Public/Network/WebTools/Get-AkaMSDownloadLink.ps1
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# ($DownloadLink, $SpecificVersion, $EffectiveVersion) = Get-AkaMsLink-And-Version $NormalizedChannel $NormalizedQuality $Internal $NormalizedProduct $CLIArchitecture function Get-AkaMSDownloadLink([string]$Channel, [string]$Quality, [bool]$Internal, [string]$Product, [string]$Architecture) { # Get-AkaMSDownloadLink -Channel $NormalizedChannel -Quality $NormalizedQuality -Internal $Internal -Product $ProductName -Architecture $Architecture Write-Invocation $MyInvocation #quality is not supported for LTS or current channel if (![string]::IsNullOrEmpty($Quality) -and (@("LTS", "current") -contains $Channel)) { $Quality = "" Out-Warning "Specifying quality for current or LTS channel is not supported, the quality will be ignored." } Out-Verbose "Retrieving primary payload URL from aka.ms link for channel: '$Channel', quality: '$Quality' product: '$Product', os: 'win', architecture: '$Architecture'." #construct aka.ms link $akaMsLink = "https://aka.ms/dotnet" if ($Internal) { $akaMsLink += "/internal" } $akaMsLink += "/$Channel" if (![string]::IsNullOrEmpty($Quality)) { $akaMsLink += "/$Quality" } $akaMsLink += "/$Product-win-$Architecture.zip" Out-Verbose "Constructed aka.ms link: '$akaMsLink'." $akaMsDownloadLink = $null for ($maxRedirections = 9; $maxRedirections -ge 0; $maxRedirections--) { #get HTTP response #do not pass credentials as a part of the $akaMsLink and do not apply credentials in the GetHTTPResponse function #otherwise the redirect link would have credentials as well #it would result in applying credentials twice to the resulting link and thus breaking it, and in echoing credentials to the output as a part of redirect link $Response = GetHTTPResponse -Uri $akaMsLink -HeaderOnly $true -DisableRedirect $true -DisableFeedCredential $true Out-Verbose "Received response:`n$Response" if ([string]::IsNullOrEmpty($Response)) { Out-Verbose "The link '$akaMsLink' is not valid: failed to get redirect location. The resource is not available." return $null } #if HTTP code is 301 (Moved Permanently), the redirect link exists if ($Response.StatusCode -eq 301) { try { $akaMsDownloadLink = $Response.Headers.GetValues("Location")[0] if ([string]::IsNullOrEmpty($akaMsDownloadLink)) { Out-Verbose "The link '$akaMsLink' is not valid: server returned 301 (Moved Permanently), but the headers do not contain the redirect location." return $null } Out-Verbose "The redirect location retrieved: '$akaMsDownloadLink'." # This may yet be a link to another redirection. Attempt to retrieve the page again. $akaMsLink = $akaMsDownloadLink continue } catch { Out-Verbose "The link '$akaMsLink' is not valid: failed to get redirect location." return $null } } elseif ((($Response.StatusCode -lt 300) -or ($Response.StatusCode -ge 400)) -and (![string]::IsNullOrEmpty($akaMsDownloadLink))) { # Redirections have ended. return $akaMsDownloadLink } Out-Verbose "The link '$akaMsLink' is not valid: failed to retrieve the redirection location." return $null } Out-Verbose "Aka.ms links have redirected more than the maximum allowed redirections. This may be caused by a cyclic redirection of aka.ms links." return $null } # function Get-NormalizedProduct([string]$Runtime) { # Write-Invocation $MyInvocation # switch ($Runtime) { # { $_ -eq "dotnet" } { return "dotnet-runtime" } # { $_ -eq "aspnetcore" } { return "aspnetcore-runtime" } # { $_ -eq "windowsdesktop" } { return "windowsdesktop-runtime" } # { [string]::IsNullOrEmpty($_) } { return "dotnet-sdk" } # default { throw "'$Runtime' is not a supported value for -Runtime option, supported values are: dotnet, aspnetcore, windowsdesktop. If you think this is a bug, report it at https://github.com/dotnet/install-scripts/issues." } # } # } |