#### RemoteInvokeTrendOSCAgentUpdate.ps1: REMOTELY INITIATE AN UPDATE OF A TREND OSC AGENT ####

## COMMENT: The script execute command through PSSession and open a RDP window to allow interactive use of "OSCAgentExe -u" ###

param(
# Target Computer
$Computer = "MyTarget",
# Cred
$Cred = $(Get-Credential -Credential "MyAccount"),
# OSC Agent Folder
$OSCAgentFolder = "C:\Program Files (x86)\Trend Micro\OfficeScan Client\",
# OSC Client Process
$OSCClientProc = "PccNTMon"
)


# OSC Agent Exe
$OSCAgentExe = "$OSCAgentFolder$OSCClientProc`.exe"


# FUNCTIONS
function Set-WindowState {
	
	[CmdletBinding(DefaultParameterSetName = 'InputObject')]
	param(
		[Parameter(Position = 0, Mandatory = $true, ValueFromPipeline = $true)]
		[Object[]] $InputObject,

		[Parameter(Position = 1)]
		[ValidateSet('FORCEMINIMIZE', 'HIDE', 'MAXIMIZE', 'MINIMIZE', 'RESTORE',
					 'SHOW', 'SHOWDEFAULT', 'SHOWMAXIMIZED', 'SHOWMINIMIZED',
					 'SHOWMINNOACTIVE', 'SHOWNA', 'SHOWNOACTIVATE', 'SHOWNORMAL')]
		[string] $State = 'SHOW'
	)

	Begin {
		$WindowStates = @{
			'FORCEMINIMIZE'		= 11
			'HIDE'				= 0
			'MAXIMIZE'			= 3
			'MINIMIZE'			= 6
			'RESTORE'			= 9
			'SHOW'				= 5
			'SHOWDEFAULT'		= 10
			'SHOWMAXIMIZED'		= 3
			'SHOWMINIMIZED'		= 2
			'SHOWMINNOACTIVE'	= 7
			'SHOWNA'			= 8
			'SHOWNOACTIVATE'	= 4
			'SHOWNORMAL'		= 1
		}

		$Win32ShowWindowAsync = Add-Type -MemberDefinition @'
[DllImport("user32.dll")]
public static extern bool ShowWindowAsync(IntPtr hWnd, int nCmdShow);
'@ -Name "Win32ShowWindowAsync" -Namespace Win32Functions -PassThru

		if (!$global:MainWindowHandles) {
			$global:MainWindowHandles = @{ }
		}
	}

	Process {
		foreach ($process in $InputObject) {
			if ($process.MainWindowHandle -eq 0) {
				if ($global:MainWindowHandles.ContainsKey($process.Id)) {
					$handle = $global:MainWindowHandles[$process.Id]
				} else {
					Write-Error "Main Window handle is '0'"
					continue
				}
			} else {
				$global:handle = $process.MainWindowHandle
			}

			$Win32ShowWindowAsync::ShowWindowAsync($handle, $WindowStates[$State]) | Out-Null
			Write-Verbose ("Set Window State '{1} on '{0}'" -f $handle, $State)
		}
	}
}




# FOR EACH COMPUTER
foreach ($Comp in $Computer) {


# Create PSSession
try
{
New-PSSession -ComputerName $Comp -Credential $Cred -Name "PSSession_$Comp" -ErrorAction Stop
}
catch
{
write-host -F Red "Error during New-PSSession `n $($Error[0].Exception)"
exit 1 
}


# Get PSsession
$RemoteSession = Get-PSSession -Name "PSSession_$Comp"


# Open RDP Session (needed because the invoke update is interactive)
cmdkey /generic:TERMSRV/$Comp /user:($Cred.UserName) /pass:($Cred.GetNetworkCredential().Password)

mstsc /v:$Comp /w:50 /h:50

Write-Host "Wait for 10 sec..."
Start-Sleep -Seconds 10


# Get the RDP process Id to kill it at the end
$ProcId = (Get-Process mstsc | Where-Object {$_.MainWindowTitle -like "*$Comp*"}).Id


# Minimize RDP Window
(Get-Process mstsc | Where-Object {$_.MainWindowTitle -like "*$Comp*"}) | foreach {Set-WindowState $_ HIDE}


Write-Host "Wait for 10 sec..."
Start-Sleep -Seconds 10



# Invoke Update
write-host "Invoking update..."
Invoke-Command -Session $RemoteSession -ScriptBlock {Start-Process -FilePath $Using:OSCAgentExe -ArgumentList "-u"} 


        # Wait while update (see for update of ofcscan.ini file)
        do {
            Write-Host "Wait while update..."
           }

        until

           (
            (Invoke-Command -Session $RemoteSession -ScriptBlock {Get-ChildItem -Path "$Using:OSCAgentFolder`ofcscan.ini" | Where-Object {$_.LastWriteTime -gt $(get-date).AddMinutes(-15)}})
           )


Write-Host "Wait for 10 sec..."
Start-Sleep -Seconds 10



# Close RDP Session
write-host "Logoff RDP Session on $Comp..."
Invoke-Command -Session $RemoteSession -ScriptBlock {`
    $CredUser = $($Using:Cred.UserName)
    $sessions = quser | Where-Object {$_ -match $CredUser} ; 
    $sessionIds = ($sessions -split ' +')[2] ; 
    Write-Host "Found $(@($sessionIds).Count) user login(s) on computer.";
    $sessionIds | ForEach-Object {Write-Host "Logging off session id [$($_)]..." ; logoff $_}
     
     }


# Close RDP Session Disconnect Window by killing process
Get-Process -Id $ProcId | stop-process


}

# Remove Pssession
Get-PSSession | Remove-PSSession