Merge pull request #222 from actions/dependabot/npm_and_yarn/path-parse-1.0.7

Bump path-parse from 1.0.6 to 1.0.7

.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 }}

README.md

@@ -13,7 +13,7 @@ This action sets up a [dotnet core cli](https://github.com/dotnet/cli) environme
 Please Note: GitHub hosted runners have some versions of the .NET SDK
 preinstalled. Installed versions are subject to change. Please refer to the
 documentation
-[software installed on github hosted runners](https://help.github.com/en/actions/reference/software-installed-on-github-hosted-runners)
+[software installed on github hosted runners](https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners#supported-software)
 for .NET SDK versions that are currently available.
 
 # Usage
@@ -23,13 +23,24 @@ See [action.yml](action.yml)
 Basic:
 ```yaml
 steps:
-- uses: actions/checkout@main
+- uses: actions/checkout@v2
 - uses: actions/setup-dotnet@v1
   with:
     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>
 ```
 
+Preview version:
+```yml
+steps:
+- uses: actions/checkout@v2
+- uses: actions/setup-dotnet@v1
+  with:
+    dotnet-version: '6.0.x'
+    include-prerelease: true
+- run: dotnet build <my project>
+```
+
 Matrix Testing:
 ```yaml
 jobs:
@@ -37,7 +48,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        dotnet: [ '2.2.103', '3.0', '3.1.x' ]
+        dotnet: [ '2.1.x', '3.1.x', '5.0.x' ]
     name: Dotnet ${{ matrix.dotnet }} sample
     steps:
       - uses: actions/checkout@v2
@@ -59,7 +70,7 @@ jobs:
       - name: Setup dotnet
         uses: actions/setup-dotnet@v1
         with:
-          dotnet-version: '2.2.103'
+          dotnet-version: '2.1.x'
       - name: Setup dotnet
         uses: actions/setup-dotnet@v1
         with:
@@ -82,10 +93,10 @@ 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
@@ -93,11 +104,21 @@ 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)
@@ -113,7 +134,7 @@ build:
     - uses: actions/checkout@main
     - uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: '3.1.100' # SDK Version to use.
+        dotnet-version: '3.1.x' # SDK Version to use.
 ```
 
 # License

__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__/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__/versionutil.test.ts

@@ -13,6 +13,8 @@ describe('version tests', () => {
   );
 
   each([
+    ['3.x', '3.x'],
+    ['3.*', '3.*'],
     ['3.1.x', '3.1'],
     ['1.1.*', '1.1'],
     ['2.0', '2.0']
@@ -42,7 +44,6 @@ describe('version tests', () => {
     '.2.3',
     '.2.x',
     '1',
-    '2.x',
     '*.*.1',
     '*.1',
     '*.',

action.yml

@@ -1,5 +1,5 @@
 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
@@ -13,6 +13,9 @@ inputs:
     description: 'Optional OWNER for using packages from GitHub Package Registry organizations/users other than the current repository''s owner. Only used if a GPR URL is also provided in source-url'
   config-file:
     description: 'Optional NuGet.config location, if your NuGet.config isn''t located in the root of the repo.'
+  include-prerelease:
+    description: 'Whether prerelease versions should be matched with non-exact versions (for example 5.0.0-preview.6 being matched by 5, 5.0, 5.x or 5.0.x). Defaults to false if not provided.'
+    required: False
 runs:
   using: 'node12'
   main: 'dist/index.js'

dist/index.js

@@ -4840,11 +4840,26 @@ const github = __importStar(__webpack_require__(469));
 const xmlbuilder = __importStar(__webpack_require__(312));
 const xmlParser = __importStar(__webpack_require__(989));
 function configAuthentication(feedUrl, existingFileLocation = '', processRoot = process.cwd()) {
-    const existingNuGetConfig = path.resolve(processRoot, existingFileLocation == '' ? 'nuget.config' : existingFileLocation);
+    const existingNuGetConfig = path.resolve(processRoot, existingFileLocation === ''
+        ? getExistingNugetConfig(processRoot)
+        : existingFileLocation);
     const tempNuGetConfig = path.resolve(processRoot, '../', 'nuget.config');
     writeFeedToFile(feedUrl, existingNuGetConfig, tempNuGetConfig);
 }
 exports.configAuthentication = configAuthentication;
+function isValidKey(key) {
+    return /^[\w\-\.]+$/i.test(key);
+}
+function getExistingNugetConfig(processRoot) {
+    const defaultConfigName = 'nuget.config';
+    const configFileNames = fs
+        .readdirSync(processRoot)
+        .filter(filename => filename.toLowerCase() === defaultConfigName);
+    if (configFileNames.length) {
+        return configFileNames[0];
+    }
+    return defaultConfigName;
+}
 function writeFeedToFile(feedUrl, existingFileLocation, tempFileLocation) {
     console.log(`dotnet-auth: Finding any source references in ${existingFileLocation}, writing a new temporary configuration file with credentials to ${tempFileLocation}`);
     let xml;
@@ -4910,8 +4925,8 @@ function writeFeedToFile(feedUrl, existingFileLocation, tempFileLocation) {
     }
     xml = xml.ele('packageSourceCredentials');
     sourceKeys.forEach(key => {
-        if (key.indexOf(' ') > -1) {
-            throw new Error("This action currently can't handle source names with spaces. Remove the space from your repo's NuGet.config and try again.");
+        if (!isValidKey(key)) {
+            throw new Error("Source name can contain letters, numbers, and '-', '_', '.' symbols only. Please, fix source name in NuGet.config and try again.");
         }
         xml = xml
             .ele(key)
@@ -7814,14 +7829,13 @@ function run() {
                 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(fs.readFileSync(globalJsonPath, { encoding: 'utf8' }));
-                    if (globalJson.sdk && globalJson.sdk.version) {
-                        version = globalJson.sdk.version;
-                    }
+                    version = getVersionFromGlobalJson(globalJsonPath);
                 }
             }
             if (version) {
-                const dotnetInstaller = new installer.DotnetCoreInstaller(version);
+                const includePrerelease = (core.getInput('include-prerelease') || 'false').toLowerCase() ===
+                    'true';
+                const dotnetInstaller = new installer.DotnetCoreInstaller(version, includePrerelease);
                 yield dotnetInstaller.installDotnet();
             }
             const sourceUrl = core.getInput('source-url');
@@ -7838,6 +7852,21 @@ function run() {
     });
 }
 exports.run = run;
+function getVersionFromGlobalJson(globalJsonPath) {
+    let version = '';
+    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();
 
 
@@ -16868,15 +16897,16 @@ class DotNetVersionInfo {
             this.isExactVersionSet = true;
             return;
         }
-        //Note: No support for previews when using generic
-        let parts = version.split('.');
+        const parts = version.split('.');
         if (parts.length < 2 || parts.length > 3)
             this.throwInvalidVersionFormat();
         if (parts.length == 3 && parts[2] !== 'x' && parts[2] !== '*') {
             this.throwInvalidVersionFormat();
         }
-        let major = this.getVersionNumberOrThrow(parts[0]);
-        let minor = this.getVersionNumberOrThrow(parts[1]);
+        const major = this.getVersionNumberOrThrow(parts[0]);
+        const minor = ['x', '*'].includes(parts[1])
+            ? parts[1]
+            : this.getVersionNumberOrThrow(parts[1]);
         this.fullversion = major + '.' + minor;
     }
     getVersionNumberOrThrow(input) {
@@ -16894,7 +16924,7 @@ class DotNetVersionInfo {
         }
     }
     throwInvalidVersionFormat() {
-        throw 'Invalid version format! Supported: 1.2.3, 1.2, 1.2.x, 1.2.*';
+        throw new Error('Invalid version format! Supported: 1.2.3, 1.2, 1.2.x, 1.2.*');
     }
     /**
      * If true exacatly one version should be resolved
@@ -16908,8 +16938,9 @@ class DotNetVersionInfo {
 }
 exports.DotNetVersionInfo = DotNetVersionInfo;
 class DotnetCoreInstaller {
-    constructor(version) {
+    constructor(version, includePrerelease = false) {
         this.version = version;
+        this.includePrerelease = includePrerelease;
     }
     installDotnet() {
         return __awaiter(this, void 0, void 0, function* () {
@@ -16997,7 +17028,7 @@ class DotnetCoreInstaller {
             }
             console.log(process.env['PATH']);
             if (resultCode != 0) {
-                throw `Failed to install dotnet ${resultCode}. ${output}`;
+                throw new Error(`Failed to install dotnet ${resultCode}. ${output}`);
             }
         });
     }
@@ -17016,16 +17047,24 @@ class DotnetCoreInstaller {
             const releasesResult = releasesResponse.result || {};
             let releasesInfo = releasesResult['releases'];
             releasesInfo = releasesInfo.filter((releaseInfo) => {
-                return (semver.satisfies(releaseInfo['sdk']['version'], versionInfo.version()) ||
-                    semver.satisfies(releaseInfo['sdk']['version-display'], versionInfo.version()));
+                return (semver.satisfies(releaseInfo['sdk']['version'], versionInfo.version(), {
+                    includePrerelease: this.includePrerelease
+                }) ||
+                    semver.satisfies(releaseInfo['sdk']['version-display'], versionInfo.version(), {
+                        includePrerelease: this.includePrerelease
+                    }));
             });
             // Exclude versions that are newer than the latest if using not exact
             let latestSdk = releasesResult['latest-sdk'];
-            releasesInfo = releasesInfo.filter((releaseInfo) => semver.lte(releaseInfo['sdk']['version'], latestSdk));
+            releasesInfo = releasesInfo.filter((releaseInfo) => semver.lte(releaseInfo['sdk']['version'], latestSdk, {
+                includePrerelease: this.includePrerelease
+            }));
             // Sort for latest version
-            releasesInfo = releasesInfo.sort((a, b) => semver.rcompare(a['sdk']['version'], b['sdk']['version']));
+            releasesInfo = releasesInfo.sort((a, b) => semver.rcompare(a['sdk']['version'], b['sdk']['version'], {
+                includePrerelease: this.includePrerelease
+            }));
             if (releasesInfo.length == 0) {
-                throw `Could not find dotnet core version. Please ensure that specified version ${versionInfo.inputVersion} is valid.`;
+                throw new Error(`Could not find dotnet core version. Please ensure that specified version ${versionInfo.inputVersion} is valid.`);
             }
             let release = releasesInfo[0];
             return release['sdk']['version'];
@@ -17046,7 +17085,7 @@ class DotnetCoreInstaller {
                 return versionParts[0] == sdkParts[0];
             });
             if (releasesInfo.length === 0) {
-                throw `Could not find info for version ${versionParts.join('.')} at ${DotNetCoreIndexUrl}`;
+                throw new Error(`Could not find info for version ${versionParts.join('.')} at ${DotNetCoreIndexUrl}`);
             }
             return releasesInfo[0]['releases.json'];
         });

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
-# MIIjjwYJKoZIhvcNAQcCoIIjgDCCI3wCAQExDzANBglghkgBZQMEAgEFADB5Bgor
+# MIIjhgYJKoZIhvcNAQcCoIIjdzCCI3MCAQExDzANBglghkgBZQMEAgEFADB5Bgor
 # BgEEAYI3AgEEoGswaTA0BgorBgEEAYI3AgEeMCYCAwEAAAQQH8w7YFlLCE63JNLG
-# KX7zUQIBAAIBAAIBAAIBAAIBADAxMA0GCWCGSAFlAwQCAQUABCCNsnhcJvx/hXmM
-# w8KjuvvIMDBFonhg9XJFc1QwfTyH4aCCDYEwggX/MIID56ADAgECAhMzAAABh3IX
-# chVZQMcJAAAAAAGHMA0GCSqGSIb3DQEBCwUAMH4xCzAJBgNVBAYTAlVTMRMwEQYD
+# KX7zUQIBAAIBAAIBAAIBAAIBADAxMA0GCWCGSAFlAwQCAQUABCDO8obeUp97UA1H
+# qy3NSLDwxxLLlEbGxeCzMOcKVT/3eKCCDYEwggX/MIID56ADAgECAhMzAAAB32vw
+# LpKnSrTQAAAAAAHfMA0GCSqGSIb3DQEBCwUAMH4xCzAJBgNVBAYTAlVTMRMwEQYD
 # VQQIEwpXYXNoaW5ndG9uMRAwDgYDVQQHEwdSZWRtb25kMR4wHAYDVQQKExVNaWNy
 # b3NvZnQgQ29ycG9yYXRpb24xKDAmBgNVBAMTH01pY3Jvc29mdCBDb2RlIFNpZ25p
-# bmcgUENBIDIwMTEwHhcNMjAwMzA0MTgzOTQ3WhcNMjEwMzAzMTgzOTQ3WjB0MQsw
+# bmcgUENBIDIwMTEwHhcNMjAxMjE1MjEzMTQ1WhcNMjExMjAyMjEzMTQ1WjB0MQsw
 # CQYDVQQGEwJVUzETMBEGA1UECBMKV2FzaGluZ3RvbjEQMA4GA1UEBxMHUmVkbW9u
 # ZDEeMBwGA1UEChMVTWljcm9zb2Z0IENvcnBvcmF0aW9uMR4wHAYDVQQDExVNaWNy
 # b3NvZnQgQ29ycG9yYXRpb24wggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIB
-# AQDOt8kLc7P3T7MKIhouYHewMFmnq8Ayu7FOhZCQabVwBp2VS4WyB2Qe4TQBT8aB
-# znANDEPjHKNdPT8Xz5cNali6XHefS8i/WXtF0vSsP8NEv6mBHuA2p1fw2wB/F0dH
-# sJ3GfZ5c0sPJjklsiYqPw59xJ54kM91IOgiO2OUzjNAljPibjCWfH7UzQ1TPHc4d
-# weils8GEIrbBRb7IWwiObL12jWT4Yh71NQgvJ9Fn6+UhD9x2uk3dLj84vwt1NuFQ
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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)"
@@ -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-lock.json

@@ -2254,8 +2254,7 @@
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/growly/-/growly-1.3.0.tgz",
       "integrity": "sha1-8QdIy+dq+WS3yWyTxrzCivEgwIE=",
-      "dev": true,
-      "optional": true
+      "dev": true
     },
     "har-schema": {
       "version": "2.0.0",
@@ -2332,9 +2331,9 @@
       }
     },
     "hosted-git-info": {
-      "version": "2.8.8",
-      "resolved": "https://registry.npmjs.org/hosted-git-info/-/hosted-git-info-2.8.8.tgz",
-      "integrity": "sha512-f/wzC2QaWBs7t9IYqB4T3sR1xviIViXJRJTWBlx2Gf3g0Xi5vI7Yy4koXQ1c9OYDGHN9sBy1DQ2AB8fqZBWhUg==",
+      "version": "2.8.9",
+      "resolved": "https://registry.npmjs.org/hosted-git-info/-/hosted-git-info-2.8.9.tgz",
+      "integrity": "sha512-mxIDAb9Lsm6DoOJ7xH+5+X4y1LU/4Hi50L9C5sIswK3JzULS4bwk1FvjdBgvYR4bzT4tuUQiC15FE2f5HbLvYw==",
       "dev": true
     },
     "html-encoding-sniffer": {
@@ -2600,7 +2599,6 @@
       "resolved": "https://registry.npmjs.org/is-wsl/-/is-wsl-2.2.0.tgz",
       "integrity": "sha512-fKzAra0rGJUUBwGBgNkHZuToZcn+TtXHpeCgmkMJMMYx1sQDYaCSyjJBSCa2nH1DGm7s3n1oBnohoVTBaN7Lww==",
       "dev": true,
-      "optional": true,
       "requires": {
         "is-docker": "^2.0.0"
       }
@@ -3405,9 +3403,9 @@
       }
     },
     "lodash": {
-      "version": "4.17.20",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.20.tgz",
-      "integrity": "sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA==",
+      "version": "4.17.21",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
       "dev": true
     },
     "lodash.get": {
@@ -3437,6 +3435,15 @@
       "resolved": "https://registry.npmjs.org/lodash.uniq/-/lodash.uniq-4.5.0.tgz",
       "integrity": "sha1-0CJTc662Uq3BvILklFM5qEJ1R3M="
     },
+    "lru-cache": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
+      "integrity": "sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==",
+      "dev": true,
+      "requires": {
+        "yallist": "^4.0.0"
+      }
+    },
     "macos-release": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/macos-release/-/macos-release-2.3.0.tgz",
@@ -3614,11 +3621,10 @@
       "dev": true
     },
     "node-notifier": {
-      "version": "8.0.0",
-      "resolved": "https://registry.npmjs.org/node-notifier/-/node-notifier-8.0.0.tgz",
-      "integrity": "sha512-46z7DUmcjoYdaWyXouuFNNfUo6eFa94t23c53c+lG/9Cvauk4a98rAUp9672X5dxGdQmLpPzTxzu8f/OeEPaFA==",
+      "version": "8.0.1",
+      "resolved": "https://registry.npmjs.org/node-notifier/-/node-notifier-8.0.1.tgz",
+      "integrity": "sha512-BvEXF+UmsnAfYfoapKM9nGxnP+Wn7P91YfXmrKnfcYCx6VBeoN5Ez5Ogck6I8Bi5k4RlpqRYaw75pAwzX9OphA==",
       "dev": true,
-      "optional": true,
       "requires": {
         "growly": "^1.3.0",
         "is-wsl": "^2.2.0",
@@ -3629,25 +3635,25 @@
       },
       "dependencies": {
         "semver": {
-          "version": "7.3.2",
-          "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.2.tgz",
-          "integrity": "sha512-OrOb32TeeambH6UrhtShmF7CRDqhL6/5XpPNp2DuRH6+9QLw/orhp72j87v8Qa1ScDkvrrBNpZcDejAirJmfXQ==",
+          "version": "7.3.4",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.4.tgz",
+          "integrity": "sha512-tCfb2WLjqFAtXn4KEdxIhalnRtoKFN7nAwj0B3ZXCbQloV2tq5eDbcTmT68JJD3nRJq24/XgxtQKFIpQdtvmVw==",
           "dev": true,
-          "optional": true
+          "requires": {
+            "lru-cache": "^6.0.0"
+          }
         },
         "uuid": {
-          "version": "8.3.0",
-          "resolved": "https://registry.npmjs.org/uuid/-/uuid-8.3.0.tgz",
-          "integrity": "sha512-fX6Z5o4m6XsXBdli9g7DtWgAx+osMsRRZFKma1mIUsLCz6vRvv+pz5VNbyu9UEDzpMWulZfvpgb/cmDXVulYFQ==",
-          "dev": true,
-          "optional": true
+          "version": "8.3.2",
+          "resolved": "https://registry.npmjs.org/uuid/-/uuid-8.3.2.tgz",
+          "integrity": "sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg==",
+          "dev": true
         },
         "which": {
           "version": "2.0.2",
           "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
           "integrity": "sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==",
           "dev": true,
-          "optional": true,
           "requires": {
             "isexe": "^2.0.0"
           }
@@ -3886,9 +3892,9 @@
       "integrity": "sha1-QRyttXTFoUDTpLGRDUDYDMn0C0A="
     },
     "path-parse": {
-      "version": "1.0.6",
-      "resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.6.tgz",
-      "integrity": "sha512-GSmOT2EbHrINBf9SR7CDELwlJ8AENk3Qn7OikK4nFYAu3Ote2+JYNVvkpAEQm3/TLNEJFD/xZJjzyxg3KBWOzw==",
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.7.tgz",
+      "integrity": "sha512-LDJzPVEEEPR+y48z93A0Ed0yXb8pAByGWo/k5YYdYgpY2/2EsOsksJrq7lOHxryrVOn1ejG6oAp8ahvOIQD8sw==",
       "dev": true
     },
     "path-type": {
@@ -4445,8 +4451,7 @@
       "version": "0.1.1",
       "resolved": "https://registry.npmjs.org/shellwords/-/shellwords-0.1.1.tgz",
       "integrity": "sha512-vFwSUfQvqybiICwZY5+DAWIPLKsWO31Q91JSKl3UYv+K5c2QRPzn0qzec6QPu1Qc9eHYItiP3NdJqNVqetYAww==",
-      "dev": true,
-      "optional": true
+      "dev": true
     },
     "signal-exit": {
       "version": "3.0.2",
@@ -5319,9 +5324,9 @@
       }
     },
     "ws": {
-      "version": "7.3.1",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-7.3.1.tgz",
-      "integrity": "sha512-D3RuNkynyHmEJIpD2qrgVkc9DQ23OrN/moAwZX4L8DfvszsJxpjQuUq3LMx6HoYji9fbIOBY18XWBsAux1ZZUA==",
+      "version": "7.5.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.5.0.tgz",
+      "integrity": "sha512-6ezXvzOZupqKj4jUqbQ9tXuJNo+BR2gU8fFRk3XCP3e0G6WT414u5ELe6Y0vtp7kmSJ3F7YWObSNr1ESsgi4vw==",
       "dev": true
     },
     "xml-name-validator": {
@@ -5342,9 +5347,15 @@
       "dev": true
     },
     "y18n": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.1.tgz",
+      "integrity": "sha512-wNcy4NvjMYL8gogWWYAO7ZFWFfHcbdbE57tZO8e4cbpj8tfUcwrwqSl3ad8HxpYWCdXcJUCeKKZS62Av1affwQ==",
+      "dev": true
+    },
+    "yallist": {
       "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",
-      "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+      "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==",
       "dev": true
     },
     "yaml": {

src/authutil.ts

@@ -13,7 +13,9 @@ export function configAuthentication(
 ) {
   const existingNuGetConfig: string = path.resolve(
     processRoot,
-    existingFileLocation == '' ? 'nuget.config' : existingFileLocation
+    existingFileLocation === ''
+      ? getExistingNugetConfig(processRoot)
+      : existingFileLocation
   );
 
   const tempNuGetConfig: string = path.resolve(
@@ -25,6 +27,21 @@ export function configAuthentication(
   writeFeedToFile(feedUrl, existingNuGetConfig, tempNuGetConfig);
 }
 
+function isValidKey(key: string): boolean {
+  return /^[\w\-\.]+$/i.test(key);
+}
+
+function getExistingNugetConfig(processRoot: string) {
+  const defaultConfigName = 'nuget.config';
+  const configFileNames = fs
+    .readdirSync(processRoot)
+    .filter(filename => filename.toLowerCase() === defaultConfigName);
+  if (configFileNames.length) {
+    return configFileNames[0];
+  }
+  return defaultConfigName;
+}
+
 function writeFeedToFile(
   feedUrl: string,
   existingFileLocation: string,
@@ -109,9 +126,9 @@ function writeFeedToFile(
   xml = xml.ele('packageSourceCredentials');
 
   sourceKeys.forEach(key => {
-    if (key.indexOf(' ') > -1) {
+    if (!isValidKey(key)) {
       throw new Error(
-        "This action currently can't handle source names with spaces. Remove the space from your repo's NuGet.config and try again."
+        "Source name can contain letters, numbers, and '-', '_', '.' symbols only. Please, fix source name in NuGet.config and try again."
       );
     }
 

src/installer.ts

@@ -29,8 +29,7 @@ export class DotNetVersionInfo {
       return;
     }
 
-    //Note: No support for previews when using generic
-    let parts: string[] = version.split('.');
+    const parts: string[] = version.split('.');
 
     if (parts.length < 2 || parts.length > 3) this.throwInvalidVersionFormat();
 
@@ -38,8 +37,10 @@ export class DotNetVersionInfo {
       this.throwInvalidVersionFormat();
     }
 
-    let major = this.getVersionNumberOrThrow(parts[0]);
-    let minor = this.getVersionNumberOrThrow(parts[1]);
+    const major = this.getVersionNumberOrThrow(parts[0]);
+    const minor = ['x', '*'].includes(parts[1])
+      ? parts[1]
+      : this.getVersionNumberOrThrow(parts[1]);
 
     this.fullversion = major + '.' + minor;
   }
@@ -60,7 +61,9 @@ export class DotNetVersionInfo {
   }
 
   private throwInvalidVersionFormat() {
-    throw 'Invalid version format! Supported: 1.2.3, 1.2, 1.2.x, 1.2.*';
+    throw new Error(
+      'Invalid version format! Supported: 1.2.3, 1.2, 1.2.x, 1.2.*'
+    );
   }
 
   /**
@@ -76,8 +79,9 @@ export class DotNetVersionInfo {
 }
 
 export class DotnetCoreInstaller {
-  constructor(version: string) {
+  constructor(version: string, includePrerelease: boolean = false) {
     this.version = version;
+    this.includePrerelease = includePrerelease;
   }
 
   public async installDotnet() {
@@ -187,7 +191,7 @@ export class DotnetCoreInstaller {
     console.log(process.env['PATH']);
 
     if (resultCode != 0) {
-      throw `Failed to install dotnet ${resultCode}. ${output}`;
+      throw new Error(`Failed to install dotnet ${resultCode}. ${output}`);
     }
   }
 
@@ -212,13 +216,15 @@ export class DotnetCoreInstaller {
     let releasesInfo: any[] = releasesResult['releases'];
     releasesInfo = releasesInfo.filter((releaseInfo: any) => {
       return (
-        semver.satisfies(
-          releaseInfo['sdk']['version'],
-          versionInfo.version()
-        ) ||
+        semver.satisfies(releaseInfo['sdk']['version'], versionInfo.version(), {
+          includePrerelease: this.includePrerelease
+        }) ||
         semver.satisfies(
           releaseInfo['sdk']['version-display'],
-          versionInfo.version()
+          versionInfo.version(),
+          {
+            includePrerelease: this.includePrerelease
+          }
         )
       );
     });
@@ -227,16 +233,22 @@ export class DotnetCoreInstaller {
     let latestSdk: string = releasesResult['latest-sdk'];
 
     releasesInfo = releasesInfo.filter((releaseInfo: any) =>
-      semver.lte(releaseInfo['sdk']['version'], latestSdk)
+      semver.lte(releaseInfo['sdk']['version'], latestSdk, {
+        includePrerelease: this.includePrerelease
+      })
     );
 
     // Sort for latest version
     releasesInfo = releasesInfo.sort((a, b) =>
-      semver.rcompare(a['sdk']['version'], b['sdk']['version'])
+      semver.rcompare(a['sdk']['version'], b['sdk']['version'], {
+        includePrerelease: this.includePrerelease
+      })
     );
 
     if (releasesInfo.length == 0) {
-      throw `Could not find dotnet core version. Please ensure that specified version ${versionInfo.inputVersion} is valid.`;
+      throw new Error(
+        `Could not find dotnet core version. Please ensure that specified version ${versionInfo.inputVersion} is valid.`
+      );
     }
 
     let release = releasesInfo[0];
@@ -264,15 +276,18 @@ export class DotnetCoreInstaller {
     });
 
     if (releasesInfo.length === 0) {
-      throw `Could not find info for version ${versionParts.join(
-        '.'
-      )} at ${DotNetCoreIndexUrl}`;
+      throw new Error(
+        `Could not find info for version ${versionParts.join(
+          '.'
+        )} at ${DotNetCoreIndexUrl}`
+      );
     }
 
     return releasesInfo[0]['releases.json'];
   }
 
   private version: string;
+  private includePrerelease: boolean;
 }
 
 const DotNetCoreIndexUrl: string =

src/setup-dotnet.ts

@@ -19,17 +19,19 @@ export async function run() {
       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(
-          fs.readFileSync(globalJsonPath, {encoding: 'utf8'})
-        );
-        if (globalJson.sdk && globalJson.sdk.version) {
-          version = globalJson.sdk.version;
-        }
+        version = getVersionFromGlobalJson(globalJsonPath);
       }
     }
 
     if (version) {
-      const dotnetInstaller = new installer.DotnetCoreInstaller(version);
+      const includePrerelease: boolean =
+        (core.getInput('include-prerelease') || 'false').toLowerCase() ===
+        'true';
+
+      const dotnetInstaller = new installer.DotnetCoreInstaller(
+        version,
+        includePrerelease
+      );
       await dotnetInstaller.installDotnet();
     }
 
@@ -46,4 +48,21 @@ 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();