<#
  Get-UsersGroupMemberShips.ps1
  How Can I Generate a List of All Groups of Which a User Is a Member?
  - http://blogs.technet.com/b/heyscriptingguy/archive/2009/10/08/hey-scripting-guy-october-8-2009.aspx

#>

#-------------------------------------------------------------

Function New-Underline($Text) {
    "`n$Text`n$(`"-`" * $Text.length)"
} #end New-UnderLine

Function Test-DotNetFrameWork35 {
    Test-path -path 'HKLM:\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5'
} #end Test-DotNetFrameWork35

Function Get-UserPrincipal($cName, $cContainer, $userName) {
    $dsam = "System.DirectoryServices.AccountManagement"
    $rtn = [reflection.assembly]::LoadWithPartialName($dsam)
    $cType = "domain" #context type
    $iType = "SamAccountName"
    $dsamUserPrincipal = "$dsam.userPrincipal" -as [type]
    $principalContext = new-object "$dsam.PrincipalContext"($cType, $cName, $cContainer)
    $dsamUserPrincipal::FindByIdentity($principalContext, $iType, $userName)
} # end Get-UserPrincipal


If (-not(Test-DotNetFrameWork35)) { "Requires .NET Framework 3.5" ; exit }

#-------------------------------------------------------------

[string]$userName = "admintbird"
[string]$cName = "fmg.local"
[string]$cContainer = "DC=FMG,DC=local"

#-------------------------------------------------------------

$userPrincipal = Get-UserPrincipal -userName $userName -cName $cName -cContainer $cContainer

New-UnderLine -Text "Direct Group MemberShip:"
$userPrincipal.getGroups() | ForEach-Object { $_.name }

New-UnderLine -Text "Indirect Group Membership:"
$userPrincipal.GetAuthorizationGroups()  | ForEach-Object { $_.name }