我们可以在不使用 ASP.Net Identity 的情况下使用 MVC 5 提供的 cookie 身份验证吗？

Question

我正在尝试迁移已实现自己的用户身份验证和授权逻辑的现有应用程序。我从 .NET MVC 开始，它包含用于身份验证和授权的 Asp.NET 身份框架。我知道我可以自定义 Asp.NET 标识来使用现有的表。

但是是否可以在没有 Asp.NET Identity 的情况下使用 Cookie 身份验证？我发现这可用于 Asp.NET core，代码如下：

var claims = new List<Claim>
{
    new Claim(ClaimTypes.Name, user.Email),
    new Claim("FullName", user.FullName),
    new Claim(ClaimTypes.Role, "Administrator"),
};

var claimsIdentity = new ClaimsIdentity(
    claims, CookieAuthenticationDefaults.AuthenticationScheme);

var authProperties = new AuthenticationProperties
{
    //AllowRefresh = <bool>,
    // Refreshing the authentication session should be allowed.

    //ExpiresUtc = DateTimeOffset.UtcNow.AddMinutes(10),
    // The time at which the authentication ticket expires. A 
    // value set here overrides the ExpireTimeSpan option of 
    // CookieAuthenticationOptions set with AddCookie.

    //IsPersistent = true,
    // Whether the authentication session is persisted across 
    // multiple requests. Required when setting the 
    // ExpireTimeSpan option of CookieAuthenticationOptions 
    // set with AddCookie. Also required when setting 
    // ExpiresUtc.

    //IssuedUtc = <DateTimeOffset>,
    // The time at which the authentication ticket was issued.

    //RedirectUri = <string>
    // The full path or absolute URI to be used as an http 
    // redirect response value.
};

await HttpContext.SignInAsync(
    CookieAuthenticationDefaults.AuthenticationScheme, 
    new ClaimsPrincipal(claimsIdentity), 
    authProperties);

上面的代码取自微软文档链接

但我找不到HttpContext.SignInAsyncAsp.NET MVC 5 的方法。我缺少什么吗？

Answer 1

我通过实现自己的身份来做到这一点。这样就可以轻松添加我需要的任意数量的属性。下面是带有自定义属性FriendlyName的代码示例

public class Identity : IIdentity
    {
        public Identity(int id, string name, string friendlyName, string roles)
        {
            this.ID = id;
            this.Name = name;
            this.FriendlyName = friendlyName;
            this.Roles = roles;
        }



  public Identity(string name, string data)
    {
        if (string.IsNullOrWhiteSpace(data))
            throw new ArgumentException();

        string[] values = data.Split('|');
        if (values.Length != 3)
            throw new ArgumentException();

        this.Name = name;
        this.ID = Convert.ToInt32(values[0]);
        this.FriendlyName = values[1];
        Roles = values[2];
    }

    public string AuthenticationType
    {
        get { return "Custom"; }
    }

    public bool IsAuthenticated
    {
        get { return true; }
    }

    public override string ToString()
    {
        return FriendlyName;
    }

    public string GetUserData()
    {
        return string.Format("{0}|{1}|{2}", ID, FriendlyName, Roles);
    }


    public int ID { get; private set; }
    public string Name { get; private set; }
    public string FriendlyName { get; private set; }
    public string Roles { get; private set; }
}

//in controller on login action:
        Identity id = new Identity(user.ID,  user.Username, "some friendly name", user.Roles);
        DateTime expire = DateTime.Now.AddMinutes(FormsAuthentication.Timeout.TotalMinutes);
        FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(id.ID, user.Username, DateTime.Now, expire, false, id.GetUserData());
        string hashTicket = FormsAuthentication.Encrypt(ticket);
        HttpCookie cookie = new HttpCookie(FormsAuthentication.FormsCookieName, hashTicket);
        HttpContext.Response.Cookies.Add(cookie);

在 global.asax 中你有：

public override void Init()
        {
            base.Init();
            PostAuthenticateRequest += new EventHandler(MvcApplication_PostAuthenticateRequest);
        }

    void MvcApplication_PostAuthenticateRequest(object sender, EventArgs e)
    {
        HttpCookie authCookie = Request.Cookies[FormsAuthentication.FormsCookieName];
        if (authCookie != null)
        {
            FormsAuthenticationTicket authTicket = FormsAuthentication.Decrypt(authCookie.Value);
            if (authTicket == null || authTicket.Expired)
                return;

            Identity id = new Identity(authTicket.Name, authTicket.UserData);
            Principal user = new Principal(id);
            Context.User = user;
            Thread.CurrentPrincipal = user;
        }
    }