EM-Redfinger

This library is an exeperimental EventMachine version of the simple redfinger ruby lib. The logic is exactly the same as I've just changed HTTP calls to no use rest-client, and hooked a bunch of callback here and there.

EM::Redfinger is a simple Ruby library built to consume the Webfinger protocol using EventMachine. It's simple!

For more information about Webfinger, see:

• http://hueniverse.com/2009/08/introducing-webfinger/
• http://code.google.com/p/webfinger/

Installation

EM-Redfinger is a gem:

gem install em-redfinger

Usage

Just call it with an e-mail address of a domain that provides the Webfinger protocol:

require 'em-redfinger'

EM::Redfinger.finger('youraccount@joindiaspora.com') do |finger|
  # ...
end

From there, you have access to the links provided in the response as well as some shortcuts for common uses:

Redfinger.finger('youraccount@joindiaspora.com') do |finger|
  finger.hcard.first.to_s # => "https://joindiaspora.com/hcard/users/you"
end

Links are simple hash based objects that store the 'rel' URI (such as that for hCard, OpenID, etc.), the 'href' (the actual destination URI), and the content type if specified. Note you can also just use #to_s on a link to get the destination URI.

So how can you use Webfinger to your advantage? Let's take the example of hCard. If you install the mofo library you can do this:

require 'mofo'
require 'em-redfinger'

EM::Redfinger.finger('example@joindiaspora.com') do |finger|
  hcard_uri = finger.hcard.first.to_s
  hcard = hCard.find(hcard_uri)
  hcard.fn    # => "Example Guy"
  hcard.title # => "Title guy gave himself on Google profile"
end

Note that the Webfinger protocol is still in its alpha/infancy and there will likely be many changes as time progresses. This library will do its best to stay up-to-date and current with these changes over time.

Note on Patches/Pull Requests

• Fork the project.
• Make your feature addition or bug fix.
• Add tests for it. This is important so I don't break it in a future version unintentionally.
• Commit, do not mess with rakefile, version, or history. (if you want to have your own version, that is fine but bump version in a commit by itself I can ignore when I pull)
• Send me a pull request. Bonus points for topic branches.

Copyright

Copyright (c) 2011 Intridea, Inc. and Michael Bleigh. See LICENSE for details.