是否有可能使用Amazon.com作爲身份驗證提供商

Question

我想我能找到有關此主題的信息，但似乎我的google-fu今天很虛弱。我正在構建一個消耗Amazon.com產品廣告API的Silverlight應用程序。我想爲我的應用程序添加身份驗證，但我想實現OpenId，而不是使用默認表單基本身份驗證。我看到很多使用雅虎或Google的供應商。我確實記得至少有一個視線，但不記得它是哪個視線，而是使用Amazon.com作爲提供者。

如果有人能指出我在這方面的文檔正確的方向，這將是偉大的。

編輯：我現在記得它是允許您使用Amazon.com登錄的Target.com。

Answer 1

我對OpenID瞭解不多，但你幾乎不得不寫一個自定義的authenticatin服務，這並沒有那麼糟糕。 （順便說一下它仍然會利用窗體身份驗證這實際上是convienent）

如果你知道如何通過代碼驗證.....

在服務器端，你需要三件。一個類來保存用戶數據，從窗體身份驗證繼承的類..並處理該異常登錄一類..

這裏是服務器代碼的例子（對不起減去公開識別碼校驗）

using System.ServiceModel.DomainServices.Server.ApplicationServices; 

public class UserDTO : UserBase 
{ 
    public string Email { get; set; } 

    //Must be string since will be included in HTTP Headers 
    public string Id { get; set; } 

    public bool CanCreateSomething { get; set;} 
} 

using System; using System.Data.Objects; using System.ServiceModel.DomainServices.Hosting;

[EnableClientAccess] 
public class CustomAuthenticationService : FormsAuthenticationService<UserDTO> 
{ 


    protected override UserDTO ValidateCredentials(string name, string password, string customData, 
                out string userData) 
    { 
     UserDTO user = null; 
     userData = null; 

     OpenIDUser OIDusr; 

     if OIDusr != null) 
     { 
      user = new UserDTO { Name = OIDusr.Description, Email = OIDusr.PrimaryEmail, Id= OIDusr.Id.ToString() }; 
     } 

     if (user != null) 
     { 
      //Set custom data fields for HTTP session 
      userData = user.PartyId + ":" + user.Email; 
     } 


     return user; 
    } 

}

[Serializable] 
public class FormsAuthenticationLogonException : Exception 
{ 
    public FormsAuthenticationLogonException(string message) : base(message){} 
} 

public abstract class FormsAuthenticationService<TUser> : DomainService, IAuthentication<TUser> 
    where TUser : UserBase 
{ 
    #region IAuthentication<TUser> Members 

    public TUser GetUser() 
    { 
     var currentUser = ServiceContext.User; 
     if ((currentUser != null) && currentUser.Identity.IsAuthenticated) 
     { 
      var userIdentity = currentUser.Identity as FormsIdentity; 
      if (userIdentity != null) 
      { 
       var ticket = userIdentity.Ticket; 
       if (ticket != null) 
       { 
        return GetCurrentUser(currentUser.Identity.Name, ticket.UserData); 
       } 
      } 
     } 
     return GetDefaultUser(); 
    } 


    public TUser Login(string userName, string password, bool isPersistent, string customData) 
    { 
     string userData; 
     TUser user = ValidateCredentials(userName, password, customData, out userData); 
     if (user != null) 
     { 
      FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(/* version */ 
       1, userName, DateTime.Now, DateTime.Now.AddMinutes(30), 
       isPersistent, userData, FormsAuthentication.FormsCookiePath); 
      string encryptedTicket = FormsAuthentication.Encrypt(ticket); 
      HttpCookie authCookie = new HttpCookie(FormsAuthentication.FormsCookieName, encryptedTicket); 
      HttpContextBase httpContext = (HttpContextBase) ServiceContext.GetService(typeof (HttpContextBase)); 
      httpContext.Response.Cookies.Add(authCookie); 
     } 
     else 
     { 
      HttpContextBase httpContext = (HttpContextBase) ServiceContext.GetService(typeof (HttpContextBase)); 
      httpContext.AddError(new FormsAuthenticationLogonException("Username or password is not correct.")); 
     } 
     return user; 
    } 

    public TUser Logout() 
    { 
     FormsAuthentication.SignOut(); 
     return GetDefaultUser(); 
    } 

    public void UpdateUser(TUser user) 
    { 
     throw new NotImplementedException(); 
    } 

    #endregion 

    protected abstract TUser GetCurrentUser(string name, string userData); 

    protected virtual TUser GetDefaultUser() 
    { 
     return null; 
    } 

    protected abstract TUser ValidateCredentials(string name, string password, string customData, 
               out string userData); 
} 

在客戶端.....

LoginParameters loginParameters = new LoginParameters(UserName, Password); 

     WebContextBase.Current.Authentication.Login(loginParameters, 
      delegate(LoginOperation operation)  
      {      
       if (operation.HasError)  
       { 
        App.IsBusy = false; 
        operation.MarkErrorAsHandled(); 
        UserName = string.Empty; 
        Password = string.Empty; 
        MessageBox.Show("Username or Password is incorrect!"); 
        return;     
       } 

       //Login Success 
       CustomAuthenticationContext authContext = new CustomAuthenticationContext(); 
       authContext.Load(authContext.GetUserQuery(), UserLoaded, false); 
      }, null);