parse_http for nc http

bash

# writes host to a host file
nc -l -p 9998 -c "./parse_http>/tmp/cgi;. /tmp/cgi>/dev/null && echo $HTTP_HOST > host"

# pipemill the request body
nc -l -p 9998 -c "./parse_http>/tmp/cgi;. /tmp/cgi | while read line; do something; done"

# route on the path
# uhh, well, sure, just use if on $HTTP_PATHINFO

parse_http

#!/usr/bin/ruby
first_line = true
headers = true
ARGF.each_line do |line|
  if first_line
    method, uri, version = line.split(' ')
    path, query_string = uri.split('?', 2)
    puts "REQUEST_METHOD=#{method}"
    puts "PATH_INFO=#{path}"
    puts "QUERY_STRING=?#{query_string}"
    first_line = false
  else
    if headers
      if line.length > 2
        name, value = line.split(':', 2) << ''
        puts "HTTP_#{name.gsub('-', '_').upcase}=\"#{value.strip}\""
      else
        headers = false
      end
    else
      puts "echo #{line}"
    end
  end
end