DotNetOpenAuth实践之搭建验证服务器

系列目录：

DotNetOpenAuth实践系列（源码在这里）

DotNetOpenAuth是OAuth2的.net版本，利用DotNetOpenAuth我们可以轻松的搭建OAuth2验证服务器，不废话，下面我们来一步步搭建验证服务器

本次搭建环境：

.net4.5.1 ，DotNetOpenAuth v5.0.0-alpha3，MVC5

一、环境搭建

　　1、新建一个空的VS解决方案

　　2、添加验证服务器项目，项目选择MVC，不要自带的身份验证

　　3、使用Nuget添加DotNetOpenAuth v5.0.0-alpha3

输入DotNetOpenAuth 安装DotNetOpenAuth v5.0.0-alpha3

添加完成后

二、编写DotNetOpenAuth 验证服务器关键代码，实现功能

　　1、添加AuthorizationServerConfiguration.cs

这里的配置是为了添加方便管理，其实可以不用这个类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography.X509Certificates;
using System.Web;

namespace IdefavAuthorizationServer.Code
{
    /// <summary>
    /// 验证服务器配置
    /// </summary>
    public class AuthorizationServerConfiguration
    {
        /// <summary>
        /// 构造函数
        /// </summary>
        public AuthorizationServerConfiguration()
        {
            TokenLifetime = TimeSpan.FromMinutes(5);
        }

        /// <summary>
        /// 签名证书
        /// </summary>
        public X509Certificate2 SigningCertificate { get; set; }

        /// <summary>
        /// 加密证书
        /// </summary>
        public X509Certificate2 EncryptionCertificate { get; set; }

        /// <summary>
        /// Token有效时间
        /// </summary>
        public TimeSpan TokenLifetime { get; set; }
    }
}

2、实现IClientDescription接口

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using DotNetOpenAuth.Messaging;
using DotNetOpenAuth.OAuth2;

namespace IdefavAuthorizationServer.Code
{
    public class Client : IClientDescription
    {
        /// <summary>
        /// 客户端名称client_id
        /// </summary>
        public string Name { get; set; }

        /// <summary>
        /// 客户端类型
        /// </summary>
        public int ClientType { get; set; }

        /// <summary>
        /// 回调URL
        /// </summary>
        public string Callback { get; set; }

        public string ClientSecret { get; set; }


        Uri IClientDescription.DefaultCallback
        {
            get { return string.IsNullOrEmpty(this.Callback) ? null : new Uri(this.Callback); }
        }


        ClientType IClientDescription.ClientType
        {
            get { return (ClientType)this.ClientType; }
        }


        bool IClientDescription.HasNonEmptySecret
        {
            get { return !string.IsNullOrEmpty(this.ClientSecret); }
        }


        bool IClientDescription.IsCallbackAllowed(Uri callback)
        {
            if (string.IsNullOrEmpty(this.Callback))
            {
                // No callback rules have been set up for this client.
                return true;
            }

            // In this sample, it's enough of a callback URL match if the scheme and host match.
            // In a production app, it is advisable to require a match on the path as well.
            Uri acceptableCallbackPattern = new Uri(this.Callback);
            if (string.Equals(acceptableCallbackPattern.GetLeftPart(UriPartial.Authority), callback.GetLeftPart(UriPartial.Authority), StringComparison.Ordinal))
            {
                return true;
            }

            return false;
        }


        bool IClientDescription.IsValidClientSecret(string secret)
        {
            return MessagingUtilities.EqualsConstantTime(secret, this.ClientSecret);
        }


    }
}

3、实现IAuthorizationServerHost接口

using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Web;
using DotNetOpenAuth.Messaging.Bindings;
using DotNetOpenAuth.OAuth2;
using DotNetOpenAuth.OAuth2.ChannelElements;
using DotNetOpenAuth.OAuth2.Messages;

namespace IdefavAuthorizationServer.Code
{
    public class IdefavAuthorizationServerHost : IAuthorizationServerHost
    {
        /// <summary>
        /// 配置
        /// </summary>
        private readonly AuthorizationServerConfiguration _configuration;

        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="config"></param>
        public IdefavAuthorizationServerHost(AuthorizationServerConfiguration config)
        {
            if (config != null)
                _configuration = config;
        }

        /// <summary>
        /// Token创建
        /// </summary>
        /// <param name="accessTokenRequestMessage"></param>
        /// <returns></returns>
        public AccessTokenResult CreateAccessToken(IAccessTokenRequest accessTokenRequestMessage)
        {
            var accessToken = new AuthorizationServerAccessToken();
            accessToken.Lifetime = _configuration.TokenLifetime;//设置Token的有效时间

            // 设置加密公钥
            accessToken.ResourceServerEncryptionKey =
                (RSACryptoServiceProvider)_configuration.EncryptionCertificate.PublicKey.Key;
            // 设置签名私钥
            accessToken.AccessTokenSigningKey = (RSACryptoServiceProvider)_configuration.SigningCertificate.PrivateKey;

            var result = new AccessTokenResult(accessToken);
            return result;
        }

        public IClientDescription GetClient(string clientIdentifier)
        {
            // 这里需要去验证客户端发送过来的client_id
            if (string.Equals(clientIdentifier, "idefav", StringComparison.CurrentCulture))// 这里为了简明起见没有使用数据库
            {
                var client=new Client
                {
                    Name = "idefav",
                    ClientSecret = "1",
                    ClientType = 1
                };
                return client;
            }
            throw new ArgumentOutOfRangeException("clientIdentifier");
        }

        public bool IsAuthorizationValid(IAuthorizationDescription authorization)
        {
            return true;
        }

        public AutomatedUserAuthorizationCheckResponse CheckAuthorizeResourceOwnerCredentialGrant(string userName, string password,
            IAccessTokenRequest accessRequest)
        {
            throw new NotImplementedException();
        }

        public AutomatedAuthorizationCheckResponse CheckAuthorizeClientCredentialsGrant(IAccessTokenRequest accessRequest)
        {
            AutomatedUserAuthorizationCheckResponse response = new AutomatedUserAuthorizationCheckResponse(accessRequest, true, "test");
            return response;
        }

        public ICryptoKeyStore CryptoKeyStore { get; }
        public INonceStore NonceStore { get; }

       
    }
}

4、实现OAuthController

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Web;
using System.Web.Mvc;
using DotNetOpenAuth.Messaging;
using DotNetOpenAuth.OAuth2;
using IdefavAuthorizationServer.Code;

namespace IdefavAuthorizationServer.Controllers
{
    public class OAuthController : Controller
    {
        private readonly AuthorizationServer authorizationServer =
           new AuthorizationServer(new IdefavAuthorizationServerHost(Common.Configuration));

        public async Task<ActionResult> Token()
        {
            var response = await authorizationServer.HandleTokenRequestAsync(Request);
            return response.AsActionResult();
        }
    }
}

5、初始化AuthorizationServerConfiguration

这里采用Windows签名证书

放到项目中

制作证书事注意：要加上-a sha1  -sky exchange

到此，基本代码就写完了，现在说说要注意的地方，OAuth2默认设置的请求是要求SSL的也就是必须是https//localhost:1111/OAuth/Token，然后我们现在不需要使用SSL加密请求，更改一下WebConfig文件

在WebConfig里面设置成如图中那样，就可以不用https访问了

6、我们F5运行项目

使用Post工具发送Post请求访问 http://localhost:53022/OAuth/token 

Body参数：

client_id:idefav
client_secret:1
grant_type:client_credentials

请求结果：

这样我们就拿到了access_token，通过这个access_token我们就可以访问资源服务器了

更新：

OAuthController代码添加内容类型

using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Web;
using System.Web.Mvc;
using System.Web.Script.Services;
using DotNetOpenAuth.Messaging;
using DotNetOpenAuth.OAuth2;
using IdefavAuthorizationServer.Code;

namespace IdefavAuthorizationServer.Controllers
{
    public class OAuthController : Controller
    {
        private readonly AuthorizationServer authorizationServer =
           new AuthorizationServer(new IdefavAuthorizationServerHost(Common.Configuration));
        
        public async Task<ActionResult> Token()
        {
            var response = await authorizationServer.HandleTokenRequestAsync(Request);
            Response.ContentType = response.Content.Headers.ContentType.ToString();
            return response.AsActionResult();
        }
    }
}

鉴于有人不知道Windows签名制作，下篇我们一起来看看如何制作一个认证服务器可以使用的签名证书