monkey365

0.95.1

core/modules/monkeyutils/public/Get-OSVersion.ps1

# Monkey365 - the PowerShell Cloud Security Tool for Azure and Microsoft 365 (copyright 2022) by Juan Garrido
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

function Get-OSVersion {
    <#
        .SYNOPSIS
 
        .DESCRIPTION
 
        .INPUTS
 
        .OUTPUTS
 
        .EXAMPLE
 
        .NOTES
            Author : Juan Garrido
            Twitter : @tr1ana
            File Name : Get-OSVersion
            Version : 1.0
 
        .LINK
            https://github.com/silverhack/monkey365
    #>

    Begin{
        $OS = $null
        #Set constants
        $Windows = [System.Runtime.InteropServices.OSPlatform]::Windows
        $Linux = [System.Runtime.InteropServices.OSPlatform]::Linux
        $OSX = [System.Runtime.InteropServices.OSPlatform]::OSX
        if ($PSVersionTable.PSVersion -ge [version]'6.0') {
            $FREEBSD = [System.Runtime.InteropServices.OSPlatform]::FreeBSD
        }
        else{
            $FREEBSD = $null
        }
    }
    Process{
        #Check for Windows OS
        if([System.Runtime.InteropServices.RuntimeInformation]::IsOSPlatform($Windows)){
            $OS = $Windows
        }#Check for Linux OS
        elseif([System.Runtime.InteropServices.RuntimeInformation]::IsOSPlatform($Linux)){
            $OS = $Linux
        }#Check for OSX
        elseif([System.Runtime.InteropServices.RuntimeInformation]::IsOSPlatform($OSX)){
            $OS = $OSX
        }#Check for FREEBSD
        elseif($null -ne $FREEBSD -and [System.Runtime.InteropServices.RuntimeInformation]::IsOSPlatform($FREEBSD)){
            $OS = $FREEBSD
        }
        else{
            Write-Warning ('Unable to get OS')
            $OS = 'Unknown'
        }
    }
    End{
        return $OS.ToString().ToLower()
    }
}