Toby Inkster > WWW-Finger-0.104 > WWW::Finger::Webfinger

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Module Version: 0.104   Source   Latest Release: WWW-Finger-0.105

NAME ^

WWW::Finger::Webfinger - WWW::Finger module for Webfinger

DESCRIPTION ^

Webfinger is currently a very unstable specification, with implementation details changing all the time. Given this instability, it seems prudent to describe the protocol, as implemented by this package.

Given an e-mail-like identifier, the package will prepend "acct:" to it, assuming that the identifier doesn't already have a URI scheme. This identifier will now be called [ident].

The package looks up the host-meta file associated with the host for [ident]. It is assumed to be formatted according to the draft-hammer-hostmeta-05 Internet Draft http://tools.ietf.org/html/draft-hammer-hostmeta-05 and XRD Working Draft 10 <http://www.oasis-open.org/committees/download.php/35274/xrd-1.0-wd10.html>. Both these drafts are dated 19 November 2009.

A link template will be extracted from the host-meta for the host using either of the following two relationships: http://lrdd.net/rel/descriptor, http://www.iana.org/assignments/relation/lrdd. (Neither is prioritised, so if both exist and have different templates, hilarity will ensue.)

The token "{uri}" in the link template will be replaced with the URL-encoded version of [ident] to create an account descriptor URI.

The account descriptor URI is fetched via HTTP GET with an Accept header asking for RDF/XML, Turtle, RDF/JSON or XRD. The result is parsed for account description data if it has status code 200 (OK).

The following relationships/properties are understood in the account description:

As well as the standard WWW::Finger methods, WWW::Finger::Webfinger provides this additional method:

get($p1, $p2, ...)

$p1, $p2 and are RDF predicate URIs, XRD Link@rel values, or XRD Property@type values

  # Returns phone numbers...
  $finger->get('http://xmlns.com/foaf/0.1/phone',
               'http://rdf.data-vocabulary.org/#tel');
  
  # Salmon-style magic keys
  $finger->get('magic-public-key');

SEE ALSO ^

WWW::Finger, XRD::Parser, HTTP::LRDD.

http://code.google.com/p/webfinger/.

AUTHOR ^

Toby Inkster, <tobyink@cpan.org>

COPYRIGHT AND LICENCE ^

Copyright (C) 2009-2012 by Toby Inkster

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

DISCLAIMER OF WARRANTIES ^

THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

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