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Option Explicit
Private Const CREATE_DEFAULT_ERROR_MODE = &H4000000
Private Const LOGON_WITH_PROFILE = &H1
Private Const LOGON_NETCREDENTIALS_ONLY = &H2
Private Const LOGON32_LOGON_INTERACTIVE = 2
Private Const LOGON32_PROVIDER_DEFAULT = 0
Private Type STARTUPINFO
cb As Long
lpReserved As Long
lpDesktop As Long
lpTitle As Long
dwX As Long
dwY As Long
dwXSize As Long
dwYSize As Long
dwXCountChars As Long
dwYCountChars As Long
dwFillAttribute As Long
dwFlags As Long
wShowWindow As Integer
cbReserved2 As Integer
lpReserved2 As Long
hStdInput As Long
hStdOutput As Long
hStdError As Long
End Type
Private Type PROCESS_INFORMATION
hProcess As Long
hThread As Long
dwProcessId As Long
dwThreadId As Long
End Type
Private Declare Function LogonUser Lib "advapi32.dll" Alias _
"LogonUserA" (ByVal lpszUsername As String, _
ByVal lpszDomain As String, ByVal lpszPassword As String, _
ByVal dwLogonType As Long, ByVal dwLogonProvider As Long, _
phToken As Long) As Long
Private Declare Function CreateProcessAsUser Lib "advapi32.dll" _
Alias "CreateProcessAsUserA" (ByVal hToken As Long, _
ByVal lpApplicationName As Long, _
ByVal lpCommandLine As String, _
ByVal lpProcessAttributes As Long, _
ByVal lpThreadAttributes As Long, _
ByVal bInheritHandles As Long, _
ByVal dwCreationFlags As Long, _
ByVal lpEnvironment As Long, _
ByVal lpCurrentDirectory As String, _
lpStartupInfo As STARTUPINFO, _
lpProcessInformation As PROCESS_INFORMATION) As Long
Private Declare Function CreateProcessWithLogonW Lib _
"advapi32.dll" (ByVal lpUsername As String, _
ByVal lpDomain As String, ByVal lpPassword As String, _
ByVal dwLogonFlags As Long,
ByVal lpApplicationName As Long, _
ByVal lpCommandLine As String,
ByVal dwCreationFlags As Long, _
ByVal lpEnvironment As Long, _
ByVal lpCurrentDirectory As String, _
ByRef lpStartupInfo As STARTUPINFO, _
ByRef lpProcessInformation As PROCESS_INFORMATION) As Long
Private Declare Function CloseHandle Lib "kernel32.dll" _
(ByVal hObject As Long) As Long
Private Declare Function SetErrorMode Lib "kernel32.dll" _
(ByVal uMode As Long) As Long
Private Type OSVERSIONINFO
dwOSVersionInfoSize As Long
dwMajorVersion As Long
dwMinorVersion As Long
dwBuildNumber As Long
dwPlatformId As Long
szCSDVersion As String * 128
End Type
Private Declare Function GetVersionExA Lib "kernel32.dll" _
(lpVersionInformation As OSVERSIONINFO) As Integer
Private Const VER_PLATFORM_WIN32_NT = &H2
Public Function W2KRunAsUser(ByVal UserName As String, _
ByVal Password As String, _
ByVal DomainName As String, _
ByVal CommandLine As String, _
ByVal CurrentDirectory As String) As Long
Dim si As STARTUPINFO
Dim pi As PROCESS_INFORMATION
Dim wUser As String
Dim wDomain As String
Dim wPassword As String
Dim wCommandLine As String
Dim wCurrentDir As String
Dim Result As Long
si.cb = Len(si)
wUser = StrConv(UserName + Chr$(0), vbUnicode)
wDomain = StrConv(DomainName + Chr$(0), vbUnicode)
wPassword = StrConv(Password + Chr$(0), vbUnicode)
wCommandLine = StrConv(CommandLine + Chr$(0), vbUnicode)
wCurrentDir = StrConv(CurrentDirectory + Chr$(0), vbUnicode)
Result = CreateProcessWithLogonW(wUser, wDomain, wPassword, _
LOGON_WITH_PROFILE, 0&, wCommandLine, _
CREATE_DEFAULT_ERROR_MODE, 0&, wCurrentDir, si, pi)
If Result <> 0 Then
CloseHandle pi.hThread
CloseHandle pi.hProcess
W2KRunAsUser = 0
Unload frmUserPassword
End
Else
MsgBox "Der Benutzername oder das Kennwort sind nicht _
korrekt." & vbCrLf & "Bitte versuchen sie es erneut!", _
vbCritical + vbOKOnly, "Falsche Benutzerinformationen"
frmUserPassword.txtUser.SetFocus
End If
End Function
Public Function RunAsUser(ByVal UserName As String, _
ByVal Password As String, ByVal DomainName As String, _
ByVal CommandLine As String, _
ByVal CurrentDirectory As String) As Long
Dim w2kOrAbove As Boolean
Dim osinfo As OSVERSIONINFO
Dim Result As Long
Dim uErrorMode As Long
osinfo.dwOSVersionInfoSize = Len(osinfo)
osinfo.szCSDVersion = Space$(128)
GetVersionExA osinfo
w2kOrAbove = (osinfo.dwPlatformId = VER_PLATFORM_WIN32_NT And _
osinfo.dwMajorVersion >= 5)
If (w2kOrAbove) Then
Result = W2KRunAsUser(UserName, Password, DomainName, _
CommandLine, CurrentDirectory)
Else
Result = NT4RunAsUser(UserName, Password, DomainName, _
CommandLine, CurrentDirectory)
End If
RunAsUser = Result
End Function
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