如何在VB6中获取当前用户的SID？

Question

我有一些必须在 VB6 中维护的旧代码。我们需要添加查找当前用户的 SID 的功能。任何人都可以向我指出一些显示如何执行此操作的代码吗？预先感谢您的帮助！

Answer 1

试试这个

Option Explicit

'--- for OpenProcessToken
Private Const TOKEN_READ                    As Long = &H20008

Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (pTo As Any, uFrom As Any, ByVal lSize As Long)
Private Declare Function GetCurrentProcess Lib "kernel32" () As Long
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long
Private Declare Function OpenProcessToken Lib "advapi32.dll" (ByVal ProcessHandle As Long, ByVal DesiredAccess As Long, TokenHandle As Long) As Long
Private Declare Function GetTokenInformation Lib "advapi32.dll" (ByVal TokenHandle As Long, ByVal TokenInformationClass As Long, TokenInformation As Any, ByVal TokenInformationLength As Long, ReturnLength As Long) As Long
Private Declare Function ConvertSidToStringSid Lib "advapi32.dll" Alias "ConvertSidToStringSidA" (ByVal lpSid As Long, lpString As Long) As Long
Private Declare Function LocalFree Lib "kernel32" (ByVal hMem As Long) As Long
Private Declare Function lstrlen Lib "kernel32" Alias "lstrlenA" (ByVal lpString As Long) As Long

Public Function GetCurrentUserSid() As String
    Dim hProcessID      As Long
    Dim hToken          As Long
    Dim lNeeded         As Long
    Dim baBuffer()      As Byte
    Dim sBuffer         As String
    Dim lpSid           As Long
    Dim lpString        As Long

    hProcessID = GetCurrentProcess()
    If hProcessID <> 0 Then
        If OpenProcessToken(hProcessID, TOKEN_READ, hToken) = 1 Then
            Call GetTokenInformation(hToken, 1, ByVal 0, 0, lNeeded)
            ReDim baBuffer(0 To lNeeded)
            '--- enum TokenInformationClass { TokenUser = 1, TokenGroups = 2, ... }
            If GetTokenInformation(hToken, 1, baBuffer(0), UBound(baBuffer), lNeeded) = 1 Then
                Call CopyMemory(lpSid, baBuffer(0), 4)
                If ConvertSidToStringSid(lpSid, lpString) Then
                    sBuffer = Space(lstrlen(lpString))
                    Call CopyMemory(ByVal sBuffer, ByVal lpString, Len(sBuffer))
                    Call LocalFree(lpString)
                    GetCurrentUserSid = sBuffer
                End If
            End If
            Call CloseHandle(hToken)
        End If
        Call CloseHandle(hProcessID)
    End If
End Function

Answer 2

尝试实现此功能：

Declare Function LookupAccountSid Lib "advapi32.dll" _
      Alias "LookupAccountSidA" (ByVal lpSystemName As String, _
      ByVal Sid As Long, ByVal Name As String, cbName As Long, _
      ByVal ReferencedDomainName As String, _
      cbReferencedDomainName As Long, peUse As Integer) As Long

这是一个已实现的链接。

Answer 3

对 MSDN 的一点浏览表明 NetUserGetInfo 函数就是您正在寻找的函数（http://msdn.microsoft.com/en-us/library/aa370654%28VS.85%29.aspx)。 Microsoft 已经在这里为您编写了一个示例： http://support.microsoft.com/kb/151774

Answer 4

这是示例，来自名称混乱但值得信赖的VB NET 站点（在 Microsoft 发明 .NET 之前专门用于 VB6） ）

这个演示展示了如何调用
获取当前进程，查找帐户Sid，
分配并初始化Sid，
OpenProcessToken，以及
获取TokenInformation以便
判断当前进程是否为
在管理员下执行
帐户。这通常意味着
用户是管理员组的成员，
但在某些情况下（例如
作为服务运行，或者可能
指定一个不同于
由 GetCurrentProcess 返回），
返回值表明是否
进程正在帐户下运行
具有管理员权限。 （注意
插图应该说“当前
“进程”而不是“用户”才是最重要的
准确。）