DSCResources/DSR_KeyValuePairFile/DSR_KeyValuePairFile.psm1
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# Suppressed as per PSSA Rule Severity guidelines for unit/integration tests: # https://github.com/PowerShell/DscResources/blob/master/PSSARuleSeverities.md [System.Diagnostics.CodeAnalysis.SuppressMessageAttribute('PSUseShouldProcessForStateChangingFunctions', '')] param () Set-StrictMode -Version 'Latest' $modulePath = Join-Path -Path (Split-Path -Path (Split-Path -Path $PSScriptRoot -Parent) -Parent) -ChildPath 'Modules' # Import the Storage Common Modules Import-Module -Name (Join-Path -Path $modulePath ` -ChildPath (Join-Path -Path 'FileContentDsc.Common' ` -ChildPath 'FileContentDsc.Common.psm1')) # Import the Storage Resource Helper Module Import-Module -Name (Join-Path -Path $modulePath ` -ChildPath (Join-Path -Path 'FileContentDsc.ResourceHelper' ` -ChildPath 'FileContentDsc.ResourceHelper.psm1')) # Import Localization Strings $localizedData = Get-LocalizedData ` -ResourceName 'DSR_KeyValuePairFile' ` -ResourcePath (Split-Path -Parent $Script:MyInvocation.MyCommand.Path) <# .SYNOPSIS Retrieves the current state of a key in a key value pair text file. .PARAMETER Path The path to the key value pair text file. .PARAMETER Name The name of the key. #> function Get-TargetResource { [OutputType([Hashtable])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [String] $Path, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [String] $Name ) Assert-ParametersValid @PSBoundParameters $fileContent = Get-Content -Path $Path -Raw Write-Verbose -Message ($localizedData.SearchForKeyMessage -f ` $Path, $Name) # Setup the Regex Options that will be used $regExOptions = [System.Text.RegularExpressions.RegexOptions]::Multiline # Search the key that matches the requested key $results = [regex]::Matches($fileContent, "^[\s]*$Name=([^\n\r]*)", $regExOptions) $ensure = 'Absent' $text = $null if ($results.Count -eq 0) { # No matches found Write-Verbose -Message ($localizedData.KeyNotFoundMessage -f ` $Path, $Name) } else { # One of more key value pairs were found $ensure = 'Present' $textValues = @() foreach ($match in $results) { $textValues += $match.Groups[1].Value } $text = ($textValues -join ',') Write-Verbose -Message ($localizedData.KeyFoundMessage -f ` $Path, $Name, $text) } # if return @{ Path = $Path Name = $Name Ensure = $ensure Type = 'Text' Text = $text IgnoreNameCase = $false IgnoreValueCase = $false } } <# .SYNOPSIS Sets the current state of a key in a key value pair text file. .PARAMETER Path The path to the key value pair text file. .PARAMETER Name The name of the key. .PARAMETER Ensure Specifies the if the key value pair with the specified key should exist in the file. .PARAMETER Type Specifies the value type to use as the replacement string. Defaults to 'Text'. .PARAMETER Text The text to replace the value with in the identified key. Only used when Type is set to 'Text'. .PARAMETER Secret The secret text to replace the value with in the identified key. Only used when Type is set to 'Secret'. .PARAMETER IgnoreNameCase Ignore the case of the name of the key. Defaults to $False. .PARAMETER IgnoreValueCase Ignore the case of any text or secret when determining if it they need to be updated. Defaults to $False. #> function Set-TargetResource { # Should process is called in a helper functions but not directly in Set-TargetResource [Diagnostics.CodeAnalysis.SuppressMessageAttribute('PSShouldProcess', '')] [CmdletBinding(SupportsShouldProcess = $true)] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [String] $Path, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [String] $Name, [Parameter()] [ValidateSet('Present', 'Absent')] [String] $Ensure = 'Present', [Parameter()] [ValidateSet('Text', 'Secret')] [String] $Type = 'Text', [Parameter()] [String] $Text, [Parameter()] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Secret, [Parameter()] [System.Boolean] $IgnoreNameCase = $false, [Parameter()] [System.Boolean] $IgnoreValueCase = $false ) Assert-ParametersValid @PSBoundParameters $fileContent = Get-Content -Path $Path -Raw Write-Verbose -Message ($localizedData.SearchForKeyMessage -f ` $Path, $Name) if ($Type -eq 'Secret') { $Text = $Secret.GetNetworkCredential().Password } # if # Determine the EOL characters used in the file $eolChars = Get-TextEolCharacter -Text $fileContent # Setup the Regex Options that will be used $regExOptions = [System.Text.RegularExpressions.RegexOptions]::Multiline if ($IgnoreNameCase) { $regExOptions += [System.Text.RegularExpressions.RegexOptions]::IgnoreCase } # Search the key that matches the requested key $results = [regex]::Matches($fileContent, "^[\s]*$Name=([^\n\r]*)", $regExOptions) if ($Ensure -eq 'Present') { # The key value pair should exist $keyValuePair = '{0}={1}{2}' -f $Name, $Text, $eolChars if ($results.Count -eq 0) { # The key value pair was not found so add it to the end of the file if (-not $fileContent.EndsWith($eolChars)) { $fileContent += $eolChars } # if $fileContent += $keyValuePair Write-Verbose -Message ($localizedData.KeyAddMessage -f ` $Path, $Name) } else { # The key value pair was found so update it $fileContent = [regex]::Replace($fileContent, "^[\s]*$Name=(.*)($eolChars*)", $keyValuePair, $regExOptions) Write-Verbose -Message ($localizedData.KeyUpdateMessage -f ` $Path, $Name) } # if } else { if ($results.Count -eq 0) { # The Key does not exists and should not so don't do anything return } else { # The Key exists in the file but should not so remove it $fileContent = [regex]::Replace($fileContent, "^[\s]*$Name=(.*)$eolChars", '', $regExOptions) Write-Verbose -Message ($localizedData.KeyRemoveMessage -f ` $Path, $Name) } } # if Set-Content ` -Path $Path ` -Value $fileContent ` -NoNewline ` -Force } <# .SYNOPSIS Tests the current state of a key in a key value pair text file. .PARAMETER Path The path to the key value pair text file. .PARAMETER Name The name of the key. .PARAMETER Ensure Specifies the if the key value pair with the specified key should exist in the file. .PARAMETER Type Specifies the value type to use as the replacement string. Defaults to 'Text'. .PARAMETER Text The text to replace the value with in the identified key. Only used when Type is set to 'Text'. .PARAMETER Secret The secret text to replace the value with in the identified key. Only used when Type is set to 'Secret'. .PARAMETER IgnoreNameCase Ignore the case of the name of the key. Defaults to $False. .PARAMETER IgnoreValueCase Ignore the case of any text or secret when determining if it they need to be updated. Defaults to $False. #> function Test-TargetResource { [OutputType([Boolean])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [String] $Path, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [String] $Name, [Parameter()] [ValidateSet('Present', 'Absent')] [String] $Ensure = 'Present', [Parameter()] [ValidateSet('Text', 'Secret')] [String] $Type = 'Text', [Parameter()] [String] $Text, [Parameter()] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Secret, [Parameter()] [System.Boolean] $IgnoreNameCase = $false, [Parameter()] [System.Boolean] $IgnoreValueCase = $false ) Assert-ParametersValid @PSBoundParameters # Flag to signal whether settings are correct [Boolean] $desiredConfigurationMatch = $true $fileContent = Get-Content -Path $Path -Raw Write-Verbose -Message ($localizedData.SearchForKeyMessage -f ` $Path, $Name) # Setup the Regex Options that will be used $regExOptions = [System.Text.RegularExpressions.RegexOptions]::Multiline if ($IgnoreNameCase) { $regExOptions += [System.Text.RegularExpressions.RegexOptions]::IgnoreCase } # Search the key that matches the requested key $results = [regex]::Matches($fileContent, "^[\s]*$Name=([^\n\r]*)", $regExOptions) if ($results.Count -eq 0) { # No matches found if ($Ensure -eq 'Present') { # The key value pairs should exist but do not Write-Verbose -Message ($localizedData.KeyNotFoundButShouldExistMessage -f ` $Path, $Name) $desiredConfigurationMatch = $false } else { # The key value pairs should exist and do Write-Verbose -Message ($localizedData.KeyNotFoundAndShouldNotExistMessage -f ` $Path, $Name) } # if } else { # One of more key value pairs were found if ($Ensure -eq 'Present') { # The key value pairs should exist - but check values if ($Type -eq 'Secret') { $Text = $Secret.GetNetworkCredential().Password } # if # Check each found key value pair and check it has the correct value foreach ($match in $results) { if (($IgnoreValueCase -and ($match.Groups[1].Value -ne $Text)) -or ` (-not $IgnoreValueCase -and ($match.Groups[1].Value -cne $Text))) { $desiredConfigurationMatch = $false } # } # foreach if ($desiredConfigurationMatch) { Write-Verbose -Message ($localizedData.KeyFoundButNoReplacementMessage -f ` $Path, $Name) } else { Write-Verbose -Message ($localizedData.KeyFoundReplacementRequiredMessage -f ` $Path, $Name) } # if } else { # The key value pairs should not exist Write-Verbose -Message ($localizedData.KeyFoundButShouldNotExistMessage -f ` $Path, $Name) $desiredConfigurationMatch = $false } # if } # if return $desiredConfigurationMatch } <# .SYNOPSIS Validates the parameters that have been passed are valid. If they are not valid then an exception will be thrown. .PARAMETER Path The path to the key value pair text file. .PARAMETER Name The name of the key. .PARAMETER Ensure Specifies the if the key value pair with the specified key should exist in the file. .PARAMETER Type Specifies the value type to use as the replacement string. Defaults to 'Text'. .PARAMETER Text The text to replace the value with in the identified key. Only used when Type is set to 'Text'. .PARAMETER Secret The secret text to replace the value with in the identified key. Only used when Type is set to 'Secret'. .PARAMETER IgnoreNameCase Ignore the case of the name of the key. Defaults to $False. .PARAMETER IgnoreValueCase Ignore the case of any text or secret when determining if it they need to be updated. Defaults to $False. #> function Assert-ParametersValid { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [String] $Path, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [String] $Name, [Parameter()] [ValidateSet('Present', 'Absent')] [String] $Ensure = 'Present', [Parameter()] [ValidateSet('Text', 'Secret')] [String] $Type = 'Text', [Parameter()] [String] $Text, [Parameter()] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Secret, [Parameter()] [System.Boolean] $IgnoreNameCase = $false, [Parameter()] [System.Boolean] $IgnoreValueCase = $false ) # Does the file in path exist? if (-not (Test-Path -Path $Path)) { New-InvalidArgumentException ` -Message ($localizedData.FileNotFoundError -f $Path) ` -ArgumentName 'Path' } # if } Export-ModuleMember -Function *-TargetResource |