File: servlets.rb

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require 'webrick'
require 'logger'
require 'date'
require 'zlib'
require 'stringio'

class RefererServlet < WEBrick::HTTPServlet::AbstractServlet
  def do_GET(req, res)
    res['Content-Type'] = "text/html"
    res.body = req['Referer']
  end

  def do_POST(req, res)
    res['Content-Type'] = "text/html"
    res.body = req['Referer']
  end
end

class GzipServlet < WEBrick::HTTPServlet::AbstractServlet
  def do_GET(req, res)
    if req['Accept-Encoding'] =~ /gzip/
      File.open("htdocs/#{req.query['file']}", 'r') do |file|
        string = ""
        zipped = StringIO.new string, 'w'
        gz = Zlib::GzipWriter.new(zipped)
        gz.write file.read
        gz.close
        res['Content-Encoding'] = 'gzip'
        res['Content-Type'] = "text/html"
        res.body = string
      end
    else
      raise 'no gzip'
    end
  end
end

class BadContentTypeTest < WEBrick::HTTPServlet::AbstractServlet
  def do_GET(req, res)
    res['Content-Type'] = "text/xml"
    res.body = "Hello World"
  end
end

class ContentTypeTest < WEBrick::HTTPServlet::AbstractServlet
  def do_GET(req, res)
    ct = req.query['ct'] || "text/html; charset=utf-8"
    res['Content-Type'] = ct
    res.body = "Hello World"
  end
end

class FileUploadTest < WEBrick::HTTPServlet::AbstractServlet
  def do_POST(req, res)
    res.body = req.body
  end
end

class ResponseCodeTest < WEBrick::HTTPServlet::AbstractServlet
  def do_GET(req, res)
    res['Content-Type'] = "text/html"
    if req.query['code']
      code = req.query['code'].to_i
      case code
      when 301
        res['Location'] = "/index.html"
      when 302
        res['Location'] = "/index.html"
      end
      res.status = code
    else
    end
  end
end
class FormTest < WEBrick::HTTPServlet::AbstractServlet
  def do_GET(req, res)
    res.body = "<HTML><body>"
    req.query.each_key { |k|
      req.query[k].each_data { |data|
        res.body << "<a href=\"#\">#{URI.unescape(k)}:#{URI.unescape(data)}</a><br />"
      }
    }
    res.body << "</body></HTML>"
    res['Content-Type'] = "text/html"
  end

  def do_POST(req, res)
    res.body = "<HTML><body>"
    req.query.each_key { |k|
      req.query[k].each_data { |data|
        res.body << "<a href=\"#\">#{k}:#{data}</a><br />"
      }
    }
    res.body << "</body></HTML>"
    res['Content-Type'] = "text/html"
  end
end

class OneCookieTest < WEBrick::HTTPServlet::AbstractServlet
  def do_GET(req, res)
    cookie = WEBrick::Cookie.new("foo", "bar")
    cookie.path = "/"
    cookie.expires = Time.now + 86400
    res.cookies << cookie
    res['Content-Type'] = "text/html"
    res.body = "<html><body>hello</body></html>"
  end
end

class OneCookieNoSpacesTest < WEBrick::HTTPServlet::AbstractServlet
  def do_GET(req, res)
    cookie = WEBrick::Cookie.new("foo", "bar")
    cookie.path = "/"
    cookie.expires = Time.now + 86400
    res.cookies << cookie.to_s.gsub(/; /, ';')
    res['Content-Type'] = "text/html"
    res.body = "<html><body>hello</body></html>"
  end
end

class ManyCookiesTest < WEBrick::HTTPServlet::AbstractServlet
  def do_GET(req, res)
    name_cookie = WEBrick::Cookie.new("name", "Aaron")
    name_cookie.path = "/"
    name_cookie.expires = Time.now + 86400
    res.cookies << name_cookie
    res.cookies << name_cookie
    res.cookies << name_cookie
    res.cookies << name_cookie

    expired_cookie = WEBrick::Cookie.new("expired", "doh")
    expired_cookie.path = "/"
    expired_cookie.expires = Time.now - 86400
    res.cookies << expired_cookie

    different_path_cookie = WEBrick::Cookie.new("a_path", "some_path")
    different_path_cookie.path = "/some_path"
    different_path_cookie.expires = Time.now + 86400
    res.cookies << different_path_cookie

    no_path_cookie = WEBrick::Cookie.new("no_path", "no_path")
    no_path_cookie.expires = Time.now + 86400
    res.cookies << no_path_cookie

    no_exp_path_cookie = WEBrick::Cookie.new("no_expires", "nope")
    no_exp_path_cookie.path = "/"
    res.cookies << no_exp_path_cookie

    res['Content-Type'] = "text/html"
    res.body = "<html><body>hello</body></html>"
  end
end

class ManyCookiesAsStringTest < WEBrick::HTTPServlet::AbstractServlet
  def do_GET(req, res)
    cookies = []
    name_cookie = WEBrick::Cookie.new("name", "Aaron")
    name_cookie.path = "/"
    name_cookie.expires = Time.now + 86400
    name_cookie.domain = 'localhost'
    cookies << name_cookie
    cookies << name_cookie
    cookies << name_cookie
    cookies << "#{name_cookie}; HttpOnly"

    expired_cookie = WEBrick::Cookie.new("expired", "doh")
    expired_cookie.path = "/"
    expired_cookie.expires = Time.now - 86400
    cookies << expired_cookie

    different_path_cookie = WEBrick::Cookie.new("a_path", "some_path")
    different_path_cookie.path = "/some_path"
    different_path_cookie.expires = Time.now + 86400
    cookies << different_path_cookie

    no_path_cookie = WEBrick::Cookie.new("no_path", "no_path")
    no_path_cookie.expires = Time.now + 86400
    cookies << no_path_cookie

    no_exp_path_cookie = WEBrick::Cookie.new("no_expires", "nope")
    no_exp_path_cookie.path = "/"
    cookies << no_exp_path_cookie

    res['Set-Cookie'] = cookies.join(', ')

    res['Content-Type'] = "text/html"
    res.body = "<html><body>hello</body></html>"
  end
end

class SendCookiesTest < WEBrick::HTTPServlet::AbstractServlet
  def do_GET(req, res)
    res['Content-Type'] = "text/html"
    res.body = "<html><body>"
    req.cookies.each { |c| 
      res.body << "<a href=\"#\">#{c.name}:#{c.value}</a>"
    }
    res.body << "</body></html>"
  end
end