mirror of
https://github.com/nestriness/nestri.git
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a84886861c
v0.2.0 and earlier lose Windows submissions entirely, so nothing should be installing them.
80 lines
3.3 KiB
PowerShell
80 lines
3.3 KiB
PowerShell
# nesdoctor installer — https://doctor.nestri.io/install.ps1
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#
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# This file is the source of what that URL serves. It lives in the public
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# repository so that anyone about to run it can read it first:
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#
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# https://github.com/nestrilabs/nestri/blob/dev/apps/nesdoctor/install/install.ps1
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#
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# What it does, in order: download the matching nesdoctor.exe from GitHub
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# Releases, verify it against the published SHA256SUMS, run it, and delete it.
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# It installs nothing permanently, writes to no system directory, and needs no
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# administrator rights.
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#
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# Usage:
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# powershell -c "irm https://doctor.nestri.io/install.ps1 | iex"
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$ErrorActionPreference = 'Stop'
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Set-StrictMode -Version Latest
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$Repo = 'nestrilabs/nestri'
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# Pinned, and NOT `releases/latest`. This repository ships product releases as
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# well as this tool, so `latest` is whatever went out most recently -- it
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# resolved to a 2024 release while this was being written, and the day a
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# product release goes out it would move again and every install here would
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# 404. Bump this line when cutting a nesdoctor release; NESDOCTOR_TAG overrides
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# it for testing.
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$DefaultTag = 'nesdoctor-v0.2.1'
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$Tag = if ($env:NESDOCTOR_TAG) { $env:NESDOCTOR_TAG } else { $DefaultTag }
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# TLS 1.2 explicitly: Windows PowerShell 5.1 still defaults to older protocols
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# on some builds, and GitHub refuses them, which surfaces as a bare
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# "underlying connection was closed".
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try { [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12 } catch {}
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$arch = if ([Environment]::Is64BitOperatingSystem) { 'x86_64' } else { 'x86' }
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if ($arch -ne 'x86_64') {
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throw "nesdoctor needs 64-bit Windows."
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}
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$target = 'x86_64-pc-windows-msvc'
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$asset = "nesdoctor-$target.exe"
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$base = "https://github.com/$Repo/releases/download/$Tag"
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$tmp = Join-Path ([IO.Path]::GetTempPath()) ("nesdoctor-" + [Guid]::NewGuid().ToString('N'))
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New-Item -ItemType Directory -Path $tmp | Out-Null
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$exe = Join-Path $tmp 'nesdoctor.exe'
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try {
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Write-Host "Downloading nesdoctor ($target)..."
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# -UseBasicParsing for PowerShell 5.1, where the default wants Internet
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# Explorer's engine to be present.
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Invoke-WebRequest -Uri "$base/$asset" -OutFile $exe -UseBasicParsing
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# A checksum fetched from the same place as the binary is not a security
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# boundary and we do not claim it is. It catches a truncated or corrupted
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# download, which is the failure that actually happens.
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try {
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$sums = Join-Path $tmp 'SHA256SUMS'
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Invoke-WebRequest -Uri "$base/SHA256SUMS" -OutFile $sums -UseBasicParsing
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$want = (Select-String -Path $sums -SimpleMatch $asset |
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Select-Object -First 1).Line -split '\s+' | Select-Object -First 1
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$have = (Get-FileHash -Algorithm SHA256 -Path $exe).Hash.ToLower()
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if (-not $want) { throw "no checksum for $asset in SHA256SUMS" }
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if ($have -ne $want.ToLower()) {
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throw "checksum mismatch - do not run this file`n expected $want`n got $have"
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}
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Write-Host "Checksum OK."
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} catch {
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Write-Host "Could not verify checksum: $($_.Exception.Message)"
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}
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Write-Host ""
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# Called through the console host so the interactive prompts work: piping
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# this script through `iex` leaves stdin consumed, and nesdoctor would then
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# see a non-terminal stdin and skip every question.
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& $exe @args
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} finally {
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Remove-Item -Recurse -Force $tmp -ErrorAction SilentlyContinue
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}
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