c# - 从 WindowsIdentity 和 Thread.CurrentPrincipal 检索 WindowsPrincipal 之间有什么区别？

Question

我正在尝试弄清楚为什么基于属性的安全性在 WCF 中没有像我预期的那样工作，我怀疑它可能与以下内容有关:

AppDomain.CurrentDomain.SetPrincipalPolicy(PrincipalPolicy.WindowsPrincipal);

var identity = new WindowsIdentity("ksarfo");
var principal = new WindowsPrincipal(identity);
Console.WriteLine("\nChecking whether current user [" + identity.Name + "] is member of [" + groupName + "]");
Console.WriteLine(principal.IsInRole(groupName)); // returns true

principal = (WindowsPrincipal)Thread.CurrentPrincipal;
identity = (WindowsIdentity) principal.Identity;
Console.WriteLine("\nChecking whether current user [" + identity.Name + "] is member of [" + groupName + "]");
Console.WriteLine(principal.IsInRole(groupName)); // returns false

我不明白为什么函数调用的结果不同:

principal.IsInRole(groupName)

为了完整起见，代码实际失败的地方在这里:

PrincipalPermission(SecurityAction.Demand, Role = "PortfolioManager")]

感谢帮助。

Answer 1

可能是因为这不是同一个类。

查看 MSDN:

• Thread.CurrentPrincipal
  • IPrincipal
    • IsInRole
• WindowsPrincipal
  • IsInRole

所以，如果有不同的类，可能会有不同的实现。

编辑:

我试过这段代码:

public class InGroup
{
    public string Name { get; set; }
    public bool Current { get; set; }
    public bool Fixe { get; set; }
    public bool Thread { get; set; }
}

WindowsIdentity current = System.Security.Principal.WindowsIdentity.GetCurrent();
WindowsPrincipal principalcurrent = new WindowsPrincipal(current);

WindowsIdentity fixe = new WindowsIdentity("JW2031");
WindowsPrincipal principalFixe = new WindowsPrincipal(fixe);

IPrincipal principalThread = System.Threading.Thread.CurrentPrincipal;

List<InGroup> ingroups = new List<InGroup>();
foreach (IdentityReference item in current.Groups)
{
    IdentityReference reference = item.Translate(typeof(NTAccount));
    Console.WriteLine("{0}\t{1}\t{2}\t{3}",
        reference.Value,
        principalcurrent.IsInRole(reference.Value),
        principalFixe.IsInRole(reference.Value),
        principalThread.IsInRole(reference.Value));

    ingroups.Add(new InGroup()
    {
        Name = reference.Value,
        Current = principalcurrent.IsInRole(reference.Value),
        Fixe = principalFixe.IsInRole(reference.Value),
        Thread = principalThread.IsInRole(reference.Value)
    });
}
foreach (IdentityReference item in fixe.Groups)
{
    IdentityReference reference = item.Translate(typeof(NTAccount));
    if (ingroups.FindIndex(g => g.Name == reference.Value) == -1)
    {
        ingroups.Add(new InGroup()
        {
            Name = reference.Value,
            Current = principalcurrent.IsInRole(reference.Value),
            Fixe = principalFixe.IsInRole(reference.Value),
            Thread = principalThread.IsInRole(reference.Value)
        });
        Console.WriteLine("{0}\t{1}\t{2}\t{3}",
            reference.Value,
            principalcurrent.IsInRole(reference.Value),
            principalFixe.IsInRole(reference.Value),
            principalThread.IsInRole(reference.Value));
    }
}

这里是 the result

如您所见，我没有使用不同方法的相同组。所以(因为我是本地计算机的管理员)我认为 WindowsIdentity.GetCurrent 将从 AD 获取用户，而 WindowsPrincipal(WindowsIdentity("")) 将从本地计算机获取用户。

在我的网络应用程序中，我获得了尽可能低的授权(我认为)。但是，我对 consoleapp 没有任何解释......

这只是假设，但这是连贯的。