NAME
    Yahoo::BBAuth - Perl interface to the Yahoo! Browser-Based
    Authentication.

SYNOPSIS
      my $bbauth = Yahoo::BBAuth->new(
          appid  => $appid,
          secret => $secret,
      );
      # Create an authentication link
      printf '<a href="%s">Click here to authorize</a>', $bbauth->auth_url; 
      # After the user authenticates successfully, Yahoo returns the user to the page you
      # dictated when you signed up. To verify whether authentication succeeded, you need to
      # validate the signature:
      if ($bbauth->validate_sig()) {
          print 'Authentication Successful';
      } else {
          print 'Authentication Failed. Error is: '.$bbauth->sig_validation_error;
      }
      my $url = 'http://photos.yahooapis.com/V1.0/listAlbums';
      my $xml = $bbauth->auth_ws_get_call($url);
      unless ($xml) {
          print 'WS call setup Failed. Error is: '. $bbauth->access_credentials_error;
      } else {
          print 'Look at response for other errors or success: '.$xml;
      }

DESCRIPTION
    This module priovides you an Object Oriented interface for Yahoo!
    Browser-Based Authentication.

    This module is ported from official PHP class
    library(http://developer.yahoo.com/auth/quickstart/bbauth_quickstart.zip
    ).

METHODS
  new(appid => $appid, secret => $secret)
    Returns an instance of this module. You must set the your application id
    and shared secret.

  auth_url(%param)
    Create the Login URL used to fetch authentication credentials. This is
    the first step in the browser authentication process.

    You can set the %param to send_userhash and appdata if you
    need(optinal).

    The appdata typically a session id that Yahoo will transfer to the
    target application upon successful authentication.

    If send_userhash set, the send_userhash=1 request will be appended to
    the request URL so that the userhash will be returned by Yahoo! after
    successful authentication.

  validate_sig
    Validates the signature returned by Yahoo's browser authentication
    services.

    Returns true if the sig is validated. Returns undef if any error occurs.
    If undef is returned, $self->sig_validation_error should contain a
    string describing the error.

  auth_ws_get_call($url)
    Make an authenticated web services call using HTTP GET. Returns responce
    if successful, a string is returned containing the web service response
    which might be XML, JSON, or some other type of text. If an error
    occurs, the error is stored in $self->access_credentials_error.

  auth_ws_post_call($url)
    Make an authenticated web services call using HTTP POST.

  sig_validation_error
    Returns error message when validate_sig failed.

  access_credentials_error
    Returns error message when auth_ws_get_call or auth_ws_post_call failed.

ACCESSORS
    appid
    secret
    userhash
    appdata
    timeout
    token
    WSSID
    cookie

AUTHOR
    Jiro Nishiguchi <jiro@cpan.org>

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

SEE ALSO
    * http://developer.yahoo.com/auth/