我处于一个很多电脑没有被彻底盘点的环境中。基本上,没有人知道哪个IP对应哪个MAC地址和主机名。因此,我写了以下内容:
# This script goes down the entire IP range and attempts to
# retrieve the Hostname and mac address and outputs them
# into a file. Yay!
require "socket"
TwoOctets = "10.26"
def computer_exists?(computerip)
system("ping -c 1 -W 1 #{computerip}")
end
def append_to_file(line)
file = File.open("output.txt", "a")
file.puts(line)
file.close
end
def getInfo(current_ip)
begin
if computer_exists?(current_ip)
arp_output = `arp -v #{current_ip}`
mac_addr = arp_output.to_s.match(/..:..:..:..:..:../)
host_name = Socket.gethostbyname(current_ip)
append_to_file("#{host_name[0]} - #{current_ip} - #{mac_addr}\n")
end
rescue SocketError => mySocketError
append_to_file("unknown - #{current_ip} - #{mac_addr}")
end
end
(6..8).each do |i|
case i
when 6
for j in (1..190)
current_ip = "#{TwoOctets}.#{i}.#{j}"
getInfo(current_ip)
end
when 7
for j in (1..255)
current_ip = "#{TwoOctets}.#{i}.#{j}"
getInfo(current_ip)
end
when 8
for j in (1..52)
current_ip = "#{TwoOctets}.#{i}.#{j}"
getInfo(current_ip)
end
end
end
除了它找不到反向DNS之外,一切都正常。
我得到的示例输出如下:
10.26.6.12 - 10.26.6.12 - 00:11:11:9B:13:9F
10.26.6.17 - 10.26.6.17 - 08:00:69:9A:97:C3
10.26.6.18 - 10.26.6.18 - 08:00:69:93:2C:E2
如果我执行nslookup 10.26.6.12
,则会获得正确的反向DNS,这表明我的计算机正在访问DNS服务器。
我尝试了Socket.gethostbyname
、gethostbyaddr
,但都无法工作。
非常感谢您能提供任何指导。
true
:Socket.getaddrinfo(interesting_ip, 0, Socket::AF_UNSPEC, Socket::SOCK_STREAM, nil, Socket::AI_CANONNAME, true)
。 - akostadinov