DSCResources/DSC_KeyValuePairFile/DSC_KeyValuePairFile.psm1
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Set-StrictMode -Version 'Latest' $modulePath = Join-Path -Path (Split-Path -Path (Split-Path -Path $PSScriptRoot -Parent) -Parent) -ChildPath 'Modules' # Import the Networking Common Modules Import-Module -Name (Join-Path -Path $modulePath ` -ChildPath (Join-Path -Path 'FileContentDsc.Common' ` -ChildPath 'FileContentDsc.Common.psm1')) Import-Module -Name (Join-Path -Path $modulePath -ChildPath 'DscResource.Common') # Import Localization Strings $script:localizedData = Get-LocalizedData -DefaultUICulture 'en-US' <# .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()] [System.String] $Path, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Name ) Assert-ParametersValid @PSBoundParameters $ensure = 'Absent' $text = $null $fileEncoding = $null if (Test-Path -Path $Path) { $fileContent = Get-Content -Path $Path -Raw $fileEncoding = Get-FileEncoding -Path $Path if ($null -ne $fileContent) { Write-Verbose -Message ($script: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]*)", $regExOptions) if ($results.Count -eq 0) { # No matches found Write-Verbose -Message ($script: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 ($script:localizedData.KeyFoundMessage -f $Path, $Name, $text) } # if } else { Write-Verbose -Message ($script:localizedData.KeyValuePairFileIsEmpty -f $Path) } } else { Write-Verbose -Message ($script:localizedData.KeyValuePairFileNotFound -f $Path) } return @{ Path = $Path Name = $Name Encoding = $fileEncoding 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. .PARAMETER Encoding Specifies the file encoding. Defaults to ASCII. #> function Set-TargetResource { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Path, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Name, [Parameter()] [ValidateSet('Present', 'Absent')] [System.String] $Ensure = 'Present', [Parameter()] [ValidateSet('Text', 'Secret')] [System.String] $Type = 'Text', [Parameter()] [System.String] $Text, [Parameter()] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Secret, [Parameter()] [System.Boolean] $IgnoreNameCase = $false, [Parameter()] [System.Boolean] $IgnoreValueCase = $false, [Parameter()] [ValidateSet('ASCII', 'BigEndianUnicode', 'BigEndianUTF32', 'UTF8', 'UTF32')] [System.String] $Encoding ) Assert-ParametersValid @PSBoundParameters $fileContent = Get-Content -Path $Path -Raw -ErrorAction SilentlyContinue $fileEncoding = Get-FileEncoding -Path $Path -ErrorAction SilentlyContinue $fileProperties = @{ Path = $Path NoNewline = $true Force = $true } Write-Verbose -Message ($script:localizedData.SearchForKeyMessage -f $Path, $Name) if ($Type -eq 'Secret') { $Text = $Secret.GetNetworkCredential().Password } # if if ($null -ne $fileContent) { # 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 += $keyValuePair Write-Verbose -Message ($script:localizedData.KeyAddMessage -f $Path, $Name) } else { # The key value pair was found so update it $fileContent = [regex]::Replace($fileContent, "^[\s]*$Name=(.*)($eolChars*)", $keyValuePair, $regExOptions) Write-Verbose -Message ($script:localizedData.KeyUpdateMessage -f $Path, $Name) } # if } else { if ($results.Count -eq 0) { if ($PSBoundParameters.ContainsKey('Encoding') -and ($Encoding -eq $fileEncoding)) { # The Key does not exists and should not, and encoding is in the desired state, so don't do anything return } else { Write-Verbose -Message ($script:localizedData.FileEncodingNotInDesiredState -f $fileEncoding, $Encoding) } } else { # The Key exists in the file but should not so remove it $fileContent = [regex]::Replace($fileContent, "^[\s]*$Name=(.*)$eolChars", '', $regExOptions) Write-Verbose -Message ($script:localizedData.KeyRemoveMessage -f $Path, $Name) } } # if } else { $fileContent = '{0}={1}' -f $Name, $Text } # if $fileProperties.Add('Value', $fileContent) # Verify encoding is not set to the passed parameter or the default of ASCII if ($PSBoundParameters.ContainsKey('Encoding') -and ($Encoding -ne ($fileEncoding -or 'ASCII'))) { # Add encoding parameter and value to the hashtable $fileProperties.Add('Encoding', $Encoding) } Set-Content @fileProperties } <# .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. .PARAMETER Encoding Specifies the file encoding. Defaults to ASCII. #> function Test-TargetResource { [OutputType([System.Boolean])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Path, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Name, [Parameter()] [ValidateSet('Present', 'Absent')] [System.String] $Ensure = 'Present', [Parameter()] [ValidateSet('Text', 'Secret')] [System.String] $Type = 'Text', [Parameter()] [System.String] $Text, [Parameter()] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Secret, [Parameter()] [System.Boolean] $IgnoreNameCase = $false, [Parameter()] [System.Boolean] $IgnoreValueCase = $false, [Parameter()] [ValidateSet('ASCII', 'BigEndianUnicode', 'BigEndianUTF32', 'UTF8', 'UTF32')] [System.String] $Encoding ) Assert-ParametersValid @PSBoundParameters <# If the file being managed does not exist then return true if the key should be absent or false if it should be present. #> if (-not (Test-Path -Path $Path)) { Write-Verbose -Message ($script:localizedData.KeyValuePairFileNotFound -f $Path) return ($Ensure -eq 'Absent') } $fileContent = Get-Content -Path $Path -Raw if ($null -eq $fileContent) { Write-Verbose -Message ($script:localizedData.KeyValuePairFileIsEmpty -f $Path) return ($Ensure -eq 'Absent') } $desiredConfigurationMatch = $true $fileEncoding = Get-FileEncoding -Path $Path $regExOptions = [System.Text.RegularExpressions.RegexOptions]::Multiline Write-Verbose -Message ($script:localizedData.SearchForKeyMessage -f $Path, $Name) if ($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 ($Ensure -eq 'Present') { # The key value pairs should exist but do not Write-Verbose -Message ($script:localizedData.KeyNotFoundButShouldExistMessage -f $Path, $Name) $desiredConfigurationMatch = $false } else { # The key value pairs should exist and do Write-Verbose -Message ($script:localizedData.KeyNotFoundAndShouldNotExistMessage -f $Path, $Name) } # if } else { # One or more key value pairs were found if ($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 ($script:localizedData.KeyFoundButNoReplacementMessage -f $Path, $Name) } } else { # The key value pairs should not exist Write-Verbose -Message ($script:localizedData.KeyFoundButShouldNotExistMessage -f $Path, $Name) $desiredConfigurationMatch = $false } # if } # if if ($PSBoundParameters.ContainsKey('Encoding') -and ($Encoding -ne $fileEncoding)) { # File encoding is not in desired state Write-Verbose -Message ($script:localizedData.FileEncodingNotInDesiredState -f $fileEncoding, $Encoding) $desiredConfigurationMatch = $false } 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. .PARAMETER Encoding Specifies the file encoding. Defaults to ASCII. #> function Assert-ParametersValid { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Path, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Name, [Parameter()] [ValidateSet('Present', 'Absent')] [System.String] $Ensure = 'Present', [Parameter()] [ValidateSet('Text', 'Secret')] [System.String] $Type = 'Text', [Parameter()] [System.String] $Text, [Parameter()] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Secret, [Parameter()] [System.Boolean] $IgnoreNameCase = $false, [Parameter()] [System.Boolean] $IgnoreValueCase = $false, [Parameter()] [ValidateSet('ASCII', 'BigEndianUnicode', 'BigEndianUTF32', 'UTF8', 'UTF32')] [System.String] $Encoding ) # Does the file's parent path exist? $parentPath = Split-Path -Path $Path -Parent if (-not (Test-Path -Path $parentPath)) { New-InvalidArgumentException ` -Message ($script:localizedData.FileParentNotFoundError -f $Path) ` -ArgumentName 'Path' } # if } Export-ModuleMember -Function *-TargetResource |