发布:2022/7/13 23:12:59作者:管理员 来源:本站 浏览次数:1033
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:
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:
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
ar 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,只是token的有效期短,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;
}
这里项目的SSO地址是: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:
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:
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
ar 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,只是token的有效期短,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;
}
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:\Windows\System32\drivers\etc\hosts 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
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。
到这里.NET 6 下基于JWT+OAuth2.0的SSO就完成了。
源码Github:https://github.com/weixiaolong325/SSO.Demo.SSO
转自:包子wxl
链接:http://cnblogs.com/wei325/p/16316004.htmlhttps://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:\Windows\System32\drivers\etc\hosts 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
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。
到这里.NET 6 下基于JWT+OAuth2.0的SSO就完成了。
源码Github:https://github.com/weixiaolong325/SSO.Demo.SSO
转自:包子wxl
链接:http://cnblogs.com/wei325/p/16316004.html
© Copyright 2014 - 2024 柏港建站平台 ejk5.com. 渝ICP备16000791号-4