update latest install scripts

* Use new .NET CDN URL

* Update to latest install-dotnet scripts

* Use signed version of new `install-dotnet.ps1`

* Add fallback to old CDN URL

.github/dependabot.yml

@@ -0,0 +1,22 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
+
+version: 2
+updates:
+  # Enable version updates for npm
+  - package-ecosystem: 'npm'
+    # Look for `package.json` and `lock` files in the `root` directory
+    directory: '/'
+    # Check the npm registry for updates every day (weekdays)
+    schedule:
+      interval: 'weekly'
+
+  # Enable version updates for GitHub Actions
+  - package-ecosystem: 'github-actions'
+    # Workflow files stored in the default location of `.github/workflows`
+    # You don't need to specify `/.github/workflows` for `directory`. You can use `directory: "/"`.
+    directory: '/'
+    schedule:
+      interval: 'weekly'

dist/setup/index.js

@@ -93806,7 +93806,13 @@ class DotnetVersionResolver {
                 allowRetries: true,
                 maxRetries: 3
             });
-            const response = yield httpClient.getJson(DotnetVersionResolver.DotnetCoreIndexUrl);
+            let response;
+            try {
+                response = yield httpClient.getJson(DotnetVersionResolver.DotnetCoreIndexUrl);
+            }
+            catch (error) {
+                response = yield httpClient.getJson(DotnetVersionResolver.DotnetCoreIndexFallbackUrl);
+            }
             const result = response.result || {};
             const releasesInfo = result['releases-index'];
             const releaseInfo = releasesInfo.find(info => {
@@ -93821,7 +93827,8 @@ class DotnetVersionResolver {
     }
 }
 exports.DotnetVersionResolver = DotnetVersionResolver;
-DotnetVersionResolver.DotnetCoreIndexUrl = 'https://dotnetcli.azureedge.net/dotnet/release-metadata/releases-index.json';
+DotnetVersionResolver.DotnetCoreIndexUrl = 'https://builds.dotnet.microsoft.com/dotnet/release-metadata/releases-index.json';
+DotnetVersionResolver.DotnetCoreIndexFallbackUrl = 'https://dotnetcli.azureedge.net/dotnet/release-metadata/releases-index.json';
 class DotnetInstallScript {
     constructor() {
         this.scriptName = utils_1.IS_WINDOWS ? 'install-dotnet.ps1' : 'install-dotnet.sh';

externals/install-dotnet.sh

@@ -1272,6 +1272,61 @@ downloadwget() {
     return 0
 }
 
+extract_stem() {
+    local url="$1"
+    # extract the protocol
+    proto="$(echo $1 | grep :// | sed -e's,^\(.*://\).*,\1,g')"
+    # remove the protocol
+    url="${1/$proto/}"
+    # extract the path (if any) - since we know all of our feeds have a first path segment, we can skip the first one. otherwise we'd use -f2- to get the full path
+    full_path="$(echo $url | grep / | cut -d/ -f2-)"
+    path="$(echo $full_path | cut -d/ -f2-)"
+    echo $path
+}
+
+check_url_exists() {
+    eval $invocation
+    local url="$1"
+
+    local code=""
+    if machine_has "curl"
+    then
+        code=$(curl --head -o /dev/null -w "%{http_code}" -s --fail "$url");
+    elif machine_has "wget"
+    then
+        # get the http response, grab the status code
+        server_response=$(wget -qO- --method=HEAD --server-response "$url" 2>&1)
+        code=$(echo "$server_response" | grep "HTTP/" | awk '{print $2}')
+    fi
+    if [ $code = "200" ]; then
+        return 0
+    else
+        return 1
+    fi
+}
+
+sanitize_redirect_url() {
+    eval $invocation
+
+    local url_stem
+    url_stem=$(extract_stem "$1")
+    say_verbose "Checking configured feeds for the asset at ${yellow:-}$url_stem${normal:-}"
+
+    for feed in "${feeds[@]}"
+    do
+        local trial_url="$feed/$url_stem"
+        say_verbose "Checking ${yellow:-}$trial_url${normal:-}"
+        if check_url_exists "$trial_url"; then
+            say_verbose "Found a match at ${yellow:-}$trial_url${normal:-}"
+            echo "$trial_url"
+            return 0
+        else
+            say_verbose "No match at ${yellow:-}$trial_url${normal:-}"
+        fi
+    done
+    return 1
+}
+
 get_download_link_from_aka_ms() {
     eval $invocation
 
@@ -1324,6 +1379,11 @@ get_download_link_from_aka_ms() {
             return 1
         fi
 
+        sanitized_redirect_url=$(sanitize_redirect_url "$aka_ms_download_link")
+        if [[ -n "$sanitized_redirect_url" ]]; then
+            aka_ms_download_link="$sanitized_redirect_url"
+        fi
+
         say_verbose "The redirect location retrieved: '$aka_ms_download_link'."
         return 0
     else
@@ -1335,23 +1395,16 @@ get_download_link_from_aka_ms() {
 get_feeds_to_use()
 {
     feeds=(
-    "https://dotnetcli.azureedge.net/dotnet"
+    "https://builds.dotnet.microsoft.com/dotnet"
-    "https://dotnetbuilds.azureedge.net/public"
+    "https://ci.dot.net/public"
     )
 
     if [[ -n "$azure_feed" ]]; then
         feeds=("$azure_feed")
     fi
 
-    if [[ "$no_cdn" == "true" ]]; then
+    if [[ -n "$uncached_feed" ]]; then
-        feeds=(
+        feeds=("$uncached_feed")
-        "https://dotnetcli.blob.core.windows.net/dotnet"
-        "https://dotnetbuilds.blob.core.windows.net/public"
-        )
-
-        if [[ -n "$uncached_feed" ]]; then
-            feeds=("$uncached_feed")
-        fi
     fi
 }
 
@@ -1483,7 +1536,7 @@ generate_regular_links() {
         link_types+=("legacy")
     else
         legacy_download_link=""
-        say_verbose "Cound not construct a legacy_download_link; omitting..."
+        say_verbose "Could not construct a legacy_download_link; omitting..."
     fi
 
     #  Check if the SDK version is already installed.
@@ -1586,7 +1639,7 @@ install_dotnet() {
                 say "The resource at $link_type link '$download_link' is not available."
                 ;;
             *)
-                say "Failed to download $link_type link '$download_link': $download_error_msg"
+                say "Failed to download $link_type link '$download_link': $http_code $download_error_msg"
                 ;;
             esac
             rm -f "$zip_path" 2>&1 && say_verbose "Temporary archive file $zip_path was removed"
@@ -1647,7 +1700,6 @@ install_dir="<auto>"
 architecture="<auto>"
 dry_run=false
 no_path=false
-no_cdn=false
 azure_feed=""
 uncached_feed=""
 feed_credential=""
@@ -1720,10 +1772,6 @@ do
             verbose=true
             non_dynamic_parameters+=" $name"
             ;;
-        --no-cdn|-[Nn]o[Cc]dn)
-            no_cdn=true
-            non_dynamic_parameters+=" $name"
-            ;;
         --azure-feed|-[Aa]zure[Ff]eed)
             shift
             azure_feed="$1"
@@ -1828,13 +1876,10 @@ do
             echo "  --verbose,-Verbose                 Display diagnostics information."
             echo "  --azure-feed,-AzureFeed            For internal use only."
             echo "                                     Allows using a different storage to download SDK archives from."
-            echo "                                     This parameter is only used if --no-cdn is false."
             echo "  --uncached-feed,-UncachedFeed      For internal use only."
             echo "                                     Allows using a different storage to download SDK archives from."
-            echo "                                     This parameter is only used if --no-cdn is true."
             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."
             echo "  --jsonfile <JSONFILE>              Determines the SDK version from a user specified global.json file."
             echo "                                     Note: global.json must have a value for 'SDK:Version'"
             echo "  --keep-zip,-KeepZip                If set, downloaded file is kept."

src/installer.ts

@@ -101,9 +101,18 @@ export class DotnetVersionResolver {
       allowRetries: true,
       maxRetries: 3
     });
-    const response = await httpClient.getJson<any>(
+
-      DotnetVersionResolver.DotnetCoreIndexUrl
+    let response;
-    );
+    try {
+      response = await httpClient.getJson<any>(
+        DotnetVersionResolver.DotnetCoreIndexUrl
+      );
+    } catch (error) {
+      response = await httpClient.getJson<any>(
+        DotnetVersionResolver.DotnetCoreIndexFallbackUrl
+      );
+    }
+
     const result = response.result || {};
     const releasesInfo: any[] = result['releases-index'];
 
@@ -122,6 +131,8 @@ export class DotnetVersionResolver {
   }
 
   static DotnetCoreIndexUrl =
+    'https://builds.dotnet.microsoft.com/dotnet/release-metadata/releases-index.json';
+  static DotnetCoreIndexFallbackUrl =
     'https://dotnetcli.azureedge.net/dotnet/release-metadata/releases-index.json';
 }