Cross-compile the ASP.NET Core hosts to support ASP.NET Core 2.x on .NET Framework/.NET Core 2.1

eng/Versions.props

@@ -6,13 +6,29 @@
   </PropertyGroup>
 
   <PropertyGroup>
-    <AspNetCoreVersion>3.0.0</AspNetCoreVersion>
+    <AspNetCoreVersion Condition=" '$(TargetFramework)' == 'net461' Or
+                                   '$(TargetFramework)' == 'net472' Or
+                                   '$(TargetFramework)' == 'netstandard2.0' Or
+                                   '$(TargetFramework)' == 'netcoreapp2.1' ">2.1.0</AspNetCoreVersion>
+    <AspNetCoreVersion Condition=" '$(TargetFramework)' == 'netstandard2.1' Or
+                                   '$(TargetFramework)' == 'netcoreapp3.0' ">3.0.0</AspNetCoreVersion>
+  </PropertyGroup>
+
+  <PropertyGroup>
+    <ExtensionsVersion Condition=" '$(TargetFramework)' == 'net461' Or
+                                   '$(TargetFramework)' == 'net472' Or
+                                   '$(TargetFramework)' == 'netcoreapp2.1' Or
+                                   '$(TargetFramework)' == 'netstandard2.0' ">2.1.0</ExtensionsVersion>
+    <ExtensionsVersion Condition=" '$(TargetFramework)' == 'netstandard2.1' Or
+                                   '$(TargetFramework)' == 'netcoreapp3.0' ">3.0.0</ExtensionsVersion>
+  </PropertyGroup>
+
+  <PropertyGroup>
     <BclAsyncInterfacesVersion>1.0.0</BclAsyncInterfacesVersion>
     <BouncyCastleVersion>1.8.5</BouncyCastleVersion>
     <DataAnnotationsVersion>4.4.0</DataAnnotationsVersion>
     <EntityFrameworkVersion>6.3.0</EntityFrameworkVersion>
     <EntityFrameworkCoreVersion>3.0.0</EntityFrameworkCoreVersion>
-    <ExtensionsVersion>3.0.0</ExtensionsVersion>
     <JetBrainsVersion>2019.1.3</JetBrainsVersion>
     <JsonNetVersion>12.0.2</JsonNetVersion>
     <JsonNetBsonVersion>1.0.2</JsonNetBsonVersion>

global.json

@@ -1,6 +1,9 @@
 {
   "tools": {
-    "dotnet": "3.0.100-preview8-013656"
+    "dotnet": "3.0.100-preview8-013656",
+    "runtimes": {
+      "aspnetcore": [ "2.1.13" ]
+    }
   },
 
   "msbuild-sdks": {

samples/Mvc.Client/Mvc.Client.csproj

@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.Authentication.OpenIdConnect" Version="$(AspNetCoreVersion)" />
+    <PackageReference Include="Microsoft.AspNetCore.Authentication.OpenIdConnect" Version="3.0.0" />
   </ItemGroup>
 
 </Project>

samples/Mvc.Server/Mvc.Server.csproj

@@ -16,8 +16,8 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="$(AspNetCoreVersion)" />
+    <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="3.0.0" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="$(EntityFrameworkCoreVersion)" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="3.0.0" />
   </ItemGroup>
 
 </Project>

src/OpenIddict.AspNetCore/OpenIddict.AspNetCore.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <TargetFrameworks>net461;netcoreapp2.1;netcoreapp3.0</TargetFrameworks>
     <IncludeBuildOutput>false</IncludeBuildOutput>
     <IncludeSymbols>false</IncludeSymbols>
   </PropertyGroup>

src/OpenIddict.Server.AspNetCore/OpenIddict.Server.AspNetCore.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <TargetFrameworks>net461;netcoreapp2.1;netcoreapp3.0</TargetFrameworks>
   </PropertyGroup>
 
   <PropertyGroup>
@@ -9,10 +9,16 @@
     <PackageTags>$(PackageTags);server;aspnetcore</PackageTags>
   </PropertyGroup>
 
-  <ItemGroup>
+  <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp3.0' ">
     <FrameworkReference Include="Microsoft.AspNetCore.App" />
   </ItemGroup>
 
+  <ItemGroup Condition=" '$(TargetFramework)' != 'netcoreapp3.0' ">
+    <PackageReference Include="Microsoft.AspNetCore.Authentication" Version="$(AspNetCoreVersion)" />
+    <PackageReference Include="Microsoft.AspNetCore.Diagnostics.Abstractions" Version="$(AspNetCoreVersion)" />
+    <PackageReference Include="Microsoft.Extensions.Caching.Abstractions" Version="$(ExtensionsVersion)" />
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\OpenIddict.Server\OpenIddict.Server.csproj" />
   </ItemGroup>
@@ -22,4 +28,8 @@
     <PackageReference Include="Newtonsoft.Json.Bson" Version="$(JsonNetBsonVersion)" />
   </ItemGroup>
 
+  <PropertyGroup Condition=" '$(TargetFramework)' == 'netcoreapp3.0' ">
+    <DefineConstants>$(DefineConstants);SUPPORTS_STATIC_RANDOM_NUMBER_GENERATOR_METHODS</DefineConstants>
+  </PropertyGroup>
+
 </Project>

src/OpenIddict.Server.AspNetCore/OpenIddictServerAspNetCoreHandlers.Authentication.cs

@@ -207,7 +207,13 @@ namespace OpenIddict.Server.AspNetCore
 
                     // Generate a 256-bit request identifier using a crypto-secure random number generator.
                     var data = new byte[256 / 8];
+
+#if SUPPORTS_STATIC_RANDOM_NUMBER_GENERATOR_METHODS
                     RandomNumberGenerator.Fill(data);
+#else
+                    using var generator = RandomNumberGenerator.Create();
+                    generator.GetBytes(data);
+#endif
 
                     context.Request.RequestId = Base64UrlEncoder.Encode(data);
 

src/OpenIddict.Server.AspNetCore/OpenIddictServerAspNetCoreHandlers.Session.cs

@@ -205,7 +205,13 @@ namespace OpenIddict.Server.AspNetCore
 
                     // Generate a 256-bit request identifier using a crypto-secure random number generator.
                     var data = new byte[256 / 8];
+
+#if SUPPORTS_STATIC_RANDOM_NUMBER_GENERATOR_METHODS
                     RandomNumberGenerator.Fill(data);
+#else
+                    using var generator = RandomNumberGenerator.Create();
+                    generator.GetBytes(data);
+#endif
 
                     context.Request.RequestId = Base64UrlEncoder.Encode(data);
 

src/OpenIddict.Validation.AspNetCore/OpenIddict.Validation.AspNetCore.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <TargetFrameworks>net461;netcoreapp2.1;netcoreapp3.0</TargetFrameworks>
   </PropertyGroup>
 
   <PropertyGroup>
@@ -9,10 +9,14 @@
     <PackageTags>$(PackageTags);validation;aspnetcore</PackageTags>
   </PropertyGroup>
 
-  <ItemGroup>
+  <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp3.0' ">
     <FrameworkReference Include="Microsoft.AspNetCore.App" />
   </ItemGroup>
 
+  <ItemGroup Condition=" '$(TargetFramework)' != 'netcoreapp3.0' ">
+    <PackageReference Include="Microsoft.AspNetCore.Authentication" Version="$(AspNetCoreVersion)" />
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\OpenIddict.Validation\OpenIddict.Validation.csproj" />
   </ItemGroup>

src/OpenIddict.Validation.SystemNetHttp/OpenIddict.Validation.SystemNetHttp.csproj

@@ -20,4 +20,8 @@
     <PackageReference Include="System.Linq.Async" Version="$(LinqAsyncVersion)" />
   </ItemGroup>
 
+  <PropertyGroup Condition=" '$(TargetFramework)' != 'netstandard2.0' ">
+    <DefineConstants>$(DefineConstants);SUPPORTS_SERVICE_PROVIDER_IN_HTTP_MESSAGE_HANDLER_BUILDER</DefineConstants>
+  </PropertyGroup>
+
 </Project>

src/OpenIddict.Validation.SystemNetHttp/OpenIddictValidationSystemNetHttpConfiguration.cs

@@ -21,6 +21,13 @@ namespace OpenIddict.Validation.SystemNetHttp
     public class OpenIddictValidationSystemNetHttpConfiguration : IConfigureOptions<OpenIddictValidationOptions>,
                                                                   IConfigureNamedOptions<HttpClientFactoryOptions>
     {
+#if !SUPPORTS_SERVICE_PROVIDER_IN_HTTP_MESSAGE_HANDLER_BUILDER
+        private readonly IServiceProvider _serviceProvider;
+
+        public OpenIddictValidationSystemNetHttpConfiguration([NotNull] IServiceProvider serviceProvider)
+            => _serviceProvider = serviceProvider;
+#endif
+
         public void Configure([NotNull] OpenIddictValidationOptions options)
         {
             if (options == null)
@@ -61,8 +68,11 @@ namespace OpenIddict.Validation.SystemNetHttp
 
             options.HttpMessageHandlerBuilderActions.Add(builder =>
             {
+#if SUPPORTS_SERVICE_PROVIDER_IN_HTTP_MESSAGE_HANDLER_BUILDER
                 var options = builder.Services.GetRequiredService<IOptionsMonitor<OpenIddictValidationSystemNetHttpOptions>>();
-
+#else
+                var options = _serviceProvider.GetRequiredService<IOptionsMonitor<OpenIddictValidationSystemNetHttpOptions>>();
+#endif
                 var policy = options.CurrentValue.HttpErrorPolicy;
                 if (policy != null)
                 {

test/OpenIddict.Abstractions.Tests/OpenIddict.Abstractions.Tests.csproj

@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.0;net461</TargetFrameworks>
+    <TargetFrameworks>netcoreapp2.1;netcoreapp3.0;net461</TargetFrameworks>
-    <TargetFrameworks Condition=" '$(OS)' != 'Windows_NT' ">netcoreapp3.0</TargetFrameworks>
+    <TargetFrameworks Condition=" '$(OS)' != 'Windows_NT' ">netcoreapp2.1;netcoreapp3.0</TargetFrameworks>
   </PropertyGroup>
 
   <ItemGroup>

test/OpenIddict.Core.Tests/OpenIddict.Core.Tests.csproj

@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.0;net461</TargetFrameworks>
+    <TargetFrameworks>netcoreapp2.1;netcoreapp3.0;net461</TargetFrameworks>
-    <TargetFrameworks Condition=" '$(OS)' != 'Windows_NT' ">netcoreapp3.0</TargetFrameworks>
+    <TargetFrameworks Condition=" '$(OS)' != 'Windows_NT' ">netcoreapp2.1;netcoreapp3.0</TargetFrameworks>
   </PropertyGroup>
 
   <ItemGroup>

test/OpenIddict.MongoDb.Tests/OpenIddict.MongoDb.Tests.csproj

@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.0;net461</TargetFrameworks>
+    <TargetFrameworks>netcoreapp2.1;netcoreapp3.0;net461</TargetFrameworks>
-    <TargetFrameworks Condition=" '$(OS)' != 'Windows_NT' ">netcoreapp3.0</TargetFrameworks>
+    <TargetFrameworks Condition=" '$(OS)' != 'Windows_NT' ">netcoreapp2.1;netcoreapp3.0</TargetFrameworks>
     <SignAssembly>false</SignAssembly>
     <PublicSign>false</PublicSign>
   </PropertyGroup>

test/OpenIddict.NHibernate.Tests/OpenIddict.NHibernate.Tests.csproj

@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.0;net461</TargetFrameworks>
+    <TargetFrameworks>netcoreapp2.1;netcoreapp3.0;net461</TargetFrameworks>
-    <TargetFrameworks Condition=" '$(OS)' != 'Windows_NT' ">netcoreapp3.0</TargetFrameworks>
+    <TargetFrameworks Condition=" '$(OS)' != 'Windows_NT' ">netcoreapp2.1;netcoreapp3.0</TargetFrameworks>
   </PropertyGroup>
 
   <ItemGroup>