var $directory;

var $urltoroot;

var $provider;

function load_module($directory, $urltoroot, $type, $provider) {

$this->directory = $directory;

$this->urltoroot = $urltoroot;

$this->provider = $provider;

}

function check_login() {

$action = null;

$key = null;

if( !empty($_GET['hauth_start']) ) {

$key = trim(strip_tags($_GET['hauth_start']));

$action = 'process';

} else if( !empty($_GET['hauth_done']) ) {

$key = trim(strip_tags($_GET['hauth_done']));

$action = 'process';

} else if( !empty($_GET['login']) ) {

$key = trim(strip_tags($_GET['login']));

$action = 'login';

} else if(isset($_GET['fb_source']) && $_GET['fb_source'] == 'appcenter' &&

isset($_SERVER['HTTP_REFERER']) && stristr($_SERVER['HTTP_REFERER'], 'www.facebook.com') !== false &&

isset($_GET['fb_appcenter']) && $_GET['fb_appcenter'] == '1' && isset($_GET['code']) ) {

// allow AppCenter users to login directly

$key = 'facebook';

$action = 'login';

}

if($key == null || strcasecmp($key, $this->provider) != 0) {

return false;

}

if($action == 'login') {

// handle the login

// after login come back to the same page

$loginCallback = qa_path('', array(), qa_opt('site_url'));

require_once $this->directory . 'Hybrid/Auth.php';

require_once $this->directory . 'qa-open-utils.php';

// prepare the configuration of HybridAuth

$config = $this->getConfig($loginCallback);

$topath = qa_get('to');

if(!isset($topath)) {

$topath = ''; // redirect to front page

}

try {

// try to login

$hybridauth = new Hybrid_Auth( $config );

$adapter = $hybridauth->authenticate( $this->provider );

// if ok, create/refresh the user account

$user = $adapter->getUserProfile();

$duplicates = 0;

if (!empty($user))

$duplicates = qa_log_in_external_user($key, $user->identifier, array(

'email' => @$user->email,

'handle' => @$user->displayName,

'confirmed' => !empty($user->emailVerified),

'name' => @$user->displayName,

'location' => @$user->region,

'website' => @$user->webSiteURL,

'about' => @$user->description,

'avatar' => strlen(@$user->photoURL) ? qa_retrieve_url($user->photoURL) : null,

));

if($duplicates > 0) {

qa_redirect('logins', array('confirm' => '1', 'to' => $topath));

} else {

qa_redirect_raw(qa_opt('site_url') . $topath);

}

} catch(Exception $e) {

// not really interested in the error message - for now

// however, in case we have errors 6 or 7, then we have to call logout to clean everything up

if($e->getCode() == 6 || $e->getCode() == 7) {

$adapter->logout();

}

$qry = 'provider=' . $this->provider . '&code=' . $e->getCode();

if(strstr($topath, '?') === false) {

$topath .= '?' . $qry;

} else {

$topath .= '&' . $qry;

}

// redirect

qa_redirect_raw(qa_opt('site_url') . $topath);

}

}

if($action == 'process') {

require_once( "Hybrid/Auth.php" );

require_once( "Hybrid/Endpoint.php" );

Hybrid_Endpoint::process();

}

return false;

}

function do_logout() {

// after login come back to the same page

$loginCallback = qa_path('', array(), qa_opt('site_url'));

require_once( "Hybrid/Auth.php" );

// prepare the configuration of HybridAuth

$config = $this->getConfig($loginCallback);

try {

// try to logout

$hybridauth = new Hybrid_Auth( $config );

if($hybridauth->isConnectedWith( $this->provider )) {

$adapter = $hybridauth->getAdapter( $this->provider );

$adapter->logout();

}

} catch(Exception $e) {

// not really interested in the error message - for now

// however, in case we have errors 6 or 7, then we have to call logout to clean everything up

if($e->getCode() == 6 || $e->getCode() == 7) {

$adapter->logout();

}

}

}

function match_source($source) {

// the session source will be in the format 'provider-xyx'

$pos = strpos($source, '-');

if($pos === false) {

$pos = strlen($source);

}

// identify the provider out of the session source

$provider = substr($source, 0, $pos);

// verify if the identified provider matches the current one

return stripos($this->provider, $provider) !== false;

}

function login_html($tourl, $context) {

self::printCode($this->provider, $tourl, $context, 'login');

}

function logout_html($tourl) {

self::printCode($this->provider, $tourl, 'menu', 'logout');

}

static function printCode($provider, $tourl, $context, $action = 'login', $print = true) {

$css = $key = strtolower($provider);

if ($key == 'live') {

$css = 'windows'; // translate provider name to zocial css class

} else if ($key == 'googleplus') {

$provider = 'Google+';

}

$showInHeader = qa_opt("{$key}_app_shortcut") ? true : false;

if($action == 'login' && !$showInHeader && $context == 'menu') {

// do not show login button in the header for this

return;

}

$zocial = qa_opt('open_login_zocial') == '1' ? 'zocial' : ''; // use zocial buttons

if($action == 'logout') {

$url = $tourl;

$classes = "$context action-logout $zocial $css";

$title = qa_lang_html('main/nav_logout');

$text = qa_lang_html('main/nav_logout');

} else if($action == 'login') {

$topath = qa_get('to'); // lets user switch between login and register without losing destination page

// clean GET parameters (not performed when to parameter is already passed)

$get = $_GET;

unset($get['provider']);

unset($get['code']);

$tourl = isset($topath) ? $topath : qa_path(qa_request(), $get, ''); // build our own tourl

$params = array(

'login' => $key,

);

$url = qa_path('login', $params, qa_path_to_root());

if(strlen($tourl) > 0) {

$url .= '&to=' . $tourl; // play nice with validators

}

$classes = "$context action-login $zocial $css";

$title = qa_lang_html_sub('plugin_open/login_using', $provider);

$text = $provider . ' ' . qa_lang_html('main/nav_login');

if($context != 'menu') {

$text = $title;

}

} else if($action == 'link') {

$url = qa_path('logins', array('link' => $key), qa_path_to_root()); // build our own url

$classes = "$context action-link $zocial $css";

$title = qa_lang_html_sub('plugin_open/login_using', $provider);

$text = qa_lang_html('main/nav_login');

if($context != 'menu') {

$text = $title;

}

} else if($action == 'view') {

$url = 'javascript://';

$classes = "$context action-link $zocial $css";

$title = $provider;

$text = $tourl;

}

$html = <<<HTML

<a class="open-login-button context-$classes" title="$title" href="$url" rel="nofollow">$text</a>

HTML;

if($print) {

echo $html;

} else {

return $html;

}

}

function getConfig($url) {

$key = strtolower($this->provider);

return array(

'base_url' => $url,

'providers' => array (

$this->provider => array (

'enabled' => true,

'keys' => array(

'id' => qa_opt("{$key}_app_id"),

'key' => qa_opt("{$key}_app_id"),

'secret' => qa_opt("{$key}_app_secret")

),

'scope' => $this->provider == 'Facebook' ? 'email,user_about_me,user_location,user_website' : null,

)

),

'debug_mode' => false,

'debug_file' => ''

);

}