gistfile1.rb

require "nokogiri"
require "uri"
require "net/http"

UA = "Mozilla/5.0 (X11; Linux x86_64; rv:18.0) Gecko/18.0 Firefox/18.0 FirePHP/0.7.1"
@cookie = {}

def request(address, method = :get, data = {})
  uri = URI.parse(address)
  http = Net::HTTP.new(uri.host, uri.port)
  http.use_ssl = uri.port == 443
  http.verify_mode = OpenSSL::SSL::VERIFY_NONE
  http.start do |connect|
    header = {
      "User-Agent" => UA,
      "Cookie" => @cookie.map{|k, v| "#{k}=#{v}"}.join(";")
    }
    body = data.map{|k, v| "#{k}=#{v}"}.join("&")
    if method == :post
      response = connect.post(uri.path, body, header)
    elsif method == :post_multipart
      boundary = "re4kboundary"
      header["Content-Type"] = "multipart/form-data; boundary=#{boundary}"
      body_multipart = ""
      data.each do |k, v|
        body_multipart += "--#{boundary}\r\n"
        body_multipart += "Content-Disposition: form-data; name=#{k}\r\n"
        body_multipart += "\r\n"
        body_multipart += v
        body_multipart += "\r\n"
      end
      body_multipart += "--#{boundary}--\r\n"
      response = connect.post(uri.path, body_multipart, header)
    else
      response = connect.get(uri.path + "?" + body, header)
    end
    if response.key?("Set-Cookie")
      response.get_fields("Set-Cookie").each do |str|
        k, v = str[0...str.index(";")].split("=")
        @cookie[k] = v
      end
    end
    return response
  end
end

def prepare_login
  doc = Nokogiri.HTML(request("https://dev.twitter.com/user/login").body)
  return {
    "form_build_id" => doc.xpath('//form[@id="user-login"]/input[@name="form_build_id"]').attribute("value").value,
    "form_token" => doc.xpath('//form[@id="user-login"]/input[@name="form_token"]').attribute("value").value,
    "form_id" => "user_login",
    "op" => "Log in"
  }
end

def login(login, password)
  data = prepare_login()
  data["name"] = login
  data["pass"] = password
  request("https://dev.twitter.com/user/login", :post, data).get_fields("Location")
end

def prepare_update(id)
  doc = Nokogiri.HTML(request("https://dev.twitter.com/apps/#{id}/settings").body)
  return {
    "name" => doc.xpath('//*[@id="edit-name"]').attribute("value").value,
    "description" => doc.xpath('//*[@id="edit-description"]').attribute("value").value,
    "url" => doc.xpath('//*[@id="edit-url"]').attribute("value").value,
    "files[image]" => "",
    "access_level" => doc.xpath('//input[@name="access_level" and @checked="checked"]').attribute("value").value,
    "callback_url" => doc.xpath('//*[@id="edit-callback-url"]').attribute("value").value,
    "organization" => doc.xpath('//*[@id="edit-organization"]').attribute("value").value,
    "organization_url" => doc.xpath('//*[@id="edit-organization-url"]').attribute("value").value,
    "op" => "Update this Twitter application's settings",
    "form_build_id" => doc.xpath('//form[@id="twitter-apps-form-settings"]/input[@name="form_build_id"]').attribute("value").value,
    "form_token" => doc.xpath('//form[@id="twitter-apps-form-settings"]/input[@name="form_token"]').attribute("value").value,
    "form_id" => "twitter_apps_form_settings"
  }
end

def update(id, newname)
  data = prepare_update(id)
  data["name"] = newname
  request("https://dev.twitter.com/apps/#{id}/settings", :post_multipart, data).get_fields("Location")
end

login("screen_name", "password")
update("app_id", "new_name")