DSCResources/MSFT_xIPAddress/MSFT_xIPAddress.psm1
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####################################################################################### # xIPAddress : DSC Resource that will set/test/get the current IP # Address, by accepting values among those given in xIPAddress.schema.mof ####################################################################################### data LocalizedData { # culture="en-US" ConvertFrom-StringData -StringData @' GettingIPAddressMessage=Getting the IP Address. ApplyingIPAddressMessage=Applying the IP Address. IPAddressSetStateMessage=IP Interface was set to the desired state. CheckingIPAddressMessage=Checking the IP Address. IPAddressDoesNotMatchMessage=IP Address does NOT match desired state. Expected {0}, actual {1}. IPAddressMatchMessage=IP Address is in desired state. SubnetMaskDoesNotMatchMessage=Subnet mask does NOT match desired state. Expected {0}, actual {1}. SubnetMaskMatchMessage=Subnet mask is in desired state. DHCPIsNotDisabledMessage=DHCP is NOT disabled. DHCPIsAlreadyDisabledMessage=DHCP is already disabled. InterfaceNotAvailableError=Interface "{0}" is not available. Please select a valid interface and try again. AddressFormatError=Address "{0}" is not in the correct format. Please correct the Address parameter in the configuration and try again. AddressIPv4MismatchError=Address "{0}" is in IPv4 format, which does not match server address family {1}. Please correct either of them in the configuration and try again. AddressIPv6MismatchError=Address "{0}" is in IPv6 format, which does not match server address family {1}. Please correct either of them in the configuration and try again. SubnetMaskError=A Subnet Mask of {0} is not valid for {1} addresses. Please correct the subnet mask and try again. '@ } ###################################################################################### # The Get-TargetResource cmdlet. # This function will get the present list of IP Address DSC Resource schema variables on the system ###################################################################################### function Get-TargetResource { [OutputType([System.Collections.Hashtable])] param ( [Parameter(Mandatory)] [ValidateNotNullOrEmpty()] [String]$IPAddress, [Parameter(Mandatory)] [ValidateNotNullOrEmpty()] [String]$InterfaceAlias, [uInt32]$SubnetMask = 16, [ValidateSet('IPv4', 'IPv6')] [String]$AddressFamily = 'IPv4' ) Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($LocalizedData.GettingIPAddressMessage) ) -join '') $CurrentIPAddress = Get-NetIPAddress ` -InterfaceAlias $InterfaceAlias ` -AddressFamily $AddressFamily $returnValue = @{ IPAddress = [System.String]::Join(', ',$CurrentIPAddress.IPAddress) SubnetMask = [System.String]::Join(', ',$CurrentIPAddress.PrefixLength) AddressFamily = $AddressFamily InterfaceAlias = $InterfaceAlias } $returnValue } ###################################################################################### # The Set-TargetResource cmdlet. # This function will set a new IP Address in the current node ###################################################################################### function Set-TargetResource { param ( #IP Address that has to be set [Parameter(Mandatory)] [ValidateNotNullOrEmpty()] [String]$IPAddress, [Parameter(Mandatory)] [ValidateNotNullOrEmpty()] [String]$InterfaceAlias, [uInt32]$SubnetMask, [ValidateSet('IPv4', 'IPv6')] [String]$AddressFamily = 'IPv4' ) Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($LocalizedData.ApplyingIPAddressMessage) ) -join '') # Use $AddressFamily to select the IPv4 or IPv6 destination prefix $DestinationPrefix = '0.0.0.0/0' if ($AddressFamily -eq 'IPv6') { $DestinationPrefix = '::/0' } # Get all the default routes - this has to be done in case the IP Address is # beng Removed $defaultRoutes = @(Get-NetRoute ` -InterfaceAlias $InterfaceAlias ` -AddressFamily $AddressFamily ` -ErrorAction Stop).Where( { $_.DestinationPrefix -eq $DestinationPrefix } ) # Remove any default routes on the specified interface -- it is important to do # this *before* removing the IP address, particularly in the case where the IP # address was auto-configured by DHCP if ($defaultRoutes) { foreach ($defaultRoute in $defaultRoutes) { Remove-NetRoute ` -DestinationPrefix $defaultRoute.DestinationPrefix ` -NextHop $defaultRoute.NextHop ` -InterfaceIndex $defaultRoute.InterfaceIndex ` -AddressFamily $defaultRoute.AddressFamily ` -Confirm:$false ` -ErrorAction Stop } } # Get the current IP Address based on the parameters given. $currentIPs = @(Get-NetIPAddress ` -InterfaceAlias $InterfaceAlias ` -AddressFamily $AddressFamily ` -ErrorAction Stop) # Remove any IP addresses on the specified interface if ($currentIPs) { foreach ($CurrentIP in $CurrentIPs) { Remove-NetIPAddress ` -IPAddress $CurrentIP.IPAddress ` -InterfaceIndex $CurrentIP.InterfaceIndex ` -AddressFamily $CurrentIP.AddressFamily ` -Confirm:$false ` -ErrorAction Stop } } # Build parameter hash table $Parameters = @{ IPAddress = $IPAddress PrefixLength = $SubnetMask InterfaceAlias = $InterfaceAlias } # Apply the specified IP configuration $null = New-NetIPAddress @Parameters -ErrorAction Stop Write-Verbose -Message ( @("$($MyInvocation.MyCommand): " $($LocalizedData.IPAddressSetStateMessage) ) -join '' ) } # Set-TargetResource ###################################################################################### # The Test-TargetResource cmdlet. # This will test if the given IP Address is among the current node's IP Address collection ###################################################################################### function Test-TargetResource { [OutputType([System.Boolean])] param ( [Parameter(Mandatory)] [ValidateNotNullOrEmpty()] [String]$IPAddress, [Parameter(Mandatory)] [ValidateNotNullOrEmpty()] [String]$InterfaceAlias, [uInt32]$SubnetMask = 16, [ValidateSet('IPv4', 'IPv6')] [String]$AddressFamily = 'IPv4' ) # Flag to signal whether settings are correct [Boolean] $desiredConfigurationMatch = $true Write-Verbose -Message ( @("$($MyInvocation.MyCommand): " $($LocalizedData.CheckingIPAddressMessage) ) -join '') Test-ResourceProperty @PSBoundParameters # Get the current IP Address based on the parameters given. $currentIPs = @(Get-NetIPAddress ` -InterfaceAlias $InterfaceAlias ` -AddressFamily $AddressFamily ` -ErrorAction Stop) # Test if the IP Address passed is present if (-not $currentIPs.IPAddress.Contains($IPAddress)) { Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($LocalizedData.IPAddressDoesNotMatchMessage) -f $IPAddress,$currentIPs.IPAddress ) -join '' ) $desiredConfigurationMatch = $false } else { Write-Verbose -Message ( @("$($MyInvocation.MyCommand): " $($LocalizedData.IPAddressMatchMessage) ) -join '') # Filter the IP addresses for the IP address to check $filterIP = $currentIPs.Where( { $_.IPAddress -eq $IPAddress } ) # Only test the Subnet Mask if the IP address is present if (-not $filterIP.PrefixLength.Equals([byte]$SubnetMask)) { Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($LocalizedData.SubnetMaskDoesNotMatchMessage) -f $SubnetMask,$currentIPs.PrefixLength ) -join '' ) $desiredConfigurationMatch = $false } else { Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($LocalizedData.SubnetMaskMatchMessage) ) -join '' ) } } # Test if DHCP is already disabled if (-not (Get-NetIPInterface ` -InterfaceAlias $InterfaceAlias ` -AddressFamily $AddressFamily).Dhcp.ToString().Equals('Disabled')) { Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($LocalizedData.DHCPIsNotDisabledMessage) ) -join '' ) $desiredConfigurationMatch = $false } else { Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($LocalizedData.DHCPIsAlreadyDisabledMessage) ) -join '' ) } return $desiredConfigurationMatch } # Test-TargetResource ####################################################################################### # Helper functions ####################################################################################### function Test-ResourceProperty { # Function will check the IP Address details are valid and do not conflict with # Address family. Also checks the subnet mask and ensures the interface exists. # If any problems are detected an exception will be thrown. [CmdletBinding()] param ( [Parameter(Mandatory)] [ValidateNotNullOrEmpty()] [String]$IPAddress, [Parameter(Mandatory)] [ValidateNotNullOrEmpty()] [String]$InterfaceAlias, [uInt32]$SubnetMask = 16, [ValidateSet('IPv4', 'IPv6')] [String]$AddressFamily = 'IPv4' ) if (-not (Get-NetAdapter | Where-Object -Property Name -EQ $InterfaceAlias )) { $errorId = 'InterfaceNotAvailable' $errorCategory = [System.Management.Automation.ErrorCategory]::DeviceError $errorMessage = $($LocalizedData.InterfaceNotAvailableError) -f $InterfaceAlias $exception = New-Object -TypeName System.InvalidOperationException ` -ArgumentList $errorMessage $errorRecord = New-Object -TypeName System.Management.Automation.ErrorRecord ` -ArgumentList $exception, $errorId, $errorCategory, $null $PSCmdlet.ThrowTerminatingError($errorRecord) } if (-not ([System.Net.Ipaddress]::TryParse($IPAddress, [ref]0))) { $errorId = 'AddressFormatError' $errorCategory = [System.Management.Automation.ErrorCategory]::InvalidArgument $errorMessage = $($LocalizedData.AddressFormatError) -f $IPAddress $exception = New-Object -TypeName System.InvalidOperationException ` -ArgumentList $errorMessage $errorRecord = New-Object -TypeName System.Management.Automation.ErrorRecord ` -ArgumentList $exception, $errorId, $errorCategory, $null $PSCmdlet.ThrowTerminatingError($errorRecord) } $detectedAddressFamily = ([System.Net.IPAddress]$IPAddress).AddressFamily.ToString() if (($detectedAddressFamily -eq [System.Net.Sockets.AddressFamily]::InterNetwork.ToString()) ` -and ($AddressFamily -ne 'IPv4')) { $errorId = 'AddressMismatchError' $errorCategory = [System.Management.Automation.ErrorCategory]::InvalidArgument $errorMessage = $($LocalizedData.AddressIPv4MismatchError) -f $IPAddress,$AddressFamily $exception = New-Object -TypeName System.InvalidOperationException ` -ArgumentList $errorMessage $errorRecord = New-Object -TypeName System.Management.Automation.ErrorRecord ` -ArgumentList $exception, $errorId, $errorCategory, $null $PSCmdlet.ThrowTerminatingError($errorRecord) } if (($detectedAddressFamily -eq [System.Net.Sockets.AddressFamily]::InterNetworkV6.ToString()) ` -and ($AddressFamily -ne 'IPv6')) { $errorId = 'AddressMismatchError' $errorCategory = [System.Management.Automation.ErrorCategory]::InvalidArgument $errorMessage = $($LocalizedData.AddressIPv6MismatchError) -f $IPAddress,$AddressFamily $exception = New-Object -TypeName System.InvalidOperationException ` -ArgumentList $errorMessage $errorRecord = New-Object -TypeName System.Management.Automation.ErrorRecord ` -ArgumentList $exception, $errorId, $errorCategory, $null $PSCmdlet.ThrowTerminatingError($errorRecord) } if (( ($AddressFamily -eq 'IPv4') ` -and (($SubnetMask -lt [uint32]0) -or ($SubnetMask -gt [uint32]32)) ) -or ( ($AddressFamily -eq 'IPv6') ` -and (($SubnetMask -lt [uint32]0) -or ($SubnetMask -gt [uint32]128)) )) { $errorId = 'SubnetMaskError' $errorCategory = [System.Management.Automation.ErrorCategory]::InvalidArgument $errorMessage = $($LocalizedData.SubnetMaskError) -f $SubnetMask,$AddressFamily $exception = New-Object -TypeName System.InvalidOperationException ` -ArgumentList $errorMessage $errorRecord = New-Object -TypeName System.Management.Automation.ErrorRecord ` -ArgumentList $exception, $errorId, $errorCategory, $null $PSCmdlet.ThrowTerminatingError($errorRecord) } } # Test-ResourceProperty ####################################################################################### # FUNCTIONS TO BE EXPORTED Export-ModuleMember -function Get-TargetResource, Set-TargetResource, Test-TargetResource |