Get AD Computers using legacy ADSI Interface (Useful for Windows 2003 and areas where AD Web Services is not available for Get-ADComputer)

Get-ADSIEnabledComputer.ps1

<#
.EXAMPLE
Get Enabled Computers from a domain in another environment

Get-ADSIEnabledComputer -connectionstring 'LDAP://myserver1.contoso.com/DC=contoso,dc=com' -username "admin" -password "Password@1307"

#>

#TODO: Convert Username/Password to PSCredential field for security
param (
    [string]$connectionstring,
    [string]$username,
    [string]$password
)
$adsi = New-Object System.DirectoryServices.DirectoryEntry($connectionstring,$username,$password)
$searcher = [adsisearcher]($adsi)
$searcher.filter = "(&(objectCategory=computer)(!userAccountControl:1.2.840.113556.1.4.803:=2))"

#Convert the resultset into a PSCustomObject by iterating through the properties
$searcher.findall().properties | foreach {
    $entryObject = @{}
    foreach ($key in $_.keys) {

        #Everything comes back as arrays. If there is only one entry, "strip" the array
        if ($_.$key.count -eq 1) {
            $entryObject.$key = $_.$key[0]
        } else {
            $entryObject.$key = $_.$key
        }
    }
    [PSCustomObject]$entryObject
}