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| function Invoke-ARPScan {
param (
[Parameter(Mandatory=$true,
ParameterSetName = "Range",
ValueFromPipelineByPropertyName=$true,
Position=0)]
[string]$Range,
[Parameter(Mandatory=$true,
ParameterSetName = "CIDR",
ValueFromPipelineByPropertyName=$true,
Position=0)]
[string]$CIDR,
[Parameter(Mandatory=$false,
ValueFromPipelineByPropertyName=$true,
Position=0)]
[string]$MaxThreads=50
)
Begin
{
function New-IPv4Range
{
param(
[Parameter(Mandatory=$true,
ValueFromPipelineByPropertyName=$true,
Position=0)]
$StartIP,
[Parameter(Mandatory=$true,
ValueFromPipelineByPropertyName=$true,
Position=2)]
$EndIP
)
$ip1 = ([System.Net.IPAddress]$StartIP).GetAddressBytes()
[Array]::Reverse($ip1)
$ip1 = ([System.Net.IPAddress]($ip1 -join '.')).Address
$ip2 = ([System.Net.IPAddress]$EndIP).GetAddressBytes()
[Array]::Reverse($ip2)
$ip2 = ([System.Net.IPAddress]($ip2 -join '.')).Address
for ($x=$ip1; $x -le $ip2; $x++) {
$ip = ([System.Net.IPAddress]$x).GetAddressBytes()
[Array]::Reverse($ip)
$ip -join '.'
}
}
function New-IPv4RangeFromCIDR
{
param(
[Parameter(Mandatory=$true,
ValueFromPipelineByPropertyName=$true,
Position=0)]
$Network
)
$StrNetworkAddress = ($Network.split("/"))[0]
[int]$NetworkLength = ($Network.split("/"))[1]
$NetworkIP = ([System.Net.IPAddress]$StrNetworkAddress).GetAddressBytes()
$IPLength = 32-$NetworkLength
[Array]::Reverse($NetworkIP)
$NumberOfIPs = ([System.Math]::Pow(2, $IPLength)) -1
$NetworkIP = ([System.Net.IPAddress]($NetworkIP -join ".")).Address
$StartIP = $NetworkIP +1
$EndIP = $NetworkIP + $NumberOfIPs
If ($EndIP -isnot [double])
{
$EndIP = $EndIP -as [double]
}
If ($StartIP -isnot [double])
{
$StartIP = $StartIP -as [double]
}
$StartIP = ([System.Net.IPAddress]$StartIP).IPAddressToString
$EndIP = ([System.Net.IPAddress]$EndIP).IPAddressToString
New-IPv4Range $StartIP $EndIP
}
$sign = @"
using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.Net.NetworkInformation;
using System.Runtime.InteropServices;
public static class NetUtils
{
[System.Runtime.InteropServices.DllImport("iphlpapi.dll", ExactSpelling = true)]
static extern int SendARP(int DestIP, int SrcIP, byte[] pMacAddr, ref int PhyAddrLen);
public static string GetMacAddress(String addr)
{
try
{
IPAddress IPaddr = IPAddress.Parse(addr);
byte[] mac = new byte[6];
int L = 6;
SendARP(BitConverter.ToInt32(IPaddr.GetAddressBytes(), 0), 0, mac, ref L);
String macAddr = BitConverter.ToString(mac, 0, L);
return (macAddr.Replace('-',':'));
}
catch (Exception ex)
{
return (ex.Message);
}
}
}
"@
try
{
Write-Verbose "Instanciating NetUtils"
$IPHlp = Add-Type -TypeDefinition $sign -Language CSharp -PassThru
}
catch
{
Write-Verbose "NetUtils already instanciated"
}
if ($Range)
{
$rangeips = $Range.Split("-")
$targets = New-IPv4Range -StartIP $rangeips[0] -EndIP $rangeips[1]
}
if ($CIDR)
{
$targets = New-IPv4RangeFromCIDR -Network $CIDR
}
}
Process
{
$scancode = {
param($IPAddress,$IPHlp)
$result = $IPHlp::GetMacAddress($IPAddress)
if ($result) {New-Object psobject -Property @{Address = $IPAddress; MAC = $result}}
}
$jobs = @()
$start = get-date
write-verbose "Begin Scanning at $start"
$pool = [runspacefactory]::CreateRunspacePool(1, $MaxThreads)
$pool.Open()
$jobs = @()
$ps = @()
$wait = @()
$i = 0
$record_count = $targets.Length
foreach ($IPAddress in $targets)
{
$record_progress = [int][Math]::Ceiling((($i / $record_count) * 100))
while ($($pool.GetAvailableRunspaces()) -le 0)
{
Start-Sleep -milliseconds 500
}
$ps += [powershell]::create()
$ps[$i].runspacepool = $pool
[void]$ps[$i].AddScript($scancode).AddParameter('IPaddress', $IPAddress).AddParameter('IPHlp', $IPHlp)
$jobs += $ps[$i].BeginInvoke();
$wait += $jobs[$i].AsyncWaitHandle
$i++
}
write-verbose "Waiting for scanning threads to finish..."
$waitTimeout = get-date
while ($($jobs | ? {$_.IsCompleted -eq $false}).count -gt 0 -or $($($(get-date) - $waitTimeout).totalSeconds) -gt 60)
{
Start-Sleep -milliseconds 500
}
for ($y = 0; $y -lt $i; $y++) {
try
{
$ScanResults += $ps[$y].EndInvoke($jobs[$y])
}
catch
{
write-warning "error: $_"
}
finally
{
$ps[$y].Dispose()
}
}
$pool.Dispose()
}
end
{
$ScanResults
}
}
|