dAToken.rb

# DeviantART Auth Token
# Zeros-Elipticus
# 4-12-2010

require 'net/https'
require 'uri'

# Get a token, optionally asking dA to generate a brand new one
# if reusetoken is false.
#
# Performs an http request against chat.deviantart.com to ensure the
# new token can be used with dAmn.
#
def get_token(username, password, reusetoken=true)
  uri = URI.parse('https://www.deviantart.com/users/login')
  http = Net::HTTP.new(uri.host, uri.port)
  http.use_ssl = true if uri.scheme == "https"
  http.verify_mode = OpenSSL::SSL::VERIFY_NONE
  http.start do
    data = URI.encode("username=#{username}&password=#{password}&reusetoken=#{reusetoken and 1 or 0}")
    http.request_post(uri.path,data) do |res|
      if( res.get_fields('location') and
        res.get_fields('location')[0] == 'http://www.deviantart.com/users/loggedin' and
        (token = URI.decode(res['Set-Cookie']).match('"authtoken";s:32:"([a-f0-9]{32})";')))
        
        cookie = res['Set-Cookie']

        # Make cookie usable in dAmn by doing an http request to chat.deviantart.com
        enable_token(cookie) if cookie

        return token[1]
      end
    end
  end
  
  nil
end

# Enables a token's use with dAmn.
#
def enable_token(cookie)
  uri = URI.parse('http://chat.deviantart.com/chat/devart')
  http = Net::HTTP.new(uri.host, uri.port)
  http.start do |http|
    request = Net::HTTP::Get.new(uri.path)
    request['Cookie'] = cookie
    http.request(request)
  end
end