HyperV2012UpdatesCheck.ps1

# Remake of Christian Edwards script to make it more flexible
# http://blogs.technet.com/b/cedward/archive/2013/05/31/validating-hyper-v-2012-and-failover-clustering-hotfixes-with-powershell-part-2.aspx
#
# Niklas Akerlund 2013-06-28

<#
.SYNOPSIS
Powershell script intended for checking Windows Server hosts for hotfixes and updates published for Hyper-V and Failover Cluster rule in Windows Server 2012.
.DESCRIPTION
Script use xml files UpdatesListCluster.xml and UpdatesListHyperV.xml that are stored in folder with script. 
.PARAMETER ComputerName
The name of the Computer you want to run the command against.
.PARAMETER ClusterName 
Optional - The Cluster which contains the nodes you'd like to run the report against.
.PARAMETER Download
Optional - Download all hotfixes which are not currently installed.
.PARAMETER DownloadPath
Optional - Download path. Must be entered when -Download is used.


.EXAMPLE
.\HyperV2012UpdatesCheck.ps1 -ClusterName mycluster -Download -DownloadPath c:\temp\hotfixes
.LINK
https://github.com/it-praktyk/Get-WindowsHotfixes
#>

param
(
    [parameter(ValueFromPipeline=$true,  
                   Position=0)]
    [string]$Hostname,
    [parameter(ValueFromPipeline=$true, 
                   Position=1)]
    $ClusterName,
    [switch]$Download,
    [string]$DownloadPath
)

#Getting current execution path
$scriptpath = $MyInvocation.MyCommand.Path
$dir = Split-Path $scriptpath
$listofHotfixes = @()

#Loading list of updates from XML files

[xml]$SourceFileHyperV = Get-Content $dir\UpdatesListHyperV.xml
[xml]$SourceFileCluster = Get-Content $dir\UpdatesListCluster.xml

$HyperVHotfixes = $SourceFileHyperV.Updates.Update
$ClusterHotfixes = $SourceFileCluster.Updates.update

#Getting installed Hotfixes from all nodes of the Cluster
if ($ClusterName){
    $Nodes = Get-Cluster $ClusterName | Get-ClusterNode | Select -ExpandProperty Name
}else
{
    $Nodes = $Hostname
}
foreach($Node in $Nodes)
{
$Hotfixes = Get-HotFix -ComputerName $Node |select HotfixID,description

foreach($RecomendedHotfix in $HyperVHotfixes)
{
        $witness = 0
        foreach($hotfix in $Hotfixes)
        {
                If($RecomendedHotfix.id -eq $hotfix.HotfixID)
                {
                    $obj = [PSCustomObject]@{
                        HyperVNode = $Node
                        HotfixType = "Hyper-V"
                        RecomendedHotfix = $RecomendedHotfix.Id
                        Status = "Installed"
                        Description = $RecomendedHotfix.Description
                        DownloadURL =  $RecomendedHotfix.DownloadURL
                    } 
                   
                   $listOfHotfixes += $obj
                    $witness = 1
                 }
        }  
        if($witness -eq 0)
        {
            
            $obj = [PSCustomObject]@{
                    HyperVNode = $Node
                    HotfixType = "Hyper-V"
                    RecomendedHotfix = $RecomendedHotfix.Id
                    Status = "Not Installed"
                    Description = $RecomendedHotfix.Description
                    DownloadURL =  $RecomendedHotfix.DownloadURL
            } 
                   
            $listofHotfixes += $obj
 
        }

}

foreach($RecomendedClusterHotfix in $ClusterHotfixes)
{
        $witness = 0
        foreach($hotfix in $Hotfixes)
        {
                If($RecomendedClusterHotfix.id -eq $hotfix.HotfixID)
                {
                    $obj = [PSCustomObject]@{
                        HyperVNode = $Node
                        HotfixType = "Cluster"
                        RecomendedHotfix = $RecomendedClusterHotfix.Id
                        Status = "Installed"
                        Description = $RecomendedClusterHotfix.Description
                        DownloadURL =  $RecomendedClusterHotfix.DownloadURL
                    } 
                   
                   $listOfHotfixes += $obj
   
                   $witness = 1
                 }
        }  
        if($witness -eq 0)
        {
            $obj = [PSCustomObject]@{
                HyperVNode = $Node
                HotfixType = "Cluster"
                RecomendedHotfix = $RecomendedClusterHotfix.Id
                Status = "Not Installed"
                Description = $RecomendedClusterHotfix.Description
                DownloadURL =  $RecomendedClusterHotfix.DownloadURL
            } 
                   
            $listOfHotfixes += $obj
          
        }
}
}
if ($Download){
    foreach($RecomendedHotfix in $HyperVHotfixes){
        if ($RecomendedHotfix.DownloadURL -ne ""){
            Start-BitsTransfer -Source $RecomendedHotfix.DownloadURL -Destination $DownloadPath 
        }
    }
    foreach($RecomendedClusterHotfix in $ClusterHotfixes){
        if ($RecomendedClusterHotfix.DownloadURL -ne ""){
            Start-BitsTransfer -Source $RecomendedClusterHotfix.DownloadURL -Destination $DownloadPath 
        }
    }
}

$listofHotfixes