As bad as it gets

badFunction.ps1

 #----------------------------------------------------------------------------# 
 #                                 Parameters                                 # 
 #----------------------------------------------------------------------------# 

# Path to a file with server names
$servers = 'DC', 'AdminHost'

# Whether errors should be ignored
$ignoreErrors = $true

# Where to write the results to
$outFile = '.\servers-available.txt'

 #----------------------------------------------------------------------------# 
 #                       Don't edit anything below here                       # 
 #----------------------------------------------------------------------------# 

function get-loggedonuser ($computername) {

    #mjolinor 3/17/10
    
    $regexa = '.+Domain="(.+)",Name="(.+)"$'
    $regexd = '.+LogonId="(\d+)"$'
    
    $logontype = @{
    "0"="Local System"
    "2"="Interactive" #(Local logon)
    "3"="Network" # (Remote logon)
    "4"="Batch" # (Scheduled task)
    "5"="Service" # (Service account logon)
    "7"="Unlock" #(Screen saver)
    "8"="NetworkCleartext" # (Cleartext network logon)
    "9"="NewCredentials" #(RunAs using alternate credentials)
    "10"="RemoteInteractive" #(RDP\TS\RemoteAssistance)
    "11"="CachedInteractive" #(Local w\cached credentials)
    }
    
    $logon_sessions = @(gwmi win32_logonsession -ComputerName $computername)
    $logon_users = @(gwmi win32_loggedonuser -ComputerName $computername)
    
    $session_user = @{}
    
    $logon_users |% {
    $_.antecedent -match $regexa > $nul
    $username = $matches[1] + "\" + $matches[2]
    $_.dependent -match $regexd > $nul
    $session = $matches[1]
    $session_user[$session] += $username
    }
    
    
    $logon_sessions |%{
    $starttime = [management.managementdatetimeconverter]::todatetime($_.starttime)
    
    $loggedonuser = New-Object -TypeName psobject
    $loggedonuser | Add-Member -MemberType NoteProperty -Name "Session" -Value $_.logonid
    $loggedonuser | Add-Member -MemberType NoteProperty -Name "User" -Value $session_user[$_.logonid]
    $loggedonuser | Add-Member -MemberType NoteProperty -Name "Type" -Value $logontype[$_.logontype.tostring()]
    $loggedonuser | Add-Member -MemberType NoteProperty -Name "Auth" -Value $_.authenticationpackage
    $loggedonuser | Add-Member -MemberType NoteProperty -Name "StartTime" -Value $starttime
    
    $loggedonuser
    }
}

function Get-UserProcesses {
    param ($username)
    $servers | %{
        $proc = Get-CimInstance Win32_Process -ComputerName $ComputerName
        $procs = $proc | % { 
            $ownerData = Invoke-CimMethod -MethodName GetOwner -InputObject $_
            [PSCustomObject]@{
                ProcessName = $_.ProcessName
                ProcessId = $_.ProcessId
                Handles = $_.Handles
                VM = $_.VM
                WS = $_.WS
                Owner = "{0}\{1}" -f $ownerData.Domain, $ownerData.User
                ComputerName = $ownerData.PSComputerName
            }
        }
        $procs | ? Owner -eq $username
    }
}

function Write-Result {
    param ($message)

    $message | ac $outFile
}

foreach ($server in $servers)
{
    Write-Result "[$server] Starting"
    $users = get-loggedonuser -computername $server
    $users | %{
        Write-Result "  User logged on: $($_.User) ($($_.Type) | $($_.Session) | $($_.StartTime))"
    }
    Write-Result " "
    $users | %{
        Write-Result "  Process for user: $($_.User)"
        $procs = Get-UserProcesses -username $_.User

        foreach ($proc in $procs)
        {
            Write-Result "    $($proc.ProcessId) | $($proc.ProcessName) - $($proc.VM) / $($proc.WS) / $($proc.Handles)"
        }
    }
}