Check to see if required rollup has been installed

check-rollup.ps1

<#
check-rollup.ps1
Author: kking124 (https://github.com/kking124)
Version: 1.0.3
Copyright 2017 kking124
LicenseL MIT (https://opensource.org/licenses/MIT)
#>
function Check-Rollup {
    param ([Parameter(Mandatory=$true)][string] $Id, [switch] $Is32, [switch] $V2) 
    <# 
    .SYNOPSIS
        Tries to check to see if a Windows Update Rollup has been applied - requires interwebs and admin privs
    .DESCRIPTION
        TBD
    .PARAMETER Id
        Required; Specifies the KB to search for
    .PARAMETER Is32
        Optional; Detect 32 bit patch dates instead of 64 bit patch dates
    .PARAMETER V2
        Optional; Force using Powershell V2 compatible commands
    .Example
        C:\PS> Check-Rollup -Id KB3201845
        Checks to see if the KB3201845 is installed on the machine
        
        On Windows 10 this MAY return True
        On all other systems this WILL return False
    .Notes
        Currently does not work with Powershell V2
    #>
    [System.DateTime] $rollupDate = New-Object System.DateTime
    [System.DateTime] $currentRollupDate = New-Object System.DateTime

    function get-html{
        param([string] $uri)
        #TODO: add v2 compatability
        return Invoke-WebRequest $uri
    }

    if(!([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator")) {
        throw (new-object System.Management.Automation.PSSecurityException);
    }
    if(!$PSBoundParameters.ContainsKey('V2') -or -not $V2) {
        $V2 = $PSVersionTable.PSVersion.Version -lt 4
    }
    
    $hotfix = Get-Hotfix $Id -ErrorAction SilentlyContinue
    if($hotfix -ne $null) {
        return $true
    }
    
    $webRequest = get-html "https://www.catalog.update.microsoft.com/Search.aspx?q=$Id"
    if($webRequest.ParsedHtml.getElementById('ctl00_catalogBody_noResults') -ne $null) {
        return $false;
    }
    if(-not [System.DateTime]::TryParse($webRequest.ParsedHtml.getElementById('tableContainer').getElementsByTagName('tr')[2].getElementsByTagName('td')[4].InnerHtml, [ref] $rollupDate)) {
        throw(New-Object System.Exception "$Id was not found at https://www.catalog.update.microsoft.com")
        return $false
    }

    #based on: https://p0w3rsh3ll.wordpress.com/2012/10/25/getting-windows-updates-installation-history/
    $Session = New-Object -ComObject Microsoft.Update.Session            
    $Searcher = $Session.CreateUpdateSearcher()            
    $hotfixList = $Searcher.QueryHistory(0,$HistoryCount) | 
        Where-Object { $_.Title -ne $null -and $_.Title.contains('Cumulative Update') -and ($Is32 -or $_.Title.contains('x64')) } | 
        ForEach-Object { 
            New-Object -TypeName PSObject -Property @{
                Title = ($_.Title -split '.*(KB\d{6,7}).*')[1];
                InstalledOn = Get-Date -Date $_.Date;
            } 
        } | Sort-Object -Descending:$true -Property InstalledOn | 
        ForEach-Object { $_.Title }
    
    if($hotfixList.Count -eq 0) {
        throw(New-Object System.Exception "No Windows Update Rollups Installed")
        return $false
    }

    $hotfixList | ForEach-Object {  
        $webRequest = get-html "https://www.catalog.update.microsoft.com/Search.aspx?q=$_"
        [System.DateTime] $date = New-Object System.DateTime
        #quit early for errors
        if($webRequest.ParsedHtml.getElementById('ctl00_catalogBody_noResults') -ne $null) {
            continue;
        }
        if([System.DateTime]::TryParse($webRequest.ParsedHtml.getElementById('tableContainer').getElementsByTagName('tr')[2].getElementsByTagName('td')[4].InnerHtml, [ref] $date)) {
            if([System.DateTime]::Compare($date,$currentRollupDate) -gt 0) {
                $currentRollupDate = $date
            }
        }
    }
    if(([System.DateTime]::Compare( $currentRollupDate, (New-Object System.DateTime) )) -ne 0) {
        throw(New-Object System.Exception "No Windows Update Rollup Update Dates Found")
        return $false
    }

    return [System.DateTime]::Compare($currentRollupDate,$rollupDate) -ge 0
}

check-rollup.tests.ps1

<#
check-rollup.tests.ps1
Author: kking124 (https://github.com/kking124)
Version: 1.0.0
Copyright 2017 kking124
LicenseL MIT (https://opensource.org/licenses/MIT)
#>
function Test-CheckRollup {

    
}

README

License

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.

Changelog

• 1.0.3 (2017-02-24)
  Fixed but at line 91 that caused detected rollups to throw an error instead of success
  Added more description and moved into the function so that Get-Help can use it
  Updated the case on variables to be consistent with PowerShell
  Set up get-html to augment Invoke-WebRequest
  Added more License details
  Made Id mandatory

• 1.0.2 (2017-02-24)
  Added some error checking

• 1.0.1 (2017-02-24)
  Use different Administrator check

• 1.0 (2017-02-24)
  Initial Build

Notes

Requires Powershell 4.0

TODO

• Augment Invoke-WebRequest with System.Net.HttpWebRequest for v2 compatability