Ruby實現端口掃描
#!/usr/bin/ruby -w
=begin
quite simple connect scanner in ruby
Shows open (reliable), close and filtered. But the reliablity
of the last two states depends of course on firewalling and the timeout
interval you can set down. Uncomment or comment states you want or don't
want to get printed on the screen.
*supports scanning mutiple hosts/IPs (like www.heise.de,www.gulli.com)
*supports multiple ports(like 12,45,53,165),ranges(like 20..85) or one single
port(like 80)
*support a ports file like http://insecure.org/nmap/data/nmap-services (just
clean it with | grep /tcp ..)
ZGlnaXRhbGJ5dGU=
=end
require 'socket'
require 'timeout'
class Scanner
def initialize
@hosts,@ports = Array($*)
end
def portarrange
case @ports
when /^.+[..]/
@ports = @ports.split("..")
@ports = @ports[0].to_i..@ports[1].to_i
when /^.+[,]/
@ports = @ports.split(",")
else
@ports = Array(@ports)
end
end
def hostarrange
case @hosts
when /^.+[,]/
@hosts = @hosts.split(",")
else
@hosts = Array(@hosts)
end
end
def output(state,port)
printed = false
portsfile = File.new("ports", "r")
scanpat = "^.+ #{port}/tcp"
begin
portsfile.each_line do |line|
if line =~ Regexp.new(scanpat)
puts "#{state} : #{line}"
printed = true
end
end
puts "#{state} : #{port}" if printed == false
ensure
portsfile.close
end
end
def scanning(hosts,ports)
hosts.each do |host|
begin
puts "scanning #{host}:"
ports.each do |port|
begin
Timeout::timeout(10){TCPSocket.new(host, port)}
rescue Timeout::Error
output("filtered",port)
rescue
# output("closed",port)
else
output("open",port)
end
end
end
end
end
end
##################### code start #####################
puts "no arguments past,correct usage:\nruby #{$0} [hosts] [ports]\n" if
!ARGV[1]
my_scanner = Scanner.new
hosts = my_scanner.hostarrange
ports = my_scanner.portarrange
my_scanner.scanning(hosts,ports)
##################### eof #####################
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