Type a page name and press Enter. You'll jump to the page if it exists, or you can create it if it doesn't.
To create a page in a module other than advapi32, prefix the name with the module name and a period.
<DllImport("advapi32.dll", SetLastError:=True)> _
Private Function OpenProcessToken( _
ByVal ProcessHandle As IntPtr, _
ByVal DesiredAccess As Integer, _
ByRef TokenHandle As IntPtr _
) As Boolean
End Function
(alternate/older style)
Declare Function OpenProcessToken Lib "advapi32.dll" ( _
ProcessHandle As IntPtr, _
DesiredAccess As Integer, _
ByRef TokenHandle As IntPtr _
) As Boolean
Notes:
The access token handle that is returned by TokenHandle should be closed using CloseHandle (kernel32) when you are finished using it.
Tips & Tricks:
//Use these for DesiredAccess
public const UInt32 STANDARD_RIGHTS_REQUIRED = 0x000F0000;
public const UInt32 STANDARD_RIGHTS_READ = 0x00020000;
public const UInt32 TOKEN_ASSIGN_PRIMARY = 0x0001;
public const UInt32 TOKEN_DUPLICATE = 0x0002;
public const UInt32 TOKEN_IMPERSONATE = 0x0004;
public const UInt32 TOKEN_QUERY = 0x0008;
public const UInt32 TOKEN_QUERY_SOURCE = 0x0010;
public const UInt32 TOKEN_ADJUST_PRIVILEGES = 0x0020;
public const UInt32 TOKEN_ADJUST_GROUPS = 0x0040;
public const UInt32 TOKEN_ADJUST_DEFAULT = 0x0080;
public const UInt32 TOKEN_ADJUST_SESSIONID = 0x0100;
public const UInt32 TOKEN_READ = (STANDARD_RIGHTS_READ | TOKEN_QUERY);
public const UInt32 TOKEN_ALL_ACCESS = (STANDARD_RIGHTS_REQUIRED | TOKEN_ASSIGN_PRIMARY |
TOKEN_DUPLICATE | TOKEN_IMPERSONATE | TOKEN_QUERY | TOKEN_QUERY_SOURCE |
TOKEN_ADJUST_PRIVILEGES | TOKEN_ADJUST_GROUPS | TOKEN_ADJUST_DEFAULT |
TOKEN_ADJUST_SESSIONID);
Source: Link to ''http://groups.google.com/group/microsoft.public.dotnet.general/browse_thread/thread/5742d50ec2e9f798/c702b8d7771f9016lnk=st&q=OpenProcessToken+0x00020000&rnum=1&hl=en#c702b8d7771f9016''
OR instead of using the above code for DesiredAccess, simply use the System.Security.Principal.TokenAccessLevels enumeration!!! - Trevor Sullivan 4/19/2010
VB Code:
Private Const READ_CONTROL As Integer = &H20000
Private Const STANDARD_RIGHTS_REQUIRED As Integer = &HF0000
Private Const STANDARD_RIGHTS_READ As Integer = READ_CONTROL
Private Const STANDARD_RIGHTS_WRITE As Integer = READ_CONTROL
Private Const STANDARD_RIGHTS_EXECUTE As Integer = READ_CONTROL
Private Const STANDARD_RIGHTS_ALL As Integer = &H1F0000
Private Const SPECIFIC_RIGHTS_ALL As Integer = &HFFFF
Private Const TOKEN_ASSIGN_PRIMARY As Integer = &H1
Private Const TOKEN_DUPLICATE As Integer = &H2
Private Const TOKEN_IMPERSONATE As Integer = &H4
Private Const TOKEN_QUERY As Integer = &H8
Private Const TOKEN_QUERY_SOURCE As Integer = &H10
Private Const TOKEN_ADJUST_PRIVILEGES As Integer = &H20
Private Const TOKEN_ADJUST_GROUPS As Integer = &H40
Private Const TOKEN_ADJUST_DEFAULT As Integer = &H80
Private Const TOKEN_ADJUST_SESSIONID As Integer = &H100
public static byte[] GetSIDByteArr(IntPtr processHandle)
{
int MAX_INTPTR_BYTE_ARR_SIZE = 512;
IntPtr tokenHandle;
byte[] sidBytes;
// Get the Process Token
if (!OpenProcessToken(processHandle, TOKEN_READ, out tokenHandle))
throw new ApplicationException("Could not get process token. Win32 Error Code: " + Marshal.GetLastWin32Error());
uint tokenInfoLength = 0;
bool result;
result = GetTokenInformation(tokenHandle, TOKEN_INFORMATION_CLASS.TokenUser, IntPtr.Zero, tokenInfoLength, out tokenInfoLength); // get the token info length
IntPtr tokenInfo = Marshal.AllocHGlobal((int)tokenInfoLength);
result = GetTokenInformation(tokenHandle, TOKEN_INFORMATION_CLASS.TokenUser, tokenInfo, tokenInfoLength, out tokenInfoLength); // get the token info
// Get the User SID
if (result)
{
TOKEN_USER tokenUser = (TOKEN_USER)Marshal.PtrToStructure(tokenInfo, typeof(TOKEN_USER));
sidBytes = new byte[MAX_INTPTR_BYTE_ARR_SIZE]; // Since I don't yet know how to be more precise w/ the size of the byte arr, it is being set to 512
Marshal.Copy(tokenUser.User.Sid, sidBytes, 0, MAX_INTPTR_BYTE_ARR_SIZE); // get a byte[] representation of the SID
}
else throw new ApplicationException("Could not get process token. Win32 Error Code: " + Marshal.GetLastWin32Error());
helpful tips or sample code to share for using this API in managed code?
corrections to the existing content?
variations of the signature you want to share?
additional languages you want to include?
Select "Edit This Page" on the right hand toolbar and edit it! Or add new pages containing supporting types needed for this API (structures, delegates, and more).