WCF身份验证 - 验证邮件的安全性时发生错误

Question

我在连接到我的WCF服务时遇到问题clientCredentialType="UserName".

当我运行下面的代码时,我收到一个错误

FaultException:验证消息的安全性时发生错误.

当我玩弄一些绑定值时,我也会得到Access is denied..

Fiddler说没有授权标题,我也无法在请求中找到用户名或密码.

以下是我配置的摘录:

  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
  </system.webServer>
    <services>
      <service name="InventoryServices.MobileAPI"  behaviorConfiguration="customBehaviour">
        <endpoint address=""
                  binding="basicHttpBinding"
                  bindingConfiguration="secureHttpBinding"
                  contract="InventoryServices.IMobileAPI"/>

        <endpoint address="mex"
                  binding="mexHttpsBinding"
                  contract="IMetadataExchange" />
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="customBehaviour">
          <serviceSecurityAudit auditLogLocation="Application" serviceAuthorizationAuditLevel="Failure" messageAuthenticationAuditLevel="Failure" suppressAuditFailure="true" />
          <!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
          <serviceMetadata httpsGetEnabled="true"/>
          <!-- To receive exception details in faults for debugging purposes, set the value below to true.  Set to false before deployment to avoid disclosing exception information -->
          <serviceDebug includeExceptionDetailInFaults="true"/>
          <serviceCredentials>
            <userNameAuthentication userNamePasswordValidationMode="Custom"
               customUserNamePasswordValidatorType="InventoryLibrary.Helpers.UserAuthentication,InventoryLibrary"/>
          </serviceCredentials>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
    <bindings>
      <basicHttpBinding>
        <binding name="secureHttpBinding">
          <security mode="TransportWithMessageCredential">
            <transport clientCredentialType="Basic" proxyCredentialType="Basic" realm="MyRealm"/>
            <message clientCredentialType="UserName" algorithmSuite="Default"  />
          </security>
        </binding>
      </basicHttpBinding>
    </bindings>

我的用户名/密码验证器如下所示:

  public class UserAuthentication : UserNamePasswordValidator {
        public override void Validate(string userName, string password) {

            EntitiesContext db = new EntitiesContext();
            db.Logs.Add(new DomainModels.Log() {
                DateLogged = DateTime.Now,
                Message = "hit auth",
                Type = DomainModels.LogType.Info
            });
            db.SaveChanges();

            try {

                if (userName == "test" && password == "test123") {
                    Console.WriteLine("Authentic User");
                }
            }
            catch (Exception ex) {
                throw new FaultException("Unknown Username or Incorrect Password");
            }
        }
    }

我将此作为对我服务的简单测试:

[OperationContract]
[XmlSerializerFormat]
void Test();

[PrincipalPermission(SecurityAction.Demand, Name = "test")]
public void Test() {

}

我的服务器上有自签名的SSL证书,我可以访问我的服务/元数据.

然后我在控制台应用程序中添加了一个服务引用,并尝试使用以下代码连接到该服务:

class Program {
    static void Main(string[] args) {

        Stuff.InitiateSSLTrust();

        BasicHttpBinding binding = new BasicHttpBinding();
        binding.Security.Mode = BasicHttpSecurityMode.Transport;
        binding.Security.Transport.Realm = "MyRealm";

        ServiceReference1.MobileAPIClient serviceProxy = new ServiceReference1.MobileAPIClient(binding, new EndpointAddress("https://xx.xx.xx.xx/InventoryServices.MobileApi.svc"));

        serviceProxy.ClientCredentials.UserName.UserName = "test";
        serviceProxy.ClientCredentials.UserName.Password = "test123";

        try {

            var a = serviceProxy.Login("a", "b");
        }
        catch (Exception ex) {
            var ex2 = ex;
        }
    }
}

public class Stuff {
    public static void InitiateSSLTrust() {
        try {
            //Change SSL checks so that all checks pass
            ServicePointManager.ServerCertificateValidationCallback =
                new RemoteCertificateValidationCallback(
                    delegate { return true; }
                );
        }
        catch (Exception ex) {
        }
    }
}

我检查了服务器上的事件查看器,每个请求都会出现此错误:

MessageSecurityException:安全性处理器无法在消息中找到安全标头.这可能是因为消息是不安全的故障,或者因为通信方之间存在绑定不匹配.如果为安全性配置服务且客户端未使用安全性,则会发生这种情况.

Answer 1

您指定要使用的客户端,BasicHttpSecurityMode.Transport而服务是期望的BasicHttpSecurityMode.TransportWithMessageCredential.这是一个问题,因为服务正在SOAP消息头中查找客户端凭据,并且客户端不会使用以这种方式配置的绑定发送它们.

因此,这就是您正在目击的消息标题中不存在用户名/密码对的原因.因此,事件查看器是正确的,通信方之间存在绑定不匹配.

还要ClientCredentialType在客户端上设置以BasicHttpMessageCredentialType.UserName获得Message级别安全性.默认情况下BasicHttpBinding使用None哪些是匿名客户端.

以下是描述上述更改的代码段:

var basicHttpBinding = new BasicHttpBinding(
                              BasicHttpSecurityMode.TransportWithMessageCredential);
basicHttpBinding.Security.Message.ClientCredentialType = 
                                     BasicHttpMessageCredentialType.UserName;

Answer 2

这也可能是由于客户端和服务器之间的时间不同步造成的。如果证书或签名令牌基于时间无效，则An error occurred when verifying security for the message.可能会返回相同的消息。