From 353f1a3064d256f2d31465ab86259edd78c59cb6 Mon Sep 17 00:00:00 2001
From: Matthew Leibowitz <mattleibow@live.com>
Date: Wed, 13 Nov 2024 14:47:08 +0800
Subject: [PATCH] Download using new APIs (#25800)

* Download using new APIs

mono is no longer found on machines

* fix
---
 eng/cake/dotnet.cake     | 16 +++++++--------
 eng/cake/helpers.cake    | 44 +++++++++++++++++++++++++++++++++++++++-
 eng/devices/windows.cake |  2 +-
 3 files changed, 51 insertions(+), 11 deletions(-)

diff --git a/eng/cake/dotnet.cake b/eng/cake/dotnet.cake
index 7d348b6f826f..03de4f1c7dda 100644
--- a/eng/cake/dotnet.cake
+++ b/eng/cake/dotnet.cake
@@ -345,7 +345,7 @@ Task("dotnet-pack-maui")
 
 Task("dotnet-pack-additional")
     .WithCriteria(RunPackTarget())
-    .Does(() =>
+    .Does(async () =>
     {
         // Download some additional symbols that need to be archived along with the maui symbols:
         //  - _NativeAssets.windows
@@ -353,16 +353,14 @@ Task("dotnet-pack-additional")
         //     - libHarfBuzzSharp.pdb
         var assetsDir = $"./artifacts/additional-assets";
         var nativeAssetsVersion = XmlPeek("./eng/Versions.props", "/Project/PropertyGroup/_SkiaSharpNativeAssetsVersion");
-        NuGetInstall("_NativeAssets.windows", new NuGetInstallSettings
-        {
-            Version = nativeAssetsVersion,
-            ExcludeVersion = true,
-            OutputDirectory = assetsDir,
-            Source = new[] { "https://pkgs.dev.azure.com/xamarin/public/_packaging/SkiaSharp/nuget/v3/index.json" },
-        });
+        await DownloadNuGetPackageAsync(
+            "_NativeAssets.windows",
+            nativeAssetsVersion,
+            assetsDir,
+            "https://pkgs.dev.azure.com/xamarin/public/_packaging/SkiaSharp/nuget/v3/index.json");
+        Zip(assetsDir, $"{assetsDir}.zip");
         foreach (var nupkg in GetFiles($"{assetsDir}/**/*.nupkg"))
             DeleteFile(nupkg);
-        Zip(assetsDir, $"{assetsDir}.zip");
     });
 
 Task("dotnet-pack-library-packs")
diff --git a/eng/cake/helpers.cake b/eng/cake/helpers.cake
index d299c3d7421c..5b3c1c7b4070 100644
--- a/eng/cake/helpers.cake
+++ b/eng/cake/helpers.cake
@@ -1,3 +1,13 @@
+#addin "nuget:?package=NuGet.Packaging&version=6.7.0"
+#addin "nuget:?package=NuGet.Protocol&version=6.7.0"
+
+using System.Threading.Tasks;
+using NuGet.Common;
+using NuGet.Configuration;
+using NuGet.Protocol;
+using NuGet.Protocol.Core.Types;
+using NuGet.Versioning;
+
 bool isCleanSet = HasArgument("clean") || IsTarget("clean");
 
 Task("Clean")
@@ -108,4 +118,36 @@ bool IsTarget(string target) =>
     Argument<string>("target", "Default").Equals(target, StringComparison.InvariantCultureIgnoreCase);
 
 bool TargetStartsWith(string target) =>
-    Argument<string>("target", "Default").StartsWith(target, StringComparison.InvariantCultureIgnoreCase);
\ No newline at end of file
+    Argument<string>("target", "Default").StartsWith(target, StringComparison.InvariantCultureIgnoreCase);
+
+public async Task DownloadNuGetPackageAsync(string packageId, string version, string outputDirectory, string feedUri)
+{
+    // Create a source repository
+    var repository = Repository.Factory.GetCoreV3(feedUri);
+    
+    // Find the package
+    var resource = await repository.GetResourceAsync<FindPackageByIdResource>();
+    var packageVersion = NuGetVersion.Parse(version);
+    var cacheContext = new SourceCacheContext();
+    
+    // Set up logging (optional, use NullLogger if you don't need logging)
+    ILogger logger = NullLogger.Instance;
+
+    // Download the package to the output directory
+    EnsureDirectoryExists(outputDirectory);
+    var packagePath = System.IO.Path.Combine(outputDirectory, $"{packageId}.{version}.nupkg");
+    
+    using (var fileStream = new FileStream(packagePath, FileMode.Create, FileAccess.Write, FileShare.None))
+    {
+        // Download package
+        var success = await resource.CopyNupkgToStreamAsync(
+            packageId, packageVersion, fileStream, cacheContext, logger, default);
+
+        if (!success)
+        {
+            throw new Exception("Failed to download the package.");
+        }
+
+        Information("Package '{0} v{1}' downloaded successfully to {2}", packageId, version, packagePath);
+    }
+}
diff --git a/eng/devices/windows.cake b/eng/devices/windows.cake
index 12591722040b..a6db0f33c91a 100644
--- a/eng/devices/windows.cake
+++ b/eng/devices/windows.cake
@@ -96,7 +96,7 @@ Task("GenerateMsixCert")
 	{
 		Information("Generating cert");
 		var rsa = RSA.Create();
-		var req = new CertificateRequest("CN=" + certCN, rsa, HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1);
+		var req = new CertificateRequest("CN=" + certCN, rsa, System.Security.Cryptography.HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1);
 
 		req.CertificateExtensions.Add(new X509EnhancedKeyUsageExtension(new OidCollection
 		{