/**
* Used to get facebook user data
*
* @access public
* @return void
*/
function facebook_connect_get_fbdata()
{
elgg_load_library('facebook');
$fbData = array();
$facebook = facebookservice_api();
$helper = $facebook->getRedirectLoginHelper();
try {
$accessToken = $helper->getAccessToken();
} catch (Facebook\Exceptions\FacebookResponseException $e) {
// When Graph returns an error
echo '2. Graph returned an error: ' . $e->getMessage();
exit;
} catch (Facebook\Exceptions\FacebookSDKException $e) {
// When validation fails or other local issues
echo '2. Facebook SDK returned an error: ' . $e->getMessage();
exit;
}
if (!isset($accessToken)) {
if ($helper->getError()) {
header('HTTP/1.0 401 Unauthorized');
echo "Error: " . $helper->getError() . "\n";
echo "Error Code: " . $helper->getErrorCode() . "\n";
echo "Error Reason: " . $helper->getErrorReason() . "\n";
echo "Error Description: " . $helper->getErrorDescription() . "\n";
} else {
header('HTTP/1.0 400 Bad Request');
echo 'Bad request';
}
exit;
}
$fbData['user_profile']['accessToken'] = (string) $accessToken;
try {
// Returns a `Facebook\FacebookResponse` object
$response = $facebook->get('/me?fields=id,name,email', $accessToken);
} catch (Facebook\Exceptions\FacebookResponseException $e) {
echo '1. Graph returned an error: ' . $e->getMessage();
exit;
} catch (Facebook\Exceptions\FacebookSDKException $e) {
echo '1. Facebook SDK returned an error: ' . $e->getMessage();
exit;
}
$user = $response->getGraphUser();
$fbData['user_profile']['id'] = $user['id'];
$fbData['user_profile']['name'] = $user['name'];
$fbData['user_profile']['email'] = $user->getProperty("email");
$u = explode("@", $fbData['user_profile']['email']);
$fbData['user_profile']['username'] = $u[0];
if ($user) {
$fbData['loginUrl'] = '';
} else {
$permissions = ['public_profile', 'email'];
if (facebook_connect_allow_post_on_facebook()) {
$permissions = ['public_profile', 'email', 'publish_actions'];
}
$fbData['loginUrl'] = $helper->getLoginUrl(elgg_get_site_url() . 'facebook_connect/login/', $permissions);
}
return $fbData;
}
/**
* Used to create user with facebook data
*
* @access public
* @param array $fbData facebook data of user
* @return void
*/
function facebook_connect_create_update_user($fbData)
{
elgg_load_library('facebook');
// need facebook account credentials
// backward compatibility for stalled-development FBConnect plugin
$user = FALSE;
$facebook_users = elgg_get_entities_from_metadata(array('type' => 'user', 'metadata_name_value_pairs' => array('name' => 'facebook_uid', 'value' => $fbData['user_profile']['id'])));
if (is_array($facebook_users) && count($facebook_users) == 1) {
// convert existing account
$user = $facebook_users[0];
// remove unused metadata
remove_metadata($user->getGUID(), 'facebook_uid');
remove_metadata($user->getGUID(), 'facebook_controlled_profile');
}
// create new user
if (!$user) {
// check new registration allowed
if (!facebook_connect_allow_new_users_with_facebook()) {
register_error(elgg_echo('registerdisabled'));
forward();
}
$email = $fbData['user_profile']['email'];
$users = get_user_by_email($email);
if (!$users) {
// Elgg-ify facebook credentials
if (!empty($fbData['user_profile']['username'])) {
$username = $fbData['user_profile']['username'];
} else {
$username = str_replace(' ', '', strtolower($fbData['user_profile']['name']));
}
$usernameTmp = $username;
while (get_user_by_username($username)) {
$username = $usernameTmp . '_' . rand(1000, 9999);
}
$password = generate_random_cleartext_password();
$name = $fbData['user_profile']['name'];
$user = new ElggUser();
$user->username = $username;
$user->name = $name;
$user->email = $email;
$user->access_id = ACCESS_PUBLIC;
$user->salt = generate_random_cleartext_password();
$user->password = generate_user_password($user, $password);
$user->owner_guid = 0;
$user->container_guid = 0;
$user->last_action = date("Y-m-d");
$user->last_login = date("Y-m-d");
$user->validated = 1;
$user->validated_method = 'facebook';
$user->language = 'en';
if (!$user->save()) {
register_error(elgg_echo('registerbad'));
forward();
} else {
// send mail to user
send_user_password_mail($email, $name, $username, $password);
// post status on facebook
if (facebook_connect_allow_post_on_facebook()) {
facebook_connect_post_status($fbData);
}
// pull in facebook icon
$url = 'https://graph.facebook.com/' . $fbData['user_profile']['id'] . '/picture?type=large';
facebook_connect_update_user_avatar($user, $url);
}
} else {
$user = $users[0];
}
}
// set facebook services tokens
elgg_set_plugin_user_setting('uid', $fbData['user_profile']['id'], $user->guid);
elgg_set_plugin_user_setting('access_token', $fbData['user_profile']['accessToken'], $user->guid);
return $user;
}
/**
* Used to post synched status on facebook.
*
* @access public
* @param array $fbData facebook data of user
* @return void
*/
function facebook_connect_post_status($fbData)
{
if (facebook_connect_allow_post_on_facebook()) {
elgg_load_library('facebook');
$facebook = facebookservice_api();
$site = elgg_get_site_entity();
$uid = $fbData['user_profile']['id'];
$permissions = $facebook->api('/' . $uid . '/permissions');
if (array_key_exists('publish_stream', $permissions['data'][0])) {
$message = $user->name . ' just synched his/her facebook account with ' . $site->name;
$params = array('link' => elgg_get_site_url(), 'message' => $message, 'picture' => elgg_get_site_url() . '_graphics/elgg_logo.png', 'description' => $site->name . ' is the social network for connecting people.');
try {
$status = $facebook->api('/' . $uid . '/feed/', 'POST', $params);
} catch (FacebookApiException $e) {
}
}
}
}
<?php
elgg_load_library('facebook');
$fbData = array();
$facebook = facebookservice_api();
$helper = $facebook->getRedirectLoginHelper();
$permissions = ['public_profile', 'email'];
if (facebook_connect_allow_post_on_facebook()) {
$permissions = ['public_profile', 'email', 'publish_actions'];
}
$callback = elgg_get_site_url() . 'facebook_connect/login';
$url = $helper->getLoginUrl($callback, $permissions);
$img_url = elgg_get_site_url() . 'mod/facebook_connect/graphics/facebook_login.png';
$login = <<<__HTML
<div id="login_with_facebook">
\t<a href="{$url}" target="_self"><img src="{$img_url}" alt="Facebook" /></a>
</div>
__HTML;
echo $login;
