问题
My questions are :
1- Im trying to write a script for monitoring RDS grace period which expire in 10 days.
it does not work for Powershell.
wmic /namespace:\\root\CIMV2\TerminalServices PATH Win32_TerminalServiceSetting WHERE (__CLASS !="") CALL GetGracePeriodDays
Error :
__CLASS : The term '__CLASS' is not recognized as the name of a cmdlet
2- I am trying to take an ownership and give admins the full rights. But I am getting like below.
Error :
You cannot call a method on a null-valued expression. At line:3 char:1
+ $acl = $key.GetAccessControl()
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [], RuntimeException
+ FullyQualifiedErrorId : InvokeMethodOnNull You cannot call a method on a null-valued expression. At line:5 char:1
+ $acl.SetAccessRule($rule)
+ ~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [], RuntimeException
+ FullyQualifiedErrorId : InvokeMethodOnNull You cannot call a method on a null-valued expression. At line:6 char:1
+ $key.SetAccessControl($acl)
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [], RuntimeException
+ FullyQualifiedErrorId : InvokeMethodOnNull Remove-ItemProperty : Requested registry access is not allowed. At line:14 char:1
+ Remove-ItemProperty -Path $keyPath -Name *L$RTMTIMEBOMB*
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : PermissionDenied: (HKEY_LOCAL_MACH...RCM\GracePeriod:String) [Remove-ItemProperty], SecurityException
+ FullyQualifiedErrorId : System.Security.SecurityException,Microsoft.PowerShell.Commands.RemoveItemPropertyCommand
Script :
try {
$RemainingDays=(Invoke-WmiMethod -PATH (gwmi -namespace root\cimv2\terminalservices -class win32_terminalservicesetting).__PATH -name GetGracePeriodDays).daysleft
if(($RemainingDays) -and $RemainingDays -le 10){
$regpath = "HKLM:\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\GracePeriod"
$key = [Microsoft.Win32.Registry]::LocalMachine.OpenSubKey($regpath,[Microsoft.Win32.RegistryKeyPermissionCheck]::ReadWriteSubTree,[System.Security.AccessControl.RegistryRights]::ChangePermissions)
$acl = $key.GetAccessControl()
$rule = New-Object System.Security.AccessControl.RegistryAccessRule ("SERVERNAME\Administrators","FullControl","Allow")
$acl.SetAccessRule($rule)
$key.SetAccessControl($acl)
# The target registry key's full path.
$keyPath = 'HKLM:\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\GracePeriod'
# Pass the value name pattern to Remove-ItemProperty's -Name parameter.
# Remove `-WhatIf` if the preview suggests that the operation works as intended.
Remove-ItemProperty -Path $keyPath -Name *L$RTMTIMEBOMB*
Restart-Computer -Force
}
}
catch [System.Management.Automation.RuntimeException] {
$Exception = $_
}
LAST UPDATE :
try {
$RemainingDays=(Invoke-WmiMethod -PATH (gwmi -namespace root\cimv2\terminalservices -class win32_terminalservicesetting).__PATH -name GetGracePeriodDays).daysleft
if(($RemainingDays) -and $RemainingDays -le 10){
function enable-privilege {
param(
## The privilege to adjust. This set is taken from
## http://msdn.microsoft.com/en-us/library/bb530716(VS.85).aspx
[ValidateSet(
"SeAssignPrimaryTokenPrivilege", "SeAuditPrivilege", "SeBackupPrivilege",
"SeChangeNotifyPrivilege", "SeCreateGlobalPrivilege", "SeCreatePagefilePrivilege",
"SeCreatePermanentPrivilege", "SeCreateSymbolicLinkPrivilege", "SeCreateTokenPrivilege",
"SeDebugPrivilege", "SeEnableDelegationPrivilege", "SeImpersonatePrivilege", "SeIncreaseBasePriorityPrivilege",
"SeIncreaseQuotaPrivilege", "SeIncreaseWorkingSetPrivilege", "SeLoadDriverPrivilege",
"SeLockMemoryPrivilege", "SeMachineAccountPrivilege", "SeManageVolumePrivilege",
"SeProfileSingleProcessPrivilege", "SeRelabelPrivilege", "SeRemoteShutdownPrivilege",
"SeRestorePrivilege", "SeSecurityPrivilege", "SeShutdownPrivilege", "SeSyncAgentPrivilege",
"SeSystemEnvironmentPrivilege", "SeSystemProfilePrivilege", "SeSystemtimePrivilege",
"SeTakeOwnershipPrivilege", "SeTcbPrivilege", "SeTimeZonePrivilege", "SeTrustedCredManAccessPrivilege",
"SeUndockPrivilege", "SeUnsolicitedInputPrivilege")]
$Privilege,
## The process on which to adjust the privilege. Defaults to the current process.
$ProcessId = $pid,
## Switch to disable the privilege, rather than enable it.
[Switch] $Disable
)
## Taken from P/Invoke.NET with minor adjustments.
$definition = @'
using System;
using System.Runtime.InteropServices;
public class AdjPriv
{
[DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]
internal static extern bool AdjustTokenPrivileges(IntPtr htok, bool disall,
ref TokPriv1Luid newst, int len, IntPtr prev, IntPtr relen);
[DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]
internal static extern bool OpenProcessToken(IntPtr h, int acc, ref IntPtr phtok);
[DllImport("advapi32.dll", SetLastError = true)]
internal static extern bool LookupPrivilegeValue(string host, string name, ref long pluid);
[StructLayout(LayoutKind.Sequential, Pack = 1)]
internal struct TokPriv1Luid
{
public int Count;
public long Luid;
public int Attr;
}
internal const int SE_PRIVILEGE_ENABLED = 0x00000002;
internal const int SE_PRIVILEGE_DISABLED = 0x00000000;
internal const int TOKEN_QUERY = 0x00000008;
internal const int TOKEN_ADJUST_PRIVILEGES = 0x00000020;
public static bool EnablePrivilege(long processHandle, string privilege, bool disable)
{
bool retVal;
TokPriv1Luid tp;
IntPtr hproc = new IntPtr(processHandle);
IntPtr htok = IntPtr.Zero;
retVal = OpenProcessToken(hproc, TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref htok);
tp.Count = 1;
tp.Luid = 0;
if(disable)
{
tp.Attr = SE_PRIVILEGE_DISABLED;
}
else
{
tp.Attr = SE_PRIVILEGE_ENABLED;
}
retVal = LookupPrivilegeValue(null, privilege, ref tp.Luid);
retVal = AdjustTokenPrivileges(htok, false, ref tp, 0, IntPtr.Zero, IntPtr.Zero);
return retVal;
}
}
'@
$processHandle = (Get-Process -id $ProcessId).Handle
$type = Add-Type $definition -PassThru
$type[0]::EnablePrivilege($processHandle, $Privilege, $Disable)
}
enable-privilege SeTakeOwnershipPrivilege
$key = [Microsoft.Win32.Registry]::LocalMachine.OpenSubKey("SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\GracePeriod",[Microsoft.Win32.RegistryKeyPermissionCheck]::ReadWriteSubTree,[System.Security.AccessControl.RegistryRights]::takeownership)
# You must get a blank acl for the key b/c you do not currently have access
$acl = $key.GetAccessControl([System.Security.AccessControl.AccessControlSections]::None)
$me = [System.Security.Principal.NTAccount]"Administrators"
$acl.SetOwner($me)
$key.SetAccessControl($acl)
# After you have set owner you need to get the acl with the perms so you can modify it.
$acl = $key.GetAccessControl()
$rule = New-Object System.Security.AccessControl.RegistryAccessRule ("Administrators","FullControl","Allow")
$acl.SetAccessRule($rule)
$key.SetAccessControl($acl)
$key.Close()
# The target registry key's full path.
$keyPath = 'HKLM:\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\GracePeriod'
# Pass the value name pattern to Remove-ItemProperty's -Name parameter.
# Remove `-WhatIf` if the preview suggests that the operation works as intended.
Remove-ItemProperty -Path $keyPath -Name *L$RTMTIMEBOMB*
Restart-Computer -Force
}
}
catch [System.Management.Automation.RuntimeException] {
$Exception = $_
}
回答1:
Use Get-WmiObject to perform WMI object retrieval in Powershell. In your case this would be something like:
$ts = Get-WmiObject -Class Win32_TerminalServiceSetting -Namespace "root\CIMV2\TerminalServices"
$RemainingDays = $ts.GetGracePeriodDays()
<rest of your script here>
来源：https://stackoverflow.com/questions/62358754/how-to-grace-period-reset-with-powershell