我需要做一些相当简单的事情:在我的ASP。NET MVC应用程序，我想设置自定义IIdentity / IPrincipal。哪一个更容易/更合适。我想扩展默认值，这样我就可以调用User.Identity.Id和User.Identity.Role之类的东西。没什么特别的，只是一些额外的属性。
I've read tons of articles and questions but I feel like I'm making it harder than it actually is. I thought it would be easy. If a user logs on, I want to set a custom IIdentity. So I thought, I will implement Application_PostAuthenticateRequest in my global.asax. However, that is called on every request, and I don't want to do a call to the database on every request which would request all the data from the database and put in a custom IPrincipal object. That also seems very unnecessary, slow, and in the wrong place (doing database calls there) but I could be wrong. Or where else would that data come from?
因此，我认为，每当用户登录时，我都可以在会话中添加一些必要的变量，这些变量将添加到Application_PostAuthenticateRequest事件处理程序中的自定义IIdentity中。然而，我的上下文。Session在那里是空的，所以这也不是正确的方法。
我已经为此工作了一天了，我觉得我遗漏了一些东西。这应该不难，对吧?我也对随之而来的所有(半)相关的东西感到困惑。MembershipProvider, MembershipUser, RoleProvider, ProfileProvider, IPrincipal, IIdentity, FormsAuthentication....难道只有我一个人对这一切感到困惑吗?
如果有人能告诉我一个简单，优雅，高效的解决方案来存储一些额外的数据在IIdentity没有所有额外的模糊。那太好了!我知道在SO上有类似的问题，但如果我需要的答案在那里，我一定是忽略了。
下面是一个完成这项工作的例子。bool isValid是通过查看一些数据存储(假设您的用户数据库)来设置的。UserID只是我维护的一个ID。您可以向用户数据添加其他信息，如电子邮件地址。
protected void btnLogin_Click(object sender, EventArgs e)
{
//Hard Coded for the moment
bool isValid=true;
if (isValid)
{
string userData = String.Empty;
userData = userData + "UserID=" + userID;
FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(1, username, DateTime.Now, DateTime.Now.AddMinutes(30), true, userData);
string encTicket = FormsAuthentication.Encrypt(ticket);
HttpCookie faCookie = new HttpCookie(FormsAuthentication.FormsCookieName, encTicket);
Response.Cookies.Add(faCookie);
//And send the user where they were heading
string redirectUrl = FormsAuthentication.GetRedirectUrl(username, false);
Response.Redirect(redirectUrl);
}
}
在全局asax中添加以下代码来检索您的信息
protected void Application_AuthenticateRequest(Object sender, EventArgs e)
{
HttpCookie authCookie = Request.Cookies[
FormsAuthentication.FormsCookieName];
if(authCookie != null)
{
//Extract the forms authentication cookie
FormsAuthenticationTicket authTicket =
FormsAuthentication.Decrypt(authCookie.Value);
// Create an Identity object
//CustomIdentity implements System.Web.Security.IIdentity
CustomIdentity id = GetUserIdentity(authTicket.Name);
//CustomPrincipal implements System.Web.Security.IPrincipal
CustomPrincipal newUser = new CustomPrincipal();
Context.User = newUser;
}
}
稍后使用该信息时，可以按如下方式访问自定义主体。
(CustomPrincipal)this.User
or
(CustomPrincipal)this.Context.User
这将允许您访问自定义用户信息。
我尝试了LukeP建议的解决方案，发现它不支持Authorize属性。所以，我做了一些修改。
public class UserExBusinessInfo
{
public int BusinessID { get; set; }
public string Name { get; set; }
}
public class UserExInfo
{
public IEnumerable<UserExBusinessInfo> BusinessInfo { get; set; }
public int? CurrentBusinessID { get; set; }
}
public class PrincipalEx : ClaimsPrincipal
{
private readonly UserExInfo userExInfo;
public UserExInfo UserExInfo => userExInfo;
public PrincipalEx(IPrincipal baseModel, UserExInfo userExInfo)
: base(baseModel)
{
this.userExInfo = userExInfo;
}
}
public class PrincipalExSerializeModel
{
public UserExInfo UserExInfo { get; set; }
}
public static class IPrincipalHelpers
{
public static UserExInfo ExInfo(this IPrincipal @this) => (@this as PrincipalEx)?.UserExInfo;
}
[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Login(LoginModel details, string returnUrl)
{
if (ModelState.IsValid)
{
AppUser user = await UserManager.FindAsync(details.Name, details.Password);
if (user == null)
{
ModelState.AddModelError("", "Invalid name or password.");
}
else
{
ClaimsIdentity ident = await UserManager.CreateIdentityAsync(user, DefaultAuthenticationTypes.ApplicationCookie);
AuthManager.SignOut();
AuthManager.SignIn(new AuthenticationProperties { IsPersistent = false }, ident);
user.LastLoginDate = DateTime.UtcNow;
await UserManager.UpdateAsync(user);
PrincipalExSerializeModel serializeModel = new PrincipalExSerializeModel();
serializeModel.UserExInfo = new UserExInfo()
{
BusinessInfo = await
db.Businesses
.Where(b => user.Id.Equals(b.AspNetUserID))
.Select(b => new UserExBusinessInfo { BusinessID = b.BusinessID, Name = b.Name })
.ToListAsync()
};
JavaScriptSerializer serializer = new JavaScriptSerializer();
string userData = serializer.Serialize(serializeModel);
FormsAuthenticationTicket authTicket = new FormsAuthenticationTicket(
1,
details.Name,
DateTime.Now,
DateTime.Now.AddMinutes(15),
false,
userData);
string encTicket = FormsAuthentication.Encrypt(authTicket);
HttpCookie faCookie = new HttpCookie(FormsAuthentication.FormsCookieName, encTicket);
Response.Cookies.Add(faCookie);
return RedirectToLocal(returnUrl);
}
}
return View(details);
}
最后是global。asax。cs
protected void Application_PostAuthenticateRequest(Object sender, EventArgs e)
{
HttpCookie authCookie = Request.Cookies[FormsAuthentication.FormsCookieName];
if (authCookie != null)
{
FormsAuthenticationTicket authTicket = FormsAuthentication.Decrypt(authCookie.Value);
JavaScriptSerializer serializer = new JavaScriptSerializer();
PrincipalExSerializeModel serializeModel = serializer.Deserialize<PrincipalExSerializeModel>(authTicket.UserData);
PrincipalEx newUser = new PrincipalEx(HttpContext.Current.User, serializeModel.UserExInfo);
HttpContext.Current.User = newUser;
}
}
现在我可以通过调用来访问视图和控制器中的数据
User.ExInfo()
要退出，我只要打电话
AuthManager.SignOut();
AuthManager在哪里
HttpContext.GetOwinContext().Authentication
