如何可靠地在所有版本的Windows上读取用户的显示(第一个和最后一个)名称？

Question

我发现在Windows 7 64位上,在具有域名的机器上,GetUserNameEx(3,....)应该将扩展名称格式DisplayName(== 3)放入缓冲区,工作正常.

但是,它不适用于Windows 7 32位,工作组上的虚拟机,而不是域,它返回ERROR_NONE_MAPPED.

例如,你如何以适用于Windows的方式阅读该人的友好名称"Fred Smith"？GetUserNameEx明显被破坏了.实际上,没有破坏,我被告知,只是不打算为不在域上的用户工作.我想知道为什么不存在本地SAM信息？并且似乎没有其他直接API来执行此操作.

如果Windows为您提供ERROR_NONE_MAPPED,那么您运气不佳,可能不在域上.所以这不是API的友好区域.

[看起来有可能,调用NetUserGetInfo,读取本地SAM信息,当不在域上时,但您需要首先知道用户名和密码,然后它可能会查找友好名称.]

相关问题:这里没有提到问题

Answer 1

这是Warren的解决方案移植到C#.我添加了从域名中检索域控制器的IP,因为至少在我的域上,仅使用\\<domain>服务器名称不起作用.

using System;
using System.Text;
using System.Net;
using System.Runtime.InteropServices;
using System.DirectoryServices.ActiveDirectory;

[DllImport("secur32.dll", CharSet = CharSet.Auto)]
private static extern int GetUserNameEx (int nameFormat, StringBuilder userName, ref uint userNameSize);

[DllImport("netapi32.dll", CharSet = CharSet.Unicode, ExactSpelling = true)]
private static extern int NetUserGetInfo ([MarshalAs(UnmanagedType.LPWStr)] string serverName,
                                          [MarshalAs(UnmanagedType.LPWStr)] string userName,
                                          int level, out IntPtr bufPtr);

[DllImport("netapi32.dll", CharSet = CharSet.Unicode, ExactSpelling = true)]
private static extern long NetApiBufferFree (out IntPtr bufPtr);

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct USER_INFO_10
{
    [MarshalAs(UnmanagedType.LPWStr)] public string usri10_name;
    [MarshalAs(UnmanagedType.LPWStr)] public string usri10_comment;
    [MarshalAs(UnmanagedType.LPWStr)] public string usri10_usr_comment;
    [MarshalAs(UnmanagedType.LPWStr)] public string usri10_full_name;
}

private string getUserDisplayName ()
{
    var username = new StringBuilder(1024);
    uint userNameSize = (uint) username.Capacity;

    // try to get display name and convert from "Last, First" to "First Last" if necessary
    if (0 != GetUserNameEx(3, username, ref userNameSize))
        return Regex.Replace(username.ToString(), @"(\S+), (\S+)", "$2 $1");

    // get SAM compatible name <server/machine>\\<username>
    if (0 != GetUserNameEx(2, username, ref userNameSize))
    {
        IntPtr bufPtr;
        try
        {
            string domain = Regex.Replace(username.ToString(), @"(.+)\\.+", @"$1");
            DirectoryContext context = new DirectoryContext(DirectoryContextType.Domain, domain);
            DomainController dc = DomainController.FindOne(context);

            if (0 == NetUserGetInfo(dc.IPAddress,
                                    Regex.Replace(username.ToString(), @".+\\(.+)", "$1"),
                                    10, out bufPtr))
            {
                var userInfo = (USER_INFO_10) Marshal.PtrToStructure(bufPtr, typeof (USER_INFO_10));
                return Regex.Replace(userInfo.usri10_full_name, @"(\S+), (\S+)", "$2 $1");
            }
        }
        finally
        {
            NetApiBufferFree(out bufPtr);
        }
    }

    return String.Empty;
}