基于Web.Api的基本令牌认证和授权

本文关键字：令牌 认证和 授权 Web Api 基于 | 更新日期: 2023-09-27 18:05:44

所以我有一个MVC应用程序调用WebApi方法。

我对MVC App的授权是这样完成的

  public class CustomAuthorizeAttribute : AuthorizeAttribute {
        private RolesEnum _role;
        public CustomAuthorizeAttribute() {
            _role = RolesEnum.User;
        }
        public CustomAuthorizeAttribute(RolesEnum role) {
            _role = role;
        }
        protected override bool AuthorizeCore(HttpContextBase httpContext) {
            User currentUser = (User)httpContext.Session["CurrentUser"];
            if (currentUser == null) {
                return false;
            }
            if (currentUser.Role == RolesEnum.User && _role == RolesEnum.Admin) {
                return false;
            }
            return true;
        }

通过调用WebApi方法完成认证

[HttpPost]
    public ActionResult Login(string username, string password)
    {
        User acc = new User();
        acc.Username = username;
        acc.Password = password;
        acc = accBL.Login(acc);
        if (acc != null) {
            Session.Add("CurrentUser", acc);
            return  RedirectToAction("Index", "Project", null);
        } else {
            return View();
        }

    }

登录方法如下所示

  public User LogIn(User acc) {
            try {
                HttpClient client = new HttpClient();
                client.BaseAddress = new Uri(BASE_URL);
                client.DefaultRequestHeaders.Accept.Add(
                   new MediaTypeWithQualityHeaderValue("application/json"));
                HttpResponseMessage response = client.PostAsJsonAsync("api/Account/Login", acc).Result;
                if (response.IsSuccessStatusCode) {
                    return response.Content.ReadAsAsync<User>().Result;
                } else {
                    return null;
                }
            } catch {
                return null;
            }
        }

WebApi方法是这样的

 [Route("api/Account/Login")]
        [HttpPost]
        public IHttpActionResult Login(User userModel) {
            User user = db.Users.Where(p => p.Username == userModel.Username && p.Password == userModel.Password).FirstOrDefault();
            if (user != null) {
                return Ok(user);
            } else {
                throw new HttpResponseException(HttpStatusCode.Unauthorized);
            }
        }

如何在MVC应用程序和WebApi服务之间建立连接?我的授权和身份验证工作在MVC部分，但我的WebApi服务可以调用没有任何授权/身份验证。根据我的例子，我如何保护我的WebApi ?我已经用MVC和WebApi工作了大约3周，很多事情对我来说都不是很清楚。

我应该只是创建一个GUID在公共IHttpActionResult登录(用户userModel)，并检查它每次我的方法被调用?我如何将此GUID传递到MVC应用程序和从MVC到WebApi?

基于Web.Api的基本令牌认证和授权

您可以做的是创建某种令牌(例如:JWT)在WebAPI Login()方法中，并返回Ok()响应(对MVC应用程序)。调用您的API端点的用户必须将此令牌发回(例如:在自定义的"Token"头中)。您可以在API端点中使用的自定义WebAPI授权属性中验证令牌。

。

<

登录端点/strong> 

[Route("api/Account/Login")]
[HttpPost]
public object Login(User userModel) {
    User user = ...;
    string token = CreateTokenForUser(user);
    if (user != null) {
        // return user and token back 
        return new {User = user, Token = token};
    } else {
        throw new HttpResponseException(HttpStatusCode.Unauthorized);
    }
}

自定义认证过滤器

public class UserAuthAttribute : ActionFilterAttribute, IAuthenticationFilter
{
    public async Task AuthenticateAsync(HttpAuthenticationContext context, CancellationToken cancellationToken)
    {
        string token = null;
        IEnumerable<string> tokenHeader;
        if (context.Request.Headers.TryGetValues("Token", out tokenHeader))
            token = tokenHeader.FirstOrDefault();
        if (token != null && IsTokenValid(token)
        {
            // user has been authenticated i.e. send us a token we sent back earlier
        }
        else 
        {
            // set ErrorResult - this will result in sending a 401 Unauthorized
            context.ErrorResult = new AuthenticationFailureResult(Invalid token", context.Request);
        }
    }
}

其他只允许认证用户访问的端点

[Route("api/Values")]
[HttpGet]
[UserAuth]
public object GetValues() {
    // only requests with a valid token will be able to call this because of the [UserAuth] attribute
}
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