DZone Snippets: cookies code

Persistent Rails cookie session

remvee (Remco van 't Veer) — Mon, 25 Feb 2008 12:23:27 GMT

Session cookies, the Rails-2 kind, are transient because that's safer. In some applications safety isn't important. The following makes the session cookies persist for a year.



class ApplicationController < ActionController::Base

  before_filter :update_session_expiration_date



private

  def update_session_expiration_date

    unless ActionController::Base.session_options[:session_expires]

      ActionController::Base.session_options[:session_expires] = 1.year.from_now

    end

  end

end

Getting Started With WWW::Mechanize

jrobertson (James Robertson) — Tue, 12 Feb 2008 17:53:54 GMT

This Ruby code uses WWW:mechanize to act like a web browser.



 require 'rubygems'

 require 'mechanize'



 agent = WWW::Mechanize.new

 page = agent.get('http://google.com/')

Refer to the documentation at http://mechanize.rubyforge.org/mechanize/. Then gem install mechanize, and try running the code in an irb session.

output (extract):



=> # {url #}

 {meta}

 {title "Google"}

 {iframes}

 {frames}

 {links

  #   "Images"

   "http://images.google.com/imghp?hl=en&tab=wi">

  #   "Maps"

   "http://maps.google.com/maps?hl=en&tab=wl">

  #   "News"

   "http://news.google.com/nwshp?hl=en&tab=wn">

  #   "Shopping"

   "http://www.google.com/prdhp?hl=en&tab=wf">

  #   "Gmail"

   "http://mail.google.com/mail/?hl=en&tab=wm">

Integrating reinvigorate name tags into a PHP site

robbiet480 (Robbie Trencheny) — Mon, 25 Jun 2007 17:07:43 GMT

This is a script which will intergrate reinvigorate name tags into your PHP site using cookies
Put this on any page you want to have visitors enter their name

Name
Put this on your index.php page at the top before anything. This will set a cookie that will last for 2 months
$Name = $_GET['n']; ?> $inTwoMonths = 60 * 60 * 24 * 60 + time(); setcookie('name', $Name, $inTwoMonths); ?>
Put this at the first line after the tag. You need to change the USER-ID to your user ID that
you can get from the regular reinvigorate code.

Javascript cookies

justas (Justas) — Sun, 17 Jun 2007 17:31:14 GMT

Learn how to use an object with methods to save, read and erase cookies. Using these methods you can manipulate cookies on your site.
Demo can be found on this script homepage - free code and tutorials website.



/**

*

*  Javascript cookies

*  http://www.webtoolkit.info/

*

**/



function CookieHandler() {



	this.setCookie = function (name, value, seconds) {



		if (typeof(seconds) != 'undefined') {

			var date = new Date();

			date.setTime(date.getTime() + (seconds*1000));

			var expires = "; expires=" + date.toGMTString();

		}

		else {

			var expires = "";

		}



		document.cookie = name+"="+value+expires+"; path=/";

	}



	this.getCookie = function (name) {



		name = name + "=";

		var carray = document.cookie.split(';');



		for(var i=0;i < carray.length;i++) {

			var c = carray[i];

			while (c.charAt(0)==' ') c = c.substring(1,c.length);

			if (c.indexOf(name) == 0) return c.substring(name.length,c.length);

		}



		return null;

	}



	this.deleteCookie = function (name) {

		this.setCookie(name, "", -1);

	}



}

using wget to download content protected by referer and cookies

ameaba (Andrei Kuzmin) — Mon, 30 Apr 2007 20:27:28 GMT

1. get base url and save its cookies in file
2. get protected content using stored cookies



 $ wget --cookies=on --keep-session-cookies --save-cookies=cookie.txt http://first_page

 $ wget --referer=http://first_page --cookies=on --load-cookies=cookie.txt --keep-session-cookies --save-cookies=cookie.txt http://second_page

Custom HTTP/HTTPS GET/POST queries in Ruby

paulgoscicki (Paul Goscicki) — Thu, 06 Oct 2005 03:50:12 GMT

First, the scripts sends the GET query to read the website cookies (for session, etc.), and then it sends a POST query with the received cookies and custom POST parameters.



require 'net/http'

require 'net/https'



http = Net::HTTP.new('profil.wp.pl', 443)

http.use_ssl = true

path = '/login.html'



# GET request -> so the host can set his cookies

resp, data = http.get(path, nil)

cookie = resp.response['set-cookie']





# POST request -> logging in

data = 'serwis=wp.pl&url=profil.html&tryLogin=1&countTest=1&logowaniessl=1&login_username=blah&login_password=blah'

headers = {

  'Cookie' => cookie,

  'Referer' => 'http://profil.wp.pl/login.html',

  'Content-Type' => 'application/x-www-form-urlencoded'

}



resp, data = http.post(path, data, headers)





# Output on the screen -> we should get either a 302 redirect (after a successful login) or an error page

puts 'Code = ' + resp.code

puts 'Message = ' + resp.message

resp.each {|key, val| puts key + ' = ' + val}

puts data