Module/Rule.ProcessMitigation/Convert/ProcessMitigationRule.Convert.psm1
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# Copyright (c) Microsoft Corporation. All rights reserved. # Licensed under the MIT License. using module .\..\..\Common\Common.psm1 using module .\..\ProcessMitigationRule.psm1 $exclude = @($MyInvocation.MyCommand.Name,'Template.*.txt') $supportFileList = Get-ChildItem -Path $PSScriptRoot -Exclude $exclude foreach ($supportFile in $supportFileList) { Write-Verbose "Loading $($supportFile.FullName)" . $supportFile.FullName } # Header <# .SYNOPSIS Convert the contents of an xccdf check-content element into a process mitigation object .DESCRIPTION The ProcessMitigationRule class is used to extract the process mitigation settings from the check-content of the xccdf. Once a STIG rule is identified a process Mitigation rule, it is passed to the ProcessMitigationRule class for parsing and validation. #> class ProcessMitigationRuleConvert : ProcessMitigationRule { <# .SYNOPSIS Empty constructor for SplitFactory #> ProcessMitigationRuleConvert () { } <# .SYNOPSIS Converts a xccdf stig rule element into a Process Mitigation Rule .PARAMETER XccdfRule The STIG rule to convert #> ProcessMitigationRuleConvert ([xml.xmlelement] $XccdfRule) : base ($XccdfRule, $true) { $this.SetMitigationTarget() $this.SetMitigationToEnable() if ($this.conversionstatus -eq 'pass') { $this.SetDuplicateRule() } $this.SetDscResource() } #region Methods <# .SYNOPSIS Extracts the mitigation target name from the check-content and sets the value .DESCRIPTION Gets the mitigation target name from the xccdf content and sets the value. If the mitigation target name that is returned is not valid, the parser status is set to fail #> [void] SetMitigationTarget () { $thisMitigationTarget = Get-MitigationTargetName -CheckContent $this.SplitCheckContent if (-not $this.SetStatus($thisMitigationTarget)) { $this.set_MitigationTarget($thisMitigationTarget) } } <# .SYNOPSIS Enables the mitigation target .DESCRIPTION Sets the mitigation target to enabled. If the mitigation target is not set to enabled, it is set to disabled #> [void] SetMitigationToEnable () { $thisMitigation = Get-MitigationPolicyToEnable -CheckContent $this.SplitCheckContent if (-not $this.SetStatus($thisMitigation)) { $this.set_Enable($thisMitigation) } } <# .SYNOPSIS Tests if a rule contains multiple checks .DESCRIPTION Search the rule text to determine if multiple mitigationsare defined .PARAMETER MitigationTarget The object the mitigation applies to #> <#{TODO}#> # HasMultipleRules is implemented inconsistently. [bool] HasMultipleRules () { return (Test-MultipleProcessMitigationRule -MitigationTarget $this.MitigationTarget) } <# .SYNOPSIS Splits a rule into multiple checks .DESCRIPTION Once a rule has been found to have multiple checks, the rule needs to be split. This method splits a {0} into multiple rules. Each split rule id is appended with a dot and letter to keep reporting per the ID consistent. An example would be is V-1000 contained 2 checks, then SplitMultipleRules would return 2 objects with rule ids V-1000.a and V-1000.b .PARAMETER MitigationTarget The object the mitigation applies to #> [string[]] SplitMultipleRules () { return (Split-ProcessMitigationRule -MitigationTarget $this.MitigationTarget) } hidden [void] SetDscResource () { if ($null -eq $this.DuplicateOf) { $this.DscResource = 'ProcessMitigation' } else { $this.DscResource = 'None' } } static [bool] Match ([string] $CheckContent) { if ($CheckContent -Match "Get-ProcessMitigation") { return $true } return $false } #endregion } |