Small script to parse nginx access log file, and find out from what organisation (AS) was visiting your website
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#!/usr/bin/env ruby | |
require 'teamcymru' | |
require 'ipaddr' | |
c = TeamCymru::ASNClient.new | |
ips = Array.new | |
ARGF.each do |line| | |
ip = IPAddr.new(line.split()[0]) | |
# rewrite ::ffff:v4inv6-notation to native v4 | |
ips << ip.native.to_s | |
end | |
# group and count IPs | |
grouped_ips = ips.inject(Hash.new(0)) { |h, ip| h[ip] += 1; h} | |
grouped_ips.sort_by{|k,v| v}.reverse.each do |ip, num| | |
as_info = c.lookup(ip) | |
printf "%5.d%55.50s %s\n", num, as_info.org, ip | |
end | |
puts "-"*80 | |
printf "%5.d\n", ips.length |
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