NAME¶

Net::Facebook::Oauth2 - a simple Perl wrapper around Facebook OAuth v2.0 protocol

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;

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

SEE ALSO¶

For more information about Facebook Oauth 2.0 API Please Check <http://developers.facebook.com/docs/> get/post Facebook Graph API <http://developers.facebook.com/docs/api>

USAGE¶

"Net::Facebook::Oauth->new( %args )"¶

Pass args as hash. %args are:

•

"application_id "

Your application id as you get from facebook developers platform when you register your application

•

"application_secret"

Your application secret id as you get from facebook developers platform when you register your application

"$fb->get_authorization_url( %args )"¶

Return an Authorization URL for your application, once you receive this URL redirect user there in order to authorize your application

•

"scope"

['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

•

"callback"

callback URL, where facebook will send users after they authorize your application

•

"display"

How to display Facebook Authorization page

"$fb->get_access_token( %args )"¶

Returns access_token string One arg to pass

•

"code"

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

"$fb->get( $url,$args )"¶

Send get request to facebook and returns response back from facebook

•

"url"

Facebook Graph API URL as string

•

$args

hashref of parameters to be sent with graph API URL if required

The response returned can be formatted as the following

•

"$response>as_json"

Returns response as json object

•

"$response>as_hash"

Returns response as perl hashref

For more information about facebook grapg API, please check http://developers.facebook.com/docs/api

"$fb->post( $url,$args )"¶

Send post request to facebook API, usually to post something

•

"url"

Facebook Graph API URL as string

•

$args

hashref of parameters to be sent with graph API URL

For more information about facebook grapg API, please check http://developers.facebook.com/docs/api

INSTALLATION¶

To install this module type the following:

   perl Makefile.PL
   make
   make test
   make install

DEPENDENCIES¶

This module requires these other modules and libraries:

  Jason::Any
  LWP::UserAgent
  URI::Escape

AUTHOR¶

Mahmoud A. Mehyar, <mamod.mehyar@gmail.com>

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.