ADFSToolkit

1.0.0.0

Private/Verify-ADFSTkEventLogUsage.ps1

                                function Verify-ADFSTkEventLogUsage 

{

    # We ingest the eventLogging settings from the config file and set things up to accept eventlog traffic 

    $EventLogEnabled=0

    try {

        if ( $Settings.configuration.Logging -ne $null -and $Settings.configuration.Logging.HasAttribute('useEventLog') -and $Settings.configuration.Logging.useEventLog.ToLower() -eq 'true' )

        {

            $MyLogName=$Settings.configuration.logging.LogName

            $MySource =$Settings.configuration.logging.Source

                # We know we should log to the event log by the time we are here.

                # Both LogName and MySource need to be non empty

                if ( [System.Diagnostics.EventLog]::Exists('$MyLogName') -and [System.Diagnostics.EventLog]::SourceExists('$MySource') )

                    {

                        # This is good, both log and source exist, and logging is activatated

                    Write-EventLog -LogName $MyLogName -Source $MySource -EventId 1 -Message "EventLog Being Used on this run"

                    $EventLogEnabled=1

                    }else 

                    {

                        # eventlog does not exist yet, create when sufficient info is provided

                        if ($MyLogName -and $MySource )

                        {

                            #both the logName and Source need to exist before we'll create them.

                            #First, we delete the eventlog source so we can assign it to the right LogName destination

                            Remove-EventLog -Source $MySource -ErrorAction SilentlyContinue

                            # Second, we now issue the appropriate Association to the LogName

                            # If the log does not exist, New-EventLog creates the log and uses this value 

                            # for the Log and LogDisplayName properties of the new event log. 

                            # If the log exists, New-EventLog registers a new source for the event log.

                            # https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.management/new-eventlog?view=powershell-5.1 

                            New-EventLog -LogName $MyLogName -Source $MySource

                            Limit-EventLog -OverflowAction OverWriteAsNeeded -LogName $MyLogName

                            Write-EventLog -LogName $MyLogName -Source $MySource -EventId 1 -Message "ADFSToolkit EventLog Created"

                            $EventLogEnabled=1

                        }else {

                            Write-Error "EventLog creation failure: config has no LogName or Source"

                            $EventLogEnabled=0

                            }

                    } # end eventlog creation step

         }

            else {

                     # EventLogging is not used, we signal false  

                    $EventLogEnabled=0

                 }        

    }

        Catch

        {

            Throw $_

        }

 # pass the true/false for eventlog to invoker

                $EventLogEnabled

}

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