Warn users when installing EOL .NET versions (#245)

Update dependencies and installer scripts

.github/workflows/check-dist.yml

@@ -0,0 +1,51 @@
+# `dist/index.js` is a special file in Actions.
+# When you reference an action with `uses:` in a workflow,
+# `index.js` is the code that will run.
+# For our project, we generate this file through a build process from other source files.
+# We need to make sure the checked-in `index.js` actually matches what we expect it to be.
+name: Check dist/
+
+on:
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - '**.md'
+  pull_request:
+    paths-ignore:
+      - '**.md'
+  workflow_dispatch:
+
+jobs:
+  check-dist:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set Node.js 12.x
+        uses: actions/setup-node@v1
+        with:
+          node-version: 12.x
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Rebuild the dist/ directory
+        run: npm run build
+
+      - name: Compare the expected and actual dist/ directories
+        run: |
+          if [ "$(git diff --ignore-space-at-eol dist/ | wc -l)" -gt "0" ]; then
+            echo "Detected uncommitted changes after build.  See status below:"
+            git diff
+            exit 1
+          fi
+        id: diff
+
+      # If index.js was different than expected, upload the expected version as an artifact
+      - uses: actions/upload-artifact@v2
+        if: ${{ failure() && steps.diff.conclusion == 'failure' }}
+        with:
+          name: dist
+          path: dist/

.github/workflows/licensed.yml

@@ -1,8 +1,12 @@
 name: Licensed
 
 on:
-  push: {branches: main}
-  pull_request: {branches: main}
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
 
 jobs:
   test:
@@ -17,4 +21,4 @@ jobs:
           curl -Lfs -o licensed.tar.gz https://github.com/github/licensed/releases/download/2.12.2/licensed-2.12.2-linux-x64.tar.gz
           sudo tar -xzf licensed.tar.gz
           sudo mv licensed /usr/local/bin/licensed
-      - run: licensed status
+      - run: licensed status

.github/workflows/release-new-action-version.yml

@@ -0,0 +1,28 @@
+name: Release new action version
+on:
+  release:
+    types: [released]
+  workflow_dispatch:
+    inputs:
+      TAG_NAME:
+        description: 'Tag name that the major tag will point to'
+        required: true
+
+env:
+  TAG_NAME: ${{ github.event.inputs.TAG_NAME || github.event.release.tag_name }}
+permissions:
+  contents: write
+
+jobs:
+  update_tag:
+    name: Update the major tag to include the ${{ github.event.inputs.TAG_NAME || github.event.release.tag_name }} changes
+    environment:
+      name: releaseNewActionVersion
+    runs-on: ubuntu-latest
+    steps:
+    - name: Update the ${{ env.TAG_NAME }} tag
+      id: update-major-tag
+      uses: actions/publish-action@v0.1.0
+      with:
+        source-tag: ${{ env.TAG_NAME }}
+        slack-webhook: ${{ secrets.SLACK_WEBHOOK }}

.github/workflows/workflow.yml

@@ -32,6 +32,29 @@ jobs:
     - name: Verify no unstaged changes
       if: runner.os != 'windows'
       run: __tests__/verify-no-unstaged-changes.sh
+  
+  test-setup-multiple-versions:
+    runs-on: ${{ matrix.operating-system }}
+    strategy:
+      fail-fast: false
+      matrix:
+        operating-system: [ubuntu-latest, windows-latest, macOS-latest]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Clear toolcache
+        shell: pwsh
+        run: __tests__/clear-toolcache.ps1 ${{ runner.os }}
+      - name: Setup dotnet 2.2.402 and 3.1.404
+        uses: ./
+        with:
+          dotnet-version: |
+             2.2.402
+             3.1.404
+             3.0.x
+      - name: Verify dotnet
+        shell: pwsh
+        run: __tests__/verify-dotnet.ps1 2.2.402 3.1.404 '3.0'
 
   test-setup-full-version:
     runs-on: ${{ matrix.operating-system }}

.licenses/npm/@actions/core.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: "@actions/core"
-version: 1.2.6
+version: 1.6.0
 type: npm
 summary: Actions core lib
 homepage: https://github.com/actions/toolkit/tree/main/packages/core

.licenses/npm/@actions/http-client-1.0.11.dep.yml

@@ -0,0 +1,32 @@
+---
+name: "@actions/http-client"
+version: 1.0.11
+type: npm
+summary: Actions Http Client
+homepage: https://github.com/actions/http-client#readme
+license: mit
+licenses:
+- sources: LICENSE
+  text: |
+    Actions Http Client for Node.js
+
+    Copyright (c) GitHub, Inc.
+
+    All rights reserved.
+
+    MIT License
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
+    associated documentation files (the "Software"), to deal in the Software without restriction,
+    including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
+    and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
+    subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
+    LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+    NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+    WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+    SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+notices: []

README.md

@@ -4,9 +4,9 @@
   <a href="https://github.com/actions/setup-dotnet"><img alt="GitHub Actions status" src="https://github.com/actions/setup-dotnet/workflows/Main%20workflow/badge.svg"></a>
 </p>
 
-This action sets up a [dotnet core cli](https://github.com/dotnet/cli) environment for use in actions by:
+This action sets up a [.NET CLI](https://github.com/dotnet/sdk) environment for use in actions by:
 
-- optionally downloading and caching a version of dotnet by SDK version and adding to PATH
+- optionally downloading and caching a version(s) of dotnet by SDK version(s) and adding to PATH
 - registering problem matchers for error output
 - setting up authentication to private package sources like GitHub Packages
 
@@ -29,11 +29,24 @@ steps:
     dotnet-version: '3.1.x' # SDK Version to use; x will use the latest version of the 3.1 channel
 - run: dotnet build <my project>
 ```
+Multiple versions:
+> Note: In case multiple versions are installed, the latest .NET version will be used by default unless another version is specified in the `global.json` file.
 
+```yml
+steps:
+- name: Setup dotnet
+- uses: actions/checkout@v2
+- uses: actions/setup-dotnet@v1
+  with:
+    dotnet-version: | 
+      3.1.x
+      5.0.x
+- run: dotnet build <my project>
+```
 Preview version:
 ```yml
 steps:
-- uses: actions@checkout@v2
+- uses: actions/checkout@v2
 - uses: actions/setup-dotnet@v1
   with:
     dotnet-version: '6.0.x'
@@ -93,10 +106,10 @@ steps:
 - run: dotnet build <my project>
 - name: Create the package
   run: dotnet pack --configuration Release <my project>
- - name: Publish the package to GPR
+- name: Publish the package to GPR
   run: dotnet nuget push <my project>/bin/Release/*.nupkg
 
-# Authticates packages to push to Azure Artifacts
+# Authenticates packages to push to Azure Artifacts
 - uses: actions/setup-dotnet@v1
   with:
     source-url: https://pkgs.dev.azure.com/<your-organization>/_packaging/<your-feed-name>/nuget/v3/index.json
@@ -104,11 +117,21 @@ steps:
     NUGET_AUTH_TOKEN: ${{secrets.AZURE_DEVOPS_PAT}} # Note, create a secret with this name in Settings
 - name: Publish the package to Azure Artifacts
   run: dotnet nuget push <my project>/bin/Release/*.nupkg
+
+# Authenticates packages to push to nuget.org.
+# It's only the way to push a package to nuget.org feed for macOS/Linux machines due to API key config store limitations.
+- uses: actions/setup-dotnet@v1
+  with:
+    dotnet-version: 3.1.x
+- name: Publish the package to nuget.org
+  run: dotnet nuget push */bin/Release/*.nupkg -k $NUGET_AUTH_TOKEN -s https://api.nuget.org/v3/index.json
+  env:
+    NUGET_AUTH_TOKEN: ${{ secrets.NUGET_TOKEN }}
 ```
 
 ## Environment Variables to use with dotnet
 
-Some environment variables may be necessary for your particular case or to improve logging. Some examples are listed below, but the full list with complete details can be found here: https://docs.microsoft.com/en-us/dotnet/core/tools/dotnet#environment-variables
+Some environment variables may be necessary for your particular case or to improve logging. Some examples are listed below, but the full list with complete details can be found here: https://docs.microsoft.com/en-us/dotnet/core/tools/dotnet-environment-variables
 
 - DOTNET_NOLOGO - removes logo and telemetry message from first run of dotnet cli (default: false)
 - DOTNET_CLI_TELEMETRY_OPTOUT - opt-out of telemetry being sent to Microsoft (default: false)

__tests__/clear-toolcache.ps1

@@ -1,13 +1,13 @@
 $dotnetPaths = @{
-    Linux = @("/usr/share/dotnet")
-    macOS = @("$env:HOME/.dotnet")
-    Windows = @("$env:ProgramFiles\dotnet/*",
-                  "$env:LocalAppData\Microsoft\dotnet/*")
+    Linux = "/usr/share/dotnet"
+    macOS = "$env:HOME/.dotnet"
+    Windows = "$env:ProgramFiles\dotnet", "$env:LocalAppData\Microsoft\dotnet"
 }
 
-foreach ($path in $dotnetPaths[$args[0]]) {
-    if (Test-Path $path) {
-        Write-Host "Clear $path path"
-        Remove-Item $path -Recurse -Force
+foreach ($srcPath in $dotnetPaths[$args[0]]) {
+    if (Test-Path $srcPath) {
+        Write-Host "Move $srcPath path"
+        $dstPath = Join-Path ([IO.Path]::GetTempPath()) ([IO.Path]::GetRandomFileName())
+        Move-Item -Path $srcPath -Destination $dstPath
     }
 }

__tests__/installer.test.ts

@@ -32,6 +32,27 @@ describe('installer tests', () => {
     }
   }, 30000);
 
+  it('Aquires multiple versions of dotnet', async () => {
+    const versions = ['2.2.207', '3.1.120'];
+
+    for (const version of versions) {
+      await getDotnet(version);
+    }
+    expect(fs.existsSync(path.join(toolDir, 'sdk', '2.2.207'))).toBe(true);
+    expect(fs.existsSync(path.join(toolDir, 'sdk', '3.1.120'))).toBe(true);
+
+    if (IS_WINDOWS) {
+      expect(fs.existsSync(path.join(toolDir, 'dotnet.exe'))).toBe(true);
+    } else {
+      expect(fs.existsSync(path.join(toolDir, 'dotnet'))).toBe(true);
+    }
+
+    expect(process.env.DOTNET_ROOT).toBeDefined;
+    expect(process.env.PATH).toBeDefined;
+    expect(process.env.DOTNET_ROOT).toBe(toolDir);
+    expect(process.env.PATH?.startsWith(toolDir)).toBe(true);
+  }, 600000);
+
   it('Acquires version of dotnet if no matching version is installed', async () => {
     await getDotnet('3.1.201');
     expect(fs.existsSync(path.join(toolDir, 'sdk', '3.1.201'))).toBe(true);
@@ -126,4 +147,5 @@ function normalizeFileContents(contents: string): string {
 async function getDotnet(version: string): Promise<void> {
   const dotnetInstaller = new installer.DotnetCoreInstaller(version);
   await dotnetInstaller.installDotnet();
+  installer.DotnetCoreInstaller.addToPath();
 }

__tests__/sample-csproj/sample.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1;netcoreapp2.2</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1;netcoreapp3.0;netcoreapp2.2</TargetFrameworks>
     <RootNamespace>sample_csproj</RootNamespace>
 
     <IsPackable>false</IsPackable>

__tests__/setup-dotnet.test.ts

@@ -7,6 +7,7 @@ const toolDir = path.join(__dirname, 'runner', 'tools2');
 const tempDir = path.join(__dirname, 'runner', 'temp2');
 
 import * as setup from '../src/setup-dotnet';
+import * as dotnetInstaller from '../src/installer';
 
 const IS_WINDOWS = process.platform === 'win32';
 
@@ -19,7 +20,7 @@ describe('setup-dotnet tests', () => {
     await io.rmRF(tempDir);
   });
 
-  afterAll(async () => {
+  afterEach(async () => {
     try {
       await io.rmRF(path.join(process.cwd(), 'global.json'));
       await io.rmRF(toolDir);
@@ -44,4 +45,26 @@ describe('setup-dotnet tests', () => {
       expect(fs.existsSync(path.join(toolDir, 'dotnet'))).toBe(true);
     }
   }, 400000);
+
+  it('Acquires version of dotnet from global.json with rollForward option, install the latest patch', async () => {
+    const globalJsonPath = path.join(process.cwd(), 'global.json');
+    const jsonContents = `{${os.EOL}"sdk": {${os.EOL}"version":"3.1.201",${os.EOL}"rollForward":"latestFeature"${os.EOL}}${os.EOL}}`;
+    if (!fs.existsSync(globalJsonPath)) {
+      fs.writeFileSync(globalJsonPath, jsonContents);
+    }
+
+    const version = '3.1';
+    const installer = new dotnetInstaller.DotnetCoreInstaller(version);
+    const patchVersion = await installer.resolveVersion(
+      new dotnetInstaller.DotNetVersionInfo(version)
+    );
+    await setup.run();
+
+    expect(fs.existsSync(path.join(toolDir, 'sdk', patchVersion))).toBe(true);
+    if (IS_WINDOWS) {
+      expect(fs.existsSync(path.join(toolDir, 'dotnet.exe'))).toBe(true);
+    } else {
+      expect(fs.existsSync(path.join(toolDir, 'dotnet'))).toBe(true);
+    }
+  }, 400000);
 });

__tests__/verify-dotnet.ps1

@@ -6,12 +6,15 @@ if (!$args[0])
 $dotnet = Get-Command dotnet | Select-Object -First 1 | ForEach-Object { $_.Path }
 Write-Host "Found '$dotnet'"
 
-$version = & $dotnet --version | Out-String | ForEach-Object { $_.Trim() }
-Write-Host "Version $version"
-if (-not ($version.StartsWith($args[0].ToString())))
+if($args.count -eq 1)
 {
-  Write-Host "PATH='$env:PATH'"
-  throw "Unexpected version"
+  $version = & $dotnet --version | Out-String | ForEach-Object { $_.Trim() }
+  Write-Host "Version $version"
+  if (-not ($version.StartsWith($args[0].ToString())))
+  {
+    Write-Host "PATH='$env:PATH'"
+    throw "Unexpected version"
+  }
 }
 
 if ($args[1])
@@ -19,16 +22,17 @@ if ($args[1])
   # SDKs are listed on multiple lines with the path afterwards in square brackets
   $versions = & $dotnet --list-sdks | ForEach-Object { $_.SubString(0, $_.IndexOf('[')).Trim() }
   Write-Host "Installed versions: $versions"
-  $isInstalledVersion = $false
-  foreach ($version in $versions)
-  {
-    if ($version.StartsWith($args[1].ToString())) 
+  $InstalledVersionCount = 0
+  foreach($arg in $args){
+    foreach ($version in $versions)
     {
-      $isInstalledVersion = $true
-      break
+      if ($version.StartsWith($arg.ToString())) 
+      {
+        $InstalledVersionCount++
+      }
     }
-  }
-  if (-not $isInstalledVersion)
+   }
+  if ( $InstalledVersionCount -ne $args.Count)
   {
     Write-Host "PATH='$env:PATH'"
     throw "Unexpected version"
@@ -53,6 +57,13 @@ if ($args[1])
     throw "Unexpected output"
   }
 }
+if ($args[2])
+{
+  if ($sample_output -notlike "*Test Run Successful.*Test Run Successful.*Test Run Successful.*")
+  {
+    throw "Unexpected output"
+  }
+}
 else
 {
   if ($sample_output -notlike "*Test Run Successful.*")

action.yml

@@ -1,12 +1,12 @@
 name: 'Setup .NET Core SDK'
-description: 'Set up a specific version of the .NET Core CLI in the PATH and set up authentication to a private NuGet repository'
+description: 'Used to build and publish .NET source. Set up a specific version of the .NET and authentication to private NuGet repository'
 author: 'GitHub'
 branding:
   icon: play
   color: green
 inputs:
   dotnet-version:
-    description: 'Optional SDK version to use. If not provided, will install global.json version when available. Examples: 2.2.104, 3.1, 3.1.x'
+    description: 'Optional SDK version(s) to use. If not provided, will install global.json version when available. Examples: 2.2.104, 3.1, 3.1.x'
   source-url:
     description: 'Optional package source for which to set up authentication. Will consult any existing NuGet.config in the root of the repo and provide a temporary NuGet.config using the NUGET_AUTH_TOKEN environment variable as a ClearTextPassword'
   owner:

externals/install-dotnet.ps1

@@ -16,15 +16,27 @@
     - LTS - most current supported release
     - 2-part version in a format A.B - represents a specific release
           examples: 2.0, 1.0
-    - Branch name
-          examples: release/2.0.0, Master
-    Note: The version parameter overrides the channel parameter.
+    - 3-part version in a format A.B.Cxx - represents a specific SDK release
+          examples: 5.0.1xx, 5.0.2xx
+          Supported since 5.0 release
+    Note: The version parameter overrides the channel parameter when any version other than 'latest' is used.
+.PARAMETER Quality
+    Download the latest build of specified quality in the channel. The possible values are: daily, signed, validated, preview, GA.
+    Works only in combination with channel. Not applicable for current and LTS channels and will be ignored if those channels are used. 
+    For SDK use channel in A.B.Cxx format: using quality together with channel in A.B format is not supported.
+    Supported since 5.0 release.
+    Note: The version parameter overrides the channel parameter when any version other than 'latest' is used, and therefore overrides the quality.     
 .PARAMETER Version
     Default: latest
     Represents a build version on specific channel. Possible values:
     - latest - most latest build on specific channel
     - 3-part version in a format A.B.C - represents specific version of build
           examples: 2.0.0-preview2-006120, 1.1.0
+.PARAMETER Internal
+    Download internal builds. Requires providing credentials via -FeedCredential parameter.
+.PARAMETER FeedCredential
+    Token to access Azure feed. Used as a query string to append to the Azure feed.
+    This parameter typically is not specified.
 .PARAMETER InstallDir
     Default: %LocalAppData%\Microsoft\dotnet
     Path to where to install dotnet. Note that binaries will be placed directly in a given directory.
@@ -59,9 +71,6 @@
 .PARAMETER UncachedFeed
     This parameter typically is not changed by the user.
     It allows changing the URL for the Uncached feed used by this installer.
-.PARAMETER FeedCredential
-    Used as a query string to append to the Azure feed.
-    It allows changing the URL to use non-public blob storage accounts.
 .PARAMETER ProxyAddress
     If set, the installer will use the proxy when making web requests
 .PARAMETER ProxyUseDefaultCredentials
@@ -77,15 +86,19 @@
 .PARAMETER JSonFile
     Determines the SDK version from a user specified global.json file
     Note: global.json must have a value for 'SDK:Version'
+.PARAMETER DownloadTimeout
+    Determines timeout duration in seconds for dowloading of the SDK file
+    Default: 1200 seconds (20 minutes)
 #>
 [cmdletbinding()]
 param(
    [string]$Channel="LTS",
+   [string]$Quality,
    [string]$Version="Latest",
+   [switch]$Internal,
    [string]$JSonFile,
-   [string]$InstallDir="<auto>",
+   [Alias('i')][string]$InstallDir="<auto>",
    [string]$Architecture="<auto>",
-   [ValidateSet("dotnet", "aspnetcore", "windowsdesktop", IgnoreCase = $false)]
    [string]$Runtime,
    [Obsolete("This parameter may be removed in a future version of this script. The recommended alternative is '-Runtime dotnet'.")]
    [switch]$SharedRuntime,
@@ -98,7 +111,8 @@ param(
    [switch]$ProxyUseDefaultCredentials,
    [string[]]$ProxyBypassList=@(),
    [switch]$SkipNonVersionedFiles,
-   [switch]$NoCdn
+   [switch]$NoCdn,
+   [int]$DownloadTimeout=1200
 )
 
 Set-StrictMode -Version Latest
@@ -167,7 +181,7 @@ function Say-Invocation($Invocation) {
     Say-Verbose "$command $args"
 }
 
-function Invoke-With-Retry([ScriptBlock]$ScriptBlock, [int]$MaxAttempts = 3, [int]$SecondsBetweenAttempts = 1) {
+function Invoke-With-Retry([ScriptBlock]$ScriptBlock, [System.Threading.CancellationToken]$cancellationToken = [System.Threading.CancellationToken]::None, [int]$MaxAttempts = 3, [int]$SecondsBetweenAttempts = 1) {
     $Attempts = 0
 
     while ($true) {
@@ -176,7 +190,7 @@ function Invoke-With-Retry([ScriptBlock]$ScriptBlock, [int]$MaxAttempts = 3, [in
         }
         catch {
             $Attempts++
-            if ($Attempts -lt $MaxAttempts) {
+            if (($Attempts -lt $MaxAttempts) -and -not $cancellationToken.IsCancellationRequested) {
                 Start-Sleep $SecondsBetweenAttempts
             }
             else {
@@ -205,7 +219,7 @@ function Get-Machine-Architecture() {
 function Get-CLIArchitecture-From-Architecture([string]$Architecture) {
     Say-Invocation $MyInvocation
 
-    switch ($Architecture.ToLower()) {
+    switch ($Architecture.ToLowerInvariant()) {
         { $_ -eq "<auto>" } { return Get-CLIArchitecture-From-Architecture $(Get-Machine-Architecture) }
         { ($_ -eq "amd64") -or ($_ -eq "x64") } { return "x64" }
         { $_ -eq "x86" } { return "x86" }
@@ -215,6 +229,53 @@ function Get-CLIArchitecture-From-Architecture([string]$Architecture) {
     }
 }
 
+
+function Get-NormalizedQuality([string]$Quality) {
+    Say-Invocation $MyInvocation
+
+    if ([string]::IsNullOrEmpty($Quality)) {
+        return ""
+    }
+
+    switch ($Quality) {
+        { @("daily", "signed", "validated", "preview") -contains $_ } { return $Quality.ToLowerInvariant() }
+        #ga quality is available without specifying quality, so normalizing it to empty
+        { $_ -eq "ga" } { return "" }
+        default { throw "'$Quality' is not a supported value for -Quality option. Supported values are: daily, signed, validated, preview, ga. If you think this is a bug, report it at https://github.com/dotnet/install-scripts/issues." }
+    }
+}
+
+function Get-NormalizedChannel([string]$Channel) {
+    Say-Invocation $MyInvocation
+
+    if ([string]::IsNullOrEmpty($Channel)) {
+        return ""
+    }
+
+    if ($Channel.StartsWith('release/')) {
+        Say-Warning 'Using branch name with -Channel option is no longer supported with newer releases. Use -Quality option with a channel in X.Y format instead, such as "-Channel 5.0 -Quality Daily."'
+    }
+
+    switch ($Channel) {
+        { $_ -eq "lts" } { return "LTS" }
+        { $_ -eq "current" } { return "current" }
+        default { return $Channel.ToLowerInvariant() }
+    }
+}
+
+function Get-NormalizedProduct([string]$Runtime) {
+    Say-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." }
+    }
+}
+
+
 # The version text returned from the feeds is a 1-line or 2-line string:
 # For the SDK and the dotnet runtime (2 lines):
 # Line 1: # commit_hash
@@ -243,10 +304,11 @@ function Load-Assembly([string] $Assembly) {
     }
 }
 
-function GetHTTPResponse([Uri] $Uri)
+function GetHTTPResponse([Uri] $Uri, [bool]$HeaderOnly, [bool]$DisableRedirect, [bool]$DisableFeedCredential)
 {
-    Invoke-With-Retry(
-    {
+    $cts = New-Object System.Threading.CancellationTokenSource
+
+    $downloadScript = {
 
         $HttpClient = $null
 
@@ -270,32 +332,53 @@ function GetHTTPResponse([Uri] $Uri)
                 }
             }
 
+            $HttpClientHandler = New-Object System.Net.Http.HttpClientHandler
             if($ProxyAddress) {
-                $HttpClientHandler = New-Object System.Net.Http.HttpClientHandler
                 $HttpClientHandler.Proxy =  New-Object System.Net.WebProxy -Property @{
                     Address=$ProxyAddress;
                     UseDefaultCredentials=$ProxyUseDefaultCredentials;
                     BypassList = $ProxyBypassList;
                 }
-                $HttpClient = New-Object System.Net.Http.HttpClient -ArgumentList $HttpClientHandler
+            }       
+            if ($DisableRedirect)
+            {
+                $HttpClientHandler.AllowAutoRedirect = $false
+            }
+            $HttpClient = New-Object System.Net.Http.HttpClient -ArgumentList $HttpClientHandler
+
+            # Default timeout for HttpClient is 100s.  For a 50 MB download this assumes 500 KB/s average, any less will time out
+            # Defaulting to 20 minutes allows it to work over much slower connections.
+            $HttpClient.Timeout = New-TimeSpan -Seconds $DownloadTimeout
+
+            if ($HeaderOnly){
+                $completionOption = [System.Net.Http.HttpCompletionOption]::ResponseHeadersRead
             }
             else {
-
-                $HttpClient = New-Object System.Net.Http.HttpClient
+                $completionOption = [System.Net.Http.HttpCompletionOption]::ResponseContentRead
             }
-            # Default timeout for HttpClient is 100s.  For a 50 MB download this assumes 500 KB/s average, any less will time out
-            # 20 minutes allows it to work over much slower connections.
-            $HttpClient.Timeout = New-TimeSpan -Minutes 20
-            $Task = $HttpClient.GetAsync("${Uri}${FeedCredential}").ConfigureAwait("false");
+
+            if ($DisableFeedCredential) {
+                $UriWithCredential = $Uri
+            }
+            else {
+                $UriWithCredential = "${Uri}${FeedCredential}"
+            }
+
+            $Task = $HttpClient.GetAsync("$UriWithCredential", $completionOption).ConfigureAwait("false");
             $Response = $Task.GetAwaiter().GetResult();
 
-            if (($null -eq $Response) -or (-not ($Response.IsSuccessStatusCode))) {
+            if (($null -eq $Response) -or ((-not $HeaderOnly) -and (-not ($Response.IsSuccessStatusCode)))) {
                 # The feed credential is potentially sensitive info. Do not log FeedCredential to console output.
                 $DownloadException = [System.Exception] "Unable to download $Uri."
 
                 if ($null -ne $Response) {
                     $DownloadException.Data["StatusCode"] = [int] $Response.StatusCode
                     $DownloadException.Data["ErrorMessage"] = "Unable to download $Uri. Returned HTTP status code: " + $DownloadException.Data["StatusCode"]
+
+                    if (404 -eq [int] $Response.StatusCode)
+                    {
+                        $cts.Cancel()
+                    }
                 }
 
                 throw $DownloadException
@@ -323,11 +406,22 @@ function GetHTTPResponse([Uri] $Uri)
             throw $DownloadException
         }
         finally {
-             if ($HttpClient -ne $null) {
+             if ($null -ne $HttpClient) {
                 $HttpClient.Dispose()
             }
         }
-    })
+    }
+
+    try {
+        return Invoke-With-Retry $downloadScript $cts.Token
+    }
+    finally
+    {
+        if ($null -ne $cts)
+        {
+            $cts.Dispose()
+        }
+    }
 }
 
 function Get-Latest-Version-Info([string]$AzureFeed, [string]$Channel) {
@@ -349,6 +443,9 @@ function Get-Latest-Version-Info([string]$AzureFeed, [string]$Channel) {
     else {
         throw "Invalid value for `$Runtime"
     }
+
+    Say-Verbose "Constructed latest.version URL: $VersionFileUrl"
+
     try {
         $Response = GetHTTPResponse -Uri $VersionFileUrl
     }
@@ -411,7 +508,7 @@ function Get-Specific-Version-From-Version([string]$AzureFeed, [string]$Channel,
     Say-Invocation $MyInvocation
 
     if (-not $JSonFile) {
-        if ($Version.ToLower() -eq "latest") {
+        if ($Version.ToLowerInvariant() -eq "latest") {
             $LatestVersionInfo = Get-Latest-Version-Info -AzureFeed $AzureFeed -Channel $Channel
             return $LatestVersionInfo.Version
         }
@@ -478,58 +575,116 @@ function Get-LegacyDownload-Link([string]$AzureFeed, [string]$SpecificVersion, [
     return $PayloadURL
 }
 
-function Get-Product-Version([string]$AzureFeed, [string]$SpecificVersion) {
+function Get-Product-Version([string]$AzureFeed, [string]$SpecificVersion, [string]$PackageDownloadLink) {
     Say-Invocation $MyInvocation
 
-    if ($Runtime -eq "dotnet") {
-        $ProductVersionTxtURL = "$AzureFeed/Runtime/$SpecificVersion/productVersion.txt"
-    }
-    elseif ($Runtime -eq "aspnetcore") {
-        $ProductVersionTxtURL = "$AzureFeed/aspnetcore/Runtime/$SpecificVersion/productVersion.txt"
-    }
-    elseif ($Runtime -eq "windowsdesktop") {
-        # The windows desktop runtime is part of the core runtime layout prior to 5.0
-        $ProductVersionTxtURL = "$AzureFeed/Runtime/$SpecificVersion/productVersion.txt"
-        if ($SpecificVersion -match '^(\d+)\.(.*)')
-        {
-            $majorVersion = [int]$Matches[1]
-            if ($majorVersion -ge 5)
-            {
-                $ProductVersionTxtURL = "$AzureFeed/WindowsDesktop/$SpecificVersion/productVersion.txt"
+    # Try to get the version number, using the productVersion.txt file located next to the installer file.
+    $ProductVersionTxtURLs = (Get-Product-Version-Url $AzureFeed $SpecificVersion $PackageDownloadLink -Flattened $true),
+                             (Get-Product-Version-Url $AzureFeed $SpecificVersion $PackageDownloadLink -Flattened $false)
+    
+    Foreach ($ProductVersionTxtURL in $ProductVersionTxtURLs) {
+        Say-Verbose "Checking for the existence of $ProductVersionTxtURL"
+
+        try {
+            $productVersionResponse = GetHTTPResponse($productVersionTxtUrl)
+
+            if ($productVersionResponse.StatusCode -eq 200) {
+                $productVersion = $productVersionResponse.Content.ReadAsStringAsync().Result.Trim()
+                if ($productVersion -ne $SpecificVersion)
+                {
+                    Say "Using alternate version $productVersion found in $ProductVersionTxtURL"
+                }
+                return $productVersion
             }
+            else {
+                Say-Verbose "Got StatusCode $($productVersionResponse.StatusCode) when trying to get productVersion.txt at $productVersionTxtUrl."
+            }
+        } 
+        catch {
+            Say-Verbose "Could not read productVersion.txt at $productVersionTxtUrl (Exception: '$($_.Exception.Message)'. )"
         }
     }
-    elseif (-not $Runtime) {
-        $ProductVersionTxtURL = "$AzureFeed/Sdk/$SpecificVersion/productVersion.txt"
-    }
-    else {
-        throw "Invalid value '$Runtime' specified for `$Runtime"
+
+    # Getting the version number with productVersion.txt has failed. Try parsing the download link for a version number.
+    if ([string]::IsNullOrEmpty($PackageDownloadLink))
+    {
+        Say-Verbose "Using the default value '$SpecificVersion' as the product version."
+        return $SpecificVersion
     }
 
-    Say-Verbose "Checking for existence of $ProductVersionTxtURL"
+    $productVersion = Get-ProductVersionFromDownloadLink $PackageDownloadLink $SpecificVersion
+    return $productVersion
+}
 
-    try {
-        $productVersionResponse = GetHTTPResponse($productVersionTxtUrl)
+function Get-Product-Version-Url([string]$AzureFeed, [string]$SpecificVersion, [string]$PackageDownloadLink, [bool]$Flattened) {
+    Say-Invocation $MyInvocation
 
-        if ($productVersionResponse.StatusCode -eq 200) {
-            $productVersion = $productVersionResponse.Content.ReadAsStringAsync().Result.Trim()
-            if ($productVersion -ne $SpecificVersion)
-            {
-                Say "Using alternate version $productVersion found in $ProductVersionTxtURL"
-            }
+    $majorVersion=$null
+    if ($SpecificVersion -match '^(\d+)\.(.*)') {
+        $majorVersion = $Matches[1] -as[int]
+    }
 
-            return $productVersion
+    $pvFileName='productVersion.txt'
+    if($Flattened) {
+        if(-not $Runtime) {
+            $pvFileName='sdk-productVersion.txt'
+        }
+        elseif($Runtime -eq "dotnet") {
+            $pvFileName='runtime-productVersion.txt'
         }
         else {
-            Say-Verbose "Got StatusCode $($productVersionResponse.StatusCode) trying to get productVersion.txt at $productVersionTxtUrl, so using default value of $SpecificVersion"
-            $productVersion = $SpecificVersion
+            $pvFileName="$Runtime-productVersion.txt"
         }
-    } catch {
-        Say-Verbose "Could not read productVersion.txt at $productVersionTxtUrl, so using default value of $SpecificVersion (Exception: '$($_.Exception.Message)' )"
-        $productVersion = $SpecificVersion
     }
 
-    return $productVersion
+    if ([string]::IsNullOrEmpty($PackageDownloadLink)) {
+        if ($Runtime -eq "dotnet") {
+            $ProductVersionTxtURL = "$AzureFeed/Runtime/$SpecificVersion/$pvFileName"
+        }
+        elseif ($Runtime -eq "aspnetcore") {
+            $ProductVersionTxtURL = "$AzureFeed/aspnetcore/Runtime/$SpecificVersion/$pvFileName"
+        }
+        elseif ($Runtime -eq "windowsdesktop") {
+            # The windows desktop runtime is part of the core runtime layout prior to 5.0
+            $ProductVersionTxtURL = "$AzureFeed/Runtime/$SpecificVersion/$pvFileName"
+            if ($majorVersion -ne $null -and $majorVersion -ge 5) {
+                $ProductVersionTxtURL = "$AzureFeed/WindowsDesktop/$SpecificVersion/$pvFileName"
+            }
+        }
+        elseif (-not $Runtime) {
+            $ProductVersionTxtURL = "$AzureFeed/Sdk/$SpecificVersion/$pvFileName"
+        }
+        else {
+            throw "Invalid value '$Runtime' specified for `$Runtime"
+        }
+    }
+    else {
+        $ProductVersionTxtURL = $PackageDownloadLink.Substring(0, $PackageDownloadLink.LastIndexOf("/"))  + "/$pvFileName"
+    }
+
+    Say-Verbose "Constructed productVersion link: $ProductVersionTxtURL"
+
+    return $ProductVersionTxtURL
+}
+
+function Get-ProductVersionFromDownloadLink([string]$PackageDownloadLink, [string]$SpecificVersion)
+{
+    Say-Invocation $MyInvocation
+
+    #product specific version follows the product name
+    #for filename 'dotnet-sdk-3.1.404-win-x64.zip': the product version is 3.1.400
+    $filename = $PackageDownloadLink.Substring($PackageDownloadLink.LastIndexOf("/") + 1)
+    $filenameParts = $filename.Split('-')
+    if ($filenameParts.Length -gt 2)
+    {
+        $productVersion = $filenameParts[2]
+        Say-Verbose "Extracted product version '$productVersion' from download link '$PackageDownloadLink'."
+    }
+    else {
+        Say-Verbose "Using the default value '$SpecificVersion' as the product version."
+        $productVersion = $SpecificVersion
+    }
+    return $productVersion 
 }
 
 function Get-User-Share-Path() {
@@ -702,15 +857,150 @@ function Prepend-Sdk-InstallRoot-To-Path([string]$InstallRoot, [string]$BinFolde
     }
 }
 
+function Get-AkaMSDownloadLink([string]$Channel, [string]$Quality, [bool]$Internal, [string]$Product, [string]$Architecture) {
+    Say-Invocation $MyInvocation 
+
+    #quality is not supported for LTS or current channel
+    if (![string]::IsNullOrEmpty($Quality) -and (@("LTS", "current") -contains $Channel)) {
+        $Quality = ""
+        Say-Warning "Specifying quality for current or LTS channel is not supported, the quality will be ignored."
+    }
+    Say-Verbose "Retrieving primary payload URL from aka.ms link for channel: '$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 (-not [string]::IsNullOrEmpty($Quality)) {
+        $akaMsLink +="/$Quality"
+    }
+    $akaMsLink +="/$Product-win-$Architecture.zip"
+    Say-Verbose  "Constructed aka.ms link: '$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 $true
+        Say-Verbose "Received response:`n$Response"
+
+        if ([string]::IsNullOrEmpty($Response)) {
+            Say-Verbose "The link '$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)) {
+                    Say-Verbose "The link '$akaMsLink' is not valid: server returned 301 (Moved Permanently), but the headers do not contain the redirect location."
+                    return $null
+                }
+
+                Say-Verbose "The redirect location retrieved: '$akaMsDownloadLink'."
+                # This may yet be a link to another redirection. Attempt to retrieve the page again.
+                $akaMsLink = $akaMsDownloadLink
+                continue
+            }
+            catch {
+                Say-Verbose "The link '$akaMsLink' is not valid: failed to get redirect location."
+                return $null
+            }
+        }
+        elseif ((($Response.StatusCode -lt 300) -or ($Response.StatusCode -ge 400)) -and (-not [string]::IsNullOrEmpty($akaMsDownloadLink)))
+        {
+            # Redirections have ended.
+            return $akaMsDownloadLink
+        }
+
+        Say-Verbose "The link '$akaMsLink' is not valid: failed to retrieve the redirection location."
+        return $null
+    }
+
+    Say-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
+
+}
+
 Say "Note that the intended use of this script is for Continuous Integration (CI) scenarios, where:"
 Say "- The SDK needs to be installed without user interaction and without admin rights."
 Say "- The SDK installation doesn't need to persist across multiple CI runs."
 Say "To set up a development environment or to run apps, use installers rather than this script. Visit https://dotnet.microsoft.com/download to get the installer.`r`n"
 
+if ($Internal -and [string]::IsNullOrWhitespace($FeedCredential)) {
+    $message = "Provide credentials via -FeedCredential parameter."
+    if ($DryRun) {
+        Say-Warning "$message"
+    } else {
+        throw "$message"
+    }
+}
+
+#FeedCredential should start with "?", for it to be added to the end of the link.
+#adding "?" at the beginning of the FeedCredential if needed.
+if ((![string]::IsNullOrWhitespace($FeedCredential)) -and ($FeedCredential[0] -ne '?')) {
+    $FeedCredential = "?" + $FeedCredential
+}
+
 $CLIArchitecture = Get-CLIArchitecture-From-Architecture $Architecture
-$SpecificVersion = Get-Specific-Version-From-Version -AzureFeed $AzureFeed -Channel $Channel -Version $Version -JSonFile $JSonFile
-$DownloadLink, $EffectiveVersion = Get-Download-Link -AzureFeed $AzureFeed -SpecificVersion $SpecificVersion -CLIArchitecture $CLIArchitecture
-$LegacyDownloadLink = Get-LegacyDownload-Link -AzureFeed $AzureFeed -SpecificVersion $SpecificVersion -CLIArchitecture $CLIArchitecture
+$NormalizedQuality = Get-NormalizedQuality $Quality
+Say-Verbose "Normalized quality: '$NormalizedQuality'"
+$NormalizedChannel = Get-NormalizedChannel $Channel
+Say-Verbose "Normalized channel: '$NormalizedChannel'"
+$NormalizedProduct = Get-NormalizedProduct $Runtime
+Say-Verbose "Normalized product: '$NormalizedProduct'"
+$DownloadLink = $null
+
+#try to get download location from aka.ms link
+#not applicable when exact version is specified via command or json file
+if ([string]::IsNullOrEmpty($JSonFile) -and ($Version -eq "latest")) {
+    $AkaMsDownloadLink = Get-AkaMSDownloadLink -Channel $NormalizedChannel -Quality $NormalizedQuality -Internal $Internal -Product $NormalizedProduct -Architecture $CLIArchitecture
+   
+    if ([string]::IsNullOrEmpty($AkaMsDownloadLink)){
+        if (-not [string]::IsNullOrEmpty($NormalizedQuality)) {
+            # if quality is specified - exit with error - there is no fallback approach
+            Say-Error "Failed to locate the latest version in the channel '$NormalizedChannel' with '$NormalizedQuality' quality for '$NormalizedProduct', os: 'win', architecture: '$CLIArchitecture'."
+            Say-Error "Refer to: https://aka.ms/dotnet-os-lifecycle for information on .NET Core support."
+            throw "aka.ms link resolution failure"
+        }
+        Say-Verbose "Falling back to latest.version file approach."
+    }
+    else {
+        Say-Verbose "Retrieved primary named payload URL from aka.ms link: '$AkaMsDownloadLink'."
+        $DownloadLink = $AkaMsDownloadLink
+        Say-Verbose  "Downloading using legacy url will not be attempted."
+        $LegacyDownloadLink = $null
+
+        #get version from the path
+        $pathParts = $DownloadLink.Split('/')
+        if ($pathParts.Length -ge 2) { 
+            $SpecificVersion = $pathParts[$pathParts.Length - 2]
+            Say-Verbose "Version: '$SpecificVersion'."
+        }
+        else {
+            Say-Error "Failed to extract the version from download link '$DownloadLink'."
+        }
+
+        #retrieve effective (product) version
+        $EffectiveVersion = Get-Product-Version -AzureFeed $AzureFeed -SpecificVersion $SpecificVersion -PackageDownloadLink $DownloadLink
+        Say-Verbose "Product version: '$EffectiveVersion'."
+    }
+}
+
+if ([string]::IsNullOrEmpty($DownloadLink)) {
+    $SpecificVersion = Get-Specific-Version-From-Version -AzureFeed $AzureFeed -Channel $Channel -Version $Version -JSonFile $JSonFile
+    $DownloadLink, $EffectiveVersion = Get-Download-Link -AzureFeed $AzureFeed -SpecificVersion $SpecificVersion -CLIArchitecture $CLIArchitecture
+    $LegacyDownloadLink = Get-LegacyDownload-Link -AzureFeed $AzureFeed -SpecificVersion $SpecificVersion -CLIArchitecture $CLIArchitecture
+}
+
 
 $InstallRoot = Resolve-Installation-Path $InstallDir
 Say-Verbose "InstallRoot: $InstallRoot"
@@ -718,9 +1008,9 @@ $ScriptName = $MyInvocation.MyCommand.Name
 
 if ($DryRun) {
     Say "Payload URLs:"
-    Say "Primary named payload URL: $DownloadLink"
+    Say "Primary named payload URL: ${DownloadLink}"
     if ($LegacyDownloadLink) {
-        Say "Legacy named payload URL: $LegacyDownloadLink"
+        Say "Legacy named payload URL: ${LegacyDownloadLink}"
     }
     $RepeatableCommand = ".\$ScriptName -Version `"$SpecificVersion`" -InstallDir `"$InstallRoot`" -Architecture `"$CLIArchitecture`""
     if ($Runtime -eq "dotnet") {
@@ -729,11 +1019,20 @@ if ($DryRun) {
     elseif ($Runtime -eq "aspnetcore") {
        $RepeatableCommand+=" -Runtime `"aspnetcore`""
     }
+
+    if (-not [string]::IsNullOrEmpty($NormalizedQuality))
+    {
+        $RepeatableCommand+=" -Quality `"$NormalizedQuality`""
+    }
+
     foreach ($key in $MyInvocation.BoundParameters.Keys) {
-        if (-not (@("Architecture","Channel","DryRun","InstallDir","Runtime","SharedRuntime","Version") -contains $key)) {
+        if (-not (@("Architecture","Channel","DryRun","InstallDir","Runtime","SharedRuntime","Version","Quality","FeedCredential") -contains $key)) {
             $RepeatableCommand+=" -$key `"$($MyInvocation.BoundParameters[$key])`""
         }
     }
+    if ($MyInvocation.BoundParameters.Keys -contains "FeedCredential") {
+        $RepeatableCommand+=" -FeedCredential `"<feedCredential>`""
+    }
     Say "Repeatable invocation: $RepeatableCommand"
     if ($SpecificVersion -ne $EffectiveVersion)
     {
@@ -779,9 +1078,16 @@ if ($isAssetInstalled) {
 
 New-Item -ItemType Directory -Force -Path $InstallRoot | Out-Null
 
-$installDrive = $((Get-Item $InstallRoot).PSDrive.Name);
-$diskInfo = Get-PSDrive -Name $installDrive
-if ($diskInfo.Free / 1MB -le 100) {
+$installDrive = $((Get-Item $InstallRoot -Force).PSDrive.Name);
+$diskInfo = $null
+try{
+    $diskInfo = Get-PSDrive -Name $installDrive
+}
+catch{
+    Say-Warning "Failed to check the disk space. Installation will continue, but it may fail if you do not have enough disk space."
+}
+
+if ( ($diskInfo -ne $null) -and ($diskInfo.Free / 1MB -le 100)) {
     throw "There is not enough disk space on drive ${installDrive}:"
 }
 
@@ -901,43 +1207,44 @@ Prepend-Sdk-InstallRoot-To-Path -InstallRoot $InstallRoot -BinFolderRelativePath
 Say "Note that the script does not resolve dependencies during installation."
 Say "To check the list of dependencies, go to https://docs.microsoft.com/dotnet/core/install/windows#dependencies"
 Say "Installation finished"
+
 # SIG # Begin signature block
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@@ -977,119 +1284,119 @@ Say "Installation finished"
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 # SIG # End signature block

externals/install-dotnet.sh

@@ -24,7 +24,7 @@ exec 3>&1
 # See if stdout is a terminal
 if [ -t 1 ] && command -v tput > /dev/null; then
     # see if it supports colors
-    ncolors=$(tput colors)
+    ncolors=$(tput colors || echo 0)
     if [ -n "$ncolors" ] && [ $ncolors -ge 8 ]; then
         bold="$(tput bold       || echo)"
         normal="$(tput sgr0     || echo)"
@@ -224,7 +224,7 @@ get_legacy_os_name() {
 machine_has() {
     eval $invocation
 
-    hash "$1" > /dev/null 2>&1
+    command -v "$1" > /dev/null 2>&1
     return $?
 }
 
@@ -368,6 +368,75 @@ get_normalized_os() {
     return 0
 }
 
+# args:
+# quality - $1
+get_normalized_quality() {
+    eval $invocation
+
+    local quality="$(to_lowercase "$1")"
+    if [ ! -z "$quality" ]; then
+        case "$quality" in
+            daily | signed | validated | preview)
+                echo "$quality"
+                return 0
+                ;;
+            ga)
+                #ga quality is available without specifying quality, so normalizing it to empty
+                return 0
+                ;;
+            *)
+                say_err "'$quality' is not a supported value for --quality option. Supported values are: daily, signed, validated, preview, ga. If you think this is a bug, report it at https://github.com/dotnet/install-scripts/issues."
+                return 1
+                ;;
+        esac
+    fi
+    return 0
+}
+
+# args:
+# channel - $1
+get_normalized_channel() {
+    eval $invocation
+
+    local channel="$(to_lowercase "$1")"
+
+    if [[ $channel == release/* ]]; then
+        say_warning 'Using branch name with -Channel option is no longer supported with newer releases. Use -Quality option with a channel in X.Y format instead.';
+    fi
+
+    if [ ! -z "$channel" ]; then
+        case "$channel" in
+            lts)
+                echo "LTS"
+                return 0
+                ;;
+            *)
+                echo "$channel"
+                return 0
+                ;;
+        esac
+    fi
+
+    return 0
+}
+
+# args:
+# runtime - $1
+get_normalized_product() {
+    eval $invocation
+
+    local runtime="$(to_lowercase "$1")"
+    if [[ "$runtime" == "dotnet" ]]; then
+        product="dotnet-runtime"
+    elif [[ "$runtime" == "aspnetcore" ]]; then
+        product="aspnetcore-runtime"
+    elif [ -z "$runtime" ]; then
+        product="dotnet-sdk"
+    fi
+    echo "$product"
+    return 0
+}
+
 # The version text returned from the feeds is a 1-line or 2-line string:
 # For the SDK and the dotnet runtime (2 lines):
 # Line 1: # commit_hash
@@ -541,43 +610,131 @@ construct_download_link() {
 # args:
 # azure_feed - $1
 # specific_version - $2
+# download link - $3 (optional)
 get_specific_product_version() {
     # If we find a 'productVersion.txt' at the root of any folder, we'll use its contents
     # to resolve the version of what's in the folder, superseding the specified version.
+    # if 'productVersion.txt' is missing but download link is already available, product version will be taken from download link
     eval $invocation
 
     local azure_feed="$1"
     local specific_version="${2//[$'\t\r\n']}"
-    local specific_product_version=$specific_version
+    local package_download_link=""
+    if [ $# -gt 2  ]; then
+        local package_download_link="$3"
+    fi
+    local specific_product_version=null
+
+    # Try to get the version number, using the productVersion.txt file located next to the installer file.
+    local download_links=($(get_specific_product_version_url "$azure_feed" "$specific_version" true "$package_download_link")
+        $(get_specific_product_version_url "$azure_feed" "$specific_version" false "$package_download_link"))
+
+    for download_link in "${download_links[@]}"
+    do
+        say_verbose "Checking for the existence of $download_link"
+
+        if machine_has "curl"
+        then
+            specific_product_version=$(curl -s --fail "${download_link}${feed_credential}")
+            if [ $? = 0 ]; then
+                echo "${specific_product_version//[$'\t\r\n']}"
+                return 0
+            fi
+        elif machine_has "wget"
+        then
+            specific_product_version=$(wget -qO- "${download_link}${feed_credential}")
+            if [ $? = 0 ]; then
+                echo "${specific_product_version//[$'\t\r\n']}"
+                return 0
+            fi
+        fi
+    done
+    
+    # Getting the version number with productVersion.txt has failed. Try parsing the download link for a version number.
+    say_verbose "Failed to get the version using productVersion.txt file. Download link will be parsed instead."
+    specific_product_version="$(get_product_specific_version_from_download_link "$package_download_link" "$specific_version")"
+    echo "${specific_product_version//[$'\t\r\n']}"
+    return 0
+}
+
+# args:
+# azure_feed - $1
+# specific_version - $2
+# is_flattened - $3
+# download link - $4 (optional)
+get_specific_product_version_url() {
+    eval $invocation
+
+    local azure_feed="$1"
+    local specific_version="$2"
+    local is_flattened="$3"
+    local package_download_link=""
+    if [ $# -gt 3  ]; then
+        local package_download_link="$4"
+    fi
+
+    local pvFileName="productVersion.txt"
+    if [ "$is_flattened" = true ]; then
+        if [ -z "$runtime" ]; then
+            pvFileName="sdk-productVersion.txt"
+        elif [[ "$runtime" == "dotnet" ]]; then
+            pvFileName="runtime-productVersion.txt"
+        else
+            pvFileName="$runtime-productVersion.txt"
+        fi
+    fi
 
     local download_link=null
-    if [[ "$runtime" == "dotnet" ]]; then
-        download_link="$azure_feed/Runtime/$specific_version/productVersion.txt${feed_credential}"
-    elif [[ "$runtime" == "aspnetcore" ]]; then
-        download_link="$azure_feed/aspnetcore/Runtime/$specific_version/productVersion.txt${feed_credential}"
-    elif [ -z "$runtime" ]; then
-        download_link="$azure_feed/Sdk/$specific_version/productVersion.txt${feed_credential}"
+
+    if [ -z "$package_download_link" ]; then
+        if [[ "$runtime" == "dotnet" ]]; then
+            download_link="$azure_feed/Runtime/$specific_version/${pvFileName}"
+        elif [[ "$runtime" == "aspnetcore" ]]; then
+            download_link="$azure_feed/aspnetcore/Runtime/$specific_version/${pvFileName}"
+        elif [ -z "$runtime" ]; then
+            download_link="$azure_feed/Sdk/$specific_version/${pvFileName}"
+        else
+            return 1
+        fi
     else
-        return 1
+        download_link="${package_download_link%/*}/${pvFileName}"
     fi
 
-    if machine_has "curl"
-    then
-        specific_product_version=$(curl -s --fail "$download_link")
-        if [ $? -ne 0 ]
-        then
-            specific_product_version=$specific_version
-        fi
-    elif machine_has "wget"
-    then
-        specific_product_version=$(wget -qO- "$download_link")
-        if [ $? -ne 0 ]
-        then
-            specific_product_version=$specific_version
-        fi
-    fi
-    specific_product_version="${specific_product_version//[$'\t\r\n']}"
+    say_verbose "Constructed productVersion link: $download_link"
+    echo "$download_link"
+    return 0
+}
 
+# args:
+# download link - $1
+# specific version - $2
+get_product_specific_version_from_download_link()
+{
+    eval $invocation
+
+    local download_link="$1"
+    local specific_version="$2"
+    local specific_product_version="" 
+
+    if [ -z "$download_link" ]; then
+        echo "$specific_version"
+        return 0
+    fi
+
+    #get filename
+    filename="${download_link##*/}"
+
+    #product specific version follows the product name
+    #for filename 'dotnet-sdk-3.1.404-linux-x64.tar.gz': the product version is 3.1.404
+    IFS='-'
+    read -ra filename_elems <<< "$filename"
+    count=${#filename_elems[@]}
+    if [[ "$count" -gt 2 ]]; then
+        specific_product_version="${filename_elems[2]}"
+    else
+        specific_product_version=$specific_version
+    fi
+    unset IFS;
     echo "$specific_product_version"
     return 0
 }
@@ -711,19 +868,62 @@ extract_dotnet_package() {
     return 0
 }
 
+# args:
+# remote_path - $1
+# disable_feed_credential - $2
+get_http_header()
+{
+    eval $invocation
+    local remote_path="$1"
+    local disable_feed_credential="$2"
+
+    local failed=false
+    local response
+    if machine_has "curl"; then
+        get_http_header_curl $remote_path $disable_feed_credential || failed=true
+    elif machine_has "wget"; then
+        get_http_header_wget $remote_path $disable_feed_credential || failed=true
+    else
+        failed=true
+    fi
+    if [ "$failed" = true ]; then
+        say_verbose "Failed to get HTTP header: '$remote_path'."
+        return 1
+    fi
+    return 0
+}
+
+# args:
+# remote_path - $1
+# disable_feed_credential - $2
 get_http_header_curl() {
     eval $invocation
     local remote_path="$1"
-    remote_path_with_credential="${remote_path}${feed_credential}"
+    local disable_feed_credential="$2"
+
+    remote_path_with_credential="$remote_path"
+    if [ "$disable_feed_credential" = false ]; then
+        remote_path_with_credential+="$feed_credential"
+    fi
+
     curl_options="-I -sSL --retry 5 --retry-delay 2 --connect-timeout 15 "
     curl $curl_options "$remote_path_with_credential" || return 1
     return 0
 }
 
+# args:
+# remote_path - $1
+# disable_feed_credential - $2
 get_http_header_wget() {
     eval $invocation
     local remote_path="$1"
-    remote_path_with_credential="${remote_path}${feed_credential}"
+    local disable_feed_credential="$2"
+
+    remote_path_with_credential="$remote_path"
+    if [ "$disable_feed_credential" = false ]; then
+        remote_path_with_credential+="$feed_credential"
+    fi
+
     wget_options="-q -S --spider --tries 5 --waitretry 2 --connect-timeout 15 "
     wget $wget_options "$remote_path_with_credential" 2>&1 || return 1
     return 0
@@ -763,7 +963,7 @@ download() {
 
         say "Download attempt #$attempts has failed: $http_code $download_error_msg"
         say "Attempt #$((attempts+1)) will start in $((attempts*10)) seconds."
-        sleep $((attempts*20))
+        sleep $((attempts*10))
     done
 
 
@@ -783,6 +983,7 @@ downloadcurl() {
     local remote_path="$1"
     local out_path="${2:-}"
     # Append feed_credential as late as possible before calling curl to avoid logging feed_credential
+    # Avoid passing URI with credentials to functions: note, most of them echoing parameters of invocation in verbose output.
     local remote_path_with_credential="${remote_path}${feed_credential}"
     local curl_options="--retry 20 --retry-delay 2 --connect-timeout 15 -sSL -f --create-dirs "
     local failed=false
@@ -792,7 +993,8 @@ downloadcurl() {
         curl $curl_options -o "$out_path" "$remote_path_with_credential" || failed=true
     fi
     if [ "$failed" = true ]; then
-        local response=$(get_http_header_curl $remote_path_with_credential)
+        local disable_feed_credential=false
+        local response=$(get_http_header_curl $remote_path $disable_feed_credential)
         http_code=$( echo "$response" | awk '/^HTTP/{print $2}' | tail -1 )
         download_error_msg="Unable to download $remote_path."
         if  [[ $http_code != 2* ]]; then
@@ -822,7 +1024,8 @@ downloadwget() {
         wget $wget_options -O "$out_path" "$remote_path_with_credential" || failed=true
     fi
     if [ "$failed" = true ]; then
-        local response=$(get_http_header_wget $remote_path_with_credential)
+        local disable_feed_credential=false
+        local response=$(get_http_header_wget $remote_path $disable_feed_credential)
         http_code=$( echo "$response" | awk '/^  HTTP/{print $2}' | tail -1 )
         download_error_msg="Unable to download $remote_path."
         if  [[ $http_code != 2* ]]; then
@@ -834,15 +1037,115 @@ downloadwget() {
     return 0
 }
 
+get_download_link_from_aka_ms() {    
+    eval $invocation
+
+    #quality is not supported for LTS or current channel
+    if [[ ! -z "$normalized_quality"  && ("$normalized_channel" == "LTS" || "$normalized_channel" == "current") ]]; then
+        normalized_quality=""
+        say_warning "Specifying quality for current or LTS channel is not supported, the quality will be ignored."
+    fi
+
+    say_verbose "Retrieving primary payload URL from aka.ms for channel: '$normalized_channel', quality: '$normalized_quality', product: '$normalized_product', os: '$normalized_os', architecture: '$normalized_architecture'." 
+
+    #construct aka.ms link
+    aka_ms_link="https://aka.ms/dotnet"
+    if  [ "$internal" = true ]; then
+        aka_ms_link="$aka_ms_link/internal"
+    fi
+    aka_ms_link="$aka_ms_link/$normalized_channel"
+    if [[ ! -z "$normalized_quality" ]]; then
+        aka_ms_link="$aka_ms_link/$normalized_quality"
+    fi
+    aka_ms_link="$aka_ms_link/$normalized_product-$normalized_os-$normalized_architecture.tar.gz"
+    say_verbose "Constructed aka.ms link: '$aka_ms_link'."
+
+    #get HTTP response
+    #do not pass credentials as a part of the $aka_ms_link and do not apply credentials in the get_http_header function
+    #otherwise the redirect link would have credentials as well
+    #it would result in applying credentials twice to the resulting link and thus breaking it, and in echoing credentials to the output as a part of redirect link
+    disable_feed_credential=true
+    response="$(get_http_header $aka_ms_link $disable_feed_credential)"
+
+    say_verbose "Received response: $response"
+    # Get results of all the redirects.
+    http_codes=$( echo "$response" | awk '$1 ~ /^HTTP/ {print $2}' )
+    # They all need to be 301, otherwise some links are broken (except for the last, which is not a redirect but 200 or 404).
+    broken_redirects=$( echo "$http_codes" | sed '$d' | grep -v '301' )
+
+    # All HTTP codes are 301 (Moved Permanently), the redirect link exists.
+    if [[ -z "$broken_redirects" ]]; then
+        aka_ms_download_link=$( echo "$response" | awk '$1 ~ /^Location/{print $2}' | tail -1 | tr -d '\r')
+
+        if [[ -z "$aka_ms_download_link" ]]; then
+            say_verbose "The aka.ms link '$aka_ms_link' is not valid: failed to get redirect location."
+            return 1
+        fi
+
+        say_verbose "The redirect location retrieved: '$aka_ms_download_link'."
+        return 0
+    else
+        say_verbose "The aka.ms link '$aka_ms_link' is not valid: received HTTP code: $(echo "$broken_redirects" | paste -sd "," -)."
+        return 1
+    fi
+}
+
 calculate_vars() {
     eval $invocation
     valid_legacy_download_link=true
 
+    #normalize input variables
     normalized_architecture="$(get_normalized_architecture_from_architecture "$architecture")"
-    say_verbose "normalized_architecture=$normalized_architecture"
-
+    say_verbose "Normalized architecture: '$normalized_architecture'."
     normalized_os="$(get_normalized_os "$user_defined_os")"
-    say_verbose "normalized_os=$normalized_os"
+    say_verbose "Normalized OS: '$normalized_os'."
+    normalized_quality="$(get_normalized_quality "$quality")"
+    say_verbose "Normalized quality: '$normalized_quality'."
+    normalized_channel="$(get_normalized_channel "$channel")"
+    say_verbose "Normalized channel: '$normalized_channel'."
+    normalized_product="$(get_normalized_product "$runtime")"
+    say_verbose "Normalized product: '$normalized_product'."
+
+    #try to get download location from aka.ms link
+    #not applicable when exact version is specified via command or json file
+    normalized_version="$(to_lowercase "$version")"
+    if [[ -z "$json_file" && "$normalized_version" == "latest" ]]; then
+
+            valid_aka_ms_link=true;
+            get_download_link_from_aka_ms || valid_aka_ms_link=false
+            
+            if [ "$valid_aka_ms_link" == false ]; then
+                # if quality is specified - exit with error - there is no fallback approach
+                if [ ! -z "$normalized_quality" ]; then
+                    say_err "Failed to locate the latest version in the channel '$normalized_channel' with '$normalized_quality' quality for '$normalized_product', os: '$normalized_os', architecture: '$normalized_architecture'."
+                    say_err "Refer to: https://aka.ms/dotnet-os-lifecycle for information on .NET Core support."
+                    return 1
+                fi
+                say_verbose "Falling back to latest.version file approach."
+            else
+                say_verbose "Retrieved primary payload URL from aka.ms link: '$aka_ms_download_link'."
+                download_link=$aka_ms_download_link
+
+                say_verbose "Downloading using legacy url will not be attempted."
+                valid_legacy_download_link=false
+
+                #get version from the path
+                IFS='/'
+                read -ra pathElems <<< "$download_link"
+                count=${#pathElems[@]}
+                specific_version="${pathElems[count-2]}"
+                unset IFS;
+                say_verbose "Version: '$specific_version'."
+
+                #Retrieve product specific version
+                specific_product_version="$(get_specific_product_version "$azure_feed" "$specific_version" "$download_link")"
+                say_verbose "Product specific version: '$specific_product_version'."
+  
+                install_root="$(resolve_installation_path "$install_dir")"
+                say_verbose "InstallRoot: '$install_root'."
+                return 
+            fi
+    fi
 
     specific_version="$(get_specific_version_from_version "$azure_feed" "$channel" "$normalized_architecture" "$version" "$json_file")"
     specific_product_version="$(get_specific_product_version "$azure_feed" "$specific_version")"
@@ -1011,6 +1314,8 @@ feed_credential=""
 verbose=false
 runtime=""
 runtime_id=""
+quality=""
+internal=false
 override_non_versioned_files=true
 non_dynamic_parameters=""
 user_defined_os=""
@@ -1027,6 +1332,14 @@ do
             shift
             version="$1"
             ;;
+        -q|--quality|-[Qq]uality)
+            shift
+            quality="$1"
+            ;;
+        --internal|-[Ii]nternal)
+            internal=true
+            non_dynamic_parameters+=" $name"
+            ;;
         -i|--install-dir|-[Ii]nstall[Dd]ir)
             shift
             install_dir="$1"
@@ -1084,7 +1397,9 @@ do
         --feed-credential|-[Ff]eed[Cc]redential)
             shift
             feed_credential="$1"
-            non_dynamic_parameters+=" $name "\""$1"\"""
+            #feed_credential should start with "?", for it to be added to the end of the link.
+            #adding "?" at the beginning of the feed_credential if needed.
+            [[ -z "$(echo $feed_credential)" ]] || [[ $feed_credential == \?* ]] || feed_credential="?$feed_credential"
             ;;
         --runtime-id|-[Rr]untime[Ii]d)
             shift
@@ -1116,15 +1431,26 @@ do
             echo "          - LTS - most current supported release"
             echo "          - 2-part version in a format A.B - represents a specific release"
             echo "              examples: 2.0; 1.0"
-            echo "          - Branch name"
-            echo "              examples: release/2.0.0; Master"
-            echo "          Note: The version parameter overrides the channel parameter."
+            echo "          - 3-part version in a format A.B.Cxx - represents a specific SDK release"
+            echo "              examples: 5.0.1xx, 5.0.2xx."
+            echo "              Supported since 5.0 release"
+            echo "          Note: The version parameter overrides the channel parameter when any version other than `latest` is used."
             echo "  -v,--version <VERSION>         Use specific VERSION, Defaults to \`$version\`."
             echo "      -Version"
             echo "          Possible values:"
             echo "          - latest - most latest build on specific channel"
             echo "          - 3-part version in a format A.B.C - represents specific version of build"
             echo "              examples: 2.0.0-preview2-006120; 1.1.0"
+            echo "  -q,--quality <quality>         Download the latest build of specified quality in the channel."
+            echo "      -Quality"
+            echo "          The possible values are: daily, signed, validated, preview, GA."
+            echo "          Works only in combination with channel. Not applicable for current and LTS channels and will be ignored if those channels are used." 
+            echo "          For SDK use channel in A.B.Cxx format. Using quality for SDK together with channel in A.B format is not supported." 
+            echo "          Supported since 5.0 release." 
+            echo "          Note: The version parameter overrides the channel parameter when any version other than `latest` is used, and therefore overrides the quality."
+            echo "  --internal,-Internal               Download internal builds. Requires providing credentials via --feed-credential parameter."
+            echo "  --feed-credential <FEEDCREDENTIAL> Token to access Azure feed. Used as a query string to append to the Azure feed."
+            echo "      -FeedCredential                This parameter typically is not specified."
             echo "  -i,--install-dir <DIR>             Install under specified location (see Install Location below)"
             echo "      -InstallDir"
             echo "  --architecture <ARCHITECTURE>      Architecture of dotnet binaries to be installed, Defaults to \`$architecture\`."
@@ -1145,7 +1471,6 @@ do
             echo "  --verbose,-Verbose                 Display diagnostics information."
             echo "  --azure-feed,-AzureFeed            Azure feed location. Defaults to $azure_feed, This parameter typically is not changed by the user."
             echo "  --uncached-feed,-UncachedFeed      Uncached feed location. This parameter typically is not changed by the user."
-            echo "  --feed-credential,-FeedCredential  Azure feed shared access token. This parameter typically is not specified."
             echo "  --skip-non-versioned-files         Skips non-versioned files if they already exist, such as the dotnet executable."
             echo "      -SkipNonVersionedFiles"
             echo "  --no-cdn,-NoCdn                    Disable downloading from the Azure CDN, and use the uncached feed directly."
@@ -1186,23 +1511,44 @@ say "- The SDK needs to be installed without user interaction and without admin
 say "- The SDK installation doesn't need to persist across multiple CI runs."
 say "To set up a development environment or to run apps, use installers rather than this script. Visit https://dotnet.microsoft.com/download to get the installer.\n"
 
+if [ "$internal" = true ] && [ -z "$(echo $feed_credential)" ]; then
+    message="Provide credentials via --feed-credential parameter."
+    if [ "$dry_run" = true ]; then
+        say_warning "$message"
+    else
+        say_err "$message"
+        exit 1
+    fi
+fi
+
 check_min_reqs
 calculate_vars
 script_name=$(basename "$0")
 
 if [ "$dry_run" = true ]; then
     say "Payload URLs:"
-    say "Primary named payload URL: $download_link"
+    say "Primary named payload URL: ${download_link}"
     if [ "$valid_legacy_download_link" = true ]; then
-        say "Legacy named payload URL: $legacy_download_link"
+        say "Legacy named payload URL: ${legacy_download_link}"
     fi
     repeatable_command="./$script_name --version "\""$specific_version"\"" --install-dir "\""$install_root"\"" --architecture "\""$normalized_architecture"\"" --os "\""$normalized_os"\"""
+    
+    if [ ! -z "$normalized_quality" ]; then
+        repeatable_command+=" --quality "\""$normalized_quality"\"""
+    fi
+
     if [[ "$runtime" == "dotnet" ]]; then
         repeatable_command+=" --runtime "\""dotnet"\"""
     elif [[ "$runtime" == "aspnetcore" ]]; then
         repeatable_command+=" --runtime "\""aspnetcore"\"""
     fi
+
     repeatable_command+="$non_dynamic_parameters"
+
+    if [ -n "$feed_credential" ]; then
+        repeatable_command+=" --feed-credential "\""<feed_credential>"\"""
+    fi
+
     say "Repeatable invocation: $repeatable_command"
     exit 0
 fi
@@ -1219,4 +1565,4 @@ fi
 
 say "Note that the script does not resolve dependencies during installation."
 say "To check the list of dependencies, go to https://docs.microsoft.com/dotnet/core/install, select your operating system and check the \"Dependencies\" section."
-say "Installation finished successfully."
+say "Installation finished successfully."

package.json

@@ -30,7 +30,7 @@
   "author": "GitHub",
   "license": "MIT",
   "dependencies": {
-    "@actions/core": "^1.2.6",
+    "@actions/core": "^1.6.0",
     "@actions/exec": "^1.0.4",
     "@actions/github": "^1.1.0",
     "@actions/http-client": "^1.0.8",
@@ -40,15 +40,15 @@
     "xmlbuilder": "^13.0.2"
   },
   "devDependencies": {
-    "@types/jest": "^25.2.3",
+    "@types/jest": "^27.0.2",
     "@types/node": "^12.12.62",
     "@types/semver": "^6.2.2",
     "@zeit/ncc": "^0.21.1",
-    "husky": "^4.3.0",
-    "jest": "^26.4.2",
-    "jest-circus": "^26.4.2",
+    "husky": "^7.0.2",
+    "jest": "^27.2.5",
+    "jest-circus": "^27.2.5",
     "prettier": "^1.19.1",
-    "ts-jest": "^26.4.0",
+    "ts-jest": "^27.0.5",
     "typescript": "^3.9.7",
     "wget-improved": "^3.2.1"
   },

src/installer.ts

@@ -165,6 +165,12 @@ export class DotnetCoreInstaller {
       });
     }
 
+    if (resultCode != 0) {
+      throw new Error(`Failed to install dotnet ${resultCode}. ${output}`);
+    }
+  }
+
+  static addToPath() {
     if (process.env['DOTNET_INSTALL_DIR']) {
       core.addPath(process.env['DOTNET_INSTALL_DIR']);
       core.exportVariable('DOTNET_ROOT', process.env['DOTNET_INSTALL_DIR']);
@@ -189,10 +195,6 @@ export class DotnetCoreInstaller {
     }
 
     console.log(process.env['PATH']);
-
-    if (resultCode != 0) {
-      throw new Error(`Failed to install dotnet ${resultCode}. ${output}`);
-    }
   }
 
   // versionInfo - versionInfo of the SDK/Runtime
@@ -283,7 +285,14 @@ export class DotnetCoreInstaller {
       );
     }
 
-    return releasesInfo[0]['releases.json'];
+    const releaseInfo = releasesInfo[0];
+    if (releaseInfo['support-phase'] === 'eol') {
+      core.warning(
+        `${releaseInfo['product']} ${releaseInfo['channel-version']} is no longer supported and will not receive security updates in the future. Please refer to https://aka.ms/dotnet-core-support for more information about the .NET support policy.`
+      );
+    }
+
+    return releaseInfo['releases.json'];
   }
 
   private version: string;

src/setup-dotnet.ts

@@ -13,32 +13,29 @@ export async function run() {
     // If a valid version still can't be identified, nothing will be installed.
     // Proxy, auth, (etc) are still set up, even if no version is identified
     //
-    let version = core.getInput('dotnet-version');
-    if (!version) {
+    let versions = core.getMultilineInput('dotnet-version');
+    if (!versions.length) {
       // Try to fall back to global.json
       core.debug('No version found, trying to find version from global.json');
       const globalJsonPath = path.join(process.cwd(), 'global.json');
       if (fs.existsSync(globalJsonPath)) {
-        const globalJson = JSON.parse(
-          // .trim() is necessary to strip BOM https://github.com/nodejs/node/issues/20649
-          fs.readFileSync(globalJsonPath, {encoding: 'utf8'}).trim()
-        );
-        if (globalJson.sdk && globalJson.sdk.version) {
-          version = globalJson.sdk.version;
-        }
+        versions.push(getVersionFromGlobalJson(globalJsonPath));
       }
     }
 
-    if (version) {
+    if (versions.length) {
       const includePrerelease: boolean =
         (core.getInput('include-prerelease') || 'false').toLowerCase() ===
         'true';
-
-      const dotnetInstaller = new installer.DotnetCoreInstaller(
-        version,
-        includePrerelease
-      );
-      await dotnetInstaller.installDotnet();
+      let dotnetInstaller!: installer.DotnetCoreInstaller;
+      for (const version of versions) {
+        dotnetInstaller = new installer.DotnetCoreInstaller(
+          version,
+          includePrerelease
+        );
+        await dotnetInstaller.installDotnet();
+      }
+      installer.DotnetCoreInstaller.addToPath();
     }
 
     const sourceUrl: string = core.getInput('source-url');
@@ -54,4 +51,21 @@ export async function run() {
   }
 }
 
+function getVersionFromGlobalJson(globalJsonPath: string): string {
+  let version: string = '';
+  const globalJson = JSON.parse(
+    // .trim() is necessary to strip BOM https://github.com/nodejs/node/issues/20649
+    fs.readFileSync(globalJsonPath, {encoding: 'utf8'}).trim()
+  );
+  if (globalJson.sdk && globalJson.sdk.version) {
+    version = globalJson.sdk.version;
+    const rollForward = globalJson.sdk.rollForward;
+    if (rollForward && rollForward === 'latestFeature') {
+      const [major, minor] = version.split('.');
+      version = `${major}.${minor}`;
+    }
+  }
+  return version;
+}
+
 run();