gistfile1.rb

# Console login script for Kasetsart University Internet login page.
# It uses Curl to load pages and post data.
# To use it, you need ruby (sure!) and curl installed.

def build_hidden_option_list(html)
  list = []
  tags = html.scan(/<input[^>]*hidden[^>]*>/)
  tags.each do |tag|
    res = tag.match(/name='([^']*)' .*value='(.*)'/)
    list << [res[1],res[2]]
  end
  return list
end

# taken from HighLine
def raw_no_echo_mode
  state = `stty -g`
  system "stty -echo"
  state
end

def restore_mode(state)
  system "stty #{state}"
end

def read_username_and_password
  print "Username: "
  username = gets.chomp
  print "Password: "
  oldstate = raw_no_echo_mode
  begin
    password = gets.chomp
  ensure
    restore_mode oldstate
  end
  puts
  [username,password]
end

puts "Reading login source.."
system 'curl -D cookies -k https://login1.ku.ac.th/ -A "Mozilla/5.0 (X11; U; Linux i686\
; en-US; rv:1.9.0.3) Gecko/2008092510 Ubuntu/8.04 (hardy) Firefox/3.0.3" > login.html 2> /dev/null'
options = build_hidden_option_list(open("login.html").read)

username, password = read_username_and_password

params = "username=#{username}&password=#{password}&zone=0"
options.each { |key,val| params += "&#{key}=#{val}" }
params += "&submit=Login"

#puts "Param: #{params}"

puts "Logging in.."
system 'curl -b cookies -d "'+params+'" -k -e "https://login1.ku.ac.th/" -i -L -A "Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.3) Gecko/2008092510 Ubuntu/8.04 (hardy) Firefox/3.0.3" "https://login1.ku.ac.th/index.php?content=login&referer=www.ku.ac.th&action=login" > login.log 2> /dev/null'
puts "Done."