.NET Core中JWT+Auth2.0实现SSO,附完整源码(.NET6)

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摘要

单点登录(SingleSignOn,SSO)指的是在多个应用系统中,只需登录一次,就可以访问其他相互信任的应用系统。


一、简介

单点登录(SingleSignOn,SSO)

指的是在多个应用系统中,只需登录一次,就可以访问其他相互信任的应用系统。

JWT

Json Web Token,这里不详细描述,简单说是一种认证机制。

Auth2.0

Auth2.0是一个认证流程,一共有四种方式,这里用的是最常用的授权码方式,流程为:

1、系统A向认证中心先获取一个授权码code。

2、系统A通过授权码code获取 token,refresh_token,expiry_time,scope。

token:系统A向认证方获取资源请求时带上的token。

refresh_token:token的有效期比较短,用来刷新token用。

expiry_time:token过期时间。

scope:资源域,系统A所拥有的资源权限,比喻scope:["userinfo"],系统A只拥有获取用户信息的权限。像平时网站接入微信登录也是只能授权获取微信用户基本信息。

这里的SSO都是公司自己的系统,都是获取用户信息,所以这个为空,第三方需要接入我们的登录时才需要scope来做资源权限判断。

二、实现目标

1、一处登录,全部登录

流程图为:

.NET Core中JWT+Auth2.0实现SSO,附完整源码(.NET6)

 

 

 

 

 

 1、浏览器访问A系统,发现A系统未登录,跳转到统一登录中心(SSO),带上A系统的回调地址,

地址为:https://sso.com/SSO/Login?redirectUrl=https://web1.com/Account/LoginRedirect&clientId=web1,输入用户名,密码,登录成功,生成授权码code,创建一个全局会话(cookie,redis),带着授权码跳转回A系统地址:https://web1.com/Account/LoginRedirect?AuthCode=xxxxxxxx。然后A系统的回调地址用这个AuthCode调用SSO获取token,获取到token,创建一个局部会话(cookie,redis),再跳转到https://web1.com。这样A系统就完成了登录。

2、浏览器访问B系统,发现B系统没登录,跳转到统一登录中心(SSO),带上B系统的回调地址,

地址为:https://sso.com/SSO/Login?redirectUrl=https://web2.com/Account/LoginRedirect&clientId=web2,SSO有全局会话证明已经登录过,直接用全局会话code获取B系统的授权码code,

带着授权码跳转回B系统https://web2.com/Account/LoginRedirect?AuthCode=xxxxxxxx,然后B系统的回调地址用这个AuthCode调用SSO获取token,获取到token创建一个局部会话(cookie,redis),再跳转到https://web2.com。整个过程不用输入用户名密码,这些跳转基本是无感的,所以B就自动登录好了。

 

为什么要多个授权码而不直接带token跳转回A,B系统呢?因为地址上的参数是很容易被拦截到的,可能token会被截取到,非常不安全

还有为了安全,授权码只能用一次便销毁,A系统的token和B系统的token是独立的,不能相互访问。

2、一处退出,全部退出

流程图为:

.NET Core中JWT+Auth2.0实现SSO,附完整源码(.NET6)

 

 

 A系统退出,把自己的会话删除,然后跳转到SSO的退出登录地址:https://sso.com/SSO/Logout?redirectUrl=https://web1.com/Account/LoginRedirect&clientId=web1,SSO删除全局会话,然后调接口删除获取了token的系统,然后在跳转到登录页面,https://sso.com/SSO/Login?redirectUrl=https://web1.com/Account/LoginRedirect&clientId=web1,这样就实现了一处退出,全部退出了。

3、双token机制

也就是带刷新token,为什么要刷新token呢?因为基于token式的鉴权授权有着天生的缺陷

token设置时间长,token泄露了,重放攻击。

token设置短了,老是要登录。问题还有很多,因为token本质决定,大部分是解决不了的。

 

所以就需要用到双Token机制,SSO返回token和refreshToken,token用来鉴权使用,refreshToken刷新token使用,

比喻token有效期10分钟,refreshToken有效期2天,这样就算token泄露了,最多10分钟就会过期,影响没那么大,系统定时9分钟刷新一次token,

这样系统就能让token滑动过期了,避免了频繁重新登录。

 三、功能实现和核心代码

1、一处登录,全部登录实现

建三个项目,SSO的项目,web1的项目,web2项目。

这里的流程就是web1跳转SSO输用户名登录成功获取code,把会话写到SSO的cookie,然后跳转回来根据code跟SSO获取token登录成功;

然后访问web2跳转到SSO,SSO已经登录,自动获取code跳回web2根据code获取token。

能实现一处登录处处登录的关键是SSO的cookie。

然后这里有一个核心的问题,如果我们生成的token有效期都是24小时,那么web1登录成功,获取的token有效期是24小时,

等到过了12个小时,我访问web2,web2也得到一个24小时的token,这样再过12小时,web1的登录过期了,web2还没过期,

这样就是web2是登录状态,然而web1却不是登录状态需要重新登录,这样就违背了一处登录处处登录的理念。

所以后面获取的token,只能跟第一次登录的token的过期时间是一样的。怎么做呢,就是SSO第一次登录时过期时间缓存下来,后面根据SSO会话获取的code,

换到的token的过期时间都和第一次一样。

SSO项目

SSO项目配置文件appsettings.json中加入web1,web2的信息,用来验证来源和生成对应项目的jwt token,实际项目应该存到数据库。

{   "Logging": {     "LogLevel": {       "Default": "Information",       "Microsoft.AspNetCore": "Warning"     }   },   "AllowedHosts": "*",   "AppSetting": {     "appHSSettings": [       {         "domain": "https://localhost:7001",         "clientId": "web1",         "clientSecret": "Nu4Ohg8mfpPnNxnXu53W4g0yWLqF0mX2"       },       {         "domain": "https://localhost:7002",         "clientId": "web2",         "clientSecret": "pQeP5X9wejpFfQGgSjyWB8iFdLDGHEV8"       }      ]   }   }

domain:接入系统的域名,可以用来校验请求来源是否合法。

clientId:接入系统标识,请求token时传进来识别是哪个系统。

clientSecret:接入系统密钥,用来生成对称加密的JWT。

建一个IJWTService定义JWT生成需要的方法

 /// <summary>     /// JWT服务接口     /// </summary>     public interface IJWTService     {         /// <summary>         /// 获取授权码         /// </summary>         /// <param name="userName"></param>         /// <param name="password"></param>         /// <returns></returns>         /// <exception cref="NotImplementedException"></exception>          ResponseModel<string> GetCode(string clientId, string userName, string password);         /// <summary>         /// 根据会话Code获取授权码         /// </summary>         /// <param name="clientId"></param>         /// <param name="sessionCode"></param>         /// <returns></returns>         ResponseModel<string> GetCodeBySessionCode(string clientId, string sessionCode);          /// <summary>         /// 根据授权码获取Token+RefreshToken         /// </summary>         /// <param name="authCode"></param>         /// <returns>Token+RefreshToken</returns>         ResponseModel<GetTokenDTO> GetTokenWithRefresh(string authCode);          /// <summary>         /// 根据RefreshToken刷新Token         /// </summary>         /// <param name="refreshToken"></param>         /// <param name="clientId"></param>         /// <returns></returns>         string GetTokenByRefresh(string refreshToken, string clientId);     }

建一个抽象类JWTBaseService加模板方法实现详细的逻辑

 /// <summary>     /// jwt服务     /// </summary>     public abstract class JWTBaseService : IJWTService     {         protected readonly IOptions<AppSettingOptions> _appSettingOptions;         protected readonly Cachelper _cachelper;         public JWTBaseService(IOptions<AppSettingOptions> appSettingOptions, Cachelper cachelper)         {             _appSettingOptions = appSettingOptions;             _cachelper = cachelper;         }          /// <summary>         /// 获取授权码         /// </summary>         /// <param name="userName"></param>         /// <param name="password"></param>         /// <returns></returns>         /// <exception cref="NotImplementedException"></exception>         public ResponseModel<string> GetCode(string clientId, string userName, string password)         {             ResponseModel<string> result = new ResponseModel<string>();              string code = string.Empty;             AppHSSetting appHSSetting = _appSettingOptions.Value.appHSSettings.Where(s => s.clientId == clientId).FirstOrDefault();             if (appHSSetting == null)             {                 result.SetFail("应用不存在");                 return result;             }             //真正项目这里查询数据库比较             if (!(userName == "admin" && password == "123456"))             {                 result.SetFail("用户名或密码不正确");                 return result;             }              //用户信息             CurrentUserModel currentUserModel = new CurrentUserModel             {                 id = 101,                 account = "admin",                 name = "张三",                 mobile = "13800138000",                 role = "SuperAdmin"             };              //生成授权码             code = Guid.NewGuid().ToString().Replace("-", "").ToUpper();             string key = $"AuthCode:{code}";             string appCachekey = $"AuthCodeClientId:{code}";             //缓存授权码             _cachelper.StringSet<CurrentUserModel>(key, currentUserModel, TimeSpan.FromMinutes(10));             //缓存授权码是哪个应用的             _cachelper.StringSet<string>(appCachekey, appHSSetting.clientId, TimeSpan.FromMinutes(10));             //创建全局会话             string sessionCode = $"SessionCode:{code}";             SessionCodeUser sessionCodeUser = new SessionCodeUser             {                 expiresTime = DateTime.Now.AddHours(1),                 currentUser = currentUserModel             };             _cachelper.StringSet<CurrentUserModel>(sessionCode, currentUserModel, TimeSpan.FromDays(1));             //全局会话过期时间             string sessionExpiryKey = $"SessionExpiryKey:{code}";             DateTime sessionExpirTime = DateTime.Now.AddDays(1);             _cachelper.StringSet<DateTime>(sessionExpiryKey, sessionExpirTime, TimeSpan.FromDays(1));             Console.WriteLine($"登录成功,全局会话code:{code}");             //缓存授权码取token时最长的有效时间             _cachelper.StringSet<DateTime>($"AuthCodeSessionTime:{code}", sessionExpirTime, TimeSpan.FromDays(1));              result.SetSuccess(code);             return result;         }         /// <summary>         /// 根据会话code获取授权码         /// </summary>         /// <param name="clientId"></param>         /// <param name="sessionCode"></param>         /// <returns></returns>         public ResponseModel<string> GetCodeBySessionCode(string clientId, string sessionCode)         {             ResponseModel<string> result = new ResponseModel<string>();             string code = string.Empty;             AppHSSetting appHSSetting = _appSettingOptions.Value.appHSSettings.Where(s => s.clientId == clientId).FirstOrDefault();             if (appHSSetting == null)             {                 result.SetFail("应用不存在");                 return result;             }             string codeKey = $"SessionCode:{sessionCode}";             CurrentUserModel currentUserModel = _cachelper.StringGet<CurrentUserModel>(codeKey);             if (currentUserModel == null)             {                 return result.SetFail("会话不存在或已过期", string.Empty);             }              //生成授权码             code = Guid.NewGuid().ToString().Replace("-", "").ToUpper();             string key = $"AuthCode:{code}";             string appCachekey = $"AuthCodeClientId:{code}";             //缓存授权码             _cachelper.StringSet<CurrentUserModel>(key, currentUserModel, TimeSpan.FromMinutes(10));             //缓存授权码是哪个应用的             _cachelper.StringSet<string>(appCachekey, appHSSetting.clientId, TimeSpan.FromMinutes(10));              //缓存授权码取token时最长的有效时间             DateTime expirTime = _cachelper.StringGet<DateTime>($"SessionExpiryKey:{sessionCode}");             _cachelper.StringSet<DateTime>($"AuthCodeSessionTime:{code}", expirTime, expirTime - DateTime.Now);              result.SetSuccess(code);             return result;          }          /// <summary>         /// 根据刷新Token获取Token         /// </summary>         /// <param name="refreshToken"></param>         /// <param name="clientId"></param>         /// <returns></returns>         public string GetTokenByRefresh(string refreshToken, string clientId)         {             //刷新Token是否在缓存             CurrentUserModel currentUserModel = _cachelper.StringGet<CurrentUserModel>($"RefreshToken:{refreshToken}");             if(currentUserModel==null)             {                 return String.Empty;             }             //刷新token过期时间             DateTime refreshTokenExpiry = _cachelper.StringGet<DateTime>($"RefreshTokenExpiry:{refreshToken}");             //token默认时间为600s             double tokenExpiry = 600;             //如果刷新token的过期时间不到600s了,token过期时间为刷新token的过期时间             if(refreshTokenExpiry>DateTime.Now&&refreshTokenExpiry<DateTime.Now.AddSeconds(600))             {                 tokenExpiry = (refreshTokenExpiry - DateTime.Now).TotalSeconds;             }                  //从新生成Token                 string token = IssueToken(currentUserModel, clientId, tokenExpiry);                 return token;          }          /// <summary>         /// 根据授权码,获取Token         /// </summary>         /// <param name="userInfo"></param>         /// <param name="appHSSetting"></param>         /// <returns></returns>         public ResponseModel<GetTokenDTO> GetTokenWithRefresh(string authCode)         {             ResponseModel<GetTokenDTO> result = new ResponseModel<GetTokenDTO>();              string key = $"AuthCode:{authCode}";             string clientIdCachekey = $"AuthCodeClientId:{authCode}";             string AuthCodeSessionTimeKey = $"AuthCodeSessionTime:{authCode}";              //根据授权码获取用户信息             CurrentUserModel currentUserModel = _cachelper.StringGet<CurrentUserModel>(key);             if (currentUserModel == null)             {                 throw new Exception("code无效");             }             //清除authCode,只能用一次             _cachelper.DeleteKey(key);              //获取应用配置             string clientId = _cachelper.StringGet<string>(clientIdCachekey);             //刷新token过期时间             DateTime sessionExpiryTime = _cachelper.StringGet<DateTime>(AuthCodeSessionTimeKey);             DateTime tokenExpiryTime = DateTime.Now.AddMinutes(10);//token过期时间10分钟              //如果刷新token有过期期比token默认时间短,把token过期时间设成和刷新token一样             if (sessionExpiryTime > DateTime.Now && sessionExpiryTime < tokenExpiryTime)             {                 tokenExpiryTime = sessionExpiryTime;             }             //获取访问token             string token = this.IssueToken(currentUserModel, clientId, (sessionExpiryTime - DateTime.Now).TotalSeconds);               TimeSpan refreshTokenExpiry;             if (sessionExpiryTime != default(DateTime))             {                 refreshTokenExpiry = sessionExpiryTime - DateTime.Now;             }             else             {                 refreshTokenExpiry = TimeSpan.FromSeconds(60 * 60 * 24);//默认24小时             }             //获取刷新token             string refreshToken = this.IssueToken(currentUserModel, clientId, refreshTokenExpiry.TotalSeconds);             //缓存刷新token             _cachelper.StringSet($"RefreshToken:{refreshToken}", currentUserModel, refreshTokenExpiry);             //缓存刷新token过期时间             _cachelper.StringSet($"RefreshTokenExpiry:{refreshToken}",DateTime.Now.AddSeconds(refreshTokenExpiry.TotalSeconds), refreshTokenExpiry);             result.SetSuccess(new GetTokenDTO() { token = token, refreshToken = refreshToken, expires = 60 * 10 });             Console.WriteLine($"client_id:{clientId}获取token,有效期:{sessionExpiryTime.ToString("yyyy-MM-dd HH:mm:ss")},token:{token}");             return result;         }          #region private         /// <summary>         /// 签发token         /// </summary>         /// <param name="userModel"></param>         /// <param name="clientId"></param>         /// <param name="second"></param>         /// <returns></returns>         private string IssueToken(CurrentUserModel userModel, string clientId, double second = 600)         {             var claims = new[]             {                    new Claim(ClaimTypes.Name, userModel.name),                    new Claim("Account", userModel.account),                    new Claim("Id", userModel.id.ToString()),                    new Claim("Mobile", userModel.mobile),                    new Claim(ClaimTypes.Role,userModel.role),             };             //var appHSSetting = getAppInfoByAppKey(clientId);             //var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(appHSSetting.clientSecret));             //var creds = new SigningCredentials(key, SecurityAlgorithms.HmacSha256);             var creds = GetCreds(clientId);             /**              * Claims (Payload)                 Claims 部分包含了一些跟这个 token 有关的重要信息。 JWT 标准规定了一些字段,下面节选一些字段:                 iss: The issuer of the token,签发主体,谁给的                 sub: The subject of the token,token 主题                 aud: 接收对象,给谁的                 exp: Expiration Time。 token 过期时间,Unix 时间戳格式                 iat: Issued At。 token 创建时间, Unix 时间戳格式                 jti: JWT ID。针对当前 token 的唯一标识                 除了规定的字段外,可以包含其他任何 JSON 兼容的字段。              * */             var token = new JwtSecurityToken(                 issuer: "SSOCenter", //谁给的                 audience: clientId, //给谁的                 claims: claims,                 expires: DateTime.Now.AddSeconds(second),//token有效期                 notBefore: null,//立即生效  DateTime.Now.AddMilliseconds(30),//30s后有效                 signingCredentials: creds);             string returnToken = new JwtSecurityTokenHandler().WriteToken(token);             return returnToken;         }          /// <summary>         /// 根据appKey获取应用信息         /// </summary>         /// <param name="clientId"></param>         /// <returns></returns>         private AppHSSetting getAppInfoByAppKey(string clientId)         {             AppHSSetting appHSSetting = _appSettingOptions.Value.appHSSettings.Where(s => s.clientId == clientId).FirstOrDefault();             return appHSSetting;         }         /// <summary>         /// 获取加密方式         /// </summary>         /// <returns></returns>         protected abstract SigningCredentials GetCreds(string clientId);                  #endregion     }

 

新建类JWTHSService实现对称加密

 /// <summary>     /// JWT对称可逆加密     /// </summary>     public class JWTHSService : JWTBaseService     {         public JWTHSService(IOptions<AppSettingOptions> options, Cachelper cachelper):base(options,cachelper)         {          }         /// <summary>         /// 生成对称加密签名凭证         /// </summary>         /// <param name="clientId"></param>         /// <returns></returns>         protected override SigningCredentials GetCreds(string clientId)         {            var appHSSettings=getAppInfoByAppKey(clientId);             var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(appHSSettings.clientSecret));             var creds = new SigningCredentials(key, SecurityAlgorithms.HmacSha256);             return creds;         }         /// <summary>         /// 根据appKey获取应用信息         /// </summary>         /// <param name="clientId"></param>         /// <returns></returns>         private AppHSSetting getAppInfoByAppKey(string clientId)         {             AppHSSetting appHSSetting = _appSettingOptions.Value.appHSSettings.Where(s => s.clientId == clientId).FirstOrDefault();             return appHSSetting;         }             }

新建JWTRSService类实现非对称加密,和上面的对称加密,只需要一个就可以里,这里把两种都写出来了

 

/// <summary>     /// JWT非对称加密     /// </summary>     public class JWTRSService : JWTBaseService     {            public JWTRSService(IOptions<AppSettingOptions> options, Cachelper cachelper):base(options, cachelper)         {           }         /// <summary>         /// 生成非对称加密签名凭证         /// </summary>         /// <param name="clientId"></param>         /// <returns></returns>         protected override SigningCredentials GetCreds(string clientId)         {             var appRSSetting = getAppInfoByAppKey(clientId);             var rsa = RSA.Create();             byte[] privateKey = Convert.FromBase64String(appRSSetting.privateKey);//这里只需要私钥,不要begin,不要end             rsa.ImportPkcs8PrivateKey(privateKey, out _);             var key = new RsaSecurityKey(rsa);             var creds = new SigningCredentials(key, SecurityAlgorithms.RsaSha256);             return creds;         }         /// <summary>         /// 根据appKey获取应用信息         /// </summary>         /// <param name="clientId"></param>         /// <returns></returns>         private AppRSSetting getAppInfoByAppKey(string clientId)         {             AppRSSetting appRSSetting = _appSettingOptions.Value.appRSSettings.Where(s => s.clientId == clientId).FirstOrDefault();             return appRSSetting;         }      }

什么时候用JWT的对称加密,什么时候用JWT的非对称加密呢?

对称加密:双方保存同一个密钥,签名速度快,但因为双方密钥一样,所以安全性比非对称加密低一些。

非对称加密:认证方保存私钥,系统方保存公钥,签名速度比对称加密慢,但公钥私钥互相不能推导,所以安全性高。

所以注重性能的用对称加密,注重安全的用非对称加密,一般是公司的系统用对称加密,第三方接入的话用非对称加密。

web1项目:

appsettings.json存着web1的信息

{   "Logging": {     "LogLevel": {       "Default": "Information",       "Microsoft.AspNetCore": "Warning"     }   },   "AllowedHosts": "*",   "SSOSetting": {     "issuer": "SSOCenter",     "audience": "web1",     "clientId": "web1",     "clientSecret": "Nu4Ohg8mfpPnNxnXu53W4g0yWLqF0mX2"   } }

 Program.cs文件加入认证代码,加入builder.Services.AddAuthentication(。。。和加入app.UseAuthentication(),完整代码如下:

using Microsoft.AspNetCore.Authentication.JwtBearer; using Microsoft.IdentityModel.Tokens; using RSAExtensions; using SSO.Demo.Web1.Models; using SSO.Demo.Web1.Utils; using System.Security.Cryptography; using System.Text;  var builder = WebApplication.CreateBuilder(args);  // Add services to the container. builder.Services.AddControllersWithViews(); builder.Services.AddHttpClient(); builder.Services.AddSingleton<Cachelper>(); builder.Services.Configure<AppOptions>(builder.Configuration.GetSection("AppOptions")); builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)     .AddJwtBearer(options =>     {         options.TokenValidationParameters = new TokenValidationParameters         {             //Audience,Issuer,clientSecret的值要和sso的一致              //JWT有一些默认的属性,就是给鉴权时就可以筛选了             ValidateIssuer = true,//是否验证Issuer             ValidateAudience = true,//是否验证Audience             ValidateLifetime = true,//是否验证失效时间             ValidateIssuerSigningKey = true,//是否验证client secret             ValidIssuer = builder.Configuration["SSOSetting:issuer"],//             ValidAudience = builder.Configuration["SSOSetting:audience"],//Issuer,这两项和前面签发jwt的设置一致             IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(builder.Configuration["SSOSetting:clientSecret"]))//client secret         };     });  #region 非对称加密-鉴权 //var rsa = RSA.Create(); //byte[] publickey = Convert.FromBase64String(AppSetting.PublicKey); //公钥,去掉begin...  end ... ////rsa.ImportPkcs8PublicKey 是一个扩展方法,来源于RSAExtensions包 //rsa.ImportPkcs8PublicKey(publickey); //var key = new RsaSecurityKey(rsa); //var signingCredentials = new SigningCredentials(key, SecurityAlgorithms.RsaPKCS1);  //builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme) //    .AddJwtBearer(options => //    { //        options.TokenValidationParameters = new TokenValidationParameters //        { //            //Audience,Issuer,clientSecret的值要和sso的一致  //            //JWT有一些默认的属性,就是给鉴权时就可以筛选了 //            ValidateIssuer = true,//是否验证Issuer //            ValidateAudience = true,//是否验证Audience //            ValidateLifetime = true,//是否验证失效时间 //            ValidateIssuerSigningKey = true,//是否验证client secret //            ValidIssuer = builder.Configuration["SSOSetting:issuer"],// //            ValidAudience = builder.Configuration["SSOSetting:audience"],//Issuer,这两项和前面签发jwt的设置一致 //            IssuerSigningKey = signingCredentials.Key //        }; //    });  #endregion    var app = builder.Build(); ServiceLocator.Instance = app.Services; //用于手动获取DI对象 // Configure the HTTP request pipeline. if (!app.Environment.IsDevelopment()) {     app.UseExceptionHandler("/Home/Error");     // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.     app.UseHsts(); }  app.UseHttpsRedirection(); app.UseStaticFiles();  app.UseRouting(); app.UseAuthentication();//这个加在UseAuthorization 前 app.UseAuthorization();   app.MapControllerRoute(     name: "default",     pattern: "{controller=Home}/{action=Index}/{id?}");  app.Run();

然后加接口根据授权code获取token,增加AccountController

 /// <summary>     /// 用户信息     /// </summary>      public class AccountController : Controller     {         private IHttpClientFactory _httpClientFactory;         private readonly Cachelper _cachelper;         public AccountController(IHttpClientFactory httpClientFactory, Cachelper cachelper)         {             _httpClientFactory = httpClientFactory;             _cachelper = cachelper;         }          /// <summary>         /// 获取用户信息,接口需要进行权限校验         /// </summary>         /// <returns></returns>         [MyAuthorize]         [HttpPost]         public ResponseModel<UserDTO> GetUserInfo()         {             ResponseModel<UserDTO> user = new ResponseModel<UserDTO>();             return user;         }         /// <summary>         /// 登录成功回调         /// </summary>         /// <returns></returns>         public ActionResult LoginRedirect()         {             return View();         }         //根据authCode获取token         [HttpPost]         public async Task<ResponseModel<GetTokenDTO>> GetAccessCode([FromBody] GetAccessCodeRequest request)         {             ResponseModel<GetTokenDTO> result = new ResponseModel<GetTokenDTO>();             //请求SSO获取 token             var client = _httpClientFactory.CreateClient();             var param = new { authCode = request.authCode };             string jsonData = System.Text.Json.JsonSerializer.Serialize(param);             StringContent paramContent = new StringContent(jsonData);              //请求sso获取token             var response = await client.PostAsync("https://localhost:7000/SSO/GetToken", new StringContent(jsonData, Encoding.UTF8, "application/json"));             string resultStr = await response.Content.ReadAsStringAsync();             result = System.Text.Json.JsonSerializer.Deserialize<ResponseModel<GetTokenDTO>>(resultStr);             if (result.code == 0) //成功             {                 //成功,缓存token到局部会话                 string token = result.data.token;                 string key = $"SessionCode:{request.sessionCode}";                 string tokenKey = $"token:{token}";                 _cachelper.StringSet<string>(key, token, TimeSpan.FromSeconds(result.data.expires));                 _cachelper.StringSet<bool>(tokenKey, true, TimeSpan.FromSeconds(result.data.expires));                 Console.WriteLine($"获取token成功,局部会话code:{request.sessionCode},{Environment.NewLine}token:{token}");             }              return result;         }         /// <summary>         /// 退出登录         /// </summary>         /// <param name="request"></param>         /// <returns></returns>         [HttpPost]         public  ResponseModel LogOut([FromBody] LogOutRequest request)         {             string key = $"SessionCode:{request.SessionCode}";             //根据会话取出token             string token = _cachelper.StringGet<string>(key);             if (!string.IsNullOrEmpty(token))             {                 //清除token                 string tokenKey = $"token:{token}";                 _cachelper.DeleteKey(tokenKey);             }             Console.WriteLine($"会话Code:{request.SessionCode}退出登录");             return new ResponseModel().SetSuccess();         }     }

 

还有得到的token还没过期,如果我退出登录了,怎么判断这个会话token失效了呢?

这里需要拦截认证过滤器,判断token在缓存中被删除,则认证不通过,增加文件MyAuthorize

  /// <summary>     /// 拦截认证过滤器     /// </summary>     public class MyAuthorize : Attribute, IAuthorizationFilter     {         private static Cachelper _cachelper = ServiceLocator.Instance.GetService<Cachelper>();          public void OnAuthorization(AuthorizationFilterContext context)         {             string id = context.HttpContext.User.FindFirst("id")?.Value;             if(string.IsNullOrEmpty(id))             {                 //token检验失败                 context.Result = new StatusCodeResult(401); //返回鉴权失败                 return;             }              Console.WriteLine("我是Authorization过滤器");             //请求的地址             var url = context.HttpContext.Request.Path.Value;             //获取打印头部信息             var heads = context.HttpContext.Request.Headers;              //取到token "Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJodHRwOi8vc2NoZW1hcy54bWxzb2FwLm9yZy93cy8yMDA1LzA1L2lkZW50aXR5L2NsYWltcy9uYW1lIjoi5byg5LiJIiwiQWNjb3VudCI6ImFkbWluIiwiSWQiOiIxMDEiLCJNb2JpbGUiOiIxMzgwMDEzODAwMCIsImh0dHA6Ly9zY2hlbWFzLm1pY3Jvc29mdC5jb20vd3MvMjAwOC8wNi9pZGVudGl0eS9jbGFpbXMvcm9sZSI6IlN1cGVyQWRtaW4iLCJleHAiOjE2NTMwNjA0MDIsImlzcyI6IlNTT0NlbnRlciIsImF1ZCI6IndlYjIifQ.aAi5a0zr_nLQQaSxSBqEhHZQ6ALFD_rWn2tnLt38DeA"             string token = heads["Authorization"];             token = token.Replace("Bearer", "").TrimStart();//去掉 "Bearer "才是真正的token             if (string.IsNullOrEmpty(token))             {                 Console.WriteLine("校验不通过");                 return;             }             //redis校验这个token的有效性,确定来源是sso和确定会话没过期             string tokenKey = $"token:{token}";             bool isVaid = _cachelper.StringGet<bool>(tokenKey);             //token无效             if (isVaid == false)             {                 Console.WriteLine($"token无效,token:{token}");                 context.Result = new StatusCodeResult(401); //返回鉴权失败             }         }     }

然后需要认证的控制器或方法头部加上[MyAuthorize]即能自动认证。

web1需要登录的页面

@{     ViewData["Title"] = "Home Page"; }  <div class="text-center">        <h1 class="display-4">欢迎来到Web1</h1>     <p>Learn about <a href="https://web2.com:7002">跳转到Web2</a>.</p>         <p>Learn about <a onclick="logOut()" href="javascript:void(0);">退出登录</a>.</p> </div> @section Scripts{     <script src="~/js/Common.js"></script> <script>                     getUserInfo()             //获取用户信息             function getUserInfo(){                 //1.cookie是否有 token                 const token=getCookie('token')                 console.log('gettoken',token)                 if(!token)                 {                     redirectLogin()                 }                 $.ajax({           type: 'POST',           url: '/Account/GetUserInfo',           headers:{"Authorization":'Bearer ' + token},           success: success,           error:error         });             }             function success(){                 console.log('成功')             }             function error(xhr, exception){                 if(xhr.status===401) //鉴权失败                 {                     console.log('未鉴权')                     redirectLogin()                 }             }                       //重定向到登录             function redirectLogin(){                      window.location.href="https://sso.com:7000/SSO/Login?clientId=web1&redirectUrl=https://web1.com:7001/Account/LoginRedirect"             }             //退出登录             function logOut(){                 clearCookie("token") //清除cookie token                  clearCookie("refreshToken") //清除cookie refreshToken                   clearCookie("sessionCode")  //清除cookie 会话                    //跳转到SSO退出登录                     window.location.href="https://sso.com:7000/SSO/LogOut?clientId=web1&redirectUrl=https://web1.com:7001/Account/LoginRedirect"                             }  </script> }

sso登录完要跳转回web1的页面

@*     For more information on enabling MVC for empty projects, visit https://go.microsoft.com/fwlink/?LinkID=397860 *@ @{     Layout = null; }    <script src="~/lib/jquery/dist/jquery.min.js"></script>       <script src="~/js/Common.js"></script>    <script>        GetAccessToken();        //根据code获取token        function GetAccessToken(){               var params=GetParam()                   //code           var authCode=params["authCode"]           var sessionCode=params["sessionCode"]           console.log('authcode',authCode)           var params={authCode,sessionCode}      $.ajax({   url:'/Account/GetAccessCode',   type:"POST",   data:JSON.stringify(params),   contentType:"application/json; charset=utf-8",   dataType:"json",   success: function(data){      console.log('token',data)      if(data.code===0) //成功      {           console.log('设置cookie')          //把token存到 cookie,过期时间为token有效时间少一分钟          setCookie("token",data.data.token,data.data.expires-60,"/")          //刷新token,有效期1天          setCookie("refreshToken",data.data.refreshToken,24*60*60,"/")          setCookie("SessionCode",sessionCode,24*60*60,"/")          //跳转到主页           window.location.href="/Home/Index"      }   }})         }                </script>

到这里web1的核心代码就完成了,web2的代码跟web1除了配置里面的加密key,其他全部一样,就不再贴出代码了,后面源码有。

到这里,就实现了一处登录,全部登录了。

2、一处退出,全部退出实现

一处退出,处处退出的流程像实现目标中的流程图,web1系统退出,跳转到SSO,让SSO发http请求退出其他的系统,跳转回登录页。

退出有个核心的问题就是,SSO只能让全部系统在当前浏览器上退出,比喻用户A在电脑1的浏览器登录了,在电脑2的浏览器也登录了,在电脑1上退出只能退出电脑1浏览器的登录,

电脑2的登录不受影响,web1退出了,SSO中的http请求退出web2的时候是不经过浏览器请求的,web2怎么知道清除那个token呢?

这里需要在SSO登录的时候生成了一个全局会话,SSO的cookie这时可以生成一个全局code,每个系统登录的时候带过去作为token的缓存key,这样就能保证全部系统的局部会话缓存key是同一个了,

退出登录的时候只需要删除这个缓存key的token即可。

 SSO的登录页面Login.cshtml

@*     For more information on enabling MVC for empty projects, visit https://go.microsoft.com/fwlink/?LinkID=397860 *@ @{ } <form id="form">     <div>用户名:<input type="text" id=userName name="userName" /></div>     <div>密码:<input type="password" id="password" name="password" /></div>     <div><input type="button" value="提交" onclick="login()" /></div> </form>  <script src="~/lib/jquery/dist/jquery.min.js"></script> <script src="~/js/Common.js"></script> <script>     sessionCheck();     //会话检查     function sessionCheck(){           //获取参数集合             const urlParams=GetParam();             const clientId=urlParams['clientId'];             const redirectUrl=urlParams['redirectUrl']             const sessionCode=getCookie("SessionCode")             if(!sessionCode)             {                 return;             }             //根据授权码获取code             var params={clientId,sessionCode}             $.ajax({             url:'/SSO/GetCodeBySessionCode',             data:JSON.stringify(params),             method:'post',             dataType:'json',             contentType:'application/json',             success:function(data){                 if(data.code===0)                 {                      const code=data.data                       window.location.href=redirectUrl+'?authCode='+code+"&sessionCode="+sessionCode                 }             }             })     }          function login(){             //获取参数集合             const urlParams=GetParam();              const clientId=urlParams['clientId'];             const redirectUrl=urlParams['redirectUrl']                 const userName=$("#userName").val()                 const password=$("#password").val()                 const params={clientId,userName,password}             $.ajax({                     url:'/SSO/GetCode',                     data:JSON.stringify(params),                     method:'post',                     dataType:'json',                     contentType:"application/json",                     success:function(data){                         //获得code,跳转回客户页面                         if(data.code===0)                         {                             const code=data.data                         //存储会话,这里的时间最好减去几分钟,不然那边的token过期,这里刚好多了几秒没过期又重新登录了                         setCookie("SessionCode",code,24*60*60,"/")                       window.location.href=redirectUrl+'?authCode='+code+'&sessionCode='+code                         }                                      }                 })             }                      </script>

这里的SessionCode是关键,作为一个全局code,系统登录会同步到个系统,用于统一退出登录时用

SSO的退出登录页面LogOut.cshtml

@*     For more information on enabling MVC for empty projects, visit https://go.microsoft.com/fwlink/?LinkID=397860 *@ @{ } <p>退出登录中...</p> <script src="~/lib/jquery/dist/jquery.min.js"></script> <script src="~/js/Common.js?v=1"></script> <script>       logOut()       function logOut()       {           var sessionCode=getCookie("SessionCode")       //清除会话         clearCookie("SessionCode")         //获取参数集合               const urlParams=GetParam();         //跳转到登录           const clientId=urlParams['clientId'];               const redirectUrl=urlParams['redirectUrl']                var params={sessionCode}               //退出登录               $.ajax({     url:'/SSO/LogOutApp',     type:"POST",     data:JSON.stringify(params),     contentType:"application/json; charset=utf-8",     dataType:"json",     success: function(data){        console.log('token',data)        if(data.code===0) //成功        {            //跳转到登录页面             window.location.href='/SSO/Login'+'?clientId='+clientId+'&redirectUrl='+redirectUrl        }     }})         }  </script>

退出登录接口:

     /// <summary>         /// 退出登录         /// </summary>         /// <param name="request"></param>         /// <returns></returns>         [HttpPost]         public async Task<ResponseModel> LogOutApp([FromBody] LogOutRequest request)         {             //删除全局会话             string sessionKey = $"SessionCode:{request.sessionCode}";             _cachelper.DeleteKey(sessionKey);             var client = _httpClientFactory.CreateClient();             var param = new { sessionCode = request.sessionCode };             string jsonData = System.Text.Json.JsonSerializer.Serialize(param);             StringContent paramContent = new StringContent(jsonData);              //这里实战中是用数据库或缓存取             List<string> urls = new List<string>()             {                 "https://localhost:7001/Account/LogOut",                 "https://localhost:7002/Account/LogOut"             };             //这里可以异步mq处理,不阻塞返回             foreach (var url in urls)             {                 //web1退出登录                 var logOutResponse = await client.PostAsync(url, new StringContent(jsonData, Encoding.UTF8, "application/json"));                 string resultStr = await logOutResponse.Content.ReadAsStringAsync();                 ResponseModel response = System.Text.Json.JsonSerializer.Deserialize<ResponseModel>(resultStr);                 if (response.code == 0) //成功                 {                     Console.WriteLine($"url:{url},会话Id:{request.sessionCode},退出登录成功");                 }                 else                 {                     Console.WriteLine($"url:{url},会话Id:{request.sessionCode},退出登录失败");                 }             };             return new ResponseModel().SetSuccess();          }

web1,web2的退出登录接口

     /// <summary>         /// 退出登录         /// </summary>         /// <param name="request"></param>         /// <returns></returns>         [HttpPost]         public  ResponseModel LogOut([FromBody] LogOutRequest request)         {             string key = $"SessionCode:{request.SessionCode}";             //根据会话取出token             string token = _cachelper.StringGet<string>(key);             if (!string.IsNullOrEmpty(token))             {                 //清除token                 string tokenKey = $"token:{token}";                 _cachelper.DeleteKey(tokenKey);             }             Console.WriteLine($"会话Code:{request.SessionCode}退出登录");             return new ResponseModel().SetSuccess();         }

到这里,一处退出,全部退出也完成了。

3、双token机制实现

token和refresh_token生成算法一样就可以了,知识token的有效期端,refresh_token的有效期长。

那刷新token时怎么知道这个是刷新token呢,SSO生成刷新token的时候,把它保存到缓存中,刷新token的时候判断缓存中有就是刷新token。

生成双token的代码:

     /// <summary>         /// 根据授权码,获取Token         /// </summary>         /// <param name="userInfo"></param>         /// <param name="appHSSetting"></param>         /// <returns></returns>         public ResponseModel<GetTokenDTO> GetTokenWithRefresh(string authCode)         {             ResponseModel<GetTokenDTO> result = new ResponseModel<GetTokenDTO>();              string key = $"AuthCode:{authCode}";             string clientIdCachekey = $"AuthCodeClientId:{authCode}";             string AuthCodeSessionTimeKey = $"AuthCodeSessionTime:{authCode}";              //根据授权码获取用户信息             CurrentUserModel currentUserModel = _cachelper.StringGet<CurrentUserModel>(key);             if (currentUserModel == null)             {                 throw new Exception("code无效");             }             //清除authCode,只能用一次             _cachelper.DeleteKey(key);              //获取应用配置             string clientId = _cachelper.StringGet<string>(clientIdCachekey);             //刷新token过期时间             DateTime sessionExpiryTime = _cachelper.StringGet<DateTime>(AuthCodeSessionTimeKey);             DateTime tokenExpiryTime = DateTime.Now.AddMinutes(10);//token过期时间10分钟              //如果刷新token有过期期比token默认时间短,把token过期时间设成和刷新token一样             if (sessionExpiryTime > DateTime.Now && sessionExpiryTime < tokenExpiryTime)             {                 tokenExpiryTime = sessionExpiryTime;             }             //获取访问token             string token = this.IssueToken(currentUserModel, clientId, (sessionExpiryTime - DateTime.Now).TotalSeconds);               TimeSpan refreshTokenExpiry;             if (sessionExpiryTime != default(DateTime))             {                 refreshTokenExpiry = sessionExpiryTime - DateTime.Now;             }             else             {                 refreshTokenExpiry = TimeSpan.FromSeconds(60 * 60 * 24);//默认24小时             }             //获取刷新token             string refreshToken = this.IssueToken(currentUserModel, clientId, refreshTokenExpiry.TotalSeconds);             //缓存刷新token             _cachelper.StringSet(refreshToken, currentUserModel, refreshTokenExpiry);             result.SetSuccess(new GetTokenDTO() { token = token, refreshToken = refreshToken, expires = 60 * 10 });             Console.WriteLine($"client_id:{clientId}获取token,有效期:{sessionExpiryTime.ToString("yyyy-MM-dd HH:mm:ss")},token:{token}");             return result;         }

根据刷新token获取token代码:

     /// <summary>         /// 根据刷新Token获取Token         /// </summary>         /// <param name="refreshToken"></param>         /// <param name="clientId"></param>         /// <returns></returns>         public string GetTokenByRefresh(string refreshToken, string clientId)         {             //刷新Token是否在缓存             CurrentUserModel currentUserModel = _cachelper.StringGet<CurrentUserModel>($"RefreshToken:{refreshToken}");             if(currentUserModel==null)             {                 return String.Empty;             }             //刷新token过期时间             DateTime refreshTokenExpiry = _cachelper.StringGet<DateTime>($"RefreshTokenExpiry:{refreshToken}");             //token默认时间为600s             double tokenExpiry = 600;             //如果刷新token的过期时间不到600s了,token过期时间为刷新token的过期时间             if(refreshTokenExpiry>DateTime.Now&&refreshTokenExpiry<DateTime.Now.AddSeconds(600))             {                 tokenExpiry = (refreshTokenExpiry - DateTime.Now).TotalSeconds;             }                  //从新生成Token                 string token = IssueToken(currentUserModel, clientId, tokenExpiry);                 return token;          }

 

四、效果演示

这里项目的SSO地址是:https://localhost:7000 ,web1地址是:https://localhost:7001,web2地址是:https://localhost:7002

修改hosts文件,让他们在不同域名下,cookie不能共享。

win10路径:C:WindowsSystem32driversetchosts 在最后加入

127.0.0.1 sso.com 127.0.0.1 web1.com 127.0.0.1 web2.com

这样得到新的地址,SSO地址:https://sso.com:7000 ,web1地址是:https://web1.com,web2地址是:https://web2.com

 .NET Core中JWT+Auth2.0实现SSO,附完整源码(.NET6)

 

1、 这里一开始,访问https://web2.com没登录跳转到https://sso.com。

2、然后访问https://web1.com也没登录,也跳转到了https://sso.com,证明web1,web2都没登录。

3、然后在跳转的sso登录后跳转回web1,然后点https://web2.com的连接跳转到https://web2.com,自动登录了。

4、然后在web1退出登录,web2刷新页面,也退出了登录。

再看一下这些操作下SSO日志打印的记录。

.NET Core中JWT+Auth2.0实现SSO,附完整源码(.NET6)

 到这里.NET6下基于JWT+OAuth2.0的SSO就完成了。

 

 最后附源码:https://github.com/weixiaolong325/SSO.Demo.SSO