nofollow/script at master · robhammond/nofollow · GitHub

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#!/usr/bin/env perl
use Mojolicious::Lite;

get '/' => sub {
	my $self = shift;
	$self->render('index');
};

get '/url=*redirect' => sub {
  my $self = shift;
  my $url = $self->stash('redirect');

  if ($url) {
    unless ($url =~ m{^https?://}i) {
      $url = 'http://' . $url;
    }
    $self->res->headers->add('X-Robots-Tag' => 'nofollow');
    return $self->redirect_to($url);
  } else {
    $self->redirect_to('/');
  }
};

get '/robots.txt' => sub {
  my $self = shift;
  $self->render( text => { template => 'robots'});
};

app->start;
__DATA__

@@ robots.txt
User-agent: *
Disallow: /url

@@ index.html.ep
% layout 'default';
% title 'Nofollow.me: a rel=nofollow alternative';
<h1>nofollow.me</h1>
<h5>a rel=nofollow alternative for the rest of us</h5>
<p class="lead">Quick, easy &amp; transparent URL redirection, blocking search engines along the way.</p>
<p>Sometimes you don't want links to be followed. Sometimes your 20 year old <acronym title="Content Management System">CMS</acronym> doesn't allow you to apply
<a href="http://nofollow.me/url=https://support.google.com/webmasters/answer/96569?hl=en">rel="nofollow"</a> attributes easily (or at all).</p>
<p>Google suggests either using a rel=nofollow attribute or redirecting links through an <a href="http://nofollow.me/url=https://support.google.com/webmasters/answer/66356?hl=en&rd=1">intermediate page</a> that's blocked using robots.txt.
 Nofollow.me blocks search engines from following links by using both robots.txt and the
<a href="http://nofollow.me/url=https://developers.google.com/webmasters/control-crawl-index/docs/robots_meta_tag">X-Robots-Tag</a> HTTP header, protecting your site from evil <a href="http://nofollow.me/url=http://en.wikipedia.org/wiki/Google_Penguin">Penguins</a>!</p>
<p>Simply construct your URL below:</p>
<div class="input-prepend">
  <span class="add-on">http://nofollow.me/url=</span>
  <input type="url" placeholder="http://untrusted-url-here.com/" id="url" onkeyup="update('url');" class="span8">
</div>
<div id="build" class="well"></div>
<p>Then as per <a href="http://nofollow.me/url=https://support.google.com/webmasters/answer/35769?hl=en">Google's Webmaster Guidelines</a> you won't get <a href="http://nofollow.me/url=http://searchenginewatch.com/article/2252255/Interflora-Google-Penalty-Advertorials-SEO-Content-Marketing">banned</a> from Google for flowing <a href="http://nofollow.me/url=http://en.wikipedia.org/wiki/PageRank">PageRank</a> to the <a href="http://nofollow.me/url=http://www.google.co.uk/intl/en_uk/insidesearch/howsearchworks/fighting-spam.html">wrong sites</a>!</p>
<footer>&copy; 2013 <a href="http://robhammond.co/">rob hammond</a> - <a href="https://github.com/robhammond/nofollow">fork me on github</a></footer>
<script>
function update(element){
    var typed = document.getElementById(element).value;
    document.getElementById("build").innerHTML = "<a rel='nofollow' href='http://nofollow.me/url=" + typed + "'>http://nofollow.me/url=" + typed + "</a>";
}
</script>
<style>
#build a {
	font-size:20px;
	color:green;
}
footer {
  font-size: 12px;
  bottom: 15px;
  position:absolute;
}
</style>


@@ layouts/default.html.ep
  <!DOCTYPE html>
  <html>
    <head>
    	<title><%= title %></title>
    	<link href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css" rel="stylesheet">
    	<script src="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/js/bootstrap.min.js"></script>
    </head>
    <body>
    <div class="container"><%= content %></div></body>
  </html>