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Get-OSRoleOnNetwork.ps1
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Get-OSRoleOnNetwork.ps1
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#region License
###############################################################################################
# Copyright 2020 Frank Lesniak
# Permission is hereby granted, free of charge, to any person obtaining a copy of this software
# and associated documentation files (the "Software"), to deal in the Software without
# restriction, including without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
# The above copyright notice and this permission notice shall be included in all copies or
# substantial portions of the Software.
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
# BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
# DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
###############################################################################################
#endregion License
function Get-PSVersion {
if (Test-Path variable:\PSVersionTable) {
$PSVersionTable.PSVersion
} else {
[version]("1.0")
}
}
function Test-Windows {
$versionPS = Get-PSVersion
if ($versionPS.Major -ge 6) {
$IsWindows
} else {
$true
}
}
function Get-OSRoleOnNetwork {
# Returns 1 if the system is a workstation
# Returns 2 if the system is an Active Directory Domain Services (AD DS) Domain Controller
# Returns 3 if the system is a server (but not a Domain Controller)
# NOTE: Returns $null if system is non-Windows or if an error occurred
# TO-DO: Add logic for FreeBSD/Linux systems
$boolWindows = Test-Windows
if ($boolWindows) {
$versionPS = Get-PSVersion
if ($versionPS.Major -ge 3) {
$arrCIMInstanceOS = @(Get-CimInstance -Query "Select ProductType from Win32_OperatingSystem")
if ($arrCIMInstanceOS.Count -eq 0) {
Write-Error "No instances of Win32_OperatingSystem found!"
$null
}
if ($arrCIMInstanceOS.Count -gt 1) {
Write-Warning "More than one instance of Win32_OperatingSystem returned. Will only use first instance."
}
if ($arrCIMInstanceOS.Count -ge 1) {
($arrCIMInstanceOS[0]).ProductType
}
} else {
$arrManagementObjectOS = @(Get-WmiObject -Query "Select Version from Win32_OperatingSystem")
if ($arrManagementObjectOS.Count -eq 0) {
Write-Error "No instances of Win32_OperatingSystem found!"
$null
}
if ($arrManagementObjectOS.Count -gt 1) {
Write-Warning "More than one instance of Win32_OperatingSystem returned. Will only use first instance."
}
if ($arrManagementObjectOS.Count -ge 1) {
($arrManagementObjectOS[0]).ProductType
}
}
} else {
$null
}
}