Modules/NetworkingDsc.Common/NetworkingDsc.Common.psm1
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# Import the Networking Resource Helper Module Import-Module -Name (Join-Path -Path (Split-Path -Path $PSScriptRoot -Parent) ` -ChildPath (Join-Path -Path 'NetworkingDsc.ResourceHelper' ` -ChildPath 'NetworkingDsc.ResourceHelper.psm1')) # Import Localization Strings $script:localizedData = Get-LocalizedData ` -ResourceName 'NetworkingDsc.Common' ` -ResourcePath $PSScriptRoot <# .SYNOPSIS Converts any IP Addresses containing CIDR notation filters in an array to use Subnet Mask notation. .PARAMETER Address The array of addresses to that need to be converted. #> function Convert-CIDRToSubhetMask { [CmdletBinding()] [OutputType([ Microsoft.Management.Infrastructure.CimInstance])] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [String[]] $Address ) $Results = @() foreach ($Entry in $Address) { if (-not $Entry.Contains(':') -and -not $Entry.Contains('-')) { $EntrySplit = $Entry -split '/' if (-not [String]::IsNullOrEmpty($EntrySplit[1])) { # There was a / so this contains a Subnet Mask or CIDR $Prefix = $EntrySplit[0] $Postfix = $EntrySplit[1] if ($Postfix -match '^[0-9]*$') { # The postfix contains CIDR notation so convert this to Subnet Mask $Cidr = [Int] $Postfix $SubnetMaskInt64 = ([convert]::ToInt64(('1' * $Cidr + '0' * (32 - $Cidr)), 2)) $SubnetMask = @( ([math]::Truncate($SubnetMaskInt64 / 16777216)) ([math]::Truncate(($SubnetMaskInt64 % 16777216) / 65536)) ([math]::Truncate(($SubnetMaskInt64 % 65536)/256)) ([math]::Truncate($SubnetMaskInt64 % 256)) ) } else { $SubnetMask = $Postfix -split '\.' } # Apply the Subnet Mast to the IP Address so that we end up with a correctly # masked IP Address that will match what the Firewall rule returns. $MaskedIp = $Prefix -split '\.' for ([int] $Octet = 0; $Octet -lt 4; $Octet++) { $MaskedIp[$Octet] = $MaskedIp[$Octet] -band $SubnetMask[$Octet] } $Entry = '{0}/{1}' -f ($MaskedIp -join '.'),($SubnetMask -join '.') } } $Results += $Entry } return $Results } # Convert-CIDRToSubhetMask <# .SYNOPSIS This function will find a network adapter based on the provided search parameters. .PARAMETER Name This is the name of network adapter to find. .PARAMETER PhysicalMediaType This is the media type of the network adapter to find. .PARAMETER Status This is the status of the network adapter to find. .PARAMETER MacAddress This is the MAC address of the network adapter to find. .PARAMETER InterfaceDescription This is the interface description of the network adapter to find. .PARAMETER InterfaceIndex This is the interface index of the network adapter to find. .PARAMETER InterfaceGuid This is the interface GUID of the network adapter to find. .PARAMETER DriverDescription This is the driver description of the network adapter. .PARAMETER InterfaceNumber This is the interface number of the network adapter if more than one are returned by the parameters. .PARAMETER IgnoreMultipleMatchingAdapters This switch will suppress an error occurring if more than one matching adapter matches the parameters passed. #> function Find-NetworkAdapter { [CmdletBinding()] [OutputType([System.Collections.Hashtable])] param ( [Parameter()] [System.String] $Name, [Parameter()] [System.String] $PhysicalMediaType, [Parameter()] [ValidateNotNullOrEmpty()] [ValidateSet('Up','Disconnected','Disabled')] [System.String] $Status = 'Up', [Parameter()] [System.String] $MacAddress, [Parameter()] [System.String] $InterfaceDescription, [Parameter()] [System.UInt32] $InterfaceIndex, [Parameter()] [System.String] $InterfaceGuid, [Parameter()] [System.String] $DriverDescription, [Parameter()] [System.UInt32] $InterfaceNumber = 1, [Parameter()] [System.Boolean] $IgnoreMultipleMatchingAdapters = $false ) Write-Verbose -Message ( @("$($MyInvocation.MyCommand): " $($LocalizedData.FindingNetAdapterMessage) ) -join '') $adapterFilters = @() if($PSBoundParameters.ContainsKey('Name')) { $adapterFilters += @('($_.Name -eq $Name)') } # if if($PSBoundParameters.ContainsKey('PhysicalMediaType')) { $adapterFilters += @('($_.PhysicalMediaType -eq $PhysicalMediaType)') } # if if($PSBoundParameters.ContainsKey('Status')) { $adapterFilters += @('($_.Status -eq $Status)') } # if if($PSBoundParameters.ContainsKey('MacAddress')) { $adapterFilters += @('($_.MacAddress -eq $MacAddress)') } # if if($PSBoundParameters.ContainsKey('InterfaceDescription')) { $adapterFilters += @('($_.InterfaceDescription -eq $InterfaceDescription)') } # if if($PSBoundParameters.ContainsKey('InterfaceIndex')) { $adapterFilters += @('($_.InterfaceIndex -eq $InterfaceIndex)') } # if if($PSBoundParameters.ContainsKey('InterfaceGuid')) { $adapterFilters += @('($_.InterfaceGuid -eq $InterfaceGuid)') } # if if($PSBoundParameters.ContainsKey('DriverDescription')) { $adapterFilters += @('($_.DriverDescription -eq $DriverDescription)') } # if if ($adapterFilters.Count -eq 0) { Write-Verbose -Message ( @("$($MyInvocation.MyCommand): " $($LocalizedData.AllNetAdaptersFoundMessage) ) -join '') $matchingAdapters = @(Get-NetAdapter) } else { # Join all the filters together $adapterFilterScript = '(' + ($adapterFilters -join ' -and ') + ')' $matchingAdapters = @(Get-NetAdapter | Where-Object -FilterScript ([ScriptBlock]::Create($adapterFilterScript))) } # Were any adapters found matching the criteria? if ($matchingAdapters.Count -eq 0) { New-InvalidOperationException ` -Message ($LocalizedData.NetAdapterNotFoundError) # Return a null so that ErrorAction SilentlyContinue works correctly return $null } else { Write-Verbose -Message ( @("$($MyInvocation.MyCommand): " $($LocalizedData.NetAdapterFoundMessage -f $matchingAdapters.Count) ) -join '') if ($matchingAdapters.Count -gt 1) { if ($IgnoreMultipleMatchingAdapters) { # Was the number of matching adapters found matching the adapter number? if (($InterfaceNumber -gt 1) -and ($InterfaceNumber -gt $matchingAdapters.Count)) { New-InvalidOperationException ` -Message ($LocalizedData.InvalidNetAdapterNumberError ` -f $matchingAdapters.Count,$InterfaceNumber) # Return a null so that ErrorAction SilentlyContinue works correctly return $null } # if } else { New-InvalidOperationException ` -Message ($LocalizedData.MultipleMatchingNetAdapterFound ` -f $matchingAdapters.Count) # Return a null so that ErrorAction SilentlyContinue works correctly return $null } # if } # if } # if # Identify the exact adapter from the adapters that match $exactAdapter = $matchingAdapters[$InterfaceNumber - 1] $returnValue = [PSCustomObject] @{ Name = $exactAdapter.Name PhysicalMediaType = $exactAdapter.PhysicalMediaType Status = $exactAdapter.Status MacAddress = $exactAdapter.MacAddress InterfaceDescription = $exactAdapter.InterfaceDescription InterfaceIndex = $exactAdapter.InterfaceIndex InterfaceGuid = $exactAdapter.InterfaceGuid MatchingAdapterCount = $matchingAdapters.Count } return $returnValue } # Find-NetworkAdapter <# .SYNOPSIS Returns the DNS Client Server static address that are assigned to a network adapter. This is required because Get-DnsClientServerAddress always returns the currently assigned server addresses whether regardless if they were assigned as static or by DHCP. The only way that could be found to do this is to query the registry. .PARAMETER InterfaceAlias Alias of the network interface to get the static DNS Server addresses from. .PARAMETER AddressFamily IP address family. #> function Get-DnsClientServerStaticAddress { [CmdletBinding()] [OutputType([String[]])] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [String] $InterfaceAlias, [Parameter(Mandatory = $true)] [ValidateSet('IPv4', 'IPv6')] [String] $AddressFamily ) Write-Verbose -Message ( @("$($MyInvocation.MyCommand): " $($LocalizedData.GettingDNSServerStaticAddressMessage) -f $AddressFamily,$InterfaceAlias ) -join '') # Look up the interface Guid $adapter = Get-NetAdapter ` -InterfaceAlias $InterfaceAlias ` -ErrorAction SilentlyContinue if (-not $adapter) { New-InvalidOperationException ` -Message ($LocalizedData.InterfaceAliasNotFoundError ` -f $InterfaceAlias) # Return null to support ErrorAction Silently Continue return $null } # if $interfaceGuid = $adapter.InterfaceGuid.ToLower() if ($AddressFamily -eq 'IPv4') { $interfaceRegKeyPath = "HKLM:\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\$interfaceGuid\" } else { $interfaceRegKeyPath = "HKLM:\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters\Interfaces\$interfaceGuid\" } # if $nameServerAddressString = Get-ItemPropertyValue ` -Path $interfaceRegKeyPath ` -Name NameServer ` -ErrorAction SilentlyContinue # Are any statically assigned addresses for this adapter? if ([String]::IsNullOrWhiteSpace($nameServerAddressString)) { # Static DNS Server addresses not found so return empty array Write-Verbose -Message ( @("$($MyInvocation.MyCommand): " $($LocalizedData.DNSServerStaticAddressNotSetMessage) -f $AddressFamily,$InterfaceAlias ) -join '') return $null } else { # Static DNS Server addresses found so split them into an array using comma Write-Verbose -Message ( @("$($MyInvocation.MyCommand): " $($LocalizedData.DNSServerStaticAddressFoundMessage) -f $AddressFamily,$InterfaceAlias,$nameServerAddressString ) -join '') return @($nameServerAddressString -split ',') } # if } # Get-DnsClientServerStaticAddress <# .SYNOPSIS Gets the IP Address prefix from a provided IP Address in CIDR notation. .PARAMETER IPAddress IP Address to get prefix for, can be in CIDR notation. .PARAMETER AddressFamily Address family for provided IP Address, defaults to IPv4. #> function Get-IPAddressPrefix { [cmdletbinding()] param ( [parameter(Mandatory=$True, ValueFromPipeline)] [string[]]$IPAddress, [parameter()] [ValidateSet('IPv4','IPv6')] [string]$AddressFamily = 'IPv4' ) process { foreach ($singleIP in $IPAddress) { $prefixLength = ($singleIP -split '/')[1] If (-not ($prefixLength) -and $AddressFamily -eq 'IPv4') { if ($singleIP.split('.')[0] -in (0..127)) { $prefixLength = 8 } elseif ($singleIP.split('.')[0] -in (128..191)) { $prefixLength = 16 } elseif ($singleIP.split('.')[0] -in (192..223)) { $prefixLength = 24 } } elseif (-not ($prefixLength) -and $AddressFamily -eq 'IPv6') { $prefixLength = 64 } [PSCustomObject]@{ IPAddress = $singleIP.split('/')[0] prefixLength = $prefixLength } } } } Export-ModuleMember -Function ` Convert-CIDRToSubhetMask, ` Find-NetworkAdapter, Get-DnsClientServerStaticAddress, Get-IPAddressPrefix |