Module: IPScan

Defined in:
lib/ipscan.rb,
lib/ipscan/cli.rb,
lib/ipscan/version.rb

Defined Under Namespace

Classes: CLI

Constant Summary collapse

VERSION = 
"0.0.4"

Class Method Summary collapse

Class Method Details

.arp(ip) ⇒ Object 



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# File 'lib/ipscan.rb', line 10

def self.arp(ip)
  data = {}
  arp_line = `arp #{ip}`.split("\n").last
  arp_hash = arp_line.split(" ")
  case RbConfig::CONFIG['host_os']
  when /linux/i
    data = {name: arp_hash[0],  mac: arp_hash[2]}
  when /bsd|osx|mach|darwin/i
    data = {name: arp_hash[0],  mac: arp_hash[3]}
  else
    raise "host_os=#{RbConfig::CONFIG['host_os']} are not supported"
  end

  if data[:name]== "?"
    data[:name] = "<unknown>"
  end

  if arp_line.index("no entry")
    data[:mac]  = "<no entry>     "
  end
  data
end

.get_netbios_info(range) ⇒ Object 



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# File 'lib/ipscan.rb', line 41

def self.get_netbios_info(range)
  nbtinfo = {}
  body_started = false
  result = `nbtscan #{range}`
  result.each_line do |line|
    if line.index("-----------")
      body_started = true
      next
    end
    next unless body_started
    h            = line.split(" ")
    ip           = h[0]
    netbios_name = h[1]
    nbtinfo[ip] = {netbios_name: netbios_name}
  end
  nbtinfo
end

.get_range_addresses(network_addr, start_host, last_host) ⇒ Object 



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# File 'lib/ipscan.rb', line 33

def self.get_range_addresses(network_addr, start_host, last_host)
  addrs = []
  start_host.upto(last_host) do |i|
    addrs << "#{network_addr}.#{i}"
  end
  addrs
end

.scan(range) ⇒ Object 



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# File 'lib/ipscan.rb', line 59

def self.scan(range)
  unless range.index("-")
    range = range + "-254"
  end
  scan_result  = range.scan(/(.*)-(.*)/)[0]
  network_addr = scan_result[0].split(".")[0..2].join(".")
  start_host   = scan_result[0].split(".")[3].to_i
  last_host    = scan_result[1].to_i
  host_total   = (start_host..last_host).size
  puts "check #{network_addr}.#{start_host} ~ #{network_addr}.#{last_host}"

  netbios_info = {}
  if `which nbtscan` != ""
    netbios_info = get_netbios_info(range)
  end

  addrs = get_range_addresses(network_addr, start_host, last_host)

  results = []
  progressbar = ProgressBar.create(:total => host_total)
  Parallel.each(addrs, in_threads: 100) do |addr|
    data = {:ip => addr}
    data.merge!(arp(addr))
    pinger = Net::Ping::External.new(addr)
    if pinger.ping?
      if netbios_info[addr]
        data[:netbios_name] = netbios_info[addr][:netbios_name]
      else
        data[:netbios_name] = "<unknown>"
      end
      results << data
    end
    progressbar.increment
  end

  puts "IP Address \tMac Address     \tName         \tNetBIOS Name"
  results.each do |res|
    puts "#{res[:ip]} \t#{res[:mac]} \t#{res[:name]} \t#{res[:netbios_name]}"
  end
end