gistfile1.rb

#Have a site that is compromised somehow.
#Someone is able to upload malicious .htaccess files that
#redirect based on User Agent being Windows and a whole list
#of possible referers, including Google.com.
#
#This script periodically checks the site and then emails if it gets
#anything other than a 200
require 'net/smtp'

site = "example.com"
sender_email = "someone@example.com"
receiver_email = "someoneelse@example.com"
smtp_server = "localhost"
wait_time = 3600

loop do
  #Net::HTTP what?
  headers = `curl -s -I -A Windows -e google.com #{site}`

  if headers !~ /^HTTP\/1.1 200 OK\r\n/
    message = <<-MAIL
    From: <#{sender_email}>
    To: <#{receiver_email}>
    Subject: Website Problem

    Headers:
    #{headers}
    MAIL


    Net::SMTP.start(smtp_server) do |smtp|
      smtp.send_message message, sender_email, receiver_email
    end         
  end   

  sleep wait_time
end