c# - 有没有办法在 Api Controller 中获取当前用户

Question

我正在使用 asp.net 授权通过 Angular js 进行客户端登录，我需要让当前用户登录

我需要让当前用户在我的记录器表中保存任何操作，并且 httpcontext.session.current 为 null ，是否有另一种方法可以在 session 中保存登录的用户或其他东西以便随时获取它

public class ApplicationOAuthProvider : OAuthAuthorizationServerProvider
{
    private readonly string _publicClientId;

    static ERPV02_03Entities db;

    public ApplicationOAuthProvider(string publicClientId)
    {
        if (publicClientId == null)
        {
            throw new ArgumentNullException("publicClientId");
        }
        db = SingleTonConText.Instance;

       _publicClientId = publicClientId;
    }

    public override async Task GrantResourceOwnerCredentials(OAuthGrantResourceOwnerCredentialsContext context)
    {
        var userManager = context.OwinContext.GetUserManager<ApplicationUserManager>();

        ApplicationUser user = await userManager.FindAsync(context.UserName, context.Password);

        if (user == null)
        {
            context.SetError("invalid_grant", "The user name or password is incorrect.");
            return;
        }

        ClaimsIdentity oAuthIdentity = await user.GenerateUserIdentityAsync(userManager,
        OAuthDefaults.AuthenticationType);
        ClaimsIdentity cookiesIdentity = await user.GenerateUserIdentityAsync(userManager,
        CookieAuthenticationDefaults.AuthenticationType);

        AuthenticationProperties properties = CreateProperties(user.UserName);
        AuthenticationTicket ticket = new AuthenticationTicket(oAuthIdentity, properties);
        context.Validated(ticket);
        context.Request.Context.Authentication.SignIn(cookiesIdentity);



    }

    public  override Task TokenEndpoint(OAuthTokenEndpointContext context)
    {
        foreach (KeyValuePair<string, string> property in context.Properties.Dictionary)
        {
            context.AdditionalResponseParameters.Add(property.Key, property.Value);

        }
        var data= Task.FromResult<object>(null); 
        return data;
    }

    public override Task ValidateClientAuthentication(OAuthValidateClientAuthenticationContext context)
    {
        // Resourcee owner password credentials does not provide a client ID.
        if (context.ClientId == null)
        {
            context.Validated();
        }

        return Task.FromResult<object>(null);
    }

    public override Task ValidateClientRedirectUri(OAuthValidateClientRedirectUriContext context)
    {
        if (context.ClientId == _publicClientId)
        {
            Uri expectedRootUri = new Uri(context.Request.Uri, "/");

            if (expectedRootUri.AbsoluteUri == context.RedirectUri)
            {
                context.Validated();    
    }
        }

        return Task.FromResult<object>(null);
    }

    private static View_Emps GetUserInfo(string username)
    {
        var user = new View_Emps();
        try
        {
user = db.View_Emps.FirstOrDefault(p => 
                                       p.Emp_UserName == username);
    HttpContext.Current.Session.Add("user", user);


        }
        catch (Exception e)
        {
            throw e;
        }


        return user; 
    }

    public static AuthenticationProperties CreateProperties(string userName)
    {
        var user = GetUserInfo(userName);
        JavaScriptSerializer js = new JavaScriptSerializer();
            var res = js.Serialize(user);
        IDictionary<string, string> data = new Dictionary<string, string>
        {
            { "User", res }
        };
return new AuthenticationProperties(data);}}


public  void SaveLog( T Obj, string Operation)
    {



        string hostName = Dns.GetHostName(); // Retrive the Name of HOST  IpAddress
        string myIP = Dns.GetHostEntry(hostName).AddressList[0].ToString();

        var user = HttpContext.Current.Session["user"] as View_Emps;
        MyLogger.Data =  new JavaScriptSerializer().Serialize(Obj);
        MyLogger.OperationType = Operation;
        MyLogger.TableName = typeof(T).Name;
        MyLogger.DateTime = DateTime.Now;
        MyLogger.User_ID = user.Emp_ID;
        MyLogger.IP_Address = myIP;
        db.Loggers.Add(MyLogger);
        Commit();



    }

Answer 1

您可以从 IPrincipal 获取 Api Controller 中的当前登录用户，并且无需为其引用任何命名空间，

...
var user = User;   //<= "User" comes from System.Security.Principal.IPrincipal
...

您还可以从 IPrincipal 获取其他属性，例如

• 身份验证类型
• 已通过身份验证
• 姓名

从此类用户的身份来看，

var authType = User.Identity.AuthenticationType;
var isAuthenticated = User.Identity.IsAuthenticated;
var name = User.Identity.Name;

编辑:

您可以在 GrantResourceOwnerCredentials 方法中添加自定义字段作为对您身份的声明，例如，

...
ClaimsIdentity oAuthIdentity = await user.GenerateUserIdentityAsync(userManager,
               OAuthDefaults.AuthenticationType);

oAuthIdentity.AddClaim(new Claim("UserId", user.Id));   //<= The UserId add here as claim
oAuthIdentity.AddClaim(new Claim("UserName", user.UserName));  //<= The UserName add here as claim

ClaimsIdentity cookiesIdentity = await user.GenerateUserIdentityAsync(userManager,
                CookieAuthenticationDefaults.AuthenticationType);
...

然后在 Api Controller 操作方法中，您可以获得这个 UserId，例如，

var userId = ((ClaimsIdentity)User.Identity).FindFirst("UserId");
var userName = ((ClaimsIdentity)User.Identity).FindFirst("UserName");

编辑1:

在这里，我从声明中获取了 UserId 和 UserName。

从 Angular js HTTP 中，您可以发送您的身份验证承载 token ，例如

module.run(function($http) {
  $http.defaults.headers.common.Authorization = 'bearer TGAf8ViNUtzb9RP9OCBXHN4Ewm0dQbTMb6x4wJMgi4Wk8pq-QEQLIhp_W1A-9jQa7Rlqa60vsQ2ubbjUL0wGosEwaHFDlbdkQqXbOP_VlBJMxN2KnGQZnmvWZvpLPqMF-jpWzPDvBwtVHnh3AjLviPX0gPQjxZAC1ujIeB0p-QZ8yE1VCnLa8Xql01XDXlLVBCzk1UOqt_er-Gx6pL8SemayY8dqVVUgSZTYhcceLLuWQ-Cy3QATJmoJ41K-7ktAeUTz5H7V3ImlC_b8qnnN8sj7k7WRT51q27pUO4-bzJzkD4LGVvDUqaeAhBEqKyS9TkpMIFbRDMol5ZiJcp2vTunOOYP42Mw7GJv09ctoXegKkWo1LWDsSDxeWP5KQed_VGX193pZvQtvz06g2iyXwuP8Q6NaJcXTF43-M9p2HWgGuXT531YXv59euaWevj1AMJkazlZ61uzYi7KGLHKgCwzAMXLKwzBGK4QP0C4tqonowSdTttH93LBOJHjrDepk';
});

通过在角度端使用上述代码，您的请求将通过 Http 为每个请求添加身份验证 token

了解更多关于$http的信息

编辑2:

将这些数据添加为 GrantResourceOwnerCredentials 中的声明，您希望将其转移到工作单元存储库中，例如

oAuthIdentity.AddClaim(new Claim("Id", user.Id));
oAuthIdentity.AddClaim(new Claim("UserName", user.UserName));
oAuthIdentity.AddClaim(new Claim("Email", user.Email));
oAuthIdentity.AddClaim(new Claim("PhoneNumber", user.PhoneNumber));

然后在 Controller 方法中读取这些数据，例如

ClaimsPrincipal principal = Request.GetRequestContext().Principal as ClaimsPrincipal;
var claims = principal.Claims.Select(x => new { type = x.Type, value = x.Value });

var id = claims.Where(x => x.type == "Id").FirstOrDefault().value;
var userName = claims.Where(x => x.type == "UserName").FirstOrDefault().value;
var email = claims.Where(x => x.type == "Email").FirstOrDefault().value;
var phoneNumber = claims.Where(x => x.type == "PhoneNumber").FirstOrDefault().value;

ApplicationUser applicationUser = new ApplicationUser  //This model is pre generated by web api project and reside in `Models` folder
{
    Id = id,
    UserName = userName,
    Email = email,
    PhoneNumber = phoneNumber
 };

现在您可以自由使用此对象 applicationUser 来传入您的工作单元存储库。