Ubuntu.ps1
|
# https://www.lucd.info/2019/12/06/cloud-init-part-1-the-basics/ # https://gist.github.com/leogallego/a614c61457ed22cb1d960b32de4a1b01 function Get-OVF { } function Get-Ubuntu { param ( [string] $Path, [string] $File, [bool] $Update ) $cacheDir = Get-BoxPath -Path "cache" $imageFile = Join-Path $cacheDir $File # If not update and image file exists we have it if (-Not($Update)) { if (Test-Path $imageFile -PathType Leaf) { return $imageFile } } $ProgressPreference = "SilentlyContinue" $url = (("https://cloud-images.ubuntu.com", $Path, $File) -join "/") Write-Verbose $url # If update and we have a file, check if there's one newer if (Test-Path $imageFile -PathType Leaf) { Write-UbuntuLog Write-Host $File -NoNewline Write-Host -ForegroundColor Yellow " (imatge)" Write-UbuntuLog Write-Host "Comprovant si hi ha una imatge més recent ..." -NoNewline $response = Invoke-WebRequest $url -UseBasicParsing -Method Head Write-Host -ForegroundColor Green " Fet." $cloudFileTime = Get-Date -Date ($response.Headers["Last-Modified"]) $cacheFileTime = (Get-ChildItem $imageFile | Select-Object LastWriteTime).LastWriteTime Write-Debug "Cache file time: $cacheFileTime" Write-Debug "Cloud file time: $cloudFileTime" if ($cacheFileTime -gt $cloudFileTime) { Write-UbuntuLog Write-Host "Tens en cache la imatge mes recent " -NoNewline Write-Host -ForegroundColor Yellow "($cloudFileTime)" return $imageFile } } # Download file Write-UbuntuLog Write-Host "Imatge de $url" Write-UbuntuLog Write-Host "Comprovant el tamany de la nova imatge ..." -NoNewline $response = Invoke-WebRequest $url -UseBasicParsing -Method Head Write-Host -ForegroundColor Green " Fet." $downloadSize = [int]$response.Headers["Content-Length"] $tmpFile = Join-Path $cacheDir "${File}.tmp" if (Test-Path $tmpFile -PathType Leaf) { Remove-Item $tmpFile } Write-UbuntuLog Write-Host "Descarregant la nova imatge ($([int]($downloadSize / 1024 / 1024)) MB)..." -NoNewline Invoke-WebRequest $url -OutFile $tmpFile Write-Host -ForegroundColor Green " Fet." # Check file hash $hashPath = (("https://cloud-images.ubuntu.com", $Path, "SHA256SUMS") -join "/") Write-UbuntuLog Write-Host "Verificant el hash del fitxer ..." -NoNewline $hashSums = [System.Text.Encoding]::UTF8.GetString((Invoke-WebRequest $hashPath -UseBasicParsing).Content) $fileHash = Get-FileHash $tmpFile -Algorithm SHA256 if (($hashSums | Select-String -pattern $fileHash.Hash -SimpleMatch).Count -eq 0) { Remove-Item $tmpFile Write-UbuntuLog Write-Host -ForegroundColor Red "La imatge no s'ha descarregat correctament." return } Write-Host -ForegroundColor Green " Fet." $ProgressPreference = "Continue" # Replace file if (Test-Path $imageFile -PathType Leaf) { Remove-Item $imageFile } Move-Item $tmpFile $imageFile return $imageFile } function Update-Ubuntu { param ( [string] $Path, [string] $File ) Get-Ubuntu -Path $Path -File $File -Update $True } ##### Private function Write-UbuntuLog { param( [string] $File ) Write-Host -ForegroundColor Blue -NoNewline "Ubuntu " Write-Host ": " -NoNewline } |