From ba7bab476501c16e437b0aee71c1be02c3dda176 Mon Sep 17 00:00:00 2001
From: Rob Mensching <rob@firegiant.com>
Date: Mon, 3 May 2021 15:55:48 -0700
Subject: Move Bal.wixext into ext

---
 .../BootstrapperApplicationFactory.cs              |  86 ++++++++++++
 .../BootstrapperSectionGroup.cs                    |  29 +++++
 src/ext/Bal/WixToolset.Mba.Host/Exceptions.cs      | 145 +++++++++++++++++++++
 src/ext/Bal/WixToolset.Mba.Host/HostSection.cs     |  47 +++++++
 src/ext/Bal/WixToolset.Mba.Host/NativeMethods.cs   |  18 +++
 .../SupportedFrameworkElement.cs                   |  47 +++++++
 .../SupportedFrameworkElementCollection.cs         |  36 +++++
 .../WixToolset.Mba.Host/WixToolset.Mba.Host.config |  26 ++++
 .../WixToolset.Mba.Host/WixToolset.Mba.Host.csproj |  54 ++++++++
 .../WixToolset.Mba.Host/WixToolset.Mba.Host.nuspec |  23 ++++
 10 files changed, 511 insertions(+)
 create mode 100644 src/ext/Bal/WixToolset.Mba.Host/BootstrapperApplicationFactory.cs
 create mode 100644 src/ext/Bal/WixToolset.Mba.Host/BootstrapperSectionGroup.cs
 create mode 100644 src/ext/Bal/WixToolset.Mba.Host/Exceptions.cs
 create mode 100644 src/ext/Bal/WixToolset.Mba.Host/HostSection.cs
 create mode 100644 src/ext/Bal/WixToolset.Mba.Host/NativeMethods.cs
 create mode 100644 src/ext/Bal/WixToolset.Mba.Host/SupportedFrameworkElement.cs
 create mode 100644 src/ext/Bal/WixToolset.Mba.Host/SupportedFrameworkElementCollection.cs
 create mode 100644 src/ext/Bal/WixToolset.Mba.Host/WixToolset.Mba.Host.config
 create mode 100644 src/ext/Bal/WixToolset.Mba.Host/WixToolset.Mba.Host.csproj
 create mode 100644 src/ext/Bal/WixToolset.Mba.Host/WixToolset.Mba.Host.nuspec

(limited to 'src/ext/Bal/WixToolset.Mba.Host')

diff --git a/src/ext/Bal/WixToolset.Mba.Host/BootstrapperApplicationFactory.cs b/src/ext/Bal/WixToolset.Mba.Host/BootstrapperApplicationFactory.cs
new file mode 100644
index 00000000..78e68bd9
--- /dev/null
+++ b/src/ext/Bal/WixToolset.Mba.Host/BootstrapperApplicationFactory.cs
@@ -0,0 +1,86 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixToolset.Mba.Host
+{
+    using System;
+    using System.Configuration;
+    using System.Reflection;
+    using System.Runtime.InteropServices;
+    using WixToolset.Mba.Core;
+
+    /// <summary>
+    /// Entry point for the managed host to create and return the BA to the engine.
+    /// </summary>
+    [ClassInterface(ClassInterfaceType.None)]
+    public sealed class BootstrapperApplicationFactory : MarshalByRefObject, IBootstrapperApplicationFactory
+    {
+        /// <summary>
+        /// Creates a new instance of the <see cref="BootstrapperApplicationFactory"/> class.
+        /// Entry point for the MBA host.
+        /// </summary>
+        public BootstrapperApplicationFactory()
+        {
+        }
+
+        /// <summary>
+        /// Loads the bootstrapper application assembly and calls its IBootstrapperApplicationFactory.Create method.
+        /// </summary>
+        /// <param name="pArgs">Pointer to BOOTSTRAPPER_CREATE_ARGS struct.</param>
+        /// <param name="pResults">Pointer to BOOTSTRAPPER_CREATE_RESULTS struct.</param>
+        /// <exception cref="MissingAttributeException">The bootstrapper application assembly
+        /// does not define the <see cref="BootstrapperApplicationFactoryAttribute"/>.</exception>
+        public void Create(IntPtr pArgs, IntPtr pResults)
+        {
+            // Get the wix.boostrapper section group to get the name of the bootstrapper application assembly to host.
+            var section = ConfigurationManager.GetSection("wix.bootstrapper/host") as HostSection;
+            if (null == section)
+            {
+                throw new MissingAttributeException(); // TODO: throw a more specific exception than this.
+            }
+
+            // Load the BA's IBootstrapperApplicationFactory.
+            var baFactoryType = BootstrapperApplicationFactory.GetBAFactoryTypeFromAssembly(section.AssemblyName);
+            var baFactory = (IBootstrapperApplicationFactory)Activator.CreateInstance(baFactoryType);
+            if (null == baFactory)
+            {
+                throw new InvalidBootstrapperApplicationFactoryException();
+            }
+
+            baFactory.Create(pArgs, pResults);
+        }
+
+        /// <summary>
+        /// Locates the <see cref="BootstrapperApplicationFactoryAttribute"/> and returns the specified type.
+        /// </summary>
+        /// <param name="assemblyName">The assembly that defines the IBootstrapperApplicationFactory implementation.</param>
+        /// <returns>The bootstrapper application factory <see cref="Type"/>.</returns>
+        private static Type GetBAFactoryTypeFromAssembly(string assemblyName)
+        {
+            Type baFactoryType = null;
+
+            // Load the requested assembly.
+            Assembly asm = AppDomain.CurrentDomain.Load(assemblyName);
+
+            // If an assembly was loaded and is not the current assembly, check for the required attribute.
+            // This is done to avoid using the BootstrapperApplicationFactoryAttribute which we use at build time
+            // to specify the BootstrapperApplicationFactory assembly in the manifest.
+            if (!Assembly.GetExecutingAssembly().Equals(asm))
+            {
+                // There must be one and only one BootstrapperApplicationFactoryAttribute.
+                // The attribute prevents multiple declarations already.
+                var attrs = (BootstrapperApplicationFactoryAttribute[])asm.GetCustomAttributes(typeof(BootstrapperApplicationFactoryAttribute), false);
+                if (null != attrs)
+                {
+                    baFactoryType = attrs[0].BootstrapperApplicationFactoryType;
+                }
+            }
+
+            if (null == baFactoryType)
+            {
+                throw new MissingAttributeException();
+            }
+
+            return baFactoryType;
+        }
+    }
+}
diff --git a/src/ext/Bal/WixToolset.Mba.Host/BootstrapperSectionGroup.cs b/src/ext/Bal/WixToolset.Mba.Host/BootstrapperSectionGroup.cs
new file mode 100644
index 00000000..5cf1bc9c
--- /dev/null
+++ b/src/ext/Bal/WixToolset.Mba.Host/BootstrapperSectionGroup.cs
@@ -0,0 +1,29 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixToolset.Mba.Host
+{
+    using System;
+    using System.Configuration;
+
+    /// <summary>
+    /// Handler for the wix.bootstrapper configuration section group.
+    /// </summary>
+    public class BootstrapperSectionGroup : ConfigurationSectionGroup
+    {
+        /// <summary>
+        /// Creates a new instance of the <see cref="BootstrapperSectionGroup"/> class.
+        /// </summary>
+        public BootstrapperSectionGroup()
+        {
+        }
+
+        /// <summary>
+        /// Gets the <see cref="HostSection"/> handler for the mba configuration section.
+        /// </summary>
+        [ConfigurationProperty("host")]
+        public HostSection Host
+        {
+            get { return (HostSection)base.Sections["host"]; }
+        }
+    }
+}
diff --git a/src/ext/Bal/WixToolset.Mba.Host/Exceptions.cs b/src/ext/Bal/WixToolset.Mba.Host/Exceptions.cs
new file mode 100644
index 00000000..c68951f0
--- /dev/null
+++ b/src/ext/Bal/WixToolset.Mba.Host/Exceptions.cs
@@ -0,0 +1,145 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixToolset.Mba.Host
+{
+    using System;
+    using System.Runtime.Serialization;
+
+    /// <summary>
+    /// Base class for exception returned to the bootstrapper application host.
+    /// </summary>
+    [Serializable]
+    public abstract class BootstrapperException : Exception
+    {
+        /// <summary>
+        /// Creates an instance of the <see cref="BootstrapperException"/> base class with the given HRESULT.
+        /// </summary>
+        /// <param name="hr">The HRESULT for the exception that is used by the bootstrapper application host.</param>
+        public BootstrapperException(int hr)
+        {
+            this.HResult = hr;
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="BootstrapperException"/> class.
+        /// </summary>
+        /// <param name="message">Exception message.</param>
+        public BootstrapperException(string message)
+            : base(message)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="BootstrapperException"/> class.
+        /// </summary>
+        /// <param name="message">Exception message</param>
+        /// <param name="innerException">Inner exception associated with this one</param>
+        public BootstrapperException(string message, Exception innerException)
+            : base(message, innerException)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="BootstrapperException"/> class.
+        /// </summary>
+        /// <param name="info">Serialization information for this exception</param>
+        /// <param name="context">Streaming context to serialize to</param>
+        protected BootstrapperException(SerializationInfo info, StreamingContext context)
+            : base(info, context)
+        {
+        }
+    }
+
+    /// <summary>
+    /// The bootstrapper application assembly loaded by the host does not contain exactly one instance of the
+    /// <see cref="Core.BootstrapperApplicationFactoryAttribute"/> class.
+    /// </summary>
+    /// <seealso cref="Core.BootstrapperApplicationFactoryAttribute"/>
+    [Serializable]
+    public class MissingAttributeException : BootstrapperException
+    {
+        /// <summary>
+        /// Creates a new instance of the <see cref="MissingAttributeException"/> class.
+        /// </summary>
+        public MissingAttributeException()
+            : base(NativeMethods.E_NOTFOUND)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="MissingAttributeException"/> class.
+        /// </summary>
+        /// <param name="message">Exception message.</param>
+        public MissingAttributeException(string message)
+            : base(message)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="MissingAttributeException"/> class.
+        /// </summary>
+        /// <param name="message">Exception message</param>
+        /// <param name="innerException">Inner exception associated with this one</param>
+        public MissingAttributeException(string message, Exception innerException)
+            : base(message, innerException)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="MissingAttributeException"/> class.
+        /// </summary>
+        /// <param name="info">Serialization information for this exception</param>
+        /// <param name="context">Streaming context to serialize to</param>
+        protected MissingAttributeException(SerializationInfo info, StreamingContext context)
+            : base(info, context)
+        {
+        }
+    }
+
+    /// <summary>
+    /// The bootstrapper application factory specified by the <see cref="Core.BootstrapperApplicationFactoryAttribute"/>
+    ///  does not extend the <see cref="Core.IBootstrapperApplicationFactory"/> base class.
+    /// </summary>
+    /// <seealso cref="Core.BaseBootstrapperApplicationFactory"/>
+    /// <seealso cref="Core.BootstrapperApplicationFactoryAttribute"/>
+    [Serializable]
+    public class InvalidBootstrapperApplicationFactoryException : BootstrapperException
+    {
+        /// <summary>
+        /// Creates a new instance of the <see cref="InvalidBootstrapperApplicationFactoryException"/> class.
+        /// </summary>
+        public InvalidBootstrapperApplicationFactoryException()
+            : base(NativeMethods.E_UNEXPECTED)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="InvalidBootstrapperApplicationFactoryException"/> class.
+        /// </summary>
+        /// <param name="message">Exception message.</param>
+        public InvalidBootstrapperApplicationFactoryException(string message)
+            : base(message)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="InvalidBootstrapperApplicationFactoryException"/> class.
+        /// </summary>
+        /// <param name="message">Exception message</param>
+        /// <param name="innerException">Inner exception associated with this one</param>
+        public InvalidBootstrapperApplicationFactoryException(string message, Exception innerException)
+            : base(message, innerException)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="InvalidBootstrapperApplicationFactoryException"/> class.
+        /// </summary>
+        /// <param name="info">Serialization information for this exception</param>
+        /// <param name="context">Streaming context to serialize to</param>
+        protected InvalidBootstrapperApplicationFactoryException(SerializationInfo info, StreamingContext context)
+            : base(info, context)
+        {
+        }
+    }
+}
diff --git a/src/ext/Bal/WixToolset.Mba.Host/HostSection.cs b/src/ext/Bal/WixToolset.Mba.Host/HostSection.cs
new file mode 100644
index 00000000..632025c7
--- /dev/null
+++ b/src/ext/Bal/WixToolset.Mba.Host/HostSection.cs
@@ -0,0 +1,47 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixToolset.Mba.Host
+{
+    using System;
+    using System.Configuration;
+
+    /// <summary>
+    /// Handler for the Host configuration section.
+    /// </summary>
+    public sealed class HostSection : ConfigurationSection
+    {
+        private static readonly ConfigurationProperty assemblyNameProperty = new ConfigurationProperty("assemblyName", typeof(string), null, ConfigurationPropertyOptions.IsRequired);
+        private static readonly ConfigurationProperty supportedFrameworksProperty = new ConfigurationProperty("", typeof(SupportedFrameworkElementCollection), null, ConfigurationPropertyOptions.IsDefaultCollection);
+
+        /// <summary>
+        /// Creates a new instance of the <see cref="HostSection"/> class.
+        /// </summary>
+        public HostSection()
+        {
+        }
+
+        /// <summary>
+        /// Gets the name of the assembly that contians the <see cref="Core.IBootstrapperApplicationFactory"/> child class.
+        /// </summary>
+        /// <remarks>
+        /// The assembly specified by this name must contain the <see cref="Core.BootstrapperApplicationFactoryAttribute"/> to identify
+        /// the type of the <see cref="Core.IBootstrapperApplicationFactory"/> child class.
+        /// </remarks>
+        [ConfigurationProperty("assemblyName", IsRequired = true)]
+        public string AssemblyName
+        {
+            get { return (string)base[assemblyNameProperty]; }
+            set { base[assemblyNameProperty] = value; }
+        }
+
+        /// <summary>
+        /// Gets the <see cref="SupportedFrameworkElementCollection"/> of supported frameworks for the host configuration.
+        /// </summary>
+        [ConfigurationProperty("", IsDefaultCollection = true)]
+        [ConfigurationCollection(typeof(SupportedFrameworkElement))]
+        public SupportedFrameworkElementCollection SupportedFrameworks
+        {
+            get { return (SupportedFrameworkElementCollection)base[supportedFrameworksProperty]; }
+        }
+    }
+}
diff --git a/src/ext/Bal/WixToolset.Mba.Host/NativeMethods.cs b/src/ext/Bal/WixToolset.Mba.Host/NativeMethods.cs
new file mode 100644
index 00000000..b9fc85a0
--- /dev/null
+++ b/src/ext/Bal/WixToolset.Mba.Host/NativeMethods.cs
@@ -0,0 +1,18 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixToolset.Mba.Host
+{
+    using System;
+    using System.Runtime.InteropServices;
+
+    /// <summary>
+    /// Contains native constants, functions, and structures for this assembly.
+    /// </summary>
+    internal static class NativeMethods
+    {
+        #region Error Constants
+        internal const int E_NOTFOUND = unchecked((int)0x80070490);
+        internal const int E_UNEXPECTED = unchecked((int)0x8000ffff);
+        #endregion
+    }
+}
diff --git a/src/ext/Bal/WixToolset.Mba.Host/SupportedFrameworkElement.cs b/src/ext/Bal/WixToolset.Mba.Host/SupportedFrameworkElement.cs
new file mode 100644
index 00000000..fe7fd2eb
--- /dev/null
+++ b/src/ext/Bal/WixToolset.Mba.Host/SupportedFrameworkElement.cs
@@ -0,0 +1,47 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixToolset.Mba.Host
+{
+    using System;
+    using System.Configuration;
+
+    /// <summary>
+    /// Handler for the supportedFramework configuration section.
+    /// </summary>
+    public sealed class SupportedFrameworkElement : ConfigurationElement
+    {
+        private static readonly ConfigurationProperty versionProperty = new ConfigurationProperty("version", typeof(string), null, ConfigurationPropertyOptions.IsRequired);
+        private static readonly ConfigurationProperty runtimeVersionProperty = new ConfigurationProperty("runtimeVersion", typeof(string));
+
+        /// <summary>
+        /// Creates a new instance of the <see cref="SupportedFrameworkElement"/> class.
+        /// </summary>
+        public SupportedFrameworkElement()
+        {
+        }
+
+        /// <summary>
+        /// Gets the version of the supported framework.
+        /// </summary>
+        /// <remarks>
+        /// The assembly specified by this name must contain a value matching the NETFX version registry key under
+        /// "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP".
+        /// </remarks>
+        [ConfigurationProperty("version", IsRequired = true)]
+        public string Version
+        {
+            get { return (string)base[versionProperty]; }
+            set { base[versionProperty] = value; }
+        }
+
+        /// <summary>
+        /// Gets the runtime version required by this supported framework.
+        /// </summary>
+        [ConfigurationProperty("runtimeVersion", IsRequired = false)]
+        public string RuntimeVersion
+        {
+            get { return (string)base[runtimeVersionProperty]; }
+            set { base[runtimeVersionProperty] = value; }
+        }
+    }
+}
diff --git a/src/ext/Bal/WixToolset.Mba.Host/SupportedFrameworkElementCollection.cs b/src/ext/Bal/WixToolset.Mba.Host/SupportedFrameworkElementCollection.cs
new file mode 100644
index 00000000..12c7cf3e
--- /dev/null
+++ b/src/ext/Bal/WixToolset.Mba.Host/SupportedFrameworkElementCollection.cs
@@ -0,0 +1,36 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixToolset.Mba.Host
+{
+    using System;
+    using System.Configuration;
+    using System.Diagnostics.CodeAnalysis;
+
+    /// <summary>
+    /// Handler for the supportedFramework collection.
+    /// </summary>
+    [SuppressMessage("Microsoft.Design", "CA1010:CollectionsShouldImplementGenericInterface")]
+    [ConfigurationCollection(typeof(SupportedFrameworkElement), AddItemName = "supportedFramework", CollectionType = ConfigurationElementCollectionType.BasicMap)]
+    public sealed class SupportedFrameworkElementCollection : ConfigurationElementCollection
+    {
+        public override ConfigurationElementCollectionType CollectionType
+        {
+            get { return ConfigurationElementCollectionType.BasicMap; }
+        }
+
+        protected override string ElementName
+        {
+            get { return "supportedFramework"; }
+        }
+
+        protected override ConfigurationElement CreateNewElement()
+        {
+            return new SupportedFrameworkElement();
+        }
+
+        protected override object GetElementKey(ConfigurationElement element)
+        {
+            return (element as SupportedFrameworkElement).Version;
+        }
+    }
+}
diff --git a/src/ext/Bal/WixToolset.Mba.Host/WixToolset.Mba.Host.config b/src/ext/Bal/WixToolset.Mba.Host/WixToolset.Mba.Host.config
new file mode 100644
index 00000000..a19b66f1
--- /dev/null
+++ b/src/ext/Bal/WixToolset.Mba.Host/WixToolset.Mba.Host.config
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information. -->
+
+
+<configuration>
+    <configSections>
+        <sectionGroup name="wix.bootstrapper" type="WixToolset.Mba.Host.BootstrapperSectionGroup, WixToolset.Mba.Host">
+            <section name="host" type="WixToolset.Mba.Host.HostSection, WixToolset.Mba.Host" />
+        </sectionGroup>
+    </configSections>
+    <startup useLegacyV2RuntimeActivationPolicy="true">
+        <supportedRuntime version="v4.0" />
+        <supportedRuntime version="v2.0.50727" />
+    </startup>
+    <wix.bootstrapper>
+        <!-- Example only. Use only if the startup/supportedRuntime above cannot discern supported frameworks. -->
+        <!--
+        <supportedFramework version="v4\Client" />
+        <supportedFramework version="v3.5" />
+        <supportedFramework version="v3.0" />
+        -->
+
+        <!-- Example only. Replace the host/@assemblyName attribute with assembly that implements IBootstrapperApplicationFactory. -->
+        <host assemblyName="AssemblyWithClassThatInheritsFromBootstrapperApplicationFactory" />
+    </wix.bootstrapper>
+</configuration>
diff --git a/src/ext/Bal/WixToolset.Mba.Host/WixToolset.Mba.Host.csproj b/src/ext/Bal/WixToolset.Mba.Host/WixToolset.Mba.Host.csproj
new file mode 100644
index 00000000..3ee0ad1e
--- /dev/null
+++ b/src/ext/Bal/WixToolset.Mba.Host/WixToolset.Mba.Host.csproj
@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information. -->
+
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <AssemblyName>WixToolset.Mba.Host</AssemblyName>
+    <RootNamespace>WixToolset.Mba.Host</RootNamespace>
+    <TargetFrameworks>net20</TargetFrameworks>
+    <Description>Managed Bootstrapper Application entry point</Description>
+    <DebugType>embedded</DebugType>
+    <NuspecFile>$(MSBuildThisFileName).nuspec</NuspecFile>
+    <PlatformTarget>AnyCPU</PlatformTarget>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <None Include="WixToolset.Mba.Host.config" CopyToOutputDirectory="PreserveNewest" />
+  </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All" />
+    <PackageReference Include="Nerdbank.GitVersioning" Version="3.3.37" PrivateAssets="All" />
+    <PackageReference Include="WixToolset.Mba.Core" Version="4.0.*" />
+  </ItemGroup>
+  <ItemGroup>
+    <Reference Include="System.Configuration" />
+  </ItemGroup>
+  <ItemGroup>
+    <HeaderPath Include="$(BaseOutputPath)obj\$(AssemblyName).h">
+      <Visible>False</Visible>
+    </HeaderPath>
+  </ItemGroup>
+
+  <Target Name="GenerateIdentityHeader" AfterTargets="Build" Inputs="$(TargetPath)" Outputs="@(HeaderPath)">
+    <GetAssemblyIdentity AssemblyFiles="$(TargetPath)">
+      <Output TaskParameter="Assemblies" ItemName="AssemblyIdentity" />
+    </GetAssemblyIdentity>
+    <ItemGroup>
+      <Line Include='#define MBA_ASSEMBLY_FULL_NAME L"%(AssemblyIdentity.Identity)"' />
+      <Line Include='#define MBA_CONFIG_FILE_NAME L"$(AssemblyName).config"' />
+      <Line Include='#define MBA_ENTRY_TYPE L"$(RootNamespace).BootstrapperApplicationFactory"' />
+    </ItemGroup>
+    <Message Importance="normal" Text="Generating identity definitions into @(HeaderPath->'%(FullPath)')" />
+    <WriteLinesToFile File="@(HeaderPath)" Lines="@(Line)" Overwrite="True" />
+    <ItemGroup>
+      <FileWrites Include="@(HeaderPath)" />
+    </ItemGroup>
+  </Target>
+
+  <Target Name="SetNuspecProperties" DependsOnTargets="InitializeSourceControlInformation" AfterTargets="GetBuildVersion">
+    <PropertyGroup>
+      <NuspecBasePath>$(OutputPath)</NuspecBasePath>
+      <NuspecProperties>Id=$(AssemblyName);Version=$(BuildVersionSimple);Authors=$(Authors);Copyright=$(Copyright);Description=$(Description);RepositoryCommit=$(SourceRevisionId);RepositoryType=$(RepositoryType);RepositoryUrl=$(PrivateRepositoryUrl)</NuspecProperties>
+    </PropertyGroup>
+  </Target>
+</Project>
\ No newline at end of file
diff --git a/src/ext/Bal/WixToolset.Mba.Host/WixToolset.Mba.Host.nuspec b/src/ext/Bal/WixToolset.Mba.Host/WixToolset.Mba.Host.nuspec
new file mode 100644
index 00000000..00fd21ac
--- /dev/null
+++ b/src/ext/Bal/WixToolset.Mba.Host/WixToolset.Mba.Host.nuspec
@@ -0,0 +1,23 @@
+<?xml version="1.0"?>
+<package >
+  <metadata>
+    <id>$id$</id>
+    <version>$version$</version>
+    <authors>WiX Toolset Team</authors>
+    <owners>WiX Toolset Team</owners>
+    <license type="expression">MS-RL</license>
+    <projectUrl>https://github.com/wixtoolset/Bal.wixext</projectUrl>
+    <requireLicenseAcceptance>false</requireLicenseAcceptance>
+    <description>$description$</description>
+    <copyright>$copyright$</copyright>
+    <repository type="$repositorytype$" url="$repositoryurl$" commit="$repositorycommit$" />
+    <dependencies>
+      <group targetFramework=".NETFramework2.0" />
+    </dependencies>
+  </metadata>
+
+  <files>
+    <file src="net20\$id$.config" target="samples" />
+    <file src="net20\$id$.dll" target="lib\net20" />
+  </files>
+</package>
-- 
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