从WCF操作中获取ClientCredentials

Question

我的WCF服务使用自定义凭证验证器进行自定义基于消息的安全性，因为我想确保每个调用我的Web服务的客户端操作在我的数据库中都有对应的用户名和密码。

Imports System.IdentityModel.Selectors 
Imports System.IdentityModel.Tokens 

Public Class CredentialsValidator 
    Inherits UserNamePasswordValidator 

    Public Overrides Sub Validate(ByVal userName As String, ByVal password As String) 
     Dim authenticationApi As New AuthenticationGateway() 
     If Not authenticationApi.IsValid(userName, password) Then 
      Throw New SecurityTokenException("Validation Failed.") 
     End If 
    End Sub 
End Class 

事情是，一旦用户通过认证我想使用的用户名在我的OperationContract的实现，使基于上下文的呼叫。

<ServiceContract(Name:="IMyService")> _ 
Public Interface IMyService 
    <OperationContract()> _ 
    Function GetAccountNumber() As String 
End Interface 

Public Class IntegrationService 
    Implements IIntegrationService 

    Public Function GetAccountNumber() As String Implements IMyService.GetAccountNumber 
     Dim userName As String '' Here I want the userName set from credentials 
     Dim accountApi As New AccountGateway() 
     Return accountApi.GetAccountNumber(userName) 
    End Function 
End Class 

我不能依靠被调用者的诚信指定其实际用户名，使不还传递一个密码无法通过。我想避免每次打电话到我的Web服务都必须接受ClientCredentials。

谢谢。

Answer 1

Public Class IntegrationService 
    Implements IIntegrationService 

    Private ReadOnly Property UserName As String 
     Get 
      Return ServiceSecurityContext.Current.PrimaryIdentity.Name 
     End Get 
    End Property 

    Public Function GetAccountNumber() As String Implements IMyService.GetAccountNumber 
     Dim accountApi As New AccountGateway() 
     Return accountApi.GetAccountNumber(UserName) 
    End Function 
End Class