DSCResources/xPSDesiredStateConfiguration/Modules/xPSDesiredStateConfiguration.Common/xPSDesiredStateConfiguration.Common.psm1
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<# .SYNOPSIS Tests if the current machine is a Nano server. #> function Test-IsNanoServer { [OutputType([System.Boolean])] [CmdletBinding()] param () $isNanoServer = $false if (Test-CommandExists -Name 'Get-ComputerInfo') { $computerInfo = Get-ComputerInfo $computerIsServer = 'Server' -ieq $computerInfo.OsProductType if ($computerIsServer) { $isNanoServer = 'NanoServer' -ieq $computerInfo.OsServerLevel } } return $isNanoServer } <# .SYNOPSIS Tests whether or not the command with the specified name exists. .PARAMETER Name The name of the command to test for. #> function Test-CommandExists { [OutputType([System.Boolean])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Name ) $command = Get-Command -Name $Name -ErrorAction 'SilentlyContinue' return ($null -ne $command) } <# .SYNOPSIS This method is used to compare current and desired values for any DSC resource. .PARAMETER CurrentValues This is hash table of the current values that are applied to the resource. .PARAMETER DesiredValues This is a PSBoundParametersDictionary of the desired values for the resource. .PARAMETER ValuesToCheck This is a list of which properties in the desired values list should be checked. If this is empty then all values in DesiredValues are checked. #> function Test-DscParameterState { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [System.Collections.Hashtable] $CurrentValues, [Parameter(Mandatory = $true)] [System.Object] $DesiredValues, [Parameter()] [System.Array] $ValuesToCheck ) $returnValue = $true if (($DesiredValues.GetType().Name -ne 'HashTable') ` -and ($DesiredValues.GetType().Name -ne 'CimInstance') ` -and ($DesiredValues.GetType().Name -ne 'PSBoundParametersDictionary')) { $errorMessage = $script:localizedData.PropertyTypeInvalidForDesiredValues -f $($DesiredValues.GetType().Name) New-InvalidArgumentException -ArgumentName 'DesiredValues' -Message $errorMessage } if (($DesiredValues.GetType().Name -eq 'CimInstance') -and ($null -eq $ValuesToCheck)) { $errorMessage = $script:localizedData.PropertyTypeInvalidForValuesToCheck New-InvalidArgumentException -ArgumentName 'ValuesToCheck' -Message $errorMessage } if (($null -eq $ValuesToCheck) -or ($ValuesToCheck.Count -lt 1)) { $keyList = $DesiredValues.Keys } else { $keyList = $ValuesToCheck } $keyList | ForEach-Object -Process { if (($_ -ne 'Verbose')) { if (($CurrentValues.ContainsKey($_) -eq $false) ` -or ($CurrentValues.$_ -ne $DesiredValues.$_) ` -or (($DesiredValues.GetType().Name -ne 'CimInstance' -and $DesiredValues.ContainsKey($_) -eq $true) -and ($null -ne $DesiredValues.$_ -and $DesiredValues.$_.GetType().IsArray))) { if ($DesiredValues.GetType().Name -eq 'HashTable' -or ` $DesiredValues.GetType().Name -eq 'PSBoundParametersDictionary') { $checkDesiredValue = $DesiredValues.ContainsKey($_) } else { # If DesiredValue is a CimInstance. $checkDesiredValue = $false if (([System.Boolean]($DesiredValues.PSObject.Properties.Name -contains $_)) -eq $true) { if ($null -ne $DesiredValues.$_) { $checkDesiredValue = $true } } } if ($checkDesiredValue) { $desiredType = $DesiredValues.$_.GetType() $fieldName = $_ if ($desiredType.IsArray -eq $true) { if (($CurrentValues.ContainsKey($fieldName) -eq $false) ` -or ($null -eq $CurrentValues.$fieldName)) { Write-Verbose -Message ($script:localizedData.PropertyValidationError -f $fieldName) -Verbose $returnValue = $false } else { $arrayCompare = Compare-Object -ReferenceObject $CurrentValues.$fieldName ` -DifferenceObject $DesiredValues.$fieldName if ($null -ne $arrayCompare) { Write-Verbose -Message ($script:localizedData.PropertiesDoesNotMatch -f $fieldName) -Verbose $arrayCompare | ForEach-Object -Process { Write-Verbose -Message ($script:localizedData.PropertyThatDoesNotMatch -f $_.InputObject, $_.SideIndicator) -Verbose } $returnValue = $false } } } else { switch ($desiredType.Name) { 'String' { if (-not [System.String]::IsNullOrEmpty($CurrentValues.$fieldName) -or ` -not [System.String]::IsNullOrEmpty($DesiredValues.$fieldName)) { Write-Verbose -Message ($script:localizedData.ValueOfTypeDoesNotMatch ` -f $desiredType.Name, $fieldName, $($CurrentValues.$fieldName), $($DesiredValues.$fieldName)) -Verbose $returnValue = $false } } 'Int32' { if (-not ($DesiredValues.$fieldName -eq 0) -or ` -not ($null -eq $CurrentValues.$fieldName)) { Write-Verbose -Message ($script:localizedData.ValueOfTypeDoesNotMatch ` -f $desiredType.Name, $fieldName, $($CurrentValues.$fieldName), $($DesiredValues.$fieldName)) -Verbose $returnValue = $false } } { $_ -eq 'Int16' -or $_ -eq 'UInt16' -or $_ -eq 'Single' } { if (-not ($DesiredValues.$fieldName -eq 0) -or ` -not ($null -eq $CurrentValues.$fieldName)) { Write-Verbose -Message ($script:localizedData.ValueOfTypeDoesNotMatch ` -f $desiredType.Name, $fieldName, $($CurrentValues.$fieldName), $($DesiredValues.$fieldName)) -Verbose $returnValue = $false } } 'Boolean' { if ($CurrentValues.$fieldName -ne $DesiredValues.$fieldName) { Write-Verbose -Message ($script:localizedData.ValueOfTypeDoesNotMatch ` -f $desiredType.Name, $fieldName, $($CurrentValues.$fieldName), $($DesiredValues.$fieldName)) -Verbose $returnValue = $false } } default { Write-Warning -Message ($script:localizedData.UnableToCompareProperty ` -f $fieldName, $desiredType.Name) $returnValue = $false } } } } } } } return $returnValue } <# .SYNOPSIS Retrieves the localized string data based on the machine's culture. Falls back to en-US strings if the machine's culture is not supported. .PARAMETER ResourceName The name of the resource as it appears before '.strings.psd1' of the localized string file. For example: For WindowsOptionalFeature: MSFT_WindowsOptionalFeature For Service: MSFT_ServiceResource For Registry: MSFT_RegistryResource For Helper: SqlServerDscHelper .PARAMETER ScriptRoot Optional. The root path where to expect to find the culture folder. This is only needed for localization in helper modules. This should not normally be used for resources. .NOTES To be able to use localization in the helper function, this function must be first in the file, before Get-LocalizedData is used by itself to load localized data for this helper module (see directly after this function). #> function Get-LocalizedData { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $ResourceName, [Parameter()] [ValidateNotNullOrEmpty()] [System.String] $ScriptRoot ) if (-not $ScriptRoot) { $dscResourcesFolder = Join-Path -Path (Split-Path -Path (Split-Path -Path $PSScriptRoot -Parent) -Parent) -ChildPath 'DSCResources' $resourceDirectory = Join-Path -Path $dscResourcesFolder -ChildPath $ResourceName } else { $resourceDirectory = $ScriptRoot } $localizedStringFileLocation = Join-Path -Path $resourceDirectory -ChildPath $PSUICulture if (-not (Test-Path -Path $localizedStringFileLocation)) { # Fallback to en-US $localizedStringFileLocation = Join-Path -Path $resourceDirectory -ChildPath 'en-US' } Import-LocalizedData ` -BindingVariable 'localizedData' ` -FileName "$ResourceName.strings.psd1" ` -BaseDirectory $localizedStringFileLocation return $localizedData } <# .SYNOPSIS Creates and throws an invalid argument exception. .PARAMETER Message The message explaining why this error is being thrown. .PARAMETER ArgumentName The name of the invalid argument that is causing this error to be thrown. #> function New-InvalidArgumentException { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Message, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $ArgumentName ) $argumentException = New-Object -TypeName 'ArgumentException' ` -ArgumentList @($Message, $ArgumentName) $newObjectParameters = @{ TypeName = 'System.Management.Automation.ErrorRecord' ArgumentList = @($argumentException, $ArgumentName, 'InvalidArgument', $null) } $errorRecord = New-Object @newObjectParameters throw $errorRecord } <# .SYNOPSIS Creates and throws an invalid data exception. .PARAMETER ErrorId The error Id to assign to the exception. .PARAMETER ErrorMessage The error message to assign to the exception. #> function New-InvalidDataException { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [System.String] $ErrorId, [Parameter(Mandatory = $true)] [System.String] $ErrorMessage ) $errorCategory = [System.Management.Automation.ErrorCategory]::InvalidData $exception = New-Object ` -TypeName System.InvalidOperationException ` -ArgumentList $ErrorMessage $errorRecord = New-Object ` -TypeName System.Management.Automation.ErrorRecord ` -ArgumentList $exception, $ErrorId, $errorCategory, $null throw $errorRecord } <# .SYNOPSIS Creates and throws an invalid operation exception. .PARAMETER Message The message explaining why this error is being thrown. .PARAMETER ErrorRecord The error record containing the exception that is causing this terminating error. #> function New-InvalidOperationException { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Message, [Parameter()] [ValidateNotNull()] [System.Management.Automation.ErrorRecord] $ErrorRecord ) if ($null -eq $ErrorRecord) { $invalidOperationException = New-Object -TypeName 'InvalidOperationException' ` -ArgumentList @($Message) } else { $invalidOperationException = New-Object -TypeName 'InvalidOperationException' ` -ArgumentList @($Message, $ErrorRecord.Exception) } $newObjectParameters = @{ TypeName = 'System.Management.Automation.ErrorRecord' ArgumentList = @( $invalidOperationException.ToString(), 'MachineStateIncorrect', 'InvalidOperation', $null ) } $errorRecordToThrow = New-Object @newObjectParameters throw $errorRecordToThrow } <# .SYNOPSIS Creates and throws an object not found exception. .PARAMETER Message The message explaining why this error is being thrown. .PARAMETER ErrorRecord The error record containing the exception that is causing this terminating error. #> function New-ObjectNotFoundException { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Message, [Parameter()] [ValidateNotNull()] [System.Management.Automation.ErrorRecord] $ErrorRecord ) if ($null -eq $ErrorRecord) { $exception = New-Object -TypeName 'System.Exception' ` -ArgumentList @($Message) } else { $exception = New-Object -TypeName 'System.Exception' ` -ArgumentList @($Message, $ErrorRecord.Exception) } $newObjectParameters = @{ TypeName = 'System.Management.Automation.ErrorRecord' ArgumentList = @( $exception.ToString(), 'MachineStateIncorrect', 'ObjectNotFound', $null ) } $errorRecordToThrow = New-Object @newObjectParameters throw $errorRecordToThrow } <# .SYNOPSIS Creates and throws an invalid result exception. .PARAMETER Message The message explaining why this error is being thrown. .PARAMETER ErrorRecord The error record containing the exception that is causing this terminating error. #> function New-InvalidResultException { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Message, [Parameter()] [ValidateNotNull()] [System.Management.Automation.ErrorRecord] $ErrorRecord ) if ($null -eq $ErrorRecord) { $exception = New-Object -TypeName 'System.Exception' ` -ArgumentList @($Message) } else { $exception = New-Object -TypeName 'System.Exception' ` -ArgumentList @($Message, $ErrorRecord.Exception) } $newObjectParameters = @{ TypeName = 'System.Management.Automation.ErrorRecord' ArgumentList = @( $exception.ToString(), 'MachineStateIncorrect', 'InvalidResult', $null ) } $errorRecordToThrow = New-Object @newObjectParameters throw $errorRecordToThrow } function New-NotImplementedException { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Message, [Parameter()] [ValidateNotNull()] [System.Management.Automation.ErrorRecord] $ErrorRecord ) if ($null -eq $ErrorRecord) { $invalidOperationException = New-Object -TypeName 'NotImplementedException' ` -ArgumentList @($Message) } else { $invalidOperationException = New-Object -TypeName 'NotImplementedException' ` -ArgumentList @($Message, $ErrorRecord.Exception) } $newObjectParameters = @{ TypeName = 'System.Management.Automation.ErrorRecord' ArgumentList = @( $invalidOperationException.ToString(), 'MachineStateIncorrect', 'NotImplemented', $null ) } $errorRecordToThrow = New-Object @newObjectParameters throw $errorRecordToThrow } <# .SYNOPSIS Sets the Global DSCMachineStatus variable to a value of 1. #> function Set-DscMachineRebootRequired { # Suppressing this rule because $global:DSCMachineStatus is used to trigger a reboot. [System.Diagnostics.CodeAnalysis.SuppressMessageAttribute('PSAvoidGlobalVars', '')] <# Suppressing this rule because $global:DSCMachineStatus is only set, never used (by design of Desired State Configuration). #> [System.Diagnostics.CodeAnalysis.SuppressMessageAttribute('PSUseDeclaredVarsMoreThanAssignments', '')] [CmdletBinding()] param ( ) $global:DSCMachineStatus = 1 } <# .SYNOPSIS Builds a string of the common parameters shared across all resources in a set. .PARAMETER KeyParameterName The name of the key parameter for the resource. .PARAMETER Parameters The hashtable of all parameters to the resource set (PSBoundParameters). .EXAMPLE $parameters = @{ KeyParameter = @( 'MyKeyParameter1', 'MyKeyParameter2' ) CommonParameter1 = 'CommonValue1' CommonParameter2 = 2 } New-ResourceSetCommonParameterString -KeyParameterName 'KeyParameter' -Parameters $parameters OUTPUT (as string): CommonParameter1 = "CommonValue1"`r`nCommonParameter2 = $CommonParameter2 #> function New-ResourceSetCommonParameterString { [OutputType([System.String])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $KeyParameterName, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.Collections.Hashtable] $Parameters ) $stringBuilder = New-Object -TypeName 'System.Text.StringBuilder' foreach ($parameterName in $Parameters.Keys) { # All composite resources have an extra parameter 'InstanceName' if ($parameterName -ine $KeyParameterName -and $parameterName -ine 'InstanceName') { $parameterValue = $Parameters[$parameterName] if ($null -ne $parameterValue) { if ($parameterValue -is [System.String]) { $null = $stringBuilder.AppendFormat('{0} = "{1}"', $parameterName, $parameterValue) } else { $null = $stringBuilder.Append($parameterName + ' = $' + $parameterName) } $null = $stringBuilder.AppendLine() } } } return $stringBuilder.ToString() } <# .SYNOPSIS Creates a string representing a configuration script for a set of resources. .PARAMETER ResourceName The name of the resource to create a set of. .PARAMETER ModuleName The name of the module to import the resource from. .PARAMETER KeyParameterName The name of the key parameter that will differentiate each resource. .PARAMETER KeyParameterValues An array of the values of the key parameter that will differentiate each resource. .PARAMETER CommonParameterString A string representing the common parameters for each resource. Can be retrieved from New-ResourceSetCommonParameterString. .EXAMPLE New-ResourceSetConfigurationString ` -ResourceName 'xWindowsFeature' ` -ModuleName 'xPSDesiredStateConfiguration' ` -KeyParameterName 'Name' ` -KeyParameterValues @( 'Telnet-Client', 'Web-Server' ) ` -CommonParameterString 'Ensure = "Present"`r`nIncludeAllSubFeature = $true' OUTPUT (as a String): Import-Module -Name xWindowsFeature -ModuleName xPSDesiredStateConfiguration xWindowsFeature Resource0 { Name = "Telnet-Client" Ensure = "Present" IncludeAllSubFeature = $true } xWindowsFeature Resource1 { Name = "Web-Server" Ensure = "Present" IncludeAllSubFeature = $true } #> function New-ResourceSetConfigurationString { [OutputType([System.String])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $ResourceName, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $ModuleName, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $KeyParameterName, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String[]] $KeyParameterValues, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $CommonParameterString ) $stringBuilder = New-Object -TypeName 'System.Text.StringBuilder' $null = $stringBuilder.AppendFormat('Import-DscResource -Name {0} -ModuleName {1}', $ResourceName, $ModuleName) $null = $stringBuilder.AppendLine() $resourceCount = 0 foreach ($keyParameterValue in $KeyParameterValues) { $null = $stringBuilder.AppendFormat('{0} Resource{1}', $ResourceName, $resourceCount) $null = $stringBuilder.AppendLine() $null = $stringBuilder.AppendLine('{') $null = $stringBuilder.AppendFormat($KeyParameterName + ' = "{0}"', $keyParameterValue) $null = $stringBuilder.AppendLine() $null = $stringBuilder.Append($CommonParameterString) $null = $stringBuilder.AppendLine('}') $resourceCount++ } return $stringBuilder.ToString() } <# .SYNOPSIS Creates a configuration script block for a set of resources. .PARAMETER ResourceName The name of the resource to create a set of. .PARAMETER ModuleName The name of the module to import the resource from. .PARAMETER KeyParameterName The name of the key parameter that will differentiate each resource. .PARAMETER Parameters The hashtable of all parameters to the resource set (PSBoundParameters). .EXAMPLE # From the xGroupSet composite resource $newResourceSetConfigurationParams = @{ ResourceName = 'xGroup' ModuleName = 'xPSDesiredStateConfiguration' KeyParameterName = 'GroupName' CommonParameterNames = @( 'Ensure', 'MembersToInclude', 'MembersToExclude', 'Credential' ) Parameters = $PSBoundParameters } $configurationScriptBlock = New-ResourceSetConfigurationScriptBlock @newResourceSetConfigurationParams .NOTES Only allows one key parameter to be defined for each node. For resources with multiple key parameters, only one key can be different for each resource. See xProcessSet for an example of a resource set with two key parameters. #> function New-ResourceSetConfigurationScriptBlock { [OutputType([System.Management.Automation.ScriptBlock])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $ResourceName, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $ModuleName, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $KeyParameterName, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.Collections.Hashtable] $Parameters ) $commonParameterString = New-ResourceSetCommonParameterString -KeyParameterName $KeyParameterName -Parameters $Parameters $newResourceSetConfigurationStringParams = @{ ResourceName = $ResourceName ModuleName = $ModuleName KeyParameterName = $KeyParameterName KeyParameterValues = $Parameters[$KeyParameterName] CommonParameterString = $commonParameterString } $resourceString = New-ResourceSetConfigurationString @newResourceSetConfigurationStringParams return [System.Management.Automation.ScriptBlock]::Create($resourceString) } $script:localizedData = Get-LocalizedData -ResourceName 'xPSDesiredStateConfiguration.Common' -ScriptRoot $PSScriptRoot |