]::User
}
# If failed to install to machine wide path or path was not appropriate for machine wide path
if ($TargetRegistry -eq [System.EnvironmentVariableTarget]::User) {
try {
Add-PathTToSettings -Path $Destination -Target $TargetRegistry
} catch {
Write-Verbose -Message "Unable to save the new path in the registry for the current user"
}
}
} else {
$targetPath = Join-Path -Path $Destination -ChildPath "pwsh"
if ($IsLinuxEnv) { $symlink = "/usr/bin/pwsh" } elseif ($IsMacOSEnv) { $symlink = "/usr/local/bin/pwsh" }
$needNewSymlink = $true
if (Test-Path -Path $symlink) {
$linkItem = Get-Item -Path $symlink
if ($linkItem.LinkType -ne "SymbolicLink") {
Write-Warning "'$symlink' already exists but it's not a symbolic link. Abort adding to PATH."
$needNewSymlink = $false
} elseif ($linkItem.Target -contains $targetPath) {
## The link already points to the target
Write-Verbose "'$symlink' already points to '$targetPath'" -Verbose
$needNewSymlink = $false
}
}
if ($needNewSymlink) {
$uid = id -u
if ($uid -ne "0") { $SUDO = "sudo" } else { $SUDO = "" }
Write-Verbose "Make symbolic link '$symlink' point to '$targetPath'..." -Verbose
Invoke-Expression -Command "$SUDO ln -fs $targetPath $symlink"
if ($LASTEXITCODE -ne 0) {
Write-Error "Could not add to PATH: failed to make '$symlink' point to '$targetPath'."
}
}
}
## Add to the current process 'Path' if the process is not 'pwsh'
$runningProcessName = (Get-Process -Id $PID).ProcessName
if ($runningProcessName -ne 'pwsh') {
$env:Path = $Destination + [System.IO.Path]::PathSeparator + $env:Path
}
}
if (-not $UseMSI) {
Write-Host "PowerShell Core has been installed at $Destination" -ForegroundColor Green
if ($Destination -eq $PSHome) {
Write-Host "Please restart pwsh" -ForegroundColor Magenta
}
}
} finally {
# Restore original value
[Net.ServicePointManager]::SecurityProtocol = $originalValue
Remove-Item -Path $tempDir -Recurse -Force -ErrorAction SilentlyContinue
}