CGI Server in Ruby

cgi-server.rb

#!/usr/bin/env ruby

# Script depends on whatever WEBrick has in Ruby 2.2.3

# Includes for convenience
require 'webrick'
include WEBrick

# Initialize plain server, no indexing, else CGI handling will be broken
s = HTTPServer.new(
  :Port => 3000
)

# Set CGI handler for every executable file in this directory, recursively
# (Security shmurity)
Dir.glob("**/*") do |file|
  if File.executable_real?(file) and not File.directory?(file)
    puts "/#{file}" => File.expand_path(file)
    s.mount("/#{file}", HTTPServlet::CGIHandler, File.expand_path(file))
  end
end

# Set enviroment variable because we can
ENV['ENVIRONMENT'] = 'development'

# Now we can mount FileHandler later for pretty indexes
s.mount("/", HTTPServlet::FileHandler, Dir.pwd, FancyIndexing: true)

# Trap INT signal so we won't be trapped FOREVER
trap("INT") { s.shutdown }

# Drink coffee
s.start