initial commit for Typeform provider

OwinOAuthProvidersDemo/App_Start/Startup.Auth.cs

@@ -5,6 +5,7 @@
 using Owin.Security.Providers.Evernote;
 using Owin.Security.Providers.PayPal;
 using Owin.Security.Providers.ArcGISPortal;
+using Owin.Security.Providers.Typeform;
 
 namespace OwinOAuthProvidersDemo
 {
@@ -357,6 +358,14 @@ public void ConfigureAuth(IAppBuilder app)
             //      AppSecret = "",
             //      DebugUsingRequestHeadersToBuildBaseUri = true
             //});
+
+            //var typeformOptions = new Owin.Security.Providers.Typeform.TypeformAuthenticationOptions
+            //{
+            //    ClientId = "",
+            //    ClientSecret = "",
+            //};
+            //typeformOptions.Scope.Add("forms:read");
+            //app.UseTypeformAuthentication(typeformOptions);
         }
-	}
+    }
 }

OwinOAuthProvidersDemo/OwinOAuthProvidersDemo.csproj

@@ -431,6 +431,10 @@
       <Project>{c3cf8734-6aac-4f59-9a3e-1cba8582cd48}</Project>
       <Name>Owin.Security.Providers.Twitch</Name>
     </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Typeform\Owin.Security.Providers.Typeform.csproj">
+      <Project>{c8862b45-e1d1-4ab7-a83d-3a2fd2a22526}</Project>
+      <Name>Owin.Security.Providers.Typeform</Name>
+    </ProjectReference>
     <ProjectReference Include="..\src\Owin.Security.Providers.Untappd\Owin.Security.Providers.Untappd.csproj">
       <Project>{3e89eca3-f4e7-4181-b26b-8250d5151044}</Project>
       <Name>Owin.Security.Providers.Untappd</Name>

src/Owin.Security.Providers.Typeform/Constants.cs

@@ -0,0 +1,7 @@
+namespace Owin.Security.Providers.Typeform
+{
+    public static class Constants
+    {
+        public const string DefaultAuthenticationType = "Typeform";
+    }
+}

src/Owin.Security.Providers.Typeform/Owin.Security.Providers.Typeform.csproj

@@ -0,0 +1,107 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{C8862B45-E1D1-4AB7-A83D-3A2FD2A22526}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>Owin.Security.Providers.Typeform</RootNamespace>
+    <AssemblyName>Owin.Security.Providers.Typeform</AssemblyName>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <LangVersion>6</LangVersion>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <LangVersion>6</LangVersion>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="Microsoft.Owin, Version=3.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\Microsoft.Owin.3.0.1\lib\net45\Microsoft.Owin.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="Microsoft.Owin.Security, Version=3.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\Microsoft.Owin.Security.3.0.1\lib\net45\Microsoft.Owin.Security.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="Newtonsoft.Json, Version=8.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\Newtonsoft.Json.8.0.3\lib\net45\Newtonsoft.Json.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="Owin, Version=1.0.0.0, Culture=neutral, PublicKeyToken=f0ebd12fd5e55cc5, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\Owin.1.0\lib\net40\Owin.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Net.Http.WebRequest" />
+    <Reference Include="System.Web" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Net.Http" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="Constants.cs" />
+    <Compile Include="Resources.Designer.cs">
+      <DependentUpon>Resources.resx</DependentUpon>
+      <AutoGen>True</AutoGen>
+      <DesignTime>True</DesignTime>
+    </Compile>
+    <Compile Include="TypeformAuthenticationExtensions.cs" />
+    <Compile Include="TypeformAuthenticationHandler.cs" />
+    <Compile Include="TypeformAuthenticationMiddleware.cs" />
+    <Compile Include="TypeformAuthenticationOptions.cs" />
+    <Compile Include="Provider\ITypeformAuthenticationProvider.cs" />
+    <Compile Include="Provider\TypeformAuthenticatedContext.cs" />
+    <Compile Include="Provider\TypeformAuthenticationProvider.cs" />
+    <Compile Include="Provider\TypeformReturnEndpointContext.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="C:\projects\GitHub\OwinOAuthProviders\Owin.Security.Providers.Typeform\Owin.Security.Providers.Typeform.nuspec" />
+    <None Include="packages.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <EmbeddedResource Include="Resources.resx">
+      <Generator>ResXFileCodeGenerator</Generator>
+      <LastGenOutput>Resources.Designer.cs</LastGenOutput>
+    </EmbeddedResource>
+  </ItemGroup>
+  <ItemGroup />
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <Target Name="PostBuildMacros">
+    <GetAssemblyIdentity AssemblyFiles="$(TargetPath)">
+      <Output TaskParameter="Assemblies" ItemName="Targets" />
+    </GetAssemblyIdentity>
+    <ItemGroup>
+      <VersionNumber Include="@(Targets->'%(Version)')" />
+    </ItemGroup>
+  </Target>
+  <PropertyGroup>
+    <PreBuildEvent>
+    </PreBuildEvent>
+    <PostBuildEventDependsOn>
+      $(PostBuildEventDependsOn);
+      PostBuildMacros;
+    </PostBuildEventDependsOn>
+  </PropertyGroup>
+</Project>

src/Owin.Security.Providers.Typeform/Properties/AssemblyInfo.cs

@@ -0,0 +1,15 @@
+using System.Reflection;
+using System.Runtime.InteropServices;
+
+[assembly: AssemblyTitle("Owin.Security.Providers.Typeform")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("Owin.Security.Providers.Typeform")]
+[assembly: AssemblyCopyright("Copyright ©  2016")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+[assembly: ComVisible(false)]
+[assembly: Guid("b6a4a4cb-d365-41a0-b4c9-966e7ef19de0")]
+[assembly: AssemblyVersion("2.0.0.0")]
+[assembly: AssemblyFileVersion("2.0.0.0")]

src/Owin.Security.Providers.Typeform/Provider/ITypeformAuthenticationProvider.cs

@@ -0,0 +1,24 @@
+using System.Threading.Tasks;
+
+namespace Owin.Security.Providers.Typeform
+{
+    /// <summary>
+    /// Specifies callback methods which the <see cref="TypeformAuthenticationMiddleware"></see> invokes to enable developer control over the authentication process. />
+    /// </summary>
+    public interface ITypeformAuthenticationProvider
+    {
+        /// <summary>
+        /// Invoked whenever Typeform successfully authenticates a user
+        /// </summary>
+        /// <param name="context">Contains information about the login session as well as the user <see cref="System.Security.Claims.ClaimsIdentity"/>.</param>
+        /// <returns>A <see cref="Task"/> representing the completed operation.</returns>
+        Task Authenticated(TypeformAuthenticatedContext context);
+
+        /// <summary>
+        /// Invoked prior to the <see cref="System.Security.Claims.ClaimsIdentity"/> being saved in a local cookie and the browser being redirected to the originally requested URL.
+        /// </summary>
+        /// <param name="context"></param>
+        /// <returns>A <see cref="Task"/> representing the completed operation.</returns>
+        Task ReturnEndpoint(TypeformReturnEndpointContext context);
+    }
+}

src/Owin.Security.Providers.Typeform/Provider/TypeformAuthenticatedContext.cs

@@ -0,0 +1,72 @@
+// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
+
+using System;
+using System.Linq;
+using System.Security.Claims;
+using Microsoft.Owin;
+using Microsoft.Owin.Security;
+using Microsoft.Owin.Security.Provider;
+
+namespace Owin.Security.Providers.Typeform
+{
+    /// <summary>
+    /// Contains information about the login session as well as the user <see cref="System.Security.Claims.ClaimsIdentity"/>.
+    /// </summary>
+    public class TypeformAuthenticatedContext : BaseContext
+    {
+        /// <summary>
+        /// Initializes a <see cref="TypeformAuthenticatedContext"/>
+        /// </summary>
+        /// <param name="context">The OWIN environment</param>
+        /// <param name="userJson">The JSON-serialized user</param>
+        /// <param name="accessToken">Typeform Access token</param>
+        /// <param name="refreshToken">Typeform Refresh token</param>
+        /// <param name="instanceUrl">Typeform instance url</param>
+        public TypeformAuthenticatedContext(IOwinContext context, string accessToken)
+            : base(context)
+        {
+            AccessToken = accessToken;
+
+            // Typeform doesn't supply a unique identifier for the user,
+            // however according to https://developer.typeform.com/get-started/applications/
+            // the access token doesn't expire so we can use it as a proxy for UserId
+            UserId = ComputeHash(accessToken);
+        }
+
+        /// <summary>
+        /// Gets the Typeform access token
+        /// </summary>
+        public string AccessToken { get; private set; }
+
+        /// <summary>
+        /// Gets the Typeform User ID
+        /// </summary>
+        public string UserId { get; private set; }
+
+
+        /// <summary>
+        /// Gets the <see cref="ClaimsIdentity"/> representing the user
+        /// </summary>
+        public ClaimsIdentity Identity { get; set; }
+
+        /// <summary>
+        /// Gets or sets a property bag for common authentication properties
+        /// </summary>
+        public AuthenticationProperties Properties { get; set; }
+
+        /// <summary>
+        /// 
+        /// </summary>
+        private static string ComputeHash(string input) 
+        {
+            if (String.IsNullOrEmpty(input)) return null;
+
+            byte[] bytes;
+            using (var hash = System.Security.Cryptography.SHA1.Create()) {
+                bytes = hash.ComputeHash(System.Text.Encoding.UTF8.GetBytes(input));
+            }
+
+            return String.Concat(bytes.Select(x => x.ToString("x2")));
+        }
+    }
+}

src/Owin.Security.Providers.Typeform/Provider/TypeformAuthenticationProvider.cs

@@ -0,0 +1,50 @@
+using System;
+using System.Threading.Tasks;
+
+namespace Owin.Security.Providers.Typeform
+{
+    /// <summary>
+    /// Default <see cref="ITypeformAuthenticationProvider"/> implementation.
+    /// </summary>
+    public class TypeformAuthenticationProvider : ITypeformAuthenticationProvider
+    {
+        /// <summary>
+        /// Initializes a <see cref="TypeformAuthenticationProvider"/>
+        /// </summary>
+        public TypeformAuthenticationProvider()
+        {
+            OnAuthenticated = context => Task.FromResult<object>(null);
+            OnReturnEndpoint = context => Task.FromResult<object>(null);
+        }
+
+        /// <summary>
+        /// Gets or sets the function that is invoked when the Authenticated method is invoked.
+        /// </summary>
+        public Func<TypeformAuthenticatedContext, Task> OnAuthenticated { get; set; }
+
+        /// <summary>
+        /// Gets or sets the function that is invoked when the ReturnEndpoint method is invoked.
+        /// </summary>
+        public Func<TypeformReturnEndpointContext, Task> OnReturnEndpoint { get; set; }
+
+        /// <summary>
+        /// Invoked whenever Typeform successfully authenticates a user
+        /// </summary>
+        /// <param name="context">Contains information about the login session as well as the user <see cref="System.Security.Claims.ClaimsIdentity"/>.</param>
+        /// <returns>A <see cref="Task"/> representing the completed operation.</returns>
+        public virtual Task Authenticated(TypeformAuthenticatedContext context)
+        {
+            return OnAuthenticated(context);
+        }
+
+        /// <summary>
+        /// Invoked prior to the <see cref="System.Security.Claims.ClaimsIdentity"/> being saved in a local cookie and the browser being redirected to the originally requested URL.
+        /// </summary>
+        /// <param name="context"></param>
+        /// <returns>A <see cref="Task"/> representing the completed operation.</returns>
+        public virtual Task ReturnEndpoint(TypeformReturnEndpointContext context)
+        {
+            return OnReturnEndpoint(context);
+        }
+    }
+}

src/Owin.Security.Providers.Typeform/Provider/TypeformReturnEndpointContext.cs

@@ -0,0 +1,26 @@
+// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
+
+using Microsoft.Owin;
+using Microsoft.Owin.Security;
+using Microsoft.Owin.Security.Provider;
+
+namespace Owin.Security.Providers.Typeform
+{
+    /// <summary>
+    /// Provides context information to middleware providers.
+    /// </summary>
+    public class TypeformReturnEndpointContext : ReturnEndpointContext
+    {
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <param name="context">OWIN environment</param>
+        /// <param name="ticket">The authentication ticket</param>
+        public TypeformReturnEndpointContext(
+            IOwinContext context,
+            AuthenticationTicket ticket)
+            : base(context, ticket)
+        {
+        }
+    }
+}