Show Pending Reboots

Topics: Feature Requests
Feb 13, 2014 at 1:14 PM
I have a PS function that I got from the interwebs that shows if a machine has a pending reboot. Could this functionality be added to the application? Code posted (including Author information) below
Function Get-PendingReboot
{
<#
.SYNOPSIS
    Gets the pending reboot status on a local or remote computer.

.DESCRIPTION
    This function will query the registry on a local or remote computer and determine if the
    system is pending a reboot, from either Microsoft Patching or a Software Installation.
    For Windows 2008+ the function will query the CBS registry key as another factor in determining
    pending reboot state.  "PendingFileRenameOperations" and "Auto Update\RebootRequired" are observed
    as being consistant across Windows Server 2003 & 2008.
    
    CBServicing = Component Based Servicing (Windows 2008)
    WindowsUpdate = Windows Update / Auto Update (Windows 2003 / 2008)
    CCMClientSDK = SCCM 2012 Clients only (DetermineIfRebootPending method) otherwise $null value
    PendFileRename = PendingFileRenameOperations (Windows 2003 / 2008)

.PARAMETER ComputerName
    A single Computer or an array of computer names.  The default is localhost ($env:COMPUTERNAME).

.PARAMETER ErrorLog
    A single path to send error data to a log file.

.EXAMPLE
    PS C:\> Get-PendingReboot -ComputerName (Get-Content C:\ServerList.txt) | Format-Table -AutoSize
    
    Computer CBServicing WindowsUpdate CCMClientSDK PendFileRename PendFileRenVal RebootPending
    -------- ----------- ------------- ------------ -------------- -------------- -------------
    DC01           False         False                       False                        False
    DC02           False         False                       False                        False
    FS01           False         False                       False                        False

    This example will capture the contents of C:\ServerList.txt and query the pending reboot
    information from the systems contained in the file and display the output in a table. The
    null values are by design, since these systems do not have the SCCM 2012 client installed,
    nor was the PendingFileRenameOperations value populated.

.EXAMPLE
    PS C:\> Get-PendingReboot
    
    Computer       : WKS01
    CBServicing    : False
    WindowsUpdate  : True
    CCMClient      : False
    PendFileRename : False
    PendFileRenVal : 
    RebootPending  : True
    
    This example will query the local machine for pending reboot information.
    
.EXAMPLE
    PS C:\> $Servers = Get-Content C:\Servers.txt
    PS C:\> Get-PendingReboot -Computer $Servers | Export-Csv C:\PendingRebootReport.csv -NoTypeInformation
    
    This example will create a report that contains pending reboot information.

.LINK
    Component-Based Servicing:
    http://technet.microsoft.com/en-us/library/cc756291(v=WS.10).aspx
    
    PendingFileRename/Auto Update:
    http://support.microsoft.com/kb/2723674
    http://technet.microsoft.com/en-us/library/cc960241.aspx
    http://blogs.msdn.com/b/hansr/archive/2006/02/17/patchreboot.aspx

    SCCM 2012/CCM_ClientSDK:
    http://msdn.microsoft.com/en-us/library/jj902723.aspx

.NOTES
    Author:  Brian Wilhite
    Email:   bwilhite1@carolina.rr.com
    Date:    08/29/2012
    PSVer:   2.0/3.0
    Updated: 05/30/2013
    UpdNote: Added CCMClient property - Used with SCCM 2012 Clients only
             Added ValueFromPipelineByPropertyName=$true to the ComputerName Parameter
             Removed $Data variable from the PSObject - it is not needed
             Bug with the way CCMClientSDK returned null value if it was false
             Removed unneeded variables
             Added PendFileRenVal - Contents of the PendingFileRenameOperations Reg Entry
#>

[CmdletBinding()]
param(
    [Parameter(Position=0,ValueFromPipeline=$true,ValueFromPipelineByPropertyName=$true)]
    [Alias("CN","Computer")]
    [String[]]$ComputerName="$env:COMPUTERNAME",
    [String]$ErrorLog
    )

Begin
    {
        # Adjusting ErrorActionPreference to stop on all errors, since using [Microsoft.Win32.RegistryKey]
        # does not have a native ErrorAction Parameter, this may need to be changed if used within another
        # function.
        $TempErrAct = $ErrorActionPreference
        $ErrorActionPreference = "Stop"
    }#End Begin Script Block
Process
    {
        Foreach ($Computer in $ComputerName)
            {
                Try
                    {
                        # Setting pending values to false to cut down on the number of else statements
                        $PendFileRename,$Pending,$SCCM = $false,$false,$false
                        
                        # Setting CBSRebootPend to null since not all versions of Windows has this value
                        $CBSRebootPend = $null
                        
                        # Querying WMI for build version
                        $WMI_OS = Get-WmiObject -Class Win32_OperatingSystem -Property BuildNumber, CSName -ComputerName $Computer

                        # Making registry connection to the local/remote computer
                        $RegCon = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey([Microsoft.Win32.RegistryHive]"LocalMachine",$Computer)
                        
                        # If Vista/2008 & Above query the CBS Reg Key
                        If ($WMI_OS.BuildNumber -ge 6001)
                            {
                                $RegSubKeysCBS = $RegCon.OpenSubKey("SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing\").GetSubKeyNames()
                                $CBSRebootPend = $RegSubKeysCBS -contains "RebootPending"
                                    
                            }#End If ($WMI_OS.BuildNumber -ge 6001)
                            
                        # Query WUAU from the registry
                        $RegWUAU = $RegCon.OpenSubKey("SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\")
                        $RegWUAURebootReq = $RegWUAU.GetSubKeyNames()
                        $WUAURebootReq = $RegWUAURebootReq -contains "RebootRequired"
                        
                        # Query PendingFileRenameOperations from the registry
                        $RegSubKeySM = $RegCon.OpenSubKey("SYSTEM\CurrentControlSet\Control\Session Manager\")
                        $RegValuePFRO = $RegSubKeySM.GetValue("PendingFileRenameOperations",$null)
                        
                        # Closing registry connection
                        $RegCon.Close()
                        
                        # If PendingFileRenameOperations has a value set $RegValuePFRO variable to $true
                        If ($RegValuePFRO)
                            {
                                $PendFileRename = $true

                            }#End If ($RegValuePFRO)

                        # Determine SCCM 2012 Client Reboot Pending Status
                        # To avoid nested 'if' statements and unneeded WMI calls to determine if the CCM_ClientUtilities class exist, setting EA = 0
                        $CCMClientSDK = $null
                        $CCMSplat = @{
                            NameSpace='ROOT\ccm\ClientSDK'
                            Class='CCM_ClientUtilities'
                            Name='DetermineIfRebootPending'
                            ComputerName=$Computer
                            ErrorAction='SilentlyContinue'
                            }
                        $CCMClientSDK = Invoke-WmiMethod @CCMSplat
                        If ($CCMClientSDK)
                            {
                                If ($CCMClientSDK.ReturnValue -ne 0)
                                    {
                                        Write-Warning "Error: DetermineIfRebootPending returned error code $($CCMClientSDK.ReturnValue)"
                            
                                    }#End If ($CCMClientSDK -and $CCMClientSDK.ReturnValue -ne 0)

                                If ($CCMClientSDK.IsHardRebootPending -or $CCMClientSDK.RebootPending)
                                    {
                                        $SCCM = $true

                                    }#End If ($CCMClientSDK.IsHardRebootPending -or $CCMClientSDK.RebootPending)

                            }#End If ($CCMClientSDK)
                        Else
                            {
                                $SCCM = $null

                            }                        
                        
                        # If any of the variables are true, set $Pending variable to $true
                        If ($CBSRebootPend -or $WUAURebootReq -or $SCCM -or $PendFileRename)
                            {
                                $Pending = $true

                            }#End If ($CBS -or $WUAU -or $PendFileRename)
                            
                        # Creating Custom PSObject and Select-Object Splat
                        $SelectSplat = @{
                            Property=('Computer','CBServicing','WindowsUpdate','CCMClientSDK','PendFileRename','PendFileRenVal','RebootPending')
                            }
                        New-Object -TypeName PSObject -Property @{
                                Computer=$WMI_OS.CSName
                                CBServicing=$CBSRebootPend
                                WindowsUpdate=$WUAURebootReq
                                CCMClientSDK=$SCCM
                                PendFileRename=$PendFileRename
                                PendFileRenVal=$RegValuePFRO
                                RebootPending=$Pending
                                } | Select-Object @SelectSplat

                    }#End Try

                Catch
                    {
                        Write-Warning "$Computer`: $_"
                        
                        # If $ErrorLog, log the file to a user specified location/path
                        If ($ErrorLog)
                            {
                                Out-File -InputObject "$Computer`,$_" -FilePath $ErrorLog -Append

                            }#End If ($ErrorLog)
                            
                    }#End Catch
                    
            }#End Foreach ($Computer in $ComputerName)
            
    }#End Process
    
End
    {
        # Resetting ErrorActionPref
        $ErrorActionPreference = $TempErrAct
    }#End End
    
}#End Function