function gnusocial_api_init()
{
// require libraries
$base = elgg_get_plugins_path() . 'gnusocial_api';
elgg_register_class('GNUSocialOAuth', "{$base}/vendors/gnusocialoauth/gnusocialOAuth.php");
elgg_register_library('gnusocial_api', "{$base}/lib/gnusocial_api.php");
elgg_load_library('gnusocial_api');
// extend site views
//elgg_extend_view('metatags', 'gnusocial_api/metatags');
elgg_extend_view('css/elgg', 'gnusocial_api/css');
elgg_extend_view('css/admin', 'gnusocial_api/css');
elgg_extend_view('js/elgg', 'gnusocial_api/js');
// sign on with gnusocial
if (gnusocial_api_allow_sign_on_with_gnusocial()) {
elgg_extend_view('login/extend', 'gnusocial_api/login');
}
// register page handler
elgg_register_page_handler('gnusocial_api', 'gnusocial_api_pagehandler');
// backward compatibility
elgg_register_page_handler('gnusocialservice', 'gnusocial_api_pagehandler_deprecated');
// register Walled Garden public pages
elgg_register_plugin_hook_handler('public_pages', 'walled_garden', 'gnusocial_api_public_pages');
// push wire post messages to gnusocial
if (elgg_get_plugin_setting('wire_posts', 'gnusocial_api') == 'yes') {
elgg_register_plugin_hook_handler('status', 'user', 'gnusocial_api_tweet');
}
$actions = dirname(__FILE__) . '/actions/gnusocial_api';
elgg_register_action('gnusocial_api/interstitial_settings', "{$actions}/interstitial_settings.php", 'logged_in');
}
/**
* Log in a user referred from GNUSocial's OAuth API
*
* If the user has already linked their account with GNUSocial, it is a seamless
* login. If this is a first time login (or a user from deprecated gnusocial login
* plugin), we create a new account (update the account).
*
* If a plugin wants to be notified when someone logs in with gnusocial or a new
* gnusocial user signs up, register for the standard login or create user events
* and check for 'gnusocial_api' context.
*
* The user has to be redirected from GNUSocial for this to work. It depends on
* the GNUSocial OAuth data.
*/
function gnusocial_api_login()
{
// sanity check
if (!gnusocial_api_allow_sign_on_with_gnusocial()) {
forward();
}
$session = elgg_get_session();
$token = gnusocial_api_get_access_token(get_input('oauth_verifier'));
$persistent = false;
$forward = '';
// fetch login metadata from session
$login_metadata = $session->get('gnusocial_api_login_metadata');
$session->remove('gnusocial_api_login_metadata');
if (!empty($login_metadata['persistent'])) {
$persistent = true;
}
if (!empty($login_metadata['forward'])) {
$forward = $login_metadata['forward'];
}
if (!isset($token['oauth_token']) || !isset($token['oauth_token_secret'])) {
register_error(elgg_echo('gnusocial_api:login:error'));
forward();
}
// attempt to find user and log them in.
// else, create a new user.
$options = array('type' => 'user', 'plugin_id' => 'gnusocial_api', 'plugin_user_setting_name_value_pairs' => array('access_key' => $token['oauth_token'], 'access_secret' => $token['oauth_token_secret']), 'limit' => 0);
$users = elgg_get_entities_from_plugin_user_settings($options);
if ($users) {
if (count($users) == 1 && login($users[0], $persistent)) {
system_message(elgg_echo('gnusocial_api:login:success'));
forward($forward);
} else {
register_error(elgg_echo('gnusocial_api:login:error'));
forward();
}
} else {
$api = gnusocial_api_get_api_object($token['oauth_token'], $token['oauth_token_secret']);
$gnusocial = $api->get('account/verify_credentials');
// backward compatibility for deprecated GNUSocial Login plugin
$user = FALSE;
if ($gnusocial_user = get_user_by_username($token['screen_name'])) {
if (($screen_name = $gnusocial_user->gnusocial_screen_name) && $screen_name == $token['screen_name']) {
// convert existing account
$user = $gnusocial_user;
$forward = '';
}
}
// create new user
if (!$user) {
$user = gnusocial_api_create_user($gnusocial);
$site_name = elgg_get_site_entity()->name;
system_message(elgg_echo('gnusocial_api:login:email', array($site_name)));
$forward = "gnusocial_api/interstitial";
}
// set gnusocial services tokens
elgg_set_plugin_user_setting('gnusocial_name', $token['screen_name'], $user->guid, 'gnusocial_api');
elgg_set_plugin_user_setting('access_key', $token['oauth_token'], $user->guid, 'gnusocial_api');
elgg_set_plugin_user_setting('access_secret', $token['oauth_token_secret'], $user->guid, 'gnusocial_api');
// pull in GNUSocial icon
gnusocial_api_update_user_avatar($user, $gnusocial->profile_image_url);
// login new user
if (login($user)) {
system_message(elgg_echo('gnusocial_api:login:success'));
} else {
system_message(elgg_echo('gnusocial_api:login:error'));
}
forward($forward, 'gnusocial_api');
}
// register login error
register_error(elgg_echo('gnusocial_api:login:error'));
forward();
}
