asp.net – 使用表单验证模拟

罗伯特提到的Visual Studio Magazine article是一个很好的资源。文章中的示例代码有一些问题，所以我在下面包括一些工作代码。

注意：如果您正在使用Visual Studio，请确保启动“以管理员身份运行”，以避免UAC阻止模拟的问题。

// in your login page (hook up to OnAuthenticate event)
protected void LoginControl_Authenticate(object sender,AuthenticateEventArgs e)
{
    int token;
    // replace "YOURDOMAIN" with your actual domain name
    e.Authenticated = LogonUser(LoginUser.UserName,"YOURDOMAIN",LoginUser.Password,8,out token);
    if (e.Authenticated) {
        Session.Add("principal",new WindowsPrincipal(new WindowsIdentity(new IntPtr(token))));
    }
}

[DllImport("advapi32.dll",SetLastError = true)]
public static extern bool LogonUser(string lpszUsername,string lpszDomain,string lpszPassword,int dwLogonType,int dwLogonProvider,out int TokenHandle);


// in global.asax.cs
void Application_PreRequestHandlerExecute(object send,EventArgs e)
{
    if (Thread.CurrentPrincipal.Identity.IsAuthenticated == true && HttpContext.Current.Session != null) {
        WindowsPrincipal windowsPrincipal = (WindowsPrincipal)Session["principal"];
        Session["principal"] = (GenericPrincipal)Thread.CurrentPrincipal;
        Thread.CurrentPrincipal = windowsPrincipal;
        HttpContext.Current.User = windowsPrincipal;
        HttpContext.Current.Items["identity"] = ((WindowsIdentity)windowsPrincipal.Identity).Impersonate();
    }
}

// in global.asax.cs
void Application_PostRequestHandlerExecute(object send,EventArgs e)
{
    if (HttpContext.Current.Session != null && Session["principal"] as GenericPrincipal != null) {
        GenericPrincipal genericPrincipal = (GenericPrincipal)Session["principal"];
        Session["principal"] = (WindowsPrincipal)Thread.CurrentPrincipal;
        Thread.CurrentPrincipal = genericPrincipal;
        HttpContext.Current.User = genericPrincipal;
        ((WindowsImpersonationContext)HttpContext.Current.Items["identity"]).Undo();
    }
}

// test that impersonation is working (add this and an Asp:Label to a test page)
protected void Page_Load(object sender,EventArgs e)
{
    try {
        // replace YOURSERVER and YOURDB with your actual server and database names
        string connstring = "data source=YOURSERVER;initial catalog=YOURDB;integrated security=True";
        using (SqlConnection conn = new SqlConnection(connstring)) {
            conn.Open();
            SqlCommand cmd = new SqlCommand("SELECT SUSER_NAME()",conn);
            using (SqlDataReader rdr = cmd.ExecuteReader()) {
                rdr.Read();
                Label1.Text = "SUSER_NAME() = " + rdr.GetString(0);
            }
        }
    }
    catch {
    }
}

更新：

你也应该处理Application_EndRequest，因为像Response.End()这样的调用将绕过Application_PostRequestHandlerExecute。

另一个问题是WindowsIdentity可能会收集垃圾，因此您应该在每次请求时从登录标记创建一个新的WindowsIdentity和WindowsPrincipal。

UPDATE2：

我不知道为什么这会被下调，因为它有效。我添加了pinvoke签名和一些测试代码。再次，使用“以管理员身份运行”启动Visual Studio。谷歌怎么做，如果你不知道如何。