Курнат Андрей
105 lines
3.2 KiB
PowerShell
105 lines
3.2 KiB
PowerShell
[CmdletBinding(DefaultParameterSetName = "Url")]
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param(
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[Parameter(Mandatory = $true, ParameterSetName = "Url")]
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[string]$Url,
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[Parameter(Mandatory = $true, ParameterSetName = "Path")]
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[string]$Path
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)
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$ErrorActionPreference = "Stop"
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function Fail($Message) {
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Write-Error $Message
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exit 1
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}
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$feedSource = $null
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$feedContent = $null
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if ($PSCmdlet.ParameterSetName -eq "Url") {
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$parsedUrl = $null
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if (-not [System.Uri]::TryCreate($Url, [System.UriKind]::Absolute, [ref]$parsedUrl)) {
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Fail "Desktop update feed URL is not absolute: $Url"
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}
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if ($parsedUrl.Scheme -ne "https") {
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Fail "Desktop update feed URL must use HTTPS: $Url"
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}
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try {
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$response = Invoke-WebRequest -Uri $Url -UseBasicParsing -TimeoutSec 30
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} catch {
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Fail "Desktop update feed request failed for ${Url}: $($_.Exception.Message)"
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}
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if ($response.StatusCode -ne 200) {
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Fail "Desktop update feed must return HTTP 200. Actual status: $($response.StatusCode)"
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}
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$feedSource = $Url
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$feedContent = $response.Content
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} else {
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if (-not (Test-Path -LiteralPath $Path)) {
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Fail "Desktop update feed file was not found: $Path"
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}
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$feedSource = (Resolve-Path -LiteralPath $Path).Path
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$feedContent = Get-Content -LiteralPath $feedSource -Raw
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}
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try {
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[xml]$xml = $feedContent
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} catch {
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Fail "Desktop update feed is not valid XML: $($_.Exception.Message)"
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}
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if ($xml.DocumentElement.Name -ne "QSfera") {
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Fail "Desktop update feed root element must be <QSfera>."
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}
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$requiredElements = @("version", "versionstring", "web", "downloadurl")
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foreach ($name in $requiredElements) {
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if ($null -eq $xml.QSfera.$name) {
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Fail "Desktop update feed is missing <$name>."
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}
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}
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$version = [string]$xml.QSfera.version
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$versionString = [string]$xml.QSfera.versionstring
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$web = [string]$xml.QSfera.web
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$downloadUrl = [string]$xml.QSfera.downloadurl
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if (-not [string]::IsNullOrWhiteSpace($web)) {
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$webUri = $null
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if (-not [System.Uri]::TryCreate($web, [System.UriKind]::Absolute, [ref]$webUri) -or $webUri.Scheme -ne "https") {
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Fail "Desktop update feed <web> must be an absolute HTTPS URL when present."
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}
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}
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if ([string]::IsNullOrWhiteSpace($version)) {
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if (-not [string]::IsNullOrWhiteSpace($downloadUrl)) {
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Fail "Desktop no-update feed must leave <downloadurl> empty when <version> is empty."
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}
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} else {
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$parsedVersion = $null
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if (-not [System.Version]::TryParse($version, [ref]$parsedVersion)) {
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Fail "Desktop update feed <version> must be parseable as a version number."
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}
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if ([string]::IsNullOrWhiteSpace($versionString)) {
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Fail "Desktop update feed must set <versionstring> when <version> is present."
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}
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$downloadUri = $null
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if (-not [System.Uri]::TryCreate($downloadUrl, [System.UriKind]::Absolute, [ref]$downloadUri) -or $downloadUri.Scheme -ne "https") {
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Fail "Desktop update feed <downloadurl> must be an absolute HTTPS URL when an update is advertised."
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}
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if (-not $downloadUri.AbsolutePath.EndsWith(".msi", [System.StringComparison]::OrdinalIgnoreCase)) {
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Fail "Desktop Windows updater expects an MSI download URL."
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}
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}
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Write-Host "QSfera Desktop update feed validation passed: $feedSource"
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