=head1 NAME
Net::Facebook::Oauth2 - a simple Perl wrapper around Facebook OAuth v2.0 protocol
=head1 SYNOPSIS
use CGI;
my $cgi = CGI->new;
use Net::Facebook::Oauth2;
my $fb = Net::Facebook::Oauth2->new(
application_id => 'your_application_id',
application_secret => 'your_application_secret',
callback => 'http://yourdomain.com/facebook/callback'
);
###get authorization URL for your application
my $url = $fb->get_authorization_url(
scope => ['offline_access','publish_stream'],
display => 'page'
);
####now redirect to this url
print $cgi->redirect($url);
##once user authorizes your application facebook will send him/her back to your application
##to the callback link provided above
###in your callback block capture verifier code and get access_token
my $fb = Net::Facebook::Oauth2->new(
application_id => 'your_application_id',
application_secret => 'your_application_secret',
callback => 'http://yourdomain.com/facebook/callback'
);
my $access_token = $fb->get_access_token(code => $cgi->param('code'));
###save this token in database or session
##later on your application you can use this verifier code to comunicate
##with facebook on behalf of this user
my $fb = Net::Facebook::Oauth2->new(
access_token => $access_token
);
my $info = $fb->get(
'https://graph.facebook.com/me' ##Facebook API URL
);
print $info->as_json;
=head1 DESCRIPTION
Net::Facebook::Oauth2 gives you a way to simply access FaceBook Oauth 2.0 protocol
For more information please see example folder shipped with this Module
=head1 SEE ALSO
For more information about Facebook Oauth 2.0 API
Please Check
L
get/post Facebook Graph API
L
=head1 USAGE
=head2 Cnew( %args )>
Pass args as hash. C<%args> are:
=over 4
=item * C
Your application id as you get from facebook developers platform
when you register your application
=item * C
Your application secret id as you get from facebook developers platform
when you register your application
=back
=head2 C<$fb-Eget_authorization_url( %args )>
Return an Authorization URL for your application, once you receive this
URL redirect user there in order to authorize your application
=over 4
=item * C
['offline_access','publish_stream',...]
Array of Extended permissions as described by facebook Oauth2.0 API
you can get more information about scope/Extended Permission from
http://developers.facebook.com/docs/authentication/permissions
=item * C
callback URL, where facebook will send users after they authorize
your application
=item * C
How to display Facebook Authorization page
=over 4
=item * C
This will display facebook authorization page as full page
=item * C
This option is useful if you want to popup authorization page
as this option tell facebook to reduce the size of the authorization page
=item * C
From the name, for wab and mobile applications this option is the best
facebook authorization page will fit there :)
=back
=back
=head2 C<$fb-Eget_access_token( %args )>
Returns access_token string
One arg to pass
=over 4
=item * C
This is the verifier code that facebook send back to your
callback URL once user authorize your app, you need to capture
this code and pass to this method in order to get access_token
Verifier code will be presented with your callback URL as code
parameter as the following
http://your-call-back-url.com?code=234er7y6fdgjdssgfsd...
When access token is returned you need to save it in a secure
place in order to use it later in your application
=back
=head2 C<$fb-Eget( $url,$args )>
Send get request to facebook and returns response back from facebook
=over 4
=item * C
Facebook Graph API URL as string
=item * C<$args>
hashref of parameters to be sent with graph API URL if required
=back
The response returned can be formatted as the following
=over 4
=item * C<$responseEas_json>
Returns response as json object
=item * C<$responseEas_hash>
Returns response as perl hashref
=back
For more information about facebook grapg API, please check
http://developers.facebook.com/docs/api
=head2 C<$fb-Epost( $url,$args )>
Send post request to facebook API, usually to post something
=over 4
=item * C
Facebook Graph API URL as string
=item * C<$args>
hashref of parameters to be sent with graph API URL
=back
For more information about facebook grapg API, please check
http://developers.facebook.com/docs/api
=head1 INSTALLATION
To install this module type the following:
perl Makefile.PL
make
make test
make install
=head1 DEPENDENCIES
This module requires these other modules and libraries:
Jason::Any
LWP::UserAgent
URI::Escape
=head1 AUTHOR
Mahmoud A. Mehyar, Emamod.mehyar@gmail.comE
=head1 COPYRIGHT AND LICENSE
Copyright (C) 2012 by Mahmoud A. Mehyar
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself, either Perl version 5.10.1 or,
at your option, any later version of Perl 5 you may have available.
=cut